Consulta: subjectFacets:"Estuaries"
Registros recuperados: 113
Data/hora: 11/06/2024 14:59:36

Collapse of a historic oyster fishery: diagnosing causes and identifying paths toward increased resilience
Provedor de dados: 7
Autores: Camp, Edward V.; Fisheries and Aquatic Sciences Program, School of Forest Resources and Conservation, University of Florida; edvcamp@ufl.edu; Pine III, William E.; Department of Wildlife Ecology and Conservation, University of Florida; billpine@ufl.edu; Havens, Karl; Florida Sea Grant College Program and School of Forest Resources and Conservation, University of Florida; khavens@ufl.edu; Kane, Andrew S.; Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida; Aquatic Pathobiology Laboratories, Emerging Pathogens Institute, University of Florida; Center for Human and Environmental Toxicology, University of Florida; kane@ufl.edu; Walters, Carl J.; Fisheries Centre, University of British Columbia; c.walters@fisheries.ubc.ca; Irani, Tracy; Family, Youth and Community Sciences Department, University of Florida; Institute of Food and Agricultural Sciences, University of Florida; irani@ufl.edu; Lindsey, Angela B; Institute of Food and Agricultural Sciences, University of Florida; Family, Youth and Community Sciences Department and Center of Public Issues Education, University of Florida; ablindsey@ufl.edu; Morris, Jr., J. Glenn; Emerging Pathogens Institute, University of Florida; College of Medicine, University of Florida; JGMorris@epi.ufl.edu.
Diagnosing causal factors of change at the ecosystem level is challenging because multiple drivers often interact at various spatial and temporal scales. We employ an integrated natural and social science approach to assess potential mechanisms leading to the collapse of an estuarine social-ecological system, and recommend future paths to increased system resilience. Our case study is the collapse of the eastern oyster (Crassostrea virginica) fishery in Apalachicola Bay, Florida, USA, and the associated impacts on local resource dependent communities. The oyster fishery collapse is the most recent in a series of environmental stressors to this region, which have included hurricanes and tropical storms, drought, and the Deepwater Horizon oil spill. We found...
Tipo: Peer-Reviewed Insight
Palavras-chave: Climate change; Community resilience; Drought; Estuaries; Oyster fishery.
Ano: 2015

The Fate of Coho Salmon Nomads: The Story of an Estuarine-Rearing Strategy Promoting Resilience
Provedor de dados: 7
Autores: Koski, K V.; The Nature Conservancy Alaska Field Office, Juneau, Alaska, USA; kkoski@tnc.org.
The downstream movement of coho salmon nomads (age 0), conventionally considered surplus fry, has been an accepted characteristic of juvenile coho salmon for the past 40 to 50 yr. The fate of these nomads, however, was not known and they were assumed to perish in the ocean. Several studies and observations have recently provided new insights into the fate of nomads and the role of the stream-estuary ecotone and estuary in developing this life history strategy that promotes coho resilience. Chinook and sockeye salmon have developed the ocean-type life-history strategy to exploit the higher productivity of the estuarine environment and migrate to the ocean at age 0. Nomad coho can acclimate to brackish water, and survive and grow well in the stream-estuary...
Tipo: Peer-Reviewed Insight
Palavras-chave: Age 0; Alaska; Coho salmon; Estuaries; Fry; Life history strategy; Nomads; Resilience; Restoration; Smolts; Stream-estuary ecotone.
Ano: 2009

Sex differences on the feeding of the gobiid fish Bathygobius soporator in tide pools of Maiandeua Island, Pará, Brazil
Provedor de dados: 76
Autores: Soares,Bruno E.; Lobato,Cleonice M. C.; Freitas,Danielly T. H.; Oliveira-Raiol,Roberta D.; Montag,Luciano F. A.
Abstract Bathygobius soporator (Valenciennes, 1837) is one of the most common fishes in tide pools in the estuary of Pará state, and has an omnivorous feeding habit. This study examined the diet of the species in Maiandeua Island, and aimed to: (i) describe the diet of B. soporator through indexes based on the occurrence and weight of consumed items; and (ii) evaluate if there is variation in diet composition between males and females. Frequency of Occurrence, frequency of weight and Alimentary Index were calculated for each item, and differences in the diet composition of males and females were observed through multivariate analyses (ANOSIM, NMDS and SIMPER). Bathygobius soporator presented carnivorous feeding habit, eating mainly crustaceans, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estuaries; Diet; Trophic guild.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100208

Abundance and species composition of planktonic Ciliophora from the wastewater discharge zone in the Bahía Blanca Estuary, Argentina
Provedor de dados: 76
Autores: Barría de Cao,María Sonia; Pettigrosso,Rosa; Parodi,Elisa; Freije,Rubén.
The specific composition and abundance variation of the ciliate community from a wastewater discharge zone in the Bahía Blanca estuary, Argentina, were studied all throughout a year, from June 1995 to May 1996. The polluted area exhibited high values of particulate organic matter and nutrients, particularly phosphates. Aloricate ciliates were represented by 15 species belonging to the genera Strombidium Claparède &amp;amp; Lachmann, 1859; Strombidinopsis Kent, 1881; Cyrtostrombidium Lynn &amp;amp; Gilron, 1993; Strobilidium Schewiakoff, 1983; Lohmmanniella Leegaard, 1915 and Tontonia Fauré-Fremiet, 1914. Tintinnids were represented by nine species belonging to the genera Tintinnidium Kent, 1881, Tintinnopsis Stein, 1867 and Codonellopsis Jörgensen, 1924....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tintinnina; Ciliophora; Wastewater; Estuaries.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212003000300001

Hatching and larval export of the intertidal crab Neohelice granulata in Mar Chiquita coastal lagoon, Argentina
Provedor de dados: 76
Autores: Sánchez Vuichard,Guillermina; Farías,Nahuel; Luppi,Tomás.
Synchronization in the events of the reproductive cycle in female Neohelice granulata Dana, 1851 were studied from samples taken weekly and biweekly from September to December 2006 in the Laguna Mar Chiquita. The timing and larval hatching and synchronicity were inferred from numbers of ovigerous females and observing the stages of embryonic development. Synchronization in larval hatching also was observed in females in experiments in dark for a period of 48 hours, at three different salinities (10, 23 and 33 ppm). In addition plankton sampling were performed in order to study larval exportation at the field and its link to the tidal and light/dark cycles. We found that ovigerous females of N. granulata have a marked synchronization in embryonic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hatching synchronicity; Endogenous rhythm; Larval exportation strategy; Estuaries; Southwestern Atlantic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200007

Eléments de synthèse tirés du séminaire : propositions de stratégies pour mieux concilier aménagement et maintien d'un fonctionnement naturel des estuaires
Provedor de dados: 5
Autores: Auger, Christian.
The national work seminary on the natural and artificial evolution of French estuaries was organised on the 26th and 27th of November 1997 by the GIP Hydrosystems and the Ministry of Land Settlement and Environment. Its aim was to summarize the needs of the different actors and users of the French estuaries in terms of protection of the areas of biological interest, and to develop a guideline for the strategies to adopt in order to better manage the estuaries, taking into account the environmental needs as well as those for an economic development.
Tipo: Text
Palavras-chave: Sustainable management; Administration; Action plans; Environment; Improvement; Protection; Areas of ecological interest; Estuaries; Gestion durable; Administration; Plans d'action; Environnement; Aménagements; Protection; Zones d'intérêt écologique; Estuaires.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/acte-3293.pdf

Long-term changes on estuarine ciliates linked with modifications on wind patterns and water turbidity
Provedor de dados: 5
Autores: López-abbate, M. Celeste; Molinero, Juan-carlos; Perillo, Gerardo M.e.; Barría De Cao, M. Sonia; Pettigrosso, Rosa E.; Guinder, Valeria A.; Uibrig, Roman; Berasategui, Anabela A.; Vitale, Alejandro; Marcovecchio, Jorge E.; Hoffmeyer, Mónica S.
Planktonic ciliates constitute a fundamental component among microzooplankton and play a prominent role in carbon transport at the base of marine food webs. How these organisms respond to shifting environmental regimes is unclear and constitutes a current challenge under global ocean changes. Here we examine a multiannual field survey covering 25 years in the Bahía Blanca Estuary (Argentina), a shallow, flood-plain system dominated by wind and tidal energy. We found that the estuary experienced marked changes in wind dominant regimes and an increase in water turbidity driven from the joint effect of persistent long-fetch winds and the indirect effect of the Southern Annular Mode. Along with these changes, we found that zooplankton components, i.e. ciliates...
Tipo: Text
Palavras-chave: Tintinnids; Oligotrichs; Acartia tonsa; Wind; Turbidity; Estuaries.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00471/58252/60760.pdf

Eutrophication disrupts summer trophic links in an estuarine microbial food web
Provedor de dados: 5
Autores: López-abbate, M.c.; Molinero, Juan-carlos; Barría De Cao, M.s.; Silva, R.; Negri, R.; Guinder, V.a.; Hozbor, M.c.; Hoffmeyer, M.s.
Eutrophication is the most widespread effect of urban development in coastal areas. To elucidate how nutrient loading affects the carbon pathways at the base of food chains, we quantified the carbon transfer among microbial components, from prokaryotes to microzooplankton. For this purpose, we performed two size-fractionation feeding experiments during late summer under moderate (N: 28.5 μM, P: 0.92 μM, Si: 45.8 μM) and severe (N: 173.9 μM, P: 3.5 μM, Si: 67.2 μM) cultural eutrophication in the Bahía Blanca Estuary (Argentina). In both experiments, prokaryotes were largely dominated by heterotrophic forms, small diatoms dominated among autotrophs, and heterotrophic nanoflagellates were the most abundant among protistan grazers. Under severe eutrophication,...
Tipo: Text
Palavras-chave: Eutrophication; Microbial food web; Bacteria; Nanoflagellates; Microzooplankton; Estuaries.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00512/62335/66718.pdf

Milieu vivant: Synthese des discussions
Provedor de dados: 5
Autores: Retiere, C.
After a general note the author reports the effects of pollutants in organisms, in particular, sublethal effects and bioaccumulation.
Tipo: Text
Palavras-chave: Estuarine organisms; Sublethal effects; Environmental impact; Estuaries; Bioaccumulation; Pollution effects; Brackishwater pollution.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1311.pdf

Caracteristiques saisonnieres de l'hydrobiologie du complexe estuariende Marennes-Oleron (France).
Provedor de dados: 5
Autores: Heral, Maurice; Razet, Daniel; Deslous-paoli, Jean-marc; Berthome, Jean-paul; Garnier, J.
Four seasonal compaigns providing a sampling of 15 stations each followed during half a tide cycle, i.e. 120 water samples permit the definition of the main hydrobiological features of Marennes-Oleron Bay: salinity and turbidity, phytoplanktonic biomasses, ATP concentrations. The authors suggest that a new way of adapted sampling to their objectives, will work out in the future by sampling during tidal cycles but as frequently as possible.
Tipo: Text
Palavras-chave: Seasonal variations; Salinity; ATP; Estuaries; Turbidity; Hydrobiology; Salinity; Phytoplankton; Estuaries; Biomass; Hydrobiology; Physicochemical properties; Phytoplankton; Environmental conditions; Biomass.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-1854.pdf

Multiscale patterns in the diversity and organization of benthic intertidal fauna among French Atlantic estuaries
Provedor de dados: 5
Autores: Blanchet, Hugues; Gouillieux, Benoit; Alizier, Sandrine; Amouroux, Jean-michel; Bachelet, Guy; Barille, Anne-laure; Dauvin, Jean-claude; De Montaudouin, Xavier; Derolez, Valerie; Desroy, Nicolas; Grall, Jacques; Gremare, Antoine; Hacquebart, Pascal; Jourde, Jerome; Labrune, Celine; Lavesque, Nicolas; Meirland, Alain; Nebout, Thiebaut; Olivier, Frederic; Pelaprat, Corine; Ruellet, Thierry; Sauriau, Pierre-guy; Thorin, Sebastien.
Based on a parallel sampling conducted during autumn 2008, a comparative study of the intertidal benthic macrofauna among 10 estuarine systems located along the Channel and Atlantic coasts of France was performed in order to assess the level of fauna similarity among these sites and to identify possible environmental factors involved in the observed pattern at both large (among sites) and smaller (benthic assemblages) scales. More precisely this study focused on unraveling the observed pattern of intertidal benthic fauna composition and diversity observed at among-sites scale by exploring both biotic and abiotic factors acting at the among- and within-site scales. Results showed limited level of similarity at the among-site level in terms of intertidal...
Tipo: Text
Palavras-chave: Estuaries; Macrozoobenthos; Diversity; Structuring Factors; WFD.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00179/29016/27444.pdf

The impact of groundwater discharges on mercury partitioning, speciation and bioavailability to mussels in a coastal zone (Reprinted from Marine Chemistry, vol 104, pg 143-155, 2007)
Provedor de dados: 5
Autores: Laurier, Fabien; Cossa, Daniel; Beucher, Charlotte; Breviere, Emily.
The Mussel Watch program conducted along the French coasts for the last 20 years indicates that the highest mercury concentrations in the soft tissue of the blue mussel (Mytilus edulis) occur in animals from the eastern part of Seine Bay on the south coast of the English Channel, the "Pays de Caux". This region is characterized by the presence of intertidal and submarine groundwater discharges, and no particular mercury effluent has been reported in its vicinity. Two groundwater emergence systems in the karstic coastal zone of the Pays de Caux (Etretat and Yport with slow and fast water percolation pathways respectively) were seasonally sampled to study mercury distribution, partitioning and speciation in water. Samples were also collected in the...
Tipo: Text
Palavras-chave: Mussel; Estuaries; Groundwater seepage; Bioavailability; Speciation; Mercury.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-4704.pdf

Mise en evidence des profils d'évolution pluariannuelle associés aux series de mesures de parametres hydrobiologiques effectuées dans l'estuaire de la Seine dans le cadre du reseau national d'observation de la qualité du milieu marin
Provedor de dados: 5
Autores: Gallet, P.
The author deals with hydrobiological data obtained monthly by the French marine pollution network. The mathematical analysis gives a representation of ammonium, phosphates, silicate, nitrogen and dissolved oxygen evolution from 1976 to 1983.
Tipo: Text
Palavras-chave: Mathematical models; Estuaries; Long term changes; Pollution monitoring; Water quality; Time series analysis; Physicochemical properties; Water properties.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1296.pdf

Simultaneous use of strontium:calcium and barium:calcium ratios in otoliths as markers of habitat: Application to the European eel (Anguilla anguilla) in the Adour basin, South West France
Provedor de dados: 5
Autores: Tabouret, Helene; Bareille, G.; Claverie, F.; Pecheyran, C.; Prouzet, Patrick; Donard, O. F. X.
Sr:Ca and Ba:Ca ratios in water from the Adour estuary show a clear relationship with the salinity of the surrounding water for salinities &lt;20, while ratios are almost constant above this level of salinity. A Positive relationship was observed for the Sr:Ca ratio, whereas it was inverse for the Ba Ca ratio. These two elemental ratios were measured in the otoliths of the European eels (Anguilla anguilla L) using femtosecond laser ablation linked to an ICP-MS (fs-LA ICP-MS) There was a direct relationship between the elemental ratios recorded in eel otoliths and those found in water from fresh and marine areas, suggesting that Sr Ca and Ba:Ca ratios in eel otoliths can be used as markers of habitat in this estuary Continuous profiling allowed the...
Tipo: Text
Palavras-chave: Otoliths; Anguilla anguilla; Estuaries; Water chemistry; Strontium; Barium; Laser ablation; Inductively coupled plasma mass spectrometer.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00009/11990/9042.pdf

Dynamique des suspensions et des depots: Synthese des discussions
Provedor de dados: 5
Autores: Larsonneur, C.
During the debate, the observations have dealt with balance-sheets, swell influence, sediment movements, and sedimentation flow deducted from suspensions studies. General remarks have been formulated, and a distinction of main fluvial mouths in the French littoral have been suggested.
Tipo: Text
Palavras-chave: Drowned valleys; Deltas; Estuaries; Coastal zone; Particle motion; Suspended particulate matter; Sediment dynamics.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1287.pdf

Contamination du milieu marin par les micropolluants (résultats du RNO de 1979 à 1994). 1 : Les estuaires de la Côte Basque
Provedor de dados: 5
Autores: Cantin, Christian.
After a quick presentation of the observation national network of the marine environment quality (RNO), the different metallic and organic Micropollutants measured in the three Basque coast estuaries (Adour, Nivelle, Bidassoa) are described (origin,eventual toxicity). The results of the contamination measurements in the living tissue (oysters) are presented on graphies, based on a sample every three months from 1979 to 1994, and means are compared to those obtained dming the same period on the others points of the Manche Atlantique coast.
Tipo: Text
Palavras-chave: Micropolluants; Estuaires; Côte Basque; Huîtres; Micropollutants; Estuaries; Basque Coast; Oyters.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00422/53308/54146.pdf

Environmental risk assessment: A critical approach of the European TGD in an in situ application
Provedor de dados: 5
Autores: Guerit, Isabelle; Bocquene, Gilles; James, Alice; Thybaud, E; Minier, C.
The aim of this study was to test field relevance of the prospective methodology for the assessment of environmental risk described in the EU technical guidance document (TGD) [European Commission 2003. Technical guidance document in support of Commission Directive 93/67/EEC on Risk assessment for new notified substances and Commission Regulation (EC) No 1488/94 on Risk assessment for existing substances and Commission Directive (EC) 98/8 on biocides, second ed. European Commission, Luxembourg, Part 1, 2 and 3, 760pp.]. To achieve this goal, an environmental risk assessment was performed according to the TGD for two major contaminants, atrazine and diuron, that are present in the Seine River estuary (France) and listed in the EU Water Framework Directive...
Tipo: Text
Palavras-chave: Diuron; Atrazine; Estuaries; The Seine River; Technical guidance document; Chemical risk assessment.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4540.pdf

Role des bacteries phototrophes anoxygeniques dans une partie stratifiee d'une lagune tropicale (Lagune Ebrie, Cote d'Ivoire)
Provedor de dados: 5
Autores: Caumette, P.
In the deepest parts of the estuarine region of Ebrie Lagoon (Abidjan Africa, (5 degree N, 4 degree W) stratified conditions have been observed during the rainy season (May to Nov.), owing to salinity differences between oxic and anoxic layers. At the interface, 3-4 m depth, phototrophic bacteria (Chromatium, Chlorobium and Pelodictyon ) developed, forming a brown layer due to their different pigments. Their production has been estimated at 41% of the total photosynthetic production during high stratification (Sep. 1981) and their biomass was used by the copepod population for 40 to 60% of its diet. During the dry season, the water column became homogeneous and oxygen was detected to 6m depth. The brown layer of phototrophic bacteria disappeared, as well...
Tipo: Text
Palavras-chave: Chlorobium; Chromatium; Primary production; Photosynthesis; Estuaries; Seasonal variations; Plankton; Stratification; Vertical distribution; Bacteria; Coastal lagoons; Trophic relationships; Biomass.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-957.pdf

The impact of groundwater discharges on mercury partitioning, speciation and bioavailability to mussels in a coastal zone
Provedor de dados: 5
Autores: Laurier, Fabien; Cossa, Daniel; Beucher, Charlotte; Breviere, Emily.
The Mussel Watch program conducted along the French coasts for the last 20 years indicates that the highest mercury concentrations in the soft tissue of the blue mussel (Mytilus edulis) occur in animals from the eastern part of Seine Bay on the south coast of the English Channel, the "Pays de Caux". This region is characterized by the presence of intertidal and submarine groundwater discharges, and no particular mercury effluent has been reported in its vicinity. Two groundwater emergence systems in the karstic coastal zone of the Pays de Caux (Etretat and Yport with slow and fast water percolation pathways respectively) were seasonally sampled to study mercury distribution, partitioning and speciation in water. Samples were also collected in the...
Tipo: Text
Palavras-chave: Mussel; Estuaries; Groundwater seepage; Bioavailability; Speciation; Mercury.
Ano: 2007
URL: https://archimer.ifremer.fr/doc/2007/publication-3113.pdf

Biologie et pêche traditionnelle des crevettes pénéides dans l'embouchure d'un fleuve en milieur semi-aride (sud-ouest de Madagascar)
Provedor de dados: 5
Autores: Laroche, Jean; Benoely,; Siaviri, A.
Traditional fishing using beach seines was studied over a period of one year at the mouth of the Onilahy river. The catches/efforts were recorded on a daily basis, biological sampling and the measurement of hydrological parameters being carried out twice a month. The moderate variations of salinity and temperature (14 &lt; salinity &lt; 35; 25 degrees C &lt; temperature &lt; 30 degrees C) which were observed in the estuary can be explained by the semiarid climate of the area. Four species of penaeid shrimps are to be found on the Onilahy: Metapenaeus monoceros, Panaeus indicus, Penaeus monodon and Penaeus japonicus, which were mainly caught at the subadult/adult stage with a Carapace length between 10 and 50 mm. The presence of these important sizes at the...
Tipo: Text
Palavras-chave: Pêche; Estuaire; Dynamique population; Croissance; Taille corporelle; Cycle évolutif; Zone semi aride; Madagascar; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Metapenaeus monoceros; Rivière Onilahy; Afrique; Milieu saumâtre; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata; Fishing; Estuaries; Population dynamics; Growth; Body size; Life history; Semi arid zone; Malagasy Republic; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Africa; Brackish water environment; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00097/20828/42822.pdf

La Baie de Seine: Utilisation, environnement. Synthese des discussions
Provedor de dados: 5
Autores: Mauvais, J.
This report synthesizes the communications about the processes set in motion or accelerated by man's actions in the Seine Bay. They are grouped in three categories: fishing and pollution and estuarine equipment; colored waters and pollution; and estuarine equipment.
Tipo: Text
Palavras-chave: Red tides; Port installations; Estuarine fisheries; Environmental impact; Brackishwater pollution; Coastal zone management; Estuaries.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1322.pdf

Pouvoir complexant des eaux de l'estuaire de la Seine
Provedor de dados: 5
Autores: Fischer, J; Wartel, M; Guegueniat, P; Gandon, R.
Copper has been studied, by the authors, owing to its ability to complex with various organic ligands of natural waters. Metals extraction and liberation can be explained, in part, by this complexing capacity.
Tipo: Text
Palavras-chave: Estuaries; Suspended particulate matter; Dissolved organic matter; Copper; River discharge; Ion association; Metals; Biogeochemical cycle; Water properties.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1298.pdf

Etat de l'environnement sur la facade atlantique
Provedor de dados: 5
Autores: Mauvais, Jean-louis; Goarnisson, Roger.
This document was drawn up by a working group and based upon forecasting considerations concerning the Atlantic seaboard. Within can be found a summary of different issues affecting the coastline : inputs, estuaries, green tides, spreading species, wetlands, state of biological resources, sand and gravel as well as hydrocarbon extraction, development consequences, coastline evolution, littoral landscapes, large-size debris. This report summarizes coastline monitoring as well : the marine national monitoring network, microbiological surveillance of beaches and zones of shellfish production, plytoplankton monitoring, shellfish growth.  Lastly, this document discusses proposed actions for the improvement of water quality by the Water Agencies of...
Tipo: Text
Palavras-chave: Bacterial pollutions; Chemical pollutions; Marine aggregates; Biological marine resources; Spreading species; Green tides; Estuaries; Monitoring; Development; Coastline environment; Pollutions bactérienne; Pollutions chimique; Granulats marins; Ressources vivantes marines; Espèces proliférantes; Marées vertes; Estuaires; Surveillance; Aménagement; Environnement littoral.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-1097.pdf

Distinguishing natural evolution and human impact on estuarine morpho-sedimentary development: A case study from the Vilaine Estuary, France
Provedor de dados: 5
Autores: Traini, C.; Proust, J. -n.; Menier, D.; Mathew, M. J.
Estuaries are coastal areas controlled by hydrodynamic factors such as sea-level changes, waves and tidal currents, and river discharge. This study focuses on the Vilaine Estuary which is strongly impacted by human activity after construction of Arzal dam in 1970. The purpose of this research is to differentiate the role of natural from anthropogenic factors on sediment dynamics within the Vilaine Estuary. We are proposing a hypothetical model based on the hydrodynamic modification and morpho-sedimentary development by analyzing the natural estuarine evolution and the impact of human alteration to the natural system by utilizing datasets including river discharge, tidal currents, winds and wave activities to further combine with photographic, bathymetric,...
Tipo: Text
Palavras-chave: Estuaries; Man-induced effects; Estuarine dynamics; Tidal flats; Salt marshes; Dams.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00639/75120/75516.pdf

L'argent (Ag, nanoAg) comme contaminant émergeant dans l'Estuaire de la Gironde : évaluations scientifiques et gouvernance des risques
Provedor de dados: 5
Autores: Salles, Denis; Roumezi, Alexis; Lanceleur, Laurent; Schaefer, Jorg; Petit, Jerome; Blanc, Gerard; Coynel, Alexandra; Chiffoleau, Jean-francois; Auger, Dominique.
This article presents the results of multidisciplinary research (geochemistry, sociology) into the increasing concentrations of silver (Ag and nanoAg) in the environment and their potential impact on aquatic environments. We investigate simultaneously the risk of contamination of these environments by silver and the process of the social and political construction of this risk by water managers, health authorities, agencies and committees responsible for expert evaluations, environmental associations, and potential users of silver or nano-silver. Four updated models of risk construction allow us to understand the logic of arguments mobilized at this stage of the emerging risk. This interdisciplinary cooperation opens up possibilities for dealing with some...
Tipo: Text
Palavras-chave: Environment; Estuaries; Geochemistry; Interdisciplinary communication; Nanotechnology; Risk assessment; Risk management; Silver; Sociology; Water pollutants.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00156/26736/24939.pdf

Strategie d''etude des suspensions mise en oeuvre en Baie de Seine
Provedor de dados: 5
Autores: Lafite, R; Lamboy, M.
The results of research lead by this laboratory have struck upon the qualitative and textural diversity of suspended particulate matter. This diversity has followed the various techniques for sampling and the adjustment of a methodology which correlate, quantitative data analysis.
Tipo: Text
Palavras-chave: Estuarine front; River plumes; Estuaries; Marine environment; Zonal distribution; Mathematical analysis; Composition; Particle concentration; Turbidity; Granulometry; Methodology; Sampling; Particle distribution; Suspended particulate matter.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1276.pdf

3D modelling in the Sado estuary using a new generic vertical discretization approach
Provedor de dados: 5
Autores: Martins, F; Leitao, P; Silva, A; Neves, R.
Sado estuary (Portugal) is a mesotidal well-mixed estuary. The flow however, displays strong three-dimensional features associated with bathymetry variations. The flow is simulated using a three-dimensional primitive equation model based on the finite-volume method and incorporating a new concept for the vertical discretization. The innovative features of the model are analysed and the advantages of the finite-volume method to implement the generic vertical discretization are put into evidence. The model was validated using water level, velocity and salinity measurements in several stations along the estuary. Results show the influence of main channel's strong curvature on the generation of secondary flows inside the estuary. The steep bathymetry of the...
Tipo: Text
Palavras-chave: Estuaires; Modélisation numérique; Écoulements secondaires; Recirculation verticale; Discrétisation verticale générique; Estuaries; Numerical modelling; Secondary flows; Vertical recirculation; Generic vertical discretization.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00291/40270/38641.pdf

Suspended sediment fluxes in a shallow macrotidal estuary
Provedor de dados: 5
Autores: Moskalski, Susanne; Floc'H, France; Verney, Romaric.
Residual suspended sediment flux in estuaries is dependent on water level, velocity, and suspended sediment concentration (SSC), but complex interactions between these variables and other forcing mechanisms can lead to drastic differences in the magnitude and direction of sediment flux. The goal of this study was to quantify residual suspended sediment flux in a shallow, macrotidal estuary, and to determine its most important forcing mechanisms, using the Dyer flux decomposition equation and a simplified analytical model. Water level, velocity, and acoustic backscatter were measured in the Aulne River estuary in Brittany, France, and acoustic backscatter converted to SSC. The vertical tide was slightly flood dominant near the mouth, but strongly flood...
Tipo: Text
Palavras-chave: Estuaries; Estuarine processes; Sediment flux decomposition; Brittany; Europe.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00588/70046/67981.pdf

Nitrate respiration and nitrification in estuarine sediments.
Provedor de dados: 5
Autores: Herbert, R.
Seasonal data and depth profiles using super(15)N-labelled NO sub(3)u- show that denitrification (77-90% of NO sub(3)u- respired) rather than NO sub(3)u- dissimilation to NH sub(4)u+ was the principal route of nitrate reduction in Kingoodie Bay sediments. Populations of both groups of NO sub(3)u- reducing bacteria were highest in the 0-20 mm horizon in those sediments where highest rates of NO sub(3)u- respiration were recorded (28.56 mu g N.d super(-1) dry wt. sediment super(-1)). Autotrophic nitrification rates shared a marked seasonality with highest rates (0.92 mu g N.d super(-1).g dry wt. sediment super(-1)) occurring during the summer. Maximum populations of autotrophic nitrifying bacteria were also found in the 0-20 mm sediment horizon and these...
Tipo: Text
Palavras-chave: Seasonal variations; Bacteria; Estuaries; Sediment chemistry; Biogeochemistry; Ammonia; Nitrates; Nitrogen cycle.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-971.pdf

Effects of environmental conditions on the sessile existence of an estuarine sediment bacterium.
Provedor de dados: 5
Autores: Geesey, G; Salas, S; Mittelman, M.
A submerged glass coverslip technique was developed to determine dissolved organic nutrient uptake by adherent cells of a sediment isolate of Enterobacter cloacae . Cells which colonized the coverslips in swirling culture flasks during anaerobic growth remained firmly attached during manipulations employed to determine uptake of radiolabeled glucose by the adherent population. The attached cells were capable of a more rapid rate of glucose uptake than free cells. Lineweaver-Burk plots demonstrated different glucose uptake kinetics for the 2 cell populations. The data suggest that physiological changes occur in cells soon after they become attached to surfaces. These changes appear to enhance the metabolic activity of the adherent population.
Tipo: Text
Palavras-chave: Enterobacter cloacae; Adhesion; Glucose; Environmental effects; Bacteria; Sediments; Estuaries; Sessile species; Culture media; Metabolism; Dissolved oxygen; Microbiological analysis.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-967.pdf

Contribution de l''etude des suspensions a la comprehension des mecanismes hydrosedimentaires estuariens et littoraux en Manche centrale et orientale
Provedor de dados: 5
Autores: Dupont, J; Lafite, R; Lamboy, M.
Satellite imagery shows the turbid and thermal plume of the Seine River and littoral zone of Picardie and Haute-Normandie. The suspensions have been analysed in conformity with a strategy elaborated in 1985 by the authors. In this macrotidal coastal environment they have attempted to draw the dynamic specificities and the material characteristics.
Tipo: Text
Palavras-chave: Estuarine front; Harbours; Coastal zone; Estuaries; Marine environment; Composition; Particle concentration; Granulometry; Hydrodynamics; River plumes; Suspended particulate matter.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1277.pdf

Chitin/toxicant interactions and microbial degradation within estuarine ecosystems.
Provedor de dados: 5
Autores: Portier, R; Meyers, S.
The environmental effect and fate of several agricultural and industrial source toxicants were evaluated in controlled laboratory microcosm systems in the presence of the aminopolysaccharide polymer, chitin. Toxicants examined included methyl parathion, phenol, pentachlorophenol, 2,4 dichlorophenol, 1,2 dichloroethane and Kepone. Microcosm operating parameters, including pH/Eh, salinity, temperature, flow rate and sediment/water interface conditions, were based on comparable in situ measurements. Fate analysis predictions were based on mineralization of the parent toxicant compound as measured by chromatographic analysis or super(14)CO sub(2) expiration. Chitin, amended to continuous flow microcosms, promoted either cometabolic or cooxidative...
Tipo: Text
Palavras-chave: Controlled conditions; Chemical pollutants; Industrial wastes; Pesticides; Metabolism; Food webs; Biodegradation; Ecosystems; Microorganisms; Environmental effects; Brackishwater pollution; Estuaries; Toxicants; Chitin.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1011.pdf

Importance et role du materiel organique vivant et inerte dans les suspensions de la Baie de Seine
Provedor de dados: 5
Autores: Dupont, J; Lafite, R.
Living and inert organic matter take an important place inside suspensions in Seine Bay. There particulate matter and the organo-mineral particles can induce granulometric modes, which constitute a determinant component for dynamics characterizing of suspensions. Organic fraction, in particular, plankton (diatoms and zooplankton) is a main factor in open sea which can concentrate when coming into contact with mass water fronts. Organo-mineral aggregates are present in all estuaries. Importance and action of this organic particulate matter are studied for a best knowledge of this ecosystem.
Tipo: Text
Palavras-chave: Zonal distribution; Estuaries; Species diversity; Plankton; Suspended inorganic matter; Sedimentation; Hydrodynamics; Suspended organic matter.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1278.pdf

An Integrated Biomarker Approach Using Flounder to Improve Chemical Risk Assessments in the Heavily Polluted Seine Estuary
Provedor de dados: 5
Autores: Borcier, Elodie; Charrier, Gregory; Couteau, Jérôme; Maillet, Géraldine; Le Grand, Fabienne; Bideau, Antoine; Waeles, Mathieu; Le Floch, Stephane; Amara, Rachid; Pichereau, Vianney; Laroche, Jean.
The objective of this study was to develop an integrative approach in ecotoxicology (from biomarkers to population genetics) to assess the ecological status of fish populations. Flounders (Platichthys flesus) collected after the spawning season in the heavily polluted Seine estuary were compared with the moderately polluted Bay of Douarnenez. The muscle energetic reserves were highly depleted in Seine vs. Douarnenez fish. The Seine fish displaying a reduced capacity to manage the oxidative stress and a higher energetic metabolism. An increase in the content of muscle membrane phospholipids (sphingomyelin, phosphatidylserine, free sterols) was detected in the Seine vs. Douarnenez fish. The data integration allowed to hypothesize relationships between...
Tipo: Text
Palavras-chave: Platichthys flesus; Estuaries; Biomarkers; Bioenergetics; Polar lipids; Population genetics.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00658/76981/78238.pdf

Anthropogenic disturbance on nursery function of estuarine areas for marine species
Provedor de dados: 5
Autores: Courrat, A.; Lobry, Jeremy; Nicolas, D.; Laffargue, Pascal; Amara, R.; Lepage, M.; Girardin, M.; Le Pape, O.
Estuaries serve as nursery grounds for many marine fish species. However increasing human activities within estuaries and surrounding areas lead to significant habitat loss for the juveniles and decrease the quality of the remaining habitats. This study is based on the data of 470 beam trawls from surveys that were conducted in 13 French estuaries for the purpose of the European Water Framework Directive. It aimed at testing the effects of anthropogenic disturbances on the nursery function of estuaries. With a multispecific approach based on ecological guilds, two fish metrics, abundance and species richness of Marine juvenile migrant fishes, were used as proxies for the estuarine nursery function. Indices of heavy metal and organic contaminations were...
Tipo: Text
Palavras-chave: Contamination; Anthropogenic disturbances; Fish indicators; Estuaries; Nursery grounds; Essential fish habitat.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6291.pdf

A spatially explicit ecosystem model of seston depletion in dense mussel culture
Provedor de dados: 5
Autores: Grant, J; Bacher, Cedric; Cranford, P; Guyondet, T; Carreau, M.
A fully-coupled biological-physical-chemical model of a coastal ecosystem was constructed to examine the impact of suspended mussel culture on phytoplankton biomass in Tracadie Bay, Prince Edward Island, Canada. Due to the extent of mussel culture there, we hypothesised that shellfish filtration would control the concentration and distribution of phytoplankton and other suspended particles in the bay. Circulation was delineated with a tidally-driven 2D numerical model and used to drive an ecosystem model with a focus on pelagic components including phytoplankton production, nutrients, detritus, and mussels. The benthos were treated as a sink. Nutrients and seston were forced by tidal exchange and river input, with phytoplankton additionally forced by...
Tipo: Text
Palavras-chave: Towed sensors; Nutrient dynamics; Circulation model; Phytoplankton; Carrying capacity; Shellfish aquaculture; Estuaries; Ecosystem model.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-6951.pdf

Southampton water and the Solent: Biological effects of the multi-use of an estuarine system.
Provedor de dados: 5
Autores: Lockwood, A.
An outline is provided of (1) some factors which have influenced the clam and oyster populations of the area (2) the effect of nutrient load on phytoplankton production (3) the correlation between Mesodinium blooms and the summer oxygen levels in the stratified part of the estuary and (4) a description of the fauna and flora in regions adjacent to some industrial inputs.
Tipo: Text
Palavras-chave: Aquatic communities; Ecosystems; Coastal zone management; Oyster fisheries; Oxygen depletion; Algal blooms; Phytoplankton; Estuaries; Environmental impact.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1310.pdf

Comportement géochimique des herbicides et de leurs produits de dégradation en milieu estuarien et marin côtier
Provedor de dados: 5
Autores: Munschy, Catherine.
The presence and geochemical behaviour of herbicides were investigated in estuarine and marine waters of the French coasts (Seine, Charente, Gironde estuaries and Rhône delta). These organic contaminants were quantified by capillary Gas Chromatography (GC) using Nitrogen-Phosphorus Detecter and identified by GCIMS (Mass Spectrometry). A liquid-solid extraction method using XAD-2 resins was developed,  allowing the analysis of both chloro-triazines and their degradation products in the nanogram per litre (ng.l-1) detection range. Different types of chemicals were identified in the estuarine and coastal waters: triazine, amide and acetanilide herbicides. These compounds are mainly present in the water phase, with less than 1% associated with particulate...
Tipo: Text
Palavras-chave: Estuaires; Herbicides; Chloro-triazines; Dé-éthylatrazine; Comportement géochimique; Phase dissoute; Conservativité; Flux; Estuaries; Herbicides; Chloro-triazines; De-ethylatrazine; Geochemical behaviour; Conservative mixing; Flux.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00443/55443/56962.pdf

Présence du genre Listeria dans les coquillages issus de zones conchylicoles du Finistère
Provedor de dados: 5
Autores: Monfort, Patrick; Piclet, Guy; Le Naour, Gwenael; Le Saux, Jean-claude; Raguenes, Pierre; Boulben, Sylviane; Le Gal, Dominique; Minet, Jacques; Venien, Jacqueline; Cormier, Michel; Plusquellec, Alain.
Cette étude a porté sur la recherche des bactéries appartenant au genre Listeria (Listeria spp.) dans 61 échantillons de coquillages issus de quelques zones de production situées dans le département du Finistère. Ces investigations, effectuées au cours de deux périodes (janvier-février et juillet -août 1994), ont mis en évidence la présence régulière des Listeria dans les bivalves (L. spp.= 49.2% ), la part non négligeable de Listeria monocytogenes (L.m. = 11.5%), la multiplicité d'espèces sur quelques échantillons testés (Baie de Morlaix) ainsi qu'une large distribution de ce genre bactérien. Par ailleurs, il est démontré une incidence saisonnière,la période hivernale se révélant la plus critique. Cette information, intéressante sur le plan sanitaire,...
Tipo: Text
Palavras-chave: Listeria; Bactéries pathogènes; Coquillages; Produits marins; Estuaires; Listeria; Pathogenic bacteria; Shellfishes; Seafood products; Estuaries.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00104/21555/19134.pdf

Non-indigenous marine and estuarine species in The Netherlands
Provedor de dados: 16
Autores: Wolff, W.J.
An overview is presented of non-indigenous marine and estuarine plant and animal species recorded from The Netherlands. In this list both exotic species from outside NW Europe and non-indigenous species from elsewhere in NW Europe are enumerated. Species that have been suggested to be non-indigenous in The Netherlands but for which insufficient evidence could be found are discussed shortly as well. The list is based mainly on literature data supplemented by own observations of the author. At least 99 plant and animal species have been introduced from elsewhere in the world. Another 13 species have been introduced from other parts of NW Europe. The third category of dubious non-indigenous species enumerates 37 species. The list is preceded by an...
Tipo: Article / Letter to the editor
Palavras-chave: Non-indigenous species; Introduced species; Exotic species; Alien species; Invasive species; The Netherlands; North Sea; Wadden Sea; Oosterschelde estuary; Estuaries; 42.94.
Ano: 2005
URL: http://www.repository.naturalis.nl/record/210096

Spatial and temporal distribution of fish eggs and larvae in a subtropical coastal lagoon, Santa Catarina State, Brazil
Provedor de dados: 83
Autores: Macedo-Soares,Luis C. P.; Birolo,Alesandra B.; Freire,Andrea S.
This study investigated the variation in abundance, distribution and composition of ichthyoplankton in a lagoon in southern Brazil through the year and at different stations within the lagoon. Ibiraquera Lagoon is a shallow coastal lagoon connected to the sea by a semi-permanent sandbar. Ichthyoplankton samples were collected monthly from December 2003 to December 2004, with a 200 µm mesh net using horizontal surface hauls. A colder, drier period was detected, contrasting with warm months during which salinity varied depending on rainfall and whether the sandbar was open or closed. The mean abundance of ichthyoplankton over the study period was 459.6 ± 76.2 (SE) eggs · 100 m-3 and 63.6 ± 7.9 (SE) larvae · 100 m-3, and they were present during all months....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyoplankton; Estuaries; Spawning and Nursery places.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200015

Plasma ion levels of freshwater and marine/estuarine teleosts from Southern Brazil
Provedor de dados: 83
Autores: Becker,Alexssandro Geferson; Gonçalves,Jamile Fabbrin; Toledo,Jaderson dos Anjos; Burns,Marcelo D. M.; Garcia,Luciano de Oliveira; Vieira,João Paes; Baldisserotto,Bernardo.
The purpose of this study was to investigate Na+, Cl-, K+, Ca2+, and Mg2+ levels in the plasma of freshwater and marine/estuarine teleosts collected at different salinities (0 to 34) from the estuarine and freshwater portions of the São Gonçalo channel in Southern Brazil. Any relationship between plasma ion levels and salinity and the capacity of ionic regulation of teleosts found at three or more different salinities (Genidens barbus and Micropogonias furnieri) was also investigated. Results showed no relationship between plasma ion levels and salinity when considering all species together, but the two species collected from three or more different salinities showed a significant positive relationship between plasma ion levels and salinity, indicating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ariidae; Estuaries; Ionoregulation; Osmoregulation; Salinity; Sciaenidae.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400021

Ecomorphological patterns of the fishes inhabiting the tide pools of the Amazonian Coastal Zone, Brazil
Provedor de dados: 83
Autores: Soares,Bruno Eleres; Ruffeil,Tiago Octavio Begot; Montag,Luciano Fogaça de Assis.
The present study was based on the identification of the ecomorphological patterns that characterize the fish species found in tide pools in the Amazonian Coastal Zone (ACZ) in the Pará State, Brazil. Representatives of 19 species were collected during two field campaigns in 2011. The dominance, residence status, and trophic guild of each species were established, and morphometric data were obtained for up to 10 specimens of each species. A total of 23 ecomorphological attributes related to locomotion, position in the water column, and foraging behavior were calculated for the analysis of ecomorphological distance. Principal Component Analysis (PCA) was utilized for the evaluation of ecomorphological attributes that explained the variation among species....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecomorphology; Habitat use; Resource partitioning; Intertidal zone; Estuaries.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400845

Larval fish assemblages in nearshore waters of southeast Gulf of California: vertical and temporal patterns
Provedor de dados: 83
Autores: Amezcua,Felipe; Rodríguez-Preciado,José Alberto; Calderón-Pérez,Antonio; Rendón-Rodríguez,Sergio; Green,Lucinda; Chazarreta,Carlo Javier.
Abstract The influence of salinity and temperature on larval fish assemblages, as well as, temporal and vertical patterns on larval fish assemblages off the inlet of the Presidio River, southeast coast of the Gulf of California were evaluated. Samplings for ichthyoplankton and environmental parameter measurements were carried out at three depths, in five sampling sites, during September and December 1994, and April and June 1995. Anchovies and herrings (Clupeiformes) were the most abundant larval fish accounting for 77% of the total abundance. A significant relationship between salinity and the abundance of larval herrings (Opisthonema medirastre and O. dovii) and between the water temperature and the abundance of the weakfish (Cynoscion reticulatus) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estuaries; Ichthyoplankton; Larval fish distribution; Sinaloa; Vertical distribution.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100212

Ecological boundaries in estuaries: macrobenthic ß-diversity in the Rio de la Plata system (34-36°S)
Provedor de dados: 20
Autores: Giberto, D.A.; Bremec, C.; Cortelezzi, A.; Rodrigues Capitulo, A.; Brazeiro, A.
In this study, we analyse spatial patterns of macrobenthic communities of the Río de la Plata system, and assess the species turnover or beta diversity and its relationship with environmental gradients. Macrobenthic samples and physico-chemical parameters were collected from 20 sampling sites along a transect of 560 km, including the freshwater (FW), estuarine (ES)and marine (MA)sectors. Three main assemblages corresponding to the above mentioned sectors were defined with multivariate analysis (cluster, MDS). In total 134 taxa were recorded, 81 in MA, 33 in FW and 38 in ES, represented mainly by polychaete, mollusc and crustacean species. Depth, salinity and clay showed the strongest correlation with the observed faunal patterns (pw=0.62; BIO-ENV...
Tipo: Journal Contribution
Palavras-chave: Macrobenthos; Assemblages; Brackishwater environment; Estuaries; Estuaries; Macrobenthos; Brackishwater environment; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_12312; Http://aims.fao.org/aos/agrovoc/c_1050.
Ano: 2007
URL: http://hdl.handle.net/1834/1571

Estudio del meiobentos en el Golfo de Guayaquil, (Río Guayas, Canal Cascajal y Estero Salado), Ecuador, en agosto de 1996
Provedor de dados: 20
Autores: Cruz, M.
Con este aporte al conocimiento de la meiofauna del Golfo de Guayaquil, se pretende comenzar a difundir los diferentes grupos de organismos que antes de este trabajo no se conocían que existían en nuestro país, esperando que se incentiven nuevos trabajos de investigación en el campo de la meiofauna, para llegar a saber realmente las especies que tenemos en el ecosistema más "rico y/o productivo" del Ecuador y del Pacífico Sud-este.
Tipo: Journal Contribution
Palavras-chave: Meiobenthos; Sediments; Rivers; Marshes; Estuaries; Rivers; Estuaries; Meiobenthos; Marshes; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_12481; Http://aims.fao.org/aos/agrovoc/c_4631.
Ano: 1998
URL: http://hdl.handle.net/1834/2306

The Invasive Rapa Whelk Rapana venosa (Valenciennes 1846): Status and potential ecological impacts in the Rio de la Plata estuary, Argentina-Uruguay
Provedor de dados: 20
Autores: Giberto, D.A.; Bremec, C.; Schejter, L.; Schiariti, A.; Mianzan, H.W.; Acha, E.M.
Recent range extensions of the invasive rapa whelk Rapana venosa, biological data of the population and possible ecological impacts on the food webs of the Rio de la Plata estuary are presented. A total of 41 rapa whelks and 21 egg capsules were collected between February 2004 and March 2006. Specimens were found all over the mixohaline waters of the estuary, with records off Montevideo, Samborombon Bay and off Punta Rasa. Specimens ranged between 28 and 120 mm shell length. Almost all R. venosa presented epibionts all over the shell, suggesting an exposed lifestyle. Egg-masses were attached to specimens of R. venosa, debris and plastic garbage. The spatial distribution of R. venosa within the estuary was coupled with the spatial distribution of Mactra...
Tipo: Journal Contribution
Palavras-chave: Estuaries; Introduced species; Predators; Food webs; Estuaries; Predators; Food webs; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_6163; Http://aims.fao.org/aos/agrovoc/c_10973.
Ano: 2006
URL: http://hdl.handle.net/1834/1572

Geomorfología e hidrografía de los estuarios
Provedor de dados: 20
Autores: Piccolo, M.C.; Perillo, G.M.
Estuaries are coastal-water in which marine and freshwater environments interact. They respond to natural changes, but specially to anthropogenic factors. The definition, environmental factors and classification of estuaries are analyzed. A review is presented of the present status of knowledge on the geomorphology and hydrography of Argentine estuaries.
Tipo: Book Section
Palavras-chave: Estuaries; Estuarine dynamics; Coastal oceanography; Coastal waters; Geomorphology; Estuaries; Coastal waters; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1997
URL: http://hdl.handle.net/1834/1722

Sedimentation, transport und erosion an der  Nordküste Kolumbiens zwischen Barranquilla und der Sierra Nevada de Santa Marta
Provedor de dados: 20
Autores: Erffa, A. Frhr. von.
El Río Magdalena desemboca actualmente en el mar Caribe, por el extremo occidental de este territorio y ha formado varios deltas, estos se han originado en tres fases comprendidas en el cuaternario reciente. Los dos más antiguos quedaron destruidos por la erosión y solamente son detectados en la morfología submarina. El delta siguiente en antigüedad, alcanzó su mayor amplitud hace 2.400 años aproximadamente La etapa de destrucción de este delta se inició por aquellos tiempos, y aún continua en actividad. El delta más reciente se está formando al frente de la boca actual del Río Magdalena. Se describen los rasgos topográficos, sedimentológicos y la distribución de la fauna bentónica, en los sectores NE y E de la plataforma submarina de San Andrés. La...
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Geology; Sediments; Erosion; Coastal erosion; Sediment transport; Estuaries; Geology; Erosion; Coastal lagoons; Coastal erosion; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_3232; Http://aims.fao.org/aos/agrovoc/c_2651; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_9949.
Ano: 1973
URL: http://hdl.handle.net/1834/3254

Hidroides de tres esteros adyacentes a Mazatlan, Costa Noroeste de Mexico
Provedor de dados: 20
Autores: Alvarez-León, R.; Wedler, E.
Se reporta por primera vez el hallazgo de siete especies de hidroides: Corydendrium  parasiticum, Bougainvillia crassa (?), Eudendrium carneum, Eudendrium ramosum (?),  Halecium muricatum, Clytia striata y Halopteris constricta(?) en el sistema de esteros adyacentes a Mazarían.
Tipo: Journal Contribution
Palavras-chave: Estuaries; New records; Estuaries; Http://aims.fao.org/aos/agrovoc/c_2673.
Ano: 1982
URL: http://hdl.handle.net/1834/3956

Geomorphology, ichthyofauna, water quality and aesthetics of south african estuaries
Provedor de dados: 20
Autores: Cooper, J.A.G.; Harrison, T.D.; Ramm, A.E.L.
The South African 3 000 km coastline has approximately 370 outlets to the sea ranging from small coastal streams to large permanently open tidal estuaries. The current state of scientific information on the vast majority of these systems, however, is virtually nil. As part of a national program to assess the state of South Africa’s estuarine environment, basic surveys were conducted on these systems during the period 1992 to 1999. This included ichthyofauna (fish), water quality, and geomorphological and aesthetic observations. Some 67% of South Africa’s ‘estuaries’ have been surveyed to date. This baseline data has been analysed and synthesised to render it understandable to the non-specialist but at a sufficiently high level to inform potential end users...
Tipo: Working Paper
Palavras-chave: Water quality; Geomorphology; Ichthyofauna; Estuaries.
Ano: 2000
URL: http://hdl.handle.net/1834/660

Influencia de las características hidrodinámicas y morfométricas en la distribución de 210 pb en los sedimentos superficiales de la bahía de Cienfuegos, Cuba.
Provedor de dados: 20
Autores: Muñoz Caravaca, A.; Herrera Marrero, R. H.; Fichez, R.; Douillet, P.; Díaz García, O.; Fernández, J. M.
Se presenta la distribución de 210Pb en los sedimentos  de la Bahía de Cienfüegos colectados durante la campaña  oceanográfica Jagua, desarrollada entre los meses Mayo a Junio del 2006. El 210Pb  alcanzó un valor medio de  71.3 mBqKg-1 en un rango de 30.8 - 205.5  mBqKg-1. Existe un área de acumulación de 210Pb en el lóbulo sur de  la Bahía de Cienfüegos que responde a las características morfológicas e hidrodinámicas de este sector de la  bahía, en particular al patrón de circulación de las aguas y la profundidad de la bahía.
Tipo: Journal Contribution
Palavras-chave: Estuaries; Sediments; Bays.
Ano: 2010
URL: http://hdl.handle.net/1834/4615

Estructura del manglar en el Delta exterior del Río Magdalena-Ciénaga Grande de Santa Marta, una zona tensionada por alteraciones del equilibrio hídrico
Provedor de dados: 20
Autores: Serrano-Díaz, L.A.; Botero, L.; Cardona, P.; Mancera-Pineda, J.E.
La estructura de los bosques de manglar del Delta Exterior del Río Magdalena-Ciénaga Grande de Santa Marta (DERM-CGSM) y algunas variables abióticas de sus suelos fueron cuantificadas con el objeto principal de proveer una línea de base para evaluaciones futuras de cambios en el ecosistema, como consecuencia de la reapertura de caños de agua dulce provenientes del Río Magdalena. Se encontró que los bosques que rodean el complejo lagunar exhiben diferentes grados de desarrollo estructural, desde casi ningún desarrollo (completamente muertos) hasta bosques complejos. El mejor desarrollo estructural se encontró en las estaciones localizadas sobre el Caño El Jobo (JOB) y sobre la Ciénaga de la Aguja (AGU) en la zona suroccidental del área de estudio. La...
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Mangroves; Ecology; Population structure; Salinity effects; Lethal limits; Habitat; Redox potential; Condition factor; Redox potential; Estuaries; Ecology; Population structure; Coastal lagoons; Mangroves; Http://aims.fao.org/aos/agrovoc/c_6482; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_16190.
Ano: 1995
URL: http://hdl.handle.net/1834/3814

Distribución y abundancia del plancton estuarino en el Canal El Morro, Posorja (junio 2006)
Provedor de dados: 20
Autores: Torres, G.; Andrade, C.
El proyecto de "Gestión Ambiental de la Armada" en el área estuarina adyacente al reten Naval de Posorja, tuvo como objetivo realizar un muestreo de plancton y sus condiciones ambientales actuales, a fin de conservar los ecosistemas marino-costeros y su diversidad biológica para el beneficio de la población local, la ciencia y educación establecido en la estrategia de desarrollo sustentable adaptadas al Cambio Climático (Gaibor, et al., 2000).
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Zooplankton; Abundance; Estuaries; Geographical distribution; Phytoplankton; Zooplankton; Estuaries; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2007
URL: http://hdl.handle.net/1834/2361

Grossissement des juveniles de palourdes "Ruditapes decussatus" (l., 1758), sur l’estran de Zarat (golfe de Gabès, Tunisie), dans des conditions expérimentales.
Provedor de dados: 20
Autores: Zouari, M.; Hitonori, N.; Lymayem, Y.; M'Rabet, R.; Dhraief, M.N.; Missaoui, H.; Guergej, H.; Kraiem, M.M.
Le potentiel de grossissement de la palourde Ruditapes decussatus (L. 1758), élevée dans des poches de filet de 1 m2 de surface, a été évalué sur l’estran de Zarat (golfe de Gabès) pour la période de juillet 2006 à novembre 2007. Dans une première expérience, trois niveaux de la marée, représentant des chenaux de drainage de l’eau, existants entre la ligne de marée haute et celle de marée basse, ont été comparés sur une durée de 16 mois. Chacun des niveaux a été représenté par un triplicata de sacs de 150 individus. Dans une seconde expérience, trois densités de mise en charge différentes ont été comparées sur une durée de 17 mois. Pour cela, deux sacs de 100 individus chacun et deux autres de 200 individus chacun ont été alignés à l’expérience précédente,...
Tipo: Journal Contribution
Palavras-chave: Clam culture; Comparative studies; Environmental conditions; Estuaries; Experimental culture; Growth; Growth rate; Marine aquaculture; Marine molluscs; Population density; Rearing; Stocking density; Clams.
Ano: 2009
URL: http://hdl.handle.net/1834/4495

Estudiosd bacteriológicos en la Ciénaga Grande de Santa Marta, Colombia
Provedor de dados: 20
Autores: Jeske, R.
Mientras predominan las aguas salobres en la Ciénaga Grande se destacan las formas bacterianas halófilas. Durante la época de lluvias (invierno, disminuye la salinidad, sin embargo las formas halófilas aumentan en número. La reproducción de bacterias de agua dulce se inicia sólo cuando la salinidad llega bajo un valor de un 10°/o/o. Estas alcanzan su valor máximo temporáneo en salinidades de un 3°/o/o. Al mismo tiempo disminuyen las formas halófilas. Observaciones sobre contaminación fecal se realizaron en las aguas de la Ciénaga. Como indicador se utilizó Escherichia coli. En las inmediaciones de los pueblos de pescadores es posible detectar cierta contaminación. En cambio, en el resto de la Ciénaga, en contados casos se observa E. coli. La presencia de...
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Microbiological analysis; Microbial contamination; Estuaries; Microbial contamination; Coastal lagoons; Microbiological analysis; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_37547; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_25302.
Ano: 1976
URL: http://hdl.handle.net/1834/3322

Maritrema magdalenae n.sp., ein Trematode von der Isla de Salamanca, Nordkolumbien
Provedor de dados: 20
Autores: Werding, B.
Se da la descripción de Maritrema magdalenae n. sp. del intestino de Limnodromus griseus, de la Isla de Salamanca (Colombia). De las características morfológicas resulta que M. magdalenae es una especie todavía no descrita.
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; New species; Endoparasites; Aquatic birds; Estuaries; Endoparasites; Aquatic birds; Coastal lagoons; New species; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_10603; Http://aims.fao.org/aos/agrovoc/c_8898; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_15733.
Ano: 1973
URL: http://hdl.handle.net/1834/3320

Productividad primaria en la Ciénaga Grande de Santa Marta, Colombia
Provedor de dados: 20
Autores: Hernández-J., C.A.; Gocke, K.
Entre enero 1987 y enero 1988 se estudiaron la productividad primaria y una serie de factores relacionados con ella en la Ciénaga Grande de Santa Marta. La Ciénaga es una laguna costera de 423 km2 de área y de 1.6 m de profundidad media, situada en la costa caribeña de Colombia y sometida a una fluctuación fuerte de salinidad. Se trata de un sistema acuático con una alta concentración de seston y una gran productividad primaria. La concentración de clorofila "a" Fluctuó entre 5.6 y 181 ug I ' , el promedio anual fue de 59 ug I ' . La concentración de proteínas 0sciló entre 0.9 y 9.5 mg I"' , el promedio anual fue de 4.2 mg T1 . La productividad primaria bruta anual en la parte central de la Ciénaga fue de 1690 g C m-2 . Los valores extremos en todo el...
Tipo: Journal Contribution
Palavras-chave: Primary production; Turbidity; Nutrients (mineral); Salinity; Hydrology; Coastal lagoons; Estuaries; Primary production; Turbidity; Estuaries; Salinity; Hydrology; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_34329; Http://aims.fao.org/aos/agrovoc/c_15043; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_3731; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1990
URL: http://hdl.handle.net/1834/3886

Note sur les baleines échouées en estuaires artificiels en Côte d'Ivoire.
Provedor de dados: 20
Autores: Amon-Kothias, J.B.; N'goran, N.Y.
Des baleines échouées dans des eaux estuariennes ont été identifiées en Côte d'Ivoire: le Cachalot macrocéphale, Physeter catodon L.1758 et le rorqual commun, Balaenoptera physalus L.1758.
Tipo: Journal Contribution
Palavras-chave: Whale stranding; Estuaries.
Ano: 1991
URL: http://hdl.handle.net/1834/5522

Ración diaria y consumo de alimento de la población de Anchovia clupeoides (pisces: Engraulidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano
Provedor de dados: 20
Autores: Duque, G.; Acero, P.A.
In tropical estuaries, most fishes feed at different hours during the day. To determine the daily ration and consumption of the Ciénaga Grande de Santa Marta (CGSM) population of Anchovia clupeoides monthly samplings of a 24 h cycle were taken at the coastal lagoon between October 1995 and June 1996. A total of 4389 specimens were examined. The population of A. clupeoides consumes almost twice its weight per year, representing a 0.53% of its body weight per day. Though the CGSM presents a high primary production (990 gC/m2 /year), the percentage that is transferred to the population of A. clupeoides is relatively low (0.055%). Hence, it seems that the high productivity of the CGSM is not being transferred to upper trophic levels due to the kind of...
Tipo: Journal Contribution
Palavras-chave: Estuaries; Trophic relationships; Estuaries; Http://aims.fao.org/aos/agrovoc/c_2673.
Ano: 2006
URL: http://hdl.handle.net/1834/1971

Evaluación de la tasa fotosintética del alga verde Rhizoclonium riparium (Roth) Kützing ex Harvey, expuesta a cobre y su uso como indicador de contaminación por metales en aguas estuarinas
Provedor de dados: 20
Autores: Montoya, W.; Peña, E.J.; Benítez, R.
Algae have been used as bioindicators by having several advantages such as they have short life cycles, they can take up nutrients directly from water, they are generally easy to collect in sufficient amounts from various habitats; and they readily accumulate compounds present in seawater, making tissue analyses reliable indicators of water quality. In order to evaluate the bioremoval capability of the green alga Rhizoclonium riparium, the photosynthetic responses to heavy metal pollution under different sublethal concentrations of copper was assessed. Photosynthetic rates were significantly low (p &lt;0.05) at low copper concentrations, between (0.01 y 10 mg/l). Maximum photosynthetic values were shown at 30 y 60 mg/l and almost cero at 150 mg/ l of Cu....
Tipo: Conference Material
Palavras-chave: Heavy metals; Biological stress; Algae; Indicator species; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Heavy metals; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Algae; Indicator species; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_1868; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_35790.
Ano: 2006
URL: http://hdl.handle.net/1834/2256

Morfología y sedimentación del sistema estuarino  Estero Salado - Río Guayas
Provedor de dados: 20
Autores: Rada, F.
Durante el período 1984-1985 se realizaron estudios geológicos en el sistema estuarino Estero Salado - Río Guayas, los mismos que comprendieron trabajos de geomorfología, geofísica (sísmica) y sedimentología. Los resultados de esas investigaciones, que se presentan en este artículo, llevan a establecer las diferencias existentes entre el Estero Salado y Río Guayas como consecuencia probable del mayor aporte de sedimentos y corrientes de agua recibida por el Río Guayas, y de la carga adicional de sedimentos por la construcción de camaroneras y tala de manglares.
Tipo: Journal Contribution
Palavras-chave: Geomorphology; Sediments; Estuarine sedimentation; Estuaries; Estuaries; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1986
URL: http://hdl.handle.net/1834/2143

Estrategia reproductiva de la saraca, Brazilian menhaden, Brevoortia aurea (Pisces: Clupeidae), en el estuario del Río de la Plata
Provedor de dados: 20
Autores: Acha, E.M.
The Brazilian menhaden, Brevoortia aurea, is the only species of genus Brevoortia in South American Atlantic waters, being abundant in the Rio de la Plata estuary.  The temporal and spatial reproductive pattern of this menhaden was analyzed in relation to the major hydrographic features of the region, and the reproductive biology was studied by using histological analysis of ovaries. B.aurea is a multiple spawner with indeterminate annual fecundity. Daily spawning activity was mostly in the afternoon (15:00 - 16:00),based on the incidence of females with both hydrated oocytes and postovulatory follicles. Spawning frequency, determined using the percentage of females with postovulatory follicles, was about 12.  during November.  At this frequency, each...
Tipo: Theses and Dissertations
Palavras-chave: Reproduction; Fecundity; Ovaries; Fish larvae; Eggs; Life history; Brackishwater fish; Spawning grounds; Spawning seasons; Estuaries; Estuaries; Ovaries; Eggs; Life history; Spawning grounds; Reproduction; Fecundity; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_12170; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1999
URL: http://hdl.handle.net/1834/1458

Bodenökologische Untersuchungen auf der Isla de Salamanca, Nordkolumbien
Provedor de dados: 20
Autores: Kunze, Ch.
De ambos lados de la carretera que pasa por la Isla de Salamanca se tomaron muestras de suelo. El contenido de cloruro, nitrógeno y carbono fue mayor en las muestras del lado de la Ciénaga que en las del lado del mar. Con relación a la cantidad de carbono y microorganismos, la producción de CO2 y ammonificación fueron mayores en las muestras del lado del mar. La cantidad de microorganismos parece depender directamente de la cantidad de cloruro en la muestra respectiva.
Tipo: Journal Contribution
Palavras-chave: Soils; Coastal lagoons; Estuaries; Estuaries; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1972
URL: http://hdl.handle.net/1834/3438

Die Hydroiden der Ciénaga Grande de Santa Marta (Kolumbien) und einiges zu ihrer Ökologie
Provedor de dados: 20
Autores: Wedler, E.
En la Ciénaga Grande de Santa Marta viven dos especies de hidróides estuáricas: Calyptospadix cerula Clarke, 1882 y Cordylophora caspia Pallas, 1771. C. caspia, encontrada hasta ahora solo en el canal frente a los Cocos, está completamente desarrollada en salinidades de 0 a 10°/o/o. C. cerula es eurihalina y existe en salinidades de aprox. 3°/o/o hasta valores completamente marinos. Si la salinidad es inferior a 3°/o/o, esta especie pasa a la fase de menontes. El cambio de actividad de ambas especies depende de la salinidad y probablemente también de la temperatura. En C. caspia, la madurez coincide con el período de agua dulce, mientras C. cerula tiene gonóforos desde comienzos de junio hasta fines de septiembre. Si la salinidad en la Ciénaga Grande es...
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Seasonal variations; Estuaries; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1973
URL: http://hdl.handle.net/1834/3309

Diagnóstico del plancton en el estuario de San Lorenzo en agosto 2006 (Esmeraldas-Ecuador)
Provedor de dados: 20
Autores: Torres, G.; Andrade, C.
Se realizó un monitoreo del plancton en el estuario de San Lorenzo en junio 2006. En los resultados se registró 128 especies del fitoplancton (método cuantitativo) y 50 especies (cualitativo). Las diatomeas más representativas fueron S. costatum, T. nitzschioides, P. longissima, L. danicus, Navicula sp., P. sulcata: T. nitzschioides. Thalassiosira sp. y flagelados (cuantitativo); S. costatum, Coscinodiscus sp., N. sigma y P.  Sulcata (cualitativo). La presencia de Gymnodinium sp. P. maximun y M. rubrum podría asociarse con la formación de mareas rojas al interior del estuario. En los resultados del zooplancton registrarón 16 taxas constituidos mayoritariamente por Zoeas de Brachiura y Copépodos, distribudidos en toda el área de estudio principalmente en...
Tipo: Journal Contribution
Palavras-chave: Plankton; Diatoms; Phytoplankton; Zooplankton; Biomass; Fish larvae; Eggs; Abundance; Estuaries; Species diversity; Zooplankton; Biomass; Eggs; Estuaries; Plankton; Phytoplankton; Fish larvae; Species diversity; Diatoms; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_33954; Http://aims.fao.org/aos/agrovoc/c_32657.
Ano: 2007
URL: http://hdl.handle.net/1834/2378

Aspectos biológicos y ecológicos de Mytilopsis sallei (Recluz, 1849) (Bivalvia: Dreissenidae) en bancos de ostra de la Ciénaga Grande de Santa Marta, Caribe colombiano
Provedor de dados: 20
Autores: Puyana, Mónica.
Mytilopsis sallei es una especie que se encuentra ampliamente distribuida sobre sustratos duros en la Ciénaga Grande de Santa Marta, siendo particularmente abundante sobre bancos de ostra de mangle (Crassostrea rhizophorae), donde alcanza densidades de hasta 5000 indiv/m2. Aunque posee una amplia tolerancia a variaciones en la salinidad y temperatura, prefiere aquellos lugares donde la afluencia de aguas dulces es constante. Puede además tolerar aguas turbias con un alto contenido de sedimentos, como en la desembocadura de los ríos. M. sallei no parece aparentemente, competir con la ostra, incluso en aquellos bancos sometidos a intensa explotación. Esto se debe a las preferencias ambientales de cada especie y a la alta productividad de las aguas de la...
Tipo: Journal Contribution
Palavras-chave: Ecology; Population structure; Salinity effects; Temperature effects; Density; Condition factor; Turbidity; Interspecific relationships; Population dynamics; Coastal lagoons; Estuaries; Ecology; Population structure; Turbidity; Estuaries; Density; Population dynamics; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_15043; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_2186; Http://aims.fao.org/aos/agrovoc/c_6111; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1995
URL: http://hdl.handle.net/1834/3802

Análisis de residuos de organoclorados en los sedimentos de zonas de manglar en la Ciénaga Grande de Santa Marta y la Bahía de Chengue, Caribe colombiano
Provedor de dados: 20
Autores: Espinosa, Luisa F.; Ramírez, Gustavo; Campos, Néstor H.
En los sedimentos superficiales aledaños al manglar, de cuatro estaciones dentro de la Ciénaga Grande de Santa Marta y una estación en la Bahía de Chengue, se analizaron las concentraciones de seis residuos de plaguicidas organoclorados (lindano, heptacloro, aldrin, pp'DDE, pp'DDD y pp'DDT), mediante la técnica de cromatografía gas-líquido. Se realizaron muestreos trimestrales entre marzo y diciembre de 1993, tratando de abarcar las principales épocas climáticas de la región (seca, lluviosa menor, seca menor y lluviosa mayor). Mediante análisis de varianza multifactorial se encontraron diferencias significativas solamente en las concentraciones de lindano, heptacloro y pp'DDE, entre las diferentes épocas climática; los otros tres compuestos (aldrin, pp'DDD...
Tipo: Journal Contribution
Palavras-chave: Ecology; Chemical analysis; Salinity effects; Gas chromatography; Organic matter; Coastal lagoons; Estuaries; Mangroves; Ecology; Organic matter; Estuaries; Gas chromatography; Coastal lagoons; Mangroves; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_5387; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_11097; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_16190.
Ano: 1999
URL: http://hdl.handle.net/1834/3804

Evaluación del impacto ambiental sobre las comunidades de protozoos en la desembocadura del Rio Almendares, Ciudad de la Habana, Cuba.
Provedor de dados: 20
Autores: Revilla Alcázar, I.; Prieto Trueba, D.
One of the practical utilities of the protozoa resides in their employment as biological indicators of the degree of environmental contamination. In this work a characterization of the protozoa community is made in the outlet of the river Almendares, which constitutes the most important fluvial current in the Cuban archipelago from the historical point of view, for they were selected it five stations that they were randomized monthly for a two year-old period (1996-1998). Of the 100 identified species 34 constitute new registrations for this segment of the river. The biggest specific richness corresponded to the ciliates, representing 67% of the total of species. The smallest specific richness corresponded to the estuary, where species are included...
Tipo: Conference Material
Palavras-chave: Indicator species; Freshwater pollution; Population density; Estuaries; Estuaries; Indicator species; Population density; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_35790; Http://aims.fao.org/aos/agrovoc/c_6112.
Ano: 2006
URL: http://hdl.handle.net/1834/2253

Aporte al conocimiento del zooplancton de agua dulce y estuarina del río Guayas. Guayaquil - Ecuador
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.
El presente trabajo corresponde al análisis de zooplancton colectado en cinco estaciones localizadas en el río Guayas. La primera estación estuvo situada 10 km. río arriba de la confluencia del río Babahoyo con el río Daule, en un pozo acuífero. Las otras estaciones se situaron en cuatro sitios consecutivos a lo largo del río Guayas. En este trabajo se han identificado 10 especies: Brachionus plicatilis (O. F. Muller) (Rotifera), Alona cambouei Guerne and Richard, 1893; Moina micrura Kurz, 1874 (Cladocera); Acartia tonsa Dana, 1848; Oithona dissimilis Linberg, 1940; Oithona neotropica Herbs, 1967; Oithona oligohalina Fonseca o Bjornberg, 1976; Mesocyclops longisetus (Thiebaud, 1914) y Pseudodiaptomus longispinosus Chad, 1989 (Copepoda). Las especies...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Fresh water; Geographical distribution; Rivers; Estuaries; Brackish water; Zooplankton; Geographical distribution; Rivers; Estuaries; Brackish water; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1049.
Ano: 1998
URL: http://hdl.handle.net/1834/2295

Mangroves and estuaries
Provedor de dados: 20
Mangroves are forests of salt-tolerant trees and shrubs that grow in the shallow tidal waters of estuaries and coastal areas in tropical regions. They require slow currents, no frost and plenty of fine sediment in which to set their roots. Their muddy waters, rich in nutrients from decaying leaves and wood, are home to sponges, worms, crustaceans, molluscs and algae, and provide shelter for marine mammals, snakes and crocodiles. They act as fish nurseries and help feed life further out to sea. QueenslandÕs mangroves, for instance, do much to sustain the Great Barrier Reef, the worldÕs largest coral reef system. Mangroves are also strongly correlated with the presence of shoals of shrimp further offshore. Mangroves extend over 18 million hectares worldwide,...
Tipo: Book Section
Palavras-chave: Mangroves; Estuaries.
Ano: 2001
URL: http://hdl.handle.net/1834/419

Microbentos de las vías de agua alrededor de Guayaquil, durante mayo del 2001
Provedor de dados: 20
Autores: Gualancañay, E.
Se analiza el estudio de la microfauna bentónica y de la micro flora béntica del área de las vías de acceso de la ciudad de Guayaquil que comprende, el Río Guayas, Estero Salado, Canales del Morro y de Jambelí, Estero del Muerto y los puentes internos de la ciudad. La microfauna bentónica debido a la gran sedimentación y por las condiciones anóxicas del área al quedarse sepultados y/o fragmentados estuvieron ausentes en unos casos y en otros con representantes muy aislados. En cambio la microflora béntica tuvo una población más frecuente a pesar de la gran turbidez del área, sin embargo y debido a la gran cantidad de restos vegetales son llevados por las corrientes y de esta manera tiene la capacidad de renovar el oxígeno del agua muy vital para el...
Tipo: Journal Contribution
Palavras-chave: Benthos; Microorganisms; Anoxic sediments; Estuaries; Estuarine organisms; Benthos; Estuaries; Microorganisms; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_4807.
Ano: 2002
URL: http://hdl.handle.net/1834/2258

Zooplancton en el estuario interior del Golfo de Guayaquil, durante mayo del 2001
Provedor de dados: 20
Autores: Naranjo, Ch.
Los objetivos del estudio son conocer la situación actual del zooplancton con la finalidad de conocer la composición, distribución y abundancia de las comunidades del zooplancton, resaltando las áreas de mayor productividad en el segundo eslabón de la cadena alimentaria. Establecer especies dominantes en la comunidad de quetognatos y su relación con los parámetros físicos en el estuario interior del Golfo de Guayaquil.
Tipo: Journal Contribution
Palavras-chave: Composition; Distribution; Biomass; Zooplankton; Salinity; Abundance; Biological production; Estuaries; Estuarine organisms; Biological production; Estuaries; Distribution; Biomass; Zooplankton; Salinity; Http://aims.fao.org/aos/agrovoc/c_36649; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 2002
URL: http://hdl.handle.net/1834/2271

Analyse des effets de l'ouverture du chenal de Grand Bassam (estuaire du fleuve Comoé, lagune Ebrié) sur la macrofaune benthique lagunaire.
Provedor de dados: 20
Autores: Sankaré, Y.; Etien, N.
Cet article présente les résultats d'une étude comparative de trois séries de prélèvements dans la zone proche du canal de Bassam avant, 6 mois et 20 mois après son ouverture en septembre 1987. Les effets constatés sont la diminution de l'abondance et la modification de la composition de la macrofaune benthique. Ces effets semblent de longue durée, sans reprise en ce qui concerne l'espèce la plus abondante, Corbula trigona. Les changements observés dans la structure des peuplements sont dus essentiellement à l'augmentation de la salinité, et à un degré moindre, aux modifications de la nature du sédiment.
Tipo: Journal Contribution
Palavras-chave: Benthos; Channels; Estuaries.
Ano: 1991
URL: http://hdl.handle.net/1834/5521

Variación y frecuencia de algunas especies de Rotíferos provenientes de la Ciénaga Grande de Santa Marta (Colombia)
Provedor de dados: 20
Autores: Avila Parga, Guerly.
Se describen las variaciones de seis especies de Rotíferos, en un lapso determinado, con respecto a los fuertes cambios de salinidad que presenta la Ciénaga Grande. Cuatro de las especies pertenecen a la familia Brachionidae siendo tres especies del género Brachionus y una del género Platyias; una especie pertenece al género Lecane (familia Lecanidae) y una al género Filinia de la familia Testudinelidae. También se comunica la existencia, para esa región colombiana, de otros géneros de Rotíferos.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Plankton; Microorganisms; Seasonal variations; Coastal lagoons; Estuaries; Zooplankton; Plankton; Estuaries; Microorganisms; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_4807; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1973
URL: http://hdl.handle.net/1834/3316

Lista preliminar de los moluscos de la Ciénaga Grande de Santa Marta (Colombia)
Provedor de dados: 20
Autores: Cosel, R.v.
En este trabajo se mencionan 38 especies de moluscos de la Ciénaga Grande de Santa Marta, que pertenecen a 24 familias y 30 géneros. Entre ellas 32 especies son marinas que toleran agua salobre, 4 especies son eurihalinas y 2 de agua dulce. Se hace constar que de algunas especies se encuentran conchas vacías en un área mayor a la de su actual distribución como especie viva. Se describe el biotopo de la Ciénaga brevemente.
Tipo: Journal Contribution
Palavras-chave: Inventories; Coastal lagoons; Estuaries; Taxonomy; Malacology; Biotopes; Brackishwater molluscs; Marine molluscs; Inventories; Estuaries; Taxonomy; Malacology; Biotopes; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_25283; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_4528; Http://aims.fao.org/aos/agrovoc/c_932; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1973
URL: http://hdl.handle.net/1834/3328

Composición y variación estacional del fitoplancton, zooplancton y microbentos en el estuario interior del Golfo de Guayaquil, durante el año 2003
Provedor de dados: 20
Autores: Gualancañay, E.; Tapia, M.E.; Naranjo, Ch.
El presente trabajo comprende el estudio de la distribution cualitativa y cuantitativa del fitoplancton en el Golfo de Guayaquil, durante dos épocas: Húmeda y seca. El propósito del presente trabajo con respecto al zooplankton está orientado a conocer los cambios en la composición, abundancia y diversidad del zooplancton y en particular el Phyllum Chaetognatha con el objetivo de relacionar la distribución de las especies de Quetognatos con los parámetros físicos. En lo relacionado al estudio del microbentos, se pretende estudiar la composición específica y la abundancia relativa de las especies de la microflora béntica y de la microfauna bentónica y su relación con factores ambientales.
Tipo: Journal Contribution
Palavras-chave: Community composition; Seasonal variations; Phytoplankton; Diatoms; Biomass; Zooplankton; Microorganisms; Benthos; Geographical distribution; Estuaries; Phytoplankton; Biomass; Zooplankton; Benthos; Geographical distribution; Estuaries; Diatoms; Microorganisms; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_32657; Http://aims.fao.org/aos/agrovoc/c_4807.
Ano: 2004
URL: http://hdl.handle.net/1834/2283

Variación estacional del fitoplancton en una estación fija en el estero del Muerto durante 1999-2000-2001
Provedor de dados: 20
Autores: Tapia, M.E.
El objetivo del presente estudio es conocer la variación estacional de las especies del fitoplancton y su relación con las condiciones ambientales durante el período en estudio.
Tipo: Journal Contribution
Palavras-chave: Seasonal variations; Phytoplankton; Chlorophylls; Diatoms; Environmental conditions; Cell counters; Estuaries; Fixed stations; Marshes; Biomass; Phytoplankton; Estuaries; Biomass; Chlorophylls; Diatoms; Environmental conditions; Marshes; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_32657; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_4631.
Ano: 2006
URL: http://hdl.handle.net/1834/2310

Estudio de la comunidad fitoplanctónica en el estuario interior de Esmeraldas, Ecuador durante mayo de 2002
Provedor de dados: 20
Autores: Tapia, M.E.
El presente trabajo tiene por finalidad determinar la composición, abundancia y distribution de las especies que se encuentran en los ríos de la ciudad de Esmeraldas.
Tipo: Journal Contribution
Palavras-chave: Chlorophylls; Phytoplankton; Abundance; Diatoms; Species diversity; Cell counters; Estuaries; Community composition; Distribution; Phytoplankton; Estuaries; Distribution; Chlorophylls; Diatoms; Species diversity; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_32657; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 2003
URL: http://hdl.handle.net/1834/2402

The condition factor of Mugil incilis Hancock (Pisces: Mugilidae) and its seasonal changes in the Cienaga Grande de Santa Marta (Colombia)
Provedor de dados: 20
Autores: Blanco-Racedo, J.A.
Se ha estudiado la variación anual de la condición de la lisa Mugil incilis Hancock en la Ciénaga Grande de Santa Marta (CGSM), la mayor laguna costera del Caribe Colombiano, haciendo énfasis en la influencia ejercida por factores ambientales como la salinidad, la temperatura y la transparencia de las aguas sobre la condición de esta especie de Mugilidae. Las diferencias estacionales observadas en la condición de M. incilis están evidentemente relacionadas con su desarrollo gonadal y dependen de la disponibilidad de alimento. La dieta de M. incilis se basa en detritos y su suministro de alimento parece ser muy afectado por el aporte fluvial a la CGSM, el cual es también responsable de los cambios en la salinidad de la laguna, esto explica la relación...
Tipo: Journal Contribution
Palavras-chave: Fisheries; Coastal lagoons; Estuaries; Fishery biology; Ecology; Fisheries; Estuaries; Ecology; Coastal lagoons; Fishery biology; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_2937.
Ano: 1983
URL: http://hdl.handle.net/1834/3976

Florecimiento de microalgas relacionado con mortandad masiva de peces en el complejo lagunar Ciénaga Grande de Santa Marta, Caribe colombiano
Provedor de dados: 20
Autores: Mancera-P., José E.; Vidal-V., Luis A.
Entre los meses de julio y agosto de 1994 un fenómeno discontinuo de muerte masiva de peces se registró en aguas del complejo lagunar de la Ciénaga Grande de Santa Marta, Colombia. El primer evento se presentó del 15 al 19 de julio, el segundo alrededor del día 20 de agosto y el tercero entre el 26 y 31 del mismo mes. La presencia en altas concentraciones de la cianofita filamentosa Cf. Anabaenopsis sp., registrada en la literatura como altamente tóxica, podría estar relacionada con las causas del primer evento. Un incremento en las concentraciones de fósforo, y un posterior florecimiento de nano y picoplancton, especialmente cianofíceas y algas flageladas, explicaría en parte las condiciones hipóxicas y anóxicas observadas en el tercer evento, las cuales...
Tipo: Journal Contribution
Palavras-chave: Ecology; Phytoplankton; Chemical analysis; Environmental impact; Coastal lagoons; Estuaries; Ecology; Phytoplankton; Environmental impact; Estuaries; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1994
URL: http://hdl.handle.net/1834/3787

Distribution and Depositional History of some Pre-lagoonal Holocene Sediments in the Ciénaga Grande de Santa Marta, Colombia
Provedor de dados: 20
Autores: Cohen, A.D.; Wiedemann, H.U.
An investigation of the pre-lagoonal Holocene sediments beneath the lagoon Cienaga Grande de Santa Marta (Colombia), was undertaken for the purpose of this region before the formation of the lagoon proper. Core and grab samples were collected from the lagoon for stratigraphic observatiion and analysis in the laboratory.  Beneath the recent lagoonal sediments a deposits of peat with intercalated sand and clay was discovered. Its surface lies at a depth of about 2 m below the hydrographic zero level of the lagoon. Three peat samples, obtain from the upper portion of this deposits, were subjected to micropetrographic and pollen analyses. These analyses reveled that, prior to marine inundation, this region in southern Florida (U.S.A.) Sample "f", taken closest...
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Geology; Sediments; Waste disposal; Estuaries; Geology; Waste disposal; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_3232; Http://aims.fao.org/aos/agrovoc/c_8305; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1973
URL: http://hdl.handle.net/1834/3246

Calidad físico química y bacteriológica de las aguas alrededor de la ciudad de Guayaquil 1996 - 1998
Provedor de dados: 20
Autores: Valencia, M.; Palacios, C.; Rodríguez, A.
Siendo Guayaquil una de las ciudades más pobladas del Ecuador y de gran importancia en el desarrollo industrial del país, se determinó la necesidad de llevar a cabo un estudio de la calidad de aguas del río y esteros que bordean la ciudad, debido a que los asentamientos poblacionales e industriales han crecido descargando sus desechos a esos ecosistemas, sumándose a esto el déficit de los sistemas de alcantarillado. Se presenta los resultados de un estudio realizado en el Río Guayas desde el Muelle de la Unidad Nacional hasta la zona de las Esclusas considerando 9 estaciones ubicadas en 3 perfiles perpendiculares a las riberas del río a dos niveles de profundidad, superficie y 10 m., así como de la zona del Estero Salado comprendida entre el área de...
Tipo: Journal Contribution
Palavras-chave: Water quality; River water; Water analysis; Nutrients (mineral); Dissolved oxygen; Petroleum hydrocarbons; Rivers; Marshes; Freshwater pollution; Brackishwater pollution; Estuaries; Water quality; Dissolved oxygen; Rivers; Estuaries; Water analysis; Marshes; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_4631.
Ano: 2000
URL: http://hdl.handle.net/1834/2309

Estado actual del recurso malacológico (Bivalvos y gasterópodos) de la zona infralitoral del Golfo de Guayaquil
Provedor de dados: 20
Autores: Cruz, M.
Del análisis de 144 muestras de sedimento (Tabla 1), obtenidas en seis (6) cruceros realizados en el Estero Salado y los canales de Cascajal, Jambelí y del Morro, así como al Oeste de la Isla Puná en el Golfo de Guayaquil (Fig.1); se identificaron 52 especies de moluscos vivos de los cuales 31 son bivalvos y 21 gasterópodos. Se da a conocer la distribución areal de las especies con sus principales características ecológicas, se relacionan con el tipo de sedimento, profundidad y hábitat para determinar los ecosistemas marinos, estuarinos y barreras ecológicas. Se encontró que las especies que podrían considerarse como posibles recursos de importancia económica y alimenticia en la Zona infralitoral estudiada son: Mytella strigata, Mytella guyanensis,...
Tipo: Journal Contribution
Palavras-chave: Malacology; Marine molluscs; Check lists; Cruises; Distribution; Species diversity; Estuaries; Malacology; Distribution; Estuaries; Species diversity; Http://aims.fao.org/aos/agrovoc/c_4528; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 1992
URL: http://hdl.handle.net/1834/2182

Alteraciones físico-químicas de la columna de agua, generadas por el uso del Boliche (Método de Pesca Artesanal) en la Ciénaga Grande de Santa Marta, Caribe colombiano
Provedor de dados: 20
Autores: Rueda, Mario E.; Mancera-Pineda, José E.
Con el propósito de evaluar los impactos generados por el uso de un método de pesca artesanal denominado "boliche" en la laguna costera tropical Ciénaga Grande de Santa Marta, se cuantificaron diferentes aspectos; uno de los cuales fue orientado a analizar algunas alteraciones físico-químicas de la columna de agua, producidas durante la maniobra de pesca. Se determinó la concentración de oxígeno disuelto, la transparencia del agua y la concentración y composición del seston, antes y después de 70 lances de boliche. Los resultados indican que la maniobra de pesca genera algunos cambios momentáneos de poca repercusión en el ecosistema, tales como resuspensión de partículas principalmente inorgánicas, aumento de la concentración de seston y en consecuencia...
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Chemical analysis; Environmental impact; Ecology; Estuarine fisheries; Dissolved oxygen; Seston; Fishing gear; Ecology; Estuaries; Environmental impact; Estuarine fisheries; Dissolved oxygen; Coastal lagoons; Seston; Fishing gear; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_2674; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_6998; Http://aims.fao.org/aos/agrovoc/c_2946.
Ano: 1995
URL: http://hdl.handle.net/1834/3774

Major Fishes of West African Coastal Waters and Their Morphological Characterization, with Emphasis on Sarotherodon melanotheron  Teleostei, Cichlidae)
Provedor de dados: 20
Autores: Falk, T.M.; Teugels, G.G.
The West African coastal zone is rich in estuaries and lagoons. Estuaries are abundant in the area from the mouth of Senegal to Guinea (e.g., Sine Saloum, Casamance); lagoons are generally present from Cote d'Ivoire to the Niger Delta in Nigeria (e.g., Ebrie Lagoon, Porto Novo Lagoon, Lagos Lagoon). Because of their important diversity, it is difficult to give their physical and biological definitions. They are all, however, characterized by a typical and rich fish species composition
Tipo: Proceedings Paper
Palavras-chave: Fish species; Coastal zone; Lagoons; Estuaries.
Ano: 2000
URL: http://hdl.handle.net/1834/737

Biodiversité et stratégies de pêche, exemple des pêcheries du Sénégal
Provedor de dados: 20
Autores: Tidiane, Bousso.
Les implications de la biodiversité sur les pratiques de pêche dans les milieux continentaux en général etestuariens en particulier, sont relativement peu étudiées au Sénégal. les connaissances accumulées sur la bio-écologie des espèces et les modes d’exploitation utilisés par les pêcheurs artisans permettent cependant d’en tirer les grands traits.  Les estuaires du fleuve Sénégal, du Sine Saloum Et de la Casamance ont des systèmes d’alimentation en eau différents. Les variations du régime pluviométrique et l’évolution de la pluviométrie ces trois dernières décennies (succession d’an.nées humides et d’années particulièrement sèches) ont influencé fortement les caractéristiques physico-chimiques de ces cours d’eau. Les espèces de poissons ont développé des...
Tipo: Book
Palavras-chave: Fisheries hydrography; Biodiversity; Estuaries; Inland fisheries; Lake fisheries; Fishing gear; Backwaters; Fish.
Ano: 2000
URL: http://hdl.handle.net/1834/4583

Gobioides broussoneti Lacepede (Pisces: Gobiidae) en el Caribe colombiano
Provedor de dados: 20
Autores: Acero-P., A.; Arenas-Granados, P.
Se registra la presencia del pe? Gobiidae Gobioides broussoneti en el área adyacente a la boca de la Ciénaga Grande de Santa Marta (Caribe colombiano). Se colectaron 29 especímenes, 28 de ellos Juveniles (48-51 mm) y el otro un macho maduro (553 mm); el contenido del tubo digestivo del adulto indica que la especie consume básicamente material detrítico vegetal, complementado con pequeños invertebrados.
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Stomach content; Estuaries; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1990
URL: http://hdl.handle.net/1834/3891

Variabilidad estacional del fitoplancton y su relación con los parámetros ambientales en el estuario interior de Esmeraldas durante los años 2004-2005
Provedor de dados: 20
Autores: Tapia, M.E.
Se colectaron y analizaron un total de 96 estaciones distribuidas en cinco áreas de la Provincia de Esmeraldas durante los años 2004-2005. Se elaboraron gráficos de las especies (muestras de red de 50 µ) y la relación con los parámetros físicos y químicos. En la comunidad del fitoplancton presentó una variabilidad en la composición de especies, especialmente en el Terminal Petrolero durante septiembre del 2004 y disminuye en abril del 2005, la mayor densidad poblacional fue para el grupo de diatomeas. Las principales especies en el ambiente marino estuarino Climacosphenia monoligera, Pseudo-nitzschia paradoxa, Thalassiotrix frauenfeldii, Terpsinoe musica, Coscinodiscus excentricus. Las especies representativas en el ambiente marino Navicula tuscula,...
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Diatoms; Pollution; Estuaries; Station lists; Distribution.
Ano: 2012
URL: http://hdl.handle.net/1834/4653

Una herramienta para el análisis de variables oceanográficas en estuarios
Provedor de dados: 20
Autores: Tutivén, I.
Con la ayuda del programa DINEST, se han calculado los transportes de sal en el estuario del Golfo de Guayaquil. Los resultados muestran que, el programa propuesto, es una herramienta muy útil como primera aproximación en el análisis de las condiciones de un estuario. Es así que se ha encontrado una bien definida influencia tanto de la marea como de la descarga del río. Se ha podido observar como estas cambian estacionalmente. la zona del río se extiende hasta las estación 7 (2°25'S) en la época húmeda, pero esto ocurre en el borde este del estuario solamente. La zona de mezcla avanza aguas arriba más allá de los 2°10'S en la época seca. Los resultados arrojan que existe una mayor dinámica de los transporte, en las estaciones 16 y 10 en la época seca y...
Tipo: Journal Contribution
Palavras-chave: Estuarine dynamics; Salt advection; Estuaries; Estuaries; Http://aims.fao.org/aos/agrovoc/c_2673.
Ano: 2000
URL: http://hdl.handle.net/1834/2232

Estudios de la circulación forzada por el viento en el estuario del Río de la Plata y sus implicancias en la estratificación: resultados del análisis de datos y simulaciones numéricas
Provedor de dados: 20
Autores: Meccia, V.L.
For the first time, the analysis of historical salinity data and new current series is combined with high resolution numerical simulations, with the aim of understanding the processes that occur in the active and important Río de la Plata estuary (South America). With that objective, the first relatively long ADCP current series collected in two points of the estuary are analyzed. Only 25% of the currents variance is accounted by the tide. Approximately another 25% is associated with internal wave activity at the sampling locations, where a strong stratification exists. These waves are forced by land-sea breeze and tide and are very frequent during spring and summer. The remaining 50% of the energy is wind driven and occurs in synoptic to intra-seasonal...
Tipo: Theses and Dissertations
Palavras-chave: Estuaries; Estuarine dynamics; Circulation; Winds; Salt wedges; Hydrodynamics; Estuaries; Winds; Hydrodynamics; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_8401; Http://aims.fao.org/aos/agrovoc/c_3723.
Ano: 2008
URL: http://hdl.handle.net/1834/2830

Contribuciones científicas del Instituto de Investigaciones Marinas de Punta de Betín "INVEMAR", publicadas entre 1966 y 1982
Provedor de dados: 20
Autores: Alvarez-León, R.; Salzwedel, H.
Se incluyen en el análisis 271 trabajos publicados en diversas revistas científicas y cuyo material básico de estudio fue observado, colectado y analizado en el Caribe colombiano, pero fundamentalmente en el área de influencia directa del INVEMAR. Las contribuciones han sido publicadas en alemán (111), español (109) e inglés (51). Dichos trabajos incluyen investigaciones de carácter descriptivo (175) y analítico (96) e involucran el ambiente terrestre (91) y el acuático (180). Las regiones incluidas en loa estudios son: Parque Tayrona (84), Santa Marta (59), Ciénaga Grande (51) y otras áreas (77); y en cuanto a las ramas de la ciencias: la Biología (212), la Geología (9) y otras áreas (50).
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Biology; Geology; Estuaries; Geology; Coastal lagoons; Biology; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_3232; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_925.
Ano: 1983
URL: http://hdl.handle.net/1834/3978

Análisis de clasificación de series temporales: el caso de la salinidad en la Ciénaga Grande de Santa Marta
Provedor de dados: 20
Autores: Giraldo-H., R.; Martínez-C., J.; Hurtado-T., L.H.; Zea, S.; Madera-R., E.R.
Se realizó una clasificación numérica de 21 estaciones de monitoreo del sistema laguno -estuarino comprendido por la Ciénaga Grande de Santa Marta y el Complejo Pajarales, de acuerdo a su similaridad en el comportamiento de la salinidad del agua. Se utilizó información quincenal comprendida entre enero de 1987 y octubre de 1991. Debido a la estructura de autocorrelación de los datos fue necesario emplear los modelos ARIMA de series de tiempo en primer lugar, y posteriormente aplicar una técnica de clasificación normal con los coeficientes de la representación infinita AR calculados para cada estación. Los resultados del análisis fueron coherentes con las hipótesis planteadas acerca de la distribución de la variable en el sistema.
Tipo: Journal Contribution
Palavras-chave: Ecology; Salinity effects; Autocorrelation; Monitoring; Coastal lagoons; Estuaries; Statistical analysis; Ecology; Monitoring; Estuaries; Statistical analysis; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_4911; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_7378; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1995
URL: http://hdl.handle.net/1834/3813

Contribuciones a la mineralización de materiales orgánicos en la Isla de Salamanca
Provedor de dados: 20
Autores: Steubing, L.
Los procesos de mineralización del carbono y del nitrógeno fueron estudiados en un terraplén costero, en una hondonada y en un terraplén interno de la Isla de Salamanca en el Mar Caribe. El pH, y el contenido de cloruros y carbono, lo mismo que la capacidad hídrica fueron los más altos en el suelo húmedo de la hondonada; seguido del terraplén interno; el terraplén costero tuvo la capacidad hídrica más deficiente, y el más bajo contenido en cloruros y en nitrógeno. En la hondonada se encontró el más alto contenido en bacterias; las mayores poblaciones de hongos se encontraron en el terraplén interno. La actividad del suelo (producción de CO2 y amonificación) dependió del contenido de nitrógeno y cloruros de los lugares investigados.
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Geology; Soils; Bacteria; Estuaries; Geology; Coastal lagoons; Bacteria; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_3232; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_765.
Ano: 1971
URL: http://hdl.handle.net/1834/3248

La salinidad y la distribución espacial de la ictiofauna en el estuario del Río de la Plata
Provedor de dados: 20
Autores: Rico, M.R.
Los ecosistemas estuariales se caracterizan por su alta productividad, baja diversidad biológica y fluctuaciones impredecibles de salinidad. A su vez, la distribución espacial de su ictiofauna resulta en general suficientemente explicada por los patrones de distribución de la salinidad. En particular, en el estuario del Río de la Plata (35° 00' S y 55° 30' W) que presenta una marcada estratificación vertical de densidad, dominada por la salinidad, se analizó cuantitativamente la relación entre dicha variable y la distribución espacial de su ictiofauna demersal. Se procesó y analizó información proveniente de siete campañas de evaluación pesquera realizadas por el Proyecto "Especies Demersales Costeras" del INIDEP en el área de estudio, durante las...
Tipo: Theses and Dissertations
Palavras-chave: Brackishwater fish; Salinity charts; Salinity effects; Salinity tolerance; Community composition; Species diversity; Brackishwater environment; Estuaries; Estuaries; Species diversity; Brackishwater environment; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_33954; Http://aims.fao.org/aos/agrovoc/c_1050.
Ano: 2000
URL: http://hdl.handle.net/1834/2603

Estudio de los poliquetos bentónicos en el Golfo de Guayaquil, exterior (Canal del Morro y Jambelí)
Provedor de dados: 20
Autores: Villamar, F.
Se estudiaron 47 muestras bentónicas, en junio de 1986 y febrero de 1987. Utilizando la embarcación LAE "RIGEL" del Instituto Oceanográfico de la Armada del Ecuador. Trece especies de poliquetos bentónicos son identificados en la zona estudiada. Diopatra splendidisima y paraonides platibranchia fueron las más abundantes en el área del canal del Morro y Sternaspis fosser para el canal de Jambelí. Durante el período de muestreo, febrero de 1987, la temperatura del agua osciló entre 27 y 32°C. Los sedimentos de tipo arena limosa y limo fueron los más frecuentes en el área del canal de Jambelí con profundidades medias entre 11 y 50 metros, mientras que la textura arena y limo arenoso son para el canal del Morro, con profundidades medias entre 6 y 34 metros. Se...
Tipo: Journal Contribution
Palavras-chave: Zoobenthos; Geographical distribution; Estuaries; Geographical distribution; Estuaries; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 1989
URL: http://hdl.handle.net/1834/2150

Early postlarval fish in the hyperbenthos of the Dutch Delta (south-west Netherlands)
Provedor de dados: 27
Autores: Beyst, B.; Mees, J.; Cattrijsse, A.
Early (post)larval fish constitute a significant part of the temporary hyperbenthos, i.e. of the fauna living in the lower reaches of the water column close to the substratum. Information on the densities and spatial and temporal variations of these stages, as well as on their lengths at the moment of occurrence, can be an important contribution to the knowledge of their dispersion, migrations and to the identification of possible bottlenecks in their recruitment. Therefore the hyperbenthos of the Voordelta, a shallow coastal zone in front of the Dutch Delta, as well as that of the subtidal channels and the intertidal brackish marsh creeks of the Westerschelde Estuary, was sampled monthly during one year by means of a sledge and a stow net. A total of 37...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community composition; Deltas; Dominant species; Ecological distribution; Estuaries; Intertidal environment; Juveniles; Marine fish; Nursery grounds; Pleuronectes; Population density; Salt marshes; Sprattus sprattus; Wetlands; Zoobenthos; Clupea harengus; Dicentrarchus labrax [Bass]; Solea solea [Sole].
Ano: 1999
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3979

Steltloper populaties en macrozoobenthos in een veranderend estuarium: de Oosterschelde (Nl.) = Wader populations and macrozoobenthos in a changing estuary: the Oosterschelde (The Netherlands)
Provedor de dados: 27
Autores: Meire, P.
Habitat verlies en degradatie is één van de belangrijke ecologische problemen van deze eeuw. Hoewel alle ecosystemen hieronder te lijden hebben, blijken wetlands of waterrijke gebieden, op wereldschaal vrij zeldzame gebieden, onder zeer zware antropogene druk te staan. Het is daarom ook niet te verwonderen dat deze ecosystemen sinds meerdere jaren een belangrijke prioriteit vormen voor het natuurbehoud. Binnen de wetlands vormen estuaria zeer produktieve systemen waarvan het rijke voedselaanbod wordt benut door grote aantallen steltlopers, die buiten het broedseizoen bijna volledig op dergelijke getijdengebieden zijn aangewezen. Het belang van het Deltagebied (NI.) en met name de getijdengebieden van Ooster- en Westerschelde voor watervogels worden kort...
Tipo: Info:eu-repo/semantics/doctoralThesis
Palavras-chave: Benthos; Birds; Estuaries; River; Water.
Ano: 1993
URL: http://www.vliz.be/imisdocs/publications/5961.pdf

Het Schelde-estuarium als filter: een bioreactor van stofstromen
Provedor de dados: 27
Autores: Van Damme, S.; Meire, P.
The Scheldt estuary is exposed to large loads of carbon and nutrients. This leads to a eutrophication problem characterized by reduced oxygen concentrations and a huge efflux of CO&lt;sub&gt;2&lt;/sub&gt;. In the coastal waters a degradation of the foodchain is noted caused by excessive nutrient supply. The capacity of the estuary to polish the water is important but can not cope with the vast scale of the immissions. Restoration and development of tidal wetlands can contribute in several ways to restore the water quality. Increase of water treatment is expected to have positive ecological results. Nevertheless, restoration of the oxygen conditions might counteract some purifying processes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Degradation; Estuaries; Eutrophication; Food chains; Nutrients (mineral); Water quality.
Ano: 2001
URL: http://www.vliz.be/imisdocs/publications/280697.pdf

Great unexpected differences between two populations of the intertidal crab Neohelice granulata inhabiting close but contrasting habitats (Crustacea: Decapoda: Brachyura)
Provedor de dados: 103
Autores: Spivak,Eduardo D.; Bas,Claudia C.; Luppi,Tomás A.
ABSTRACT Two populations of the Southwestern Atlantic burrowing crab, Neohelice granulata (Dana, 1851), are separated by only 190 km. They inhabit bays that drain into a Patagonian gulf in the southernmost limit of the geographical distribution of the species: San Antonio Bay (SAO) and San José Gulf (RSJ). The population from SAO has been extensively studied, whereas that of RSJ has not. The main goal of this study is to compare the ecological and habitat characteristics of the two populations, based on samples collected on successive days during the middle of the reproductive season of the crab. The substrate of SAO is composed of a high proportion of gravel and scarce organic matter, whereas the substrate of RSJ presents twice as much silt and clay, and...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Argentine; Estuaries; Crab; Fecundity; Feeding; Growth; Maturity; Sediment.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000604001

Nota complementar sobre a composição ictiofaunística da Baía de Guaratuba, Paraná, Brasil
Provedor de dados: 104
Autores: Chaves,Paulo T. C.; Vendel,Ana Lúcia.
The utilisation of multiple gears and the surveying of other areas than that of mangrove habitats have increased in 27 the number of fish species known in the Guaratuba Bay, an estuarine ecosystem located in the southern of Brazilian coastal region (25º52'S, 48º39'W). The new occurrence of a typically freshwater species (Pimelodidae) and of several Clupeiformes and Gobiidae species, reveals the importance of the salt marsh and the innermost zones of this Bay to the distribution of certain fish groups.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Estuaries; Guaratuba Bay.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500032

Observações sobre o ciclo de vida da corvina, Micropogonias furnieri (Desmarest) (Teleostei, Sciaenidae), no litoral do Estado do Paraná, Brasil
Provedor de dados: 104
Autores: Robert,Maurício de Castro; Chaves,Paulo de Tarso C.
A survey performed in the Guaratuba Bay (25º52'S; 48º39'W) and the adjacent marine area has provided additional data about the habits of the croaker in the southern coast of Brazil. A dynamic pattern of movements along the marine and estuarine waters was observed, but it does not indicate spawning activity in the study area. During autumn/winter, pre-adults and adults use the marine waters. In spring/summer, following gonadal maturation,the individuals leave this area and probably move to deeper waters, where they spawn. Until the end of summer, the estuary is then occupied by juveniles coming from the marine spawning area. In autumn/winter, these juveniles and the new pre-adults move to the marine zone adjacent to the bay and begin gonadal maturation. It...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sciaenidae; Micropogonias furnieri; Occupation; Estuaries; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200013

Size distribution of the jack Chloroscombrus chrysurus (Linnaeus) (Actinopterygii, Carangidae) in a tropical bay at Southeastern Brazil
Provedor de dados: 104
Autores: Costa,Marcus R. da; Albieri,Rafael J.; Araújo,Francisco G.
Chloroscombrus chrysurus (Linnaeus, 1766) is the most abundant representant of the Carangidae family in the Sepetiba bay, a c.a. 450 km² semi-closed coastal area in the Southeastern Brazil. We analyze fish (number, weight and size) and environmental data to assess the part of life history of this species in tropical embayment environments. Fish sampling were taken in triplicates by monthly bottom trawls, in three bay zones (inner, middle and outer), defined according to a spatial gradient of depth and salinity. Juveniles were firstly caught in the inner bay zone measuring 30-90 mm total length - TL (mode = 60 mm TL) in Spring. Then they move toward the middle and outermost part of the bay in Summer-Autumn (120-180 mm TL), following a seaward migration to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal fishes; Estuaries; Growth; Tropics.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300009

Nota complementar sobre os hábitos de Gerres melanopterus (Teleostei, Gerreidae) na Baía de Guaratuba, Paraná, Brasil (25º52'S, 48º39'W)
Provedor de dados: 104
Autores: Chaves,Paulo de Tarso C.; Robert,Maurício de Castro.
A survey performed in the Guaratuba Bay supports the hypothesis that the G. melanopterus individuals migrate to reproduce at the sea during summer. In autumn and winter, the adults return to the Bay, a pattern not yet described in the literature for this species. G. melanopterus explores the most internal areas of the Bay when the continental influence is lower. Differences in feeding habits were registered between individuals occupying the investigated area and those from a nearby mangrove previously studied.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gerreidae; Gerres; Migration; Mangrove; Estuaries; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100028

Composição da assembléia de peixes da Baía da Ribeira, Angra dos Reis, Rio de Janeiro, Brasil
Provedor de dados: 104
Autores: Andreata,José V.; Meurer,Bruno C.; Baptista,Maurício G.S.; Manzano,Felipe V.; Teixeira,Dirceu E.; Longo,Michele M.; Freret,Natalie V.
The ichthyofauna composition of the Baía da Ribeira was analyzed between December 1998 and November2001. The instruments used were an otter-trawl net, beach seines, cast net and visual census. It was registered two classes, composed by 16 orders, 59 families and 148 species. The high wealth of the region is due to the great diversity of environments and its location at the north limit of Argentine an Zoogeographic Province. The instruments diversification, the samples regions and the long sampling period were the responsables to the great numbers of collected species in comparison to some others studies at the same area.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Specieslist; Bay; Estuaries.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400019

POLYCHAETES FROM RED MANGROVE (Rhizophora mangle) AND THEIR RELATIONSHIP WITH THE WATER CONDITIONS IN THE GULF OF URABÁ, COLOMBIAN CARIBBEAN
Provedor de dados: 37
Autores: FERNÁNDEZ-RODRÍGUEZ,Vanessa; LONDOÑO-MESA,Mario H.; RAMÍREZ-RESTREPO,John Jairo.
Polychaetes play a significant role in benthic communities' ecology; they dominate the infauna, recycle nutrients from the water column and are commonly used as biological indicators. Along the Gulf of Urabá (Colombian Caribbean), particularly for the zones of the Marirrío Bay and the Rionegro Cove, there are no reports about ecological aspects of polychaete species; only a few taxonomic studies have been conducted. In this research we evaluate the relationship between polychaete species associated with red mangrove roots, Rhizophora mangle, and some physicochemical variables of the water column; also, we made some notes about the spatial distributions of polychaetes species within the two study areas. We found that the environmental variables that best...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capitella cf; Capitata; Estuaries; Exotic species; Ficopomatus uschakovi; Polychaetes ecology; Capitella cf; Capitata; Ecología de poliquetos; Estuarios; Especies exóticas; Ficopomatus uschakovi.
Ano: 2016
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2016000300015

STRUCTURE OF A POLYCHAETE COMMUNITY IN A MANGROVE IN THE NORTHERN COAST OF BRAZIL
Provedor de dados: 37
Autores: TAVARES CUTRIM,Allana Stéphanie; SANTOS SOUSA,Lorena Karine; PASSOS RIBEIRO,Rannyele; DE OLIVEIRA,Verônica Maria; SILVA DE ALMEIDA,Zafira da.
ABSTRACT Polychaetes play an important role in the structure and functioning of benthic communities in mangroves; however, knowledge about these organisms in the Maranhão Amazon coast is scarcity. This study analyzed the ecological aspects of polychaete community in the Quebra Pote mangrove in Maranhão State. Four sampling campaigns were carried out during both rainy and dry periods between November 2013 and July 2014, using 100 meters long transects set perpendicular to the waterline at three zones 50 m between them. A total of 521 organisms were identified belonging to ten families and 15 species; Nephtys simoni, Notomastus sp., and Paraonis sp. represented 58.92 % of all samples. Mobile deposit-feeders polychaetes were dominant and abundant. The Quebra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annelids; Diversity; Estuaries; Soft bottoms; Variation.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000300286

Host-exclusivity and host-recurrence by wood decay fungi (Basidiomycota - Agaricomycetes) in Brazilian mangroves
Provedor de dados: 39
Autores: Nogueira-Melo,Georgea S.; Santos,Paulo J. P.; Gibertoni,Tatiana B.
ABSTRACT This study aimed to investigate for the first time the ecological interactions between species of Agaricomycetes and their host plants in Brazilian mangroves. Thirty-two field trips were undertaken to four mangroves in the state of Pernambuco, Brazil, from April 2009 to March 2010. One 250 x 40 m stand was delimited in each mangrove and six categories of substrates were artificially established: living Avicennia schaueriana (LA), dead A. schaueriana (DA), living Rhizophora mangle (LR), dead R. mangle (DR), living Laguncularia racemosa (LL) and dead L. racemosa (DL). Thirty-three species of Agaricomycetes were collected, 13 of which had more than five reports and so were used in statistical analyses. Twelve species showed significant values for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Estuaries; Host-fungi interaction; Host-relationships; Plant-fungi interaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400566

Pathogenic Vibrio species isolated from estuarine environments (Ceará, Brazil) - antimicrobial resistance and virulence potential profiles
Provedor de dados: 42
Autores: MENEZES,FRANCISCA G.R. DE; RODRIGUEZ,MARINA T.T.; CARVALHO,FÁTIMA C.T. DE; REBOUÇAS,ROSA H.; COSTA,RENATA A.; SOUSA,OSCARINA V. DE; HOFER,ERNESTO; VIEIRA,REGINE H.S.F.
ABSTRACT Detection of virulent strains associated with aquatic environment is a current concern for the management and control of human and animal health. Thus, Vibrio diversity was investigated in four estuaries from state of Ceará (Pacoti, Choró, Pirangi and Jaguaribe) followed by antimicrobial susceptibility to different antimicrobials used in aquaculture and detection of main virulence factors to human health. Isolation and identification were performed on TCBS agar (selective medium) and dichotomous key based on biochemical characteristics, respectively. Nineteen strains of genus Vibrio were catalogued. Vibrio parahaemolyticus (Choró River) and V. alginolyticus (Pacoti River) were the most abundant species in the four estuaries. All strains were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vibrio spp.; Pathogen; Estuaries; Public health; Water.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301175

Composition of functional ecological guilds of the fish fauna of the internal sector of the Amazon Estuary, Pará, Brazil
Provedor de dados: 42
Autores: MOURÃO,KEILA R.M.; FERREIRA,VALDIMERE; LUCENA-FRÉDOU,FLÁVIA.
The present study describes the spatial and temporal structure of the estuarine fish community in the internal sector of the Amazon Estuary. Samples were obtained in the main channels and tidal creeks of Guajará and Marajó Bays and Guamá River. A total of 41,516 fish specimens were collected, representing 136 taxa, 38 families and 12 orders. In the dry season, the mean salinity of the main channel increased along a limnic-marine gradient, between the Guamá River and the Marajó Bay. Species richness was lowest in the mouth of the Guamá River and in the right margin of the Guajará Bay. Fish species composition and environmental guilds differed markedly among areas: Migrants and Freshwater Stragglers were dominant in the Guamá River and the Guajará Bay, while...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estuaries; Fish diversity; Functional ecology; Habitat; Salinity gradients.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401783

Trophic habits of the flounder Citharichthys gilberti (Paralichthyidae) and its spatiotemporal variability in Buenaventura Bay, Colombian Pacific
Provedor de dados: 50
Autores: García-Cardona,Evelin; Molina,Andrés; Duque,Guillermo.
ABSTRACT Fishes belonging to the order Pleuronectiformes, are flattened and inhabit estuarine bottoms. They are important because they provide an energy exchange between the demersal habitat and the water column, reflecting the effects of environmental variations in the ecosystem and the dynamics of trophic relation between species. This research evaluates the influence that some space-time variations have on the diet of Citharichthys gilberti in Buenaventura Bay. 92 stomachs corresponding to sites with different environmental characteristics within the Bay were examined. Feeding indices were determined to make a trophic characterization and evaluate the interactions between trophic habits and environmental variables. The prey with the highest relative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flatfishes; Estuaries; Foodhabits; Environmental factors.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000200133

Spatial distribution and increase of microplastics over time in sediments of Buenaventura Bay, Colombian Pacific
Provedor de dados: 50
Autores: Vásquez-Molano,Daniela; Molina,Andres; Duque,Guillermo.
ABSTRACT The increase in production, consumption and inadequate disposition of plastics has generated an accumulation of these elements in marine ecosystems, which have become important microplastics sinks (&lt; 5 mm). The objective of this research was to determine the temporal and spatial differences in the density, distribution, and type of microplastics in the sediments of Buenaventura Bay. For this purpose, sediment samples were collected in the internal estuary (close to the rivers) and in the external estuary (with a greater marine influence). Samples were obtained in the dry, transition, and rainy season for the years 2015 and 2019. Microplastics were extracted by density separation method, each particle was classified and measured by optical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microplastics; Sediment contamination; Marine contamination; Estuaries; Environmental impact.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000100027

The mangrove as a temporary habitat for fish: the Eucinostomus Species at Guaratuba Bay, Brazil (25º 52'S;48º 39'W)
Provedor de dados: 52
Autores: Chaves,Paulo de Tarso C.; Otto,Gislaine.
Several coastal fish use the estuarine habitat during a part of their life cycle. These sites are considered good for the reproductive activity, as well as for the growth of larvae and juveniles. Concerning the Gerreidae, however, many studies reveal that most species leave the estuaries to reproduce at sea. At Guaratuba Bay, southern Brazil, this family is represented by three genera and five species, which make an important fraction of the local assemblage. The present study investigated the populational structure and breeding habits of three Eucinostomus species, in order to know what relationship exists between them and the mangrove. It was found that the Guaratuba mangrove represents a transitory habitat for the life cycle of the Eucinostomus species....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Gerreidae; Estuaries; Mangrove.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100009