Consulta: subjectFacets:"Coastal waters"
Registros recuperados: 53
Data/hora: 15/06/2024 08:59:16

Cu, Pb AND Zn DISTRIBUTION IN NEARSHORE WATERS IN SAN JORGE BAY, NORTHERN CHILE
Provedor de dados: 72
Autores: Salamanca,Marco A.; Camaño,Andrés; Jara,Bibiana; Rodríguez,Tatiana.
An extensive spatial survey metal content to study the spatial distribution of Cu, Pb and Zn concentration in nearshore waters of San Jorge Bay, along the coast of Antofagasta City, Chile was carried out located near the Atacama desert, which represent the largest populated urban settlement in northern Chile (~ 260,000 inhabitants). The coastal zone of this area is under an intensive use as discharge location of pollutants of different sources. Dissolved Cu varies between 0.97 to 1.65 mug l-1, in the southern part of the study area and in front of an industrial discharge, respectively. The dissolved Pb shows a narrow concentration range (0.019 to 0.029 mug l-1) and Zn content varies between 1.7 mug l-1 in the northern part of the study area to 2.0 mug l-1,...
Tipo: Journal article
Palavras-chave: Trace metal distribution; Coastal waters; Desert areas.
Ano: 2000
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382000000200009

When riverine dissolved organic matter (DOM) meets labile DOM in coastal waters: changes in bacterial community activity and composition
Provedor de dados: 5
Autores: Blanchet, Marine; Pringault, Olivier; Panagiotopoulos, Christos; Lefevre, Dominique; Charriere, Bruno; Ghiglione, Jean-francois; Fernandez, Camila; Aparicio, Fran L.; Marrase, Celia; Catala, Philippe; Oriol, Louise; Caparros, Jocelyne; Joux, Fabien.
Heterotrophic bacterial communities in marine environments are exposed to a heterogeneous mixture of dissolved organic compounds with different bioreactivity that may control both their activity and composition. The coastal environment is an example of a mixing area where recalcitrant allochthonous organic matter from rivers can encounter labile organic matter from marine phytoplanktonic blooms. The objective of this study was to explore the effects of mixed qualities of dissolved organic matter (DOM) on bacterial community activity (BCA) and bacterial community composition (BCC) and to test for a priming effect when DOM sources are added in combination. Coastal marine bacterial communities were incubated separately with a mixture of amino acids and with...
Tipo: Text
Palavras-chave: Dissolved organic matter; Biodegradation; Coastal waters; Bacterial community composition; Priming effect.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00625/73737/74701.pdf

Which ocean colour algorithm for MERIS in North West European waters?
Provedor de dados: 5
Autores: Tilstone, Gavin; Mallor-hoya, Silvana; Gohin, Francis; Couto, Andre Belo; Sa, Carolina; Goela, Priscila; Cristina, Sonia; Airs, Ruth; Icely, John; Zuehlke, Marco; Groom, Steve.
Chlorophyll-a (Chl a) is a key parameter for the assessment of water quality in coastal and shelf environments. The availability of satellite ocean colour offers the potential of monitoring these regions at unprecedented spatial and temporal scales, as long as a high level of accuracy can be achieved. To use satellite derived Chl a to monitor these environments, it is imperative that rigorous accuracy assessments are undertaken to select the most accurate ocean colour algorithm(s).  To this end, the accuracy of a range of ocean colour Chl a algorithms for use with Medium Imaging Resolution Spectrometer (MERIS) Level 2 (L2) Remote Sensing Reflectance (Rrs), using two different atmospheric correction (AC) processors (COASTCOLOUR and MERIS Ground Segment...
Tipo: Text
Palavras-chave: Case 2 waters; Coastal waters; Shelf waters; Chlorophyll-a; North Sea; Ocean colour; Remote sensing; MERIS; English Channel; Mediterranean coast; Portuguese coast.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00359/46995/48634.pdf

Étude par télédétection de la dispersion en mer des eaux estuariennes issues de la Gironde et du Pertuis de Maumusson
Provedor de dados: 5
Autores: Castaing, P; Allen, Gp; Houdart, Michel; Moign, Y.
The objective of this study, carried out in the Gironde estuary inlet, was to determine the nature of the seaward dispersion of estuarine water and suspended sediments during a spring tide and high river flow. On June 3, 19(7, three flights were made over the inlet, at mid ebb, low tide and mid flood. The planned flight at high tide was cancelled due to adverse meteorological conditions. During each flight, thermal infrared coverage was obtained, together with black and white photographs. These data were correlated with concomitant ground mesures of current velocity, salinity, temperature and suspended sediment concentration Four types of water masses were identified during the tidal cycle: estuarine "very warm and turbid" water; estuarine "cooler and...
Tipo: Text
Palavras-chave: Hydrodynamique; Suspensions; Télédétection; Eaux côtières; Estuaire; Gironde; Hydrodynamic; Suspended sediments; Remote sensing; Coastal waters; Estuary; Gironde.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00122/23361/21188.pdf

Mise en evidence et evaluation de l'enrichissement bacterien du film de surface des eaux littorales d'effluents urbains
Provedor de dados: 5
Autores: Beucher, M; Plusquellec, A; Legal, Y; Cleret, J.
Sea water samples were collected in the vicinity of urban non-treated, urban treated and industrial outfalls. The samples belonged to two differents types: the first one consisted of the surface film, the second was the corresponding water at 50 cm depth. The enumeration of the bacteria in both types of samples indicated a significant concentration of the mesophilic flora and of the indicators of fecal pollution in the surface film. The value of the concentrating factor depended largely on the nature of the sewage and did not reflect differences between the various bacterial groups. At one of the stations a very significant regression was demonstrated between surface sample and depth sample.
Tipo: Text
Palavras-chave: Bacteria; Bacteriology; Bacterial counters; Industrial wastes; Pollution indicators; Coastal waters; Microbial contamination; Indicator species; Sewage; Outfalls; Surface films.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1006.pdf

Determination du profil des flores bacteriennes des zones littorales. Application a l'evaluation de l'impact des rejets
Provedor de dados: 5
Autores: Bunetel, L; Segui, A; Guerin, J; Lerman, I; Cormier, M.
The principle of this method is to evaluate, by counts exercised upon selective media, the relative importance of the different bacteria families in the flora of the coastal waters. It is important to separate the contaminant species and the commensal species in the marine environment. Ten culture media distributed into four categories (selective, non selective, saline and non saline) were examined by numeration. Counts were transferred on a diagram allowing to plot down a profile of bacterial flora of water sampled from a given geographical area. The profiles are arranged by a classification method. The sampling points with similar or adjoining profiles were assembled and marked on the chart. In this way, the authors obtained areas representing the impact...
Tipo: Text
Palavras-chave: Bacteria; Coastal waters; Microbiological culture; Sewage disposal; Microbial contamination; Bacterial counters; Bacteria collecting devices.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1004.pdf

Aspects temporels de l' impact de rejets radioactifs effectues en mer, sur les eaux d' une station littorale de la Manche
Provedor de dados: 5
Autores: Fraizier, Albert; Guegueniat, Pierre; Salomon, Jean-claude.
Time-dependent impact of seaward radioactive discharges on waters of one coastal station of the English Channel.  The disposai at sea of liquid waste from the nuclear fuel reprocessing plant at La Hague (CEA/Cogema) causes modifications to the radioactivity of marine waters in both space and time. Fluctuations in this radioactivity are controlled by many different parameters; to study these parameters, samples were taken, in particular, from a coastal site situated 5 km from the outlet pipe.  The overall impact of these releases on the radioactivity of sea-water depends on various factors, including the amount and frequency of discharges, the hydrodynamic regime of water masses in the region and local meteorological conditions. In order to assess this...
Tipo: Text
Palavras-chave: Manche; Eaux littorales; Radioactivité; Transferts; Analyse temporelle; Channel; Coastal waters; Radioactivity; Mass transfer; Time-series analysis.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/publication-541.pdf

Simulation de l'effet sur l’eutrophisation côtière bretonne de 3 scénarios de réduction des teneurs en nitrate et phosphate de chaque bassin versant breton et de la Loire
Provedor de dados: 5
Autores: Dussauze, Morgan; Menesguen, Alain.
This study commissioned by the Région Bretagne and the Agence de l'Eau Loire Bretagne aimed at assessing on a mathematical modelling basis the marine influence of most of watersheds in Brittany, and the impact of 4 scenarios of reduction of the loadings of each of these watersheds on the phytoplanctonic biomass and ulva mass proliferation. The ecological 3D model ECOMARS3D has been applied to a domain containing Brittany (which is also used in an operational mode for putting everyday the 2dayforecasts on the website: http://www.previmer.org/previsions/production_primaire/modele_eco_mars3d_bretagne) and to 6 zooms which enabled a finer representation of coastal waters. This study highlighted the fact that: •a nitrate reduction for any river has no effect on...
Tipo: Text
Palavras-chave: Bretagne; Bassins versants; Eaux côtières; Nitrate; Phosphate; Marée verte; Ulve; Diatomée; Dinoflagellé; Modèle mathématique; Brittany; Watersheds; Coastal waters; Nitrate; Phosphate; Green tide; Ulva; Diatom; Dinoflagellate; Mathematical model.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00097/20804/18429.pdf

The relationship between depth, substrate and ecology: a drop video study from the southeastern Australian coast
Provedor de dados: 5
Autores: Williams, Im; Leach, Jhj.
The relationship between hard substrate type, depth and ecology has not been widely investigated in Bass Strait, which separates mainland Australia from Tasmania. As this water body is important to the State, a study along the Victorian coastline using an inexpensive Along Track Video (ATV) system, along with equipment to record depths and locations, was implemented. A better understanding of the correlation between hard substrate, depth and ecology was thought to be valuable to enable researchers to determine to what extent the benthic biological communities depend on physical factors. This understanding should improve procedures to predict the seafloor ecology on the basis of geological and oceanographic data. The dominant species assemblages and...
Tipo: Text
Palavras-chave: Suivi vidéo; Vidéographie; Eau côtière; Victoria; Ressources marines sessiles; Along Track Video (ATV); Marine videography; Coastal waters; Victoria; Sessile marine resources.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43589/44029.pdf

Etude de la matière organique et demande en oxygène des sédiments en baie de vilaine
Provedor de dados: 5
Autores: Merceron, Michel.
After the fish mortality through an anoxia, which occured during the summer of 1982 in the bay of Vilaine, the oxygen consumption of the sediment was investigated during spring and summer. It was found moderately important, submitted to limited evolutions along time and on different zones. A significant correlation with the organic carbon content of sediment could not be established.    The oxygen consumption of the bottom waters was approached. In the bay of Vilaine as a whole, it was found more important than the sediment consumption. It could vary in a wide range, till leading to pronounced hypoxias, especially during phytoplankton. (Not controlled OCR)
Tipo: Text
Palavras-chave: Organic matter; Water oxygen consumption; Sediment oxygen consumption; Anoxia; Dissolved oxygen; Coastal waters; Matière organique; Respiration de la phase liquide; Respiration du sédiment; Anoxie; Oxygène dissous; Eaux côtières.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/rapport-2666.pdf

Development of a Semi-Analytical Algorithm for the Retrieval of Suspended Particulate Matter from Remote Sensing over Clear to Very Turbid Waters
Provedor de dados: 5
Autores: Han, Bing; Loisel, Hubert; Vantrepotte, Vincent; Meriaux, Xavier; Bryere, Philippe; Ouillon, Sylvain; Dessailly, David; Xing, Qianguo; Zhu, Jianhua.
Remote sensing of suspended particulate matter, SPM, from space has long been used to assess its spatio-temporal variability in various coastal areas. The associated algorithms were generally site specific or developed over a relatively narrow range of concentration, which make them inappropriate for global applications (or at least over broad SPM range). In the frame of the GlobCoast project, a large in situ data set of SPM and remote sensing reflectance, R-rs(lambda), has been built gathering together measurements from various coastal areas around Europe, French Guiana, North Canada, Vietnam, and China. This data set covers various contrasting coastal environments diversely affected by different biogeochemical and physical processes such as sediment...
Tipo: Text
Palavras-chave: Specific backscattering coefficient; Empirical algorithm; Semi-analytic algorithm; Coastal waters; Suspended particulate matter; Ocean color.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00589/70062/68010.pdf

Bilan 1997 de la contamination des eaux côtières françaises par les composés organostanniques.
Provedor de dados: 5
Autores: Michel, Pierre; Averty, Bernard.
Il y a quinze ans, la France prenait des mesures réglementaires pour restreindre l'usage des composés organostanniques dans les peintures antisalissures utilisées pour la protection des coques de bateaux. Il s'agissait alors d'une réaction d'urgence face au problème vital posé à l'ostréiculture française. La France était le premier pays à prendre de telles dispositions. Depuis, la réglementation a été confirmée à plusieurs reprises, en dernier lieu par le décret n°92-1074 du 2 octobre 1992. Quinze ans plus tard, où en sommes nous ? La campagne de mesure des composés organostanniques dans l'eau de mer, conduite par l'IFREMER de juillet à septembre 1997 a permis de faire le point de la situation. La contamination des côtes françaises reste préoccupante. Pour...
Tipo: Text
Palavras-chave: Composés organostanniques; Tributyl étain; TBT; Peintures antisalissures; Eaux côtières; Organotin compounds; Ributyltin; TBT; Antifouling paints; Coastal waters.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00104/21557/19136.pdf

Metal measurement in aquatic environments by passive sampling methods: Lessons learning from an in situ intercomparison exercise
Provedor de dados: 5
Autores: Dabrin, A.; Ghestem, J. -p.; Uher, E.; Gonzalez, Jean-louis; Allan, I. J.; Schintu, M.; Montero, N.; Balaam, J.; Peinerud, E.; Miege, C.; Coquery, M.
Passive sampling devices (PS) are widely used for pollutant monitoring in water, but estimation of measurement uncertainties by PS has seldom been undertaken. The aim of this work was to identify key parameters governing PS measurements of metals and their dispersion. We report the results of an in situ intercomparison exercise on diffusive gradient in thin films (DGT) in surface waters. Interlaboratory uncertainties of time-weighted average (TWA) concentrations were satisfactory (from 28% to 112%) given the number of participating laboratories (10) and ultra-trace metal concentrations involved. Data dispersion of TWA concentrations was mainly explained by uncertainties generated during DGT handling and analytical procedure steps. We highlight that DGT...
Tipo: Text
Palavras-chave: DGT; Uncertainty; Blank; Continental waters; Coastal waters.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00294/40560/39614.pdf

Quality-control tests for OC4, OC5 and NIR-red satellite chlorophyll-a algorithms applied to coastal waters
Provedor de dados: 5
Autores: Lavigne, H.; Van Der Zande, D.; Ruddick, K.; Cardoso Dos Santos, J.f.; Gohin, Francis; Brotas, V.; Kratzer, S.
Reliable satellite estimates of chlorophyll-a concentration (Chl-a) are needed in coastal waters for applications such as eutrophication monitoring. However, because of the optical complexity of coastal waters, retrieving accurate Chl-a is still challenging. Many algorithms exist and give quite different performance for different optical conditions but there is no clear definition of the limits of applicability of each algorithm and no clear basis for deciding which algorithm to apply to any given image pixel (reflectance spectrum). Poor quality satellite Chl-a data can easily reach end-users. To remedy this and provide a clear decision on when a specific Chl-a algorithm can be used, we propose simple quality control tests, based on MERIS water leaving...
Tipo: Text
Palavras-chave: Ocean colour; Chlorophyll-a algorithms; Coastal waters; Quality control; Algorithm-switching approach; MERIS; OLCI; Sentinel-3.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00675/78758/80933.pdf

Mortalites de poissons en baie de Vilaine (Juillet 1982) Causes - Mécanismes - Propositions d'action
Provedor de dados: 5
Autores: Merceron, Michel.
The massive number of fish mortalities that occurred in July of 1982 in Vilaine Bay is due to a very pronounced oxygen depletion in the bay's bottom waters. This loss was caused by the chronic fragility of this area, associated with an abnormal weather pattern. The endemism of partial oxygen depletion has been brought to light. The latter could be economically more significant than the anoxia of 1982. Preventative and warning actions have been proposed.
Tipo: Text
Palavras-chave: Brittany; Dam; Estuary; Meteorological factors; Stratification; Phytoplankton; Oxygen depletion; Coastal waters; Fish kill; Estuaire; Facteurs météorologiques; Stratification; Prolifération planctonique; Déficit en oxygène; Eaux côtières; Mortalité de poisson.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/rapport-2836.pdf

Potential of High Spatial and Temporal Ocean Color Satellite Data to Study the Dynamics of Suspended Particles in a Micro-Tidal River Plume
Provedor de dados: 5
Autores: Ody, Anouck; Doxaran, David; Vanhellemont, Quinten; Nechad, Bouchra; Novoa, Stefani; Many, Gael; Bourrin, Francois; Verney, Romaric; Pairaud, Ivane; Gentili, Bernard.
Ocean color satellite sensors are powerful tools to study and monitor the dynamics of suspended particulate matter (SPM) discharged by rivers in coastal waters. In this study, we test the capabilities of Landsat-8/Operational Land Imager (OLI), AQUA&amp;TERRA/Moderate Resolution Imaging Spectroradiometer (MODIS) and MSG-3/Spinning Enhanced Visible and Infrared Imager (SEVIRI) sensors in terms of spectral, spatial and temporal resolutions to (i) estimate the seawater reflectance signal and then SPM concentrations and (ii) monitor the dynamics of SPM in the Rhone River plume characterized by moderately turbid surface waters in a micro-tidal sea. Consistent remote-sensing reflectance (Rrs) values are retrieved in the red spectral bands of these four satellite...
Tipo: Text
Palavras-chave: River plumes; Coastal waters; High resolution; Suspended particulate matter; Remote sensing.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00333/44408/44066.pdf

Manual for using REPHY Data. Information to improve the understanding of REPHY data files available to scientists and the public
Provedor de dados: 5
Autores: Ifremer / ODE / VIGIES. REPHY national coordination &amp; Quadrige administration unit.
REPHY (Observation and Monitoring Network for Phytoplankton and Hydrology in coastal waters) is a network implemented by Ifremer. The data acquired by REPHY have been banked since 1987 in the Quadrige database. This manual is intended for users of REPHY data, which are made available on the internet from SEANOE. The Quadrige database is a component of the French Water Information System and its mission is to manage and exploit data from numerous coastal monitoring networks. SEANOE (Sea scientific open data publication) is a publisher of scientific data in the field of marine sciences. The REPHY dataset available in SEANOE makes available all REPHY data for the French metropolis, for years prior to the current year, in the form of fixed files, with an...
Tipo: Text
Palavras-chave: REPHY; Data; Quadrige; SEANOE; DOI; Phytoplankton; Hydrology; Physico‐chemical measurements; Coastal waters.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00409/52017/52675.pdf

Etude sur les contaminants émergents dans les eaux françaises - Rapport de l'étude prospective sur les contaminants émergents dans les eaux littorales de la métropole et des DOM
Provedor de dados: 5
Autores: Abarnou, Alain; Bocquene, Gilles; Champin, Maryline; Durand, Gaetane; Gonzalez, Jean-louis; Le Moigne, Morgan; Masson, Jean-claude; Priou, Pierre; Tixier, Celine.
This study contributes to inventory programme on emerging pollutants in French waters and to the general reflection which will enable to update the list of relevant substnaces to be included in the new monitoring programmes to come. This work concerns the coastal part of the inventory programme on marine waters and sediments of France and five overseas french departments (OFD). In this goal, passive sampling techniques and direct extraction techniques have been tested through the implementation of in situ systems integrators POCIS (Polar Organic Chemical Integrative Sampler) and the extraction by SBSE bars (Stir bar sorptive extraction) directly in the waters sampled. Finally, analyzes of sediment completed the acquisition of data. Arount 40 stations were...
Tipo: Text
Palavras-chave: Eaux littorales; Eaux côtières; Sédiment; Métropole; DOM; Pollution; Substances chimiques; POCIS; SBSE; Coastal waters; Sediment; France; Overseas french departments; Pollution; Chemicals contaminants; POCIS; SBSE.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00259/36994/35483.pdf

Atmospheric Corrections and Multi-Conditional Algorithm for Multi-Sensor Remote Sensing of Suspended Particulate Matter in Low-to-High Turbidity Levels Coastal Waters
Provedor de dados: 5
Autores: Novoa, Stefani; Doxaran, David; Ody, Anouck; Vanhellemont, Quinten; Lafon, Virginie; Lubac, Bertrand; Gernez, Pierre.
The accurate measurement of suspended particulate matter (SPM) concentrations in coastal waters is of crucial importance for ecosystem studies, sediment transport monitoring, and assessment of anthropogenic impacts in the coastal ocean. Ocean color remote sensing is an efficient tool to monitor SPM spatio-temporal variability in coastal waters. However, near-shore satellite images are complex to correct for atmospheric effects due to the proximity of land and to the high level of reflectance caused by high SPM concentrations in the visible and near-infrared spectral regions. The water reflectance signal ((w)) tends to saturate at short visible wavelengths when the SPM concentration increases. Using a comprehensive dataset of high-resolution satellite...
Tipo: Text
Palavras-chave: Remote sensing; Suspended particulate matter; Coastal waters; River plumes; Multi-conditional algorithm.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00590/70197/68222.pdf

Manual for using REPHYTOX Data. Information to improve the understanding of REPHYTOX data files available to scientists and the public
Provedor de dados: 5
Autores: Ifremer, ODE/VIGIES, REPHY-REPHYTOX national coordination &amp; Quadrige administration unit.
REPHYTOX (Monitoring Network for Phycotoxins in marine organisms) is a network implemented by Ifremer. The data acquired by REPHYTOX have been banked since 1987 in the Quadrige database. This manual is intended for users of REPHYTOX data, which are made available on the internet from SEANOE. The Quadrige database is a component of the French Water Information System and its mission is to manage and exploit data from numerous coastal monitoring networks. SEANOE (Sea scientific open data publication) is a publisher of scientific data in the field of marine sciences. The REPHYTOX dataset available in SEANOE makes available all REPHYTOX data for the French metropolis, for years prior to the current year, in the form of fixed files, with an annual update. The...
Tipo: Text
Palavras-chave: REPHYTOX; Data; Quadrige; SEANOE; DOI; Phycotoxins; DSP; PSP; ASP; Palytoxins; Shellfish; Coastal waters.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00409/52019/52677.pdf

An iron budget during the natural iron fertilisation experiment KEOPS (Kerguelen Islands, Southern Ocean)
Provedor de dados: 5
Autores: Chever, F.; Sarthou, G.; Bucciarelli, E.; Blain, S.; Bowie, A. R.
Total dissolvable iron (TDFe) was measured in the water column above and in the surrounding of the Kerguelen Plateau (Indian sector of the Southern Ocean) during the KErguelen Ocean Plateau compared Study (KEOPS) cruise. TDFe concentrations ranged from 0.90 to 65.6 nmol L-1 above the plateau and from 0.34 to 2.23 nmol L-1 offshore of the plateau. Station C1 located south of the plateau, near Heard Island, exhibited very high values (329-770 nmol L-1). Apparent particulate iron (Fe-app), calculated as the difference between the TDFe and the dissolved iron measured on board (DFe) represented 95 +/- 5% of the TDFe above the plateau, suggesting that particles and refractory colloids largely dominated the iron pool. This paper presents a budget of DFe and...
Tipo: Text
Palavras-chave: Phytoplankton bloom; Dissolved iron; Atlantic ocean; Central california; Carbon sequestration; Coastal waters; Surface waters; Plateau region; Organic carbon; Bound iron.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00205/31605/30036.pdf

Rising water temperatures, reproduction and recruitment of an invasive oyster, Crassostrea gigas, on the French Atlantic coast
Provedor de dados: 5
Autores: Dutertre, Mickael; Beninger, Peter G.; Barille, Laurent; Papin, Mathias; Haure, Joel.
The recent appearance and invasion of feral oysters (Crassostrea gigas) along the northern European Atlantic coast, underscores the necessity to investigate the relationship between environmental variables, reproductive physiology, larval development and recruitment. We studied these relationships at both high (HT) and intermediate (IT) - turbidity sites, through historical data on water temperatures, multi-parameter environmental probes, histological analyses, and field collections of planktonic larvae and settled post-larvae in 2005 and 2006. A progressive warming trend was observed, especially since 1995, when oyster proliferation first became severe. Threshold temperatures for oocyte growth, larval development and settlement were achieved in both 2005...
Tipo: Text
Palavras-chave: Aquaculture; Climate warming; Coastal waters; Crassostrea gigas; Reproductive cycle; Oyster larvae; Settlement; Turbidity.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00000/11150/7938.pdf

Balneola vulgaris gen. nov., sp nov., a member of the phylum Bacteroidetes from the north-western Mediterranean Sea
Provedor de dados: 5
Autores: Urios, Laurent; Agogue, Hélène; Lesongeur, Francoise; Stackebrandt, Erko; Lebaron, Philippe.
A novel aerobic, Gram-negative bacterium, named 13IX/A01/164(T), was isolated from surface waters in the coastal north-western Mediterranean Sea. Cells were motile, straight rods, 2-5 mu m long and 0-2 mu m wide, and formed orange colonies on marine agar medium. The G+C content of the genomic DNA of strain 13IX/A01/164T was 42 mol%. Phylogenetic analysis of the 16S rRNA gene sequence placed the strain in the phylum Bacteroidetes within the family Crenotrichaceae. On the basis of 16S rRNA gene sequence comparison and physiological and biochemical characteristics, this isolate represents a novel species of a new genus, for which the name Balneola vulgaris gen. nov., sp. nov. is proposed. The type strain of Balneola vulgaris is 13IX/A01/164T (=DSM 17893T=CIP...
Tipo: Text
Palavras-chave: Mediterranean sea; Coastal waters; Microbiology; Physiology; Biochemistry; Gene sequence; Balneola vulgaris.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2126.pdf

Les métaux traces (Cd, Pb, Hg) et les hydrocarbures totaux dans les sédiments superficiels de la frange cotière du golfe de Gabès
Provedor de dados: 20
Autores: Chouba, L.; Mzougui-Aguir, N.
Dans l’objectif de déterminer l’état de la contamination organique et inorganique des sédiments superficiels de la frange côtière du golfe de Gabès, nous avons évalué les concentrations en hydrocarbures aromatiques totaux, en cadmium (Cd), en plomb (Pb) et en mercure (Hg).  L’échantillonnage a été effectué à bord d’une barque motorisée, à l’aide d’une benne Van Veen au niveau de 25 stations. Les concentrations du Cadmium et du Plomb ont été déterminées par Spectrométrie d’Absorption Atomique à Four Graphite (Varian 220Z) alors que pour le Mercure les analyses ont été réalisées par Spectrométrie d’Absorption Atomique à vapeur froide. Les hydrocarbures totaux ont été analysés par UV-Fluorescence (UV-F). Les concentrations du Cadmium et du Mercure dans la...
Tipo: Journal Contribution
Palavras-chave: Cadmium; Coastal waters; Hydrocarbons; Lead; Marine pollution; Mercury; Pollution monitoring; Sediments; Trace metals.
Ano: 2006
URL: http://hdl.handle.net/1834/4275

Environmental Pollution In The Nigeria Coastal Waters; A Case Study Of The Lagos Lagoon
Provedor de dados: 20
Autores: Adekanbi, E.O.; Okoye, B.C.O.; Ajao, E.A.
The state of pollution in the Lagos lagoon was examined by a field survey of twenty-six sites (stations) in the dry and wet season in 1985. Some selected sites were further re-examined in the same period in 1986. The sediment trace metals and total hydrocarbons were analysed. The relationship between non residual and residual trace elements was examined. For both years of study, total trace metal levels (mg/kg) fell in the ranges: Cu,1.9 – 132.4, Cr, 2.9 – 167; 7.8 – 830. 6; Ph, 1.6 – 483.1 and Cd, 0.04 – 15.5. Total hydrocarbon concentrations in 1985 ranged from 0.25 to 2766.27 mg/g with high concentrations in muddy and sandy sediments. The results show marked variations and non – uniform distribution from one season to another. With few exceptions,...
Tipo: Working Paper
Palavras-chave: Environmental pollution; Coastal waters.
Ano: 1991
URL: http://hdl.handle.net/1834/269

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

Imbrication d'un modèle de circulation des eaux près des cotes Tunisiennes dans un modèle de circulation de la mer Méditerranée
Provedor de dados: 20
Autores: Alioua. M.; Harzallah, A.
La présente étude a pour objectif la mise en place d’un système de modélisation numérique de la dynamique marine près des côtes tunisiennes. Pour cela on imbrique un modèle de circulation de l’eau près des côtes tunisiennes dans un modèle de circulation générale de la mer Méditerranée. La grille du modèle des côtes tunisiennes comporte la possibilité d’augmenter la résolution dans un domaine ciblé. Les conditions initiales pour ce modèle étiré sont obtenues par interpolation des états simulés par le modèle côtier à résolution constante. Vu sa résolution plus élevée, le modèle à grille étirée nécessite un long temps de calcul. Cependant les tests effectués avec ce modèle montrent que des simulations de 20 jours suffisent pour atteindre un équilibre...
Tipo: Journal Contribution
Palavras-chave: Coastal waters; Mathematical models; Water circulation.
Ano: 2008
URL: http://hdl.handle.net/1834/4268

Evaluación de la calidad ambiental de las aguas del litoral de la Ciudad de la Habana en el período lluvioso del año 2009
Provedor de dados: 20
Autores: García, L.; Martínez, A.J.; Pérez, M.; López, L.; Ruiz, M.; Solar, F.; Beltrán, J.
Las actividades de origen antropogénico en las zonas costeras han tenido efectos dramáticos y negativos sobre la composición química del agua de mar en muchas áreas. Con el objetivo de evaluar el grado de contaminación de las aguas del litoral de Ciudad de La Habana se realizaron análisis físicos, químicos y microbiológicos de calidad de agua. Los resultados obtenidos demuestran que los ríos están ejerciendo la mayor influencia sobre la zona costera del litoral habanero en cuanto a aportes de contaminantes en términos de nitrógeno amoniacal, fósforo y altas concentraciones de materia órganica no biodegradable. En la mayoría de las estaciones se observó una tendencia a la disminución de los coliformes fecales y una tendencia al incremento de los valores...
Tipo: Preprint
Palavras-chave: Coastal waters; Marine pollution; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2010
URL: http://hdl.handle.net/1834/3627

Analyse harmonique des séries chronologiques des niveaux d’eau et des courants au niveau de RasTaguermess et à el kantara dans le golfe de Gabès
Provedor de dados: 20
Autores: Atoui., A.; Brahim, M.; Sammari, Ch.
Dans le cadre d’un programme national concernant l’étude de la circulation des eaux dans le littoral  tunisien nous avons installé des courantomètres et des houlographes marégraphes dans le golfe de Gabès et notamment à l’Est de Djerba, en face de Ras-Taguermess et au niveau d’El Kantara. L’analyse harmonique des séries temporelles de niveau d’eau au niveau de Ras Taguermess et El-Kantara montre la dominance des composantes de la marée semi-diurne avec prédominance de la composante semi-diurne (M2) de période 12 h 25 mn. L’analyse en composantes principales où en fonction orthogonale empirique (EOF) des courants de la marée montre qu’au niveau d’El- Kantara la vitesse des courants est de 45 cm.s-1 et que sa direction est de 29° par rapport à l’Est ;...
Tipo: Journal Contribution
Palavras-chave: Coastal waters; Current velocity; Harmonic analysis; Tidal currents; Time series; Water circulation; Water currents; Water levels.
Ano: 2009
URL: http://hdl.handle.net/1834/4618

Distribución del nitrito en las aguas costeras ecuatorianas
Provedor de dados: 20
Autores: Trejos de Suescum, R.; Okuda, T.
Este trabajo fue realizado con el fin de analizar la distribución regional y vertical del nitrito máximo en relación con las características hidroquímicas y la posible existencia de un segundo máximo de nitrito en las aguas costeras del Ecuador, y está basado en los datos obtenidos a través de varios cruceros de investigación realizados por el Instituto Oceanográfico de la Armada del Ecuador (INOCAR) durante los años comprendidos entre 1973-1980.
Tipo: Journal Contribution
Palavras-chave: Distribution; Nitrites; Coastal waters; Distribution; Nitrites; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_5190; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1983
URL: http://hdl.handle.net/1834/2096

Oceanografía física del estuario del Río de la Plata y el sistema costero de El Rincón. Noviembre, 1994
Provedor de dados: 20
Autores: Guerrero, R.A.
Using the CTD data obtained on the R/V Dr.E.L.Holmberg fishery research cruise H-13/94 (November 1994), oceanographic conditions of the coastal area of the Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina) are described. Two physical environments were differentiated: the Río de la Plata estuarine systems and El Rincón coastal regime. In both systems thermal and haline fronts that affect the distribution of reproductive concentrations, nursery and spawning areas of coastal species, are identified. Salinity fields of the AUCFZ, as a function of statistical winds, are synoptically analyzed. In El Rincón, the temporal stability observed on temperature and salinity allowed to describe the mean physical conditions for...
Tipo: Journal Contribution
Palavras-chave: Estuarine front; Coastal waters; CTD observations; Hydrography; Salinity profiles; Temperature profiles; Coastal oceanography; Coastal waters; Hydrography.
Ano: 1998
URL: http://hdl.handle.net/1834/2469

Première observation de la calicagère blanche "Kyphosus sectatrix " (linnaeus, 1758) sur les  côtes Tunisiennes
Provedor de dados: 20
Autores: Hattour, A.
Un nouveau poisson pour la faune ichthyque tunisienne fût capturé le mois de janvier 2005, par un plongeur autonome en face de la localité de Salakta (Mahdia) à une profondeur voisine de 6 mètres. Il s’agit d’un Kyphosidae de l’espèce Kyphosus sectatrix. C’est une espèce atlantique rarement citée dans les eaux méditerranéennes. Cette signalisation dans les eaux tunisiennes est la première. Les principales caractéristiques du spécimen sont donnés.
Tipo: Journal Contribution
Palavras-chave: Animal morphology; Coastal waters; Cosmopolite species; Geographical distribution; Marine fish; New records; Kyphosus sectatrix; Http://aims.fao.org/aos/agrovoc/c_43425.
Ano: 2006
URL: http://hdl.handle.net/1834/4280

Producción estacional de Oithona nana (Copepoda: Cyclopoida) en aguas costeras de Argentina
Provedor de dados: 20
Autores: Temperoni, B.
Oithona nana (Copepoda: Cyclopoida)is a widely-distributed neritic species, which often comprises up to 90 percentage of the zooplankton in many coastal areas. This small copepod plays an important role as a dominant prey in the diet of Engraulis anchoita larvae, which is a main component of major ecological relevance in the pelagic food webs of the Argentine Sea (SW Atlantic Ocean). The objective of this study was to estimate, for the first time, the seasonal variation of O. nana secondary production in a temperate region: coastal waters off Buenos Aires province, Argentina, at the EPEA Station (Estación Permanente de Estudios Ambientales, (38°28' S-57°41' W). Zooplankton samples (N=14)were taken by oblique tows of a Minibongo net (mouth diameter: 0.18 m;...
Tipo: Theses and Dissertations
Palavras-chave: Secondary production; Coastal waters; Zooplankton; Seasonal variations; Abundance; Environmental conditions; Zooplankton; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2008
URL: http://hdl.handle.net/1834/3131

Notas hidrológicas de aguas superficiales ecuatorianas según indicadores biológicos-foraminíferos planctónicos
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.
El presente trabajo trata sobre la distribución de los foraminíferos planctónicos vivos en aguas superficiales del mar ecuatoriano, durante los periodos normales y anómalos del océano, ocurridos en determinadas épocas de los años 1971 a 1973 y 1974. El área de muestreo de mayor extensión comprende desde la costa hasta Long. 86°W entre Lat. 01°22'N y Lat. 03°16'S. La distribución de los foraminíferos planctónicos evidencia el desplazamiento de masas de aguas procedentes de la Cuenca de Panamá, Corriente del Perú y zonas de convergencia. Las especies indicadoras de aguas cálidas fueron: Globigerinoides ruber, Bloborotalia mebnardii, Globigerinoides sacculifer y de aguas frías: Globigerina quinqueloba, Globigerinita bradyi, Globigerina bulloides. Durante la...
Tipo: Journal Contribution
Palavras-chave: Foraminifera; Plankton; Indicator species; Vertical distribution; Horizontal distribution; Coastal waters; Environmental conditions; Plankton; Indicator species; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_35790; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1992
URL: http://hdl.handle.net/1834/2313

Influencia ambiental en la distribución espacial de las clases de edad de pez palo (Percophis brasiliensis) en el Sistema Costero del Atlántico Sudoccidental (34°-41° S)
Provedor de dados: 20
Autores: Barretto, A.C.
The age-class distribution of the Brazilian flathead Percophis brasiliensis in relation to environmental variables in spring and winter, and the growth of both sexes, were studied in the SW Atlantic Coastal System (SACS)(34°S-31° S). Growth was studied from 1449 individuals (n=853, spring (1998 + 2000), n=596, winter (2004)) to which size (TL), sex, and age were determined. Age was determined considering that an opaque plus a hyaline band (present in the transverse section of the sagitta otolith) represented 1 year of life. The age-class distribution in spring and winter was established through hierarchical clustering and non-metric multi-dimensional scaling (nMDS analysis). This analysis grouped sampling stations (n=109, spring 1998; n=160, winter 2004)...
Tipo: Theses and Dissertations
Palavras-chave: Age groups; Age composition; Environmental factors; Geographical distribution; Population structure; Growth; Environmental effects; Coastal waters; Age composition; Environmental factors; Geographical distribution; Population structure; Growth; Age groups; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_29093; Http://aims.fao.org/aos/agrovoc/c_2594; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_28628; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2007
URL: http://hdl.handle.net/1834/3017

Determination of persistent organic pollutants in water of new Damietta harbour, Egypt
Provedor de dados: 20
Autores: Hamed, M.A.; Said, T.O.
Persistent organic pollutants (POPs) which include chlorinated pesticides and petroleum hydrocarbons were determined in water samples collected from Damietta Harbour during 2005. Concentration of total pesticides ranged from 0.02 to 0.07 ng/L and from 1.09 to 201.82 ng/L during winter and summer seasons, respectively. The increasing order of total pesticides was: THCHs &lt; TC &lt; total DDTs with concentrations ranged from 0.004-3.20 ng/L, 0.001-3.93 ng/L and 0.002-194.68 ng/L, respectively in the area of study. The average concentrations of total petroleum hydrocarbons were below the admissible environmental levels. They ranged from 2.17-72.89 µg/L and from 5.67-87.56 µg/L during January and July 2005, respectively. However, concentrations of PAHs were...
Tipo: Journal Contribution
Palavras-chave: Environmental Studies (Pollution Studies); Pollutants; Coastal waters; Pollutants; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_6076; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2006
URL: http://hdl.handle.net/1834/1462

Cambios de la densidad de los cladóceros P. avirrostris y E. tergentina durante las épocas cálidas y frías (Dic. 2004 y nov. 2005) en la Bahía de Santa Elena (La Libertad - Ecuador)
Provedor de dados: 20
Autores: Andrade, C.
El objetivo del presente estudio es determinar los cambios poblacionales durante las estaciones cálida y fría de este grupo taxonómico y del zooplancton acompañante más abundante en aguas de la Bahía de Santa Elena vs. las variables ambientales temperatura y salinidad.
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Seasonal variations; Coastal waters; Community composition; Population number; Zooplankton; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2007
URL: http://hdl.handle.net/1834/2345

Evaluación de las zonas con impacto antrópico del Golfo de Batabanó, Cuba. Empleo de indices de calidad
Provedor de dados: 20
Autores: Martínez Canals, M.; Montalvo, J.F.; Miravet, M.E.; Lugioyo, M.; Loza, S.; Pérez, R.
The evaluation of the possible environmental changes due to the anthropic impacts that have happened in the last years in this scenario and the redefinition of areas that suffer affectations were carried up. Any environmental alteration of this ecosystem, either of natural or human origin, can have an important economic and social repercussion. According to the proposed chemical and biological indexes, the waters of the Gulf of Batabanó presented mesotrophic conditions with tendency to the eutrofization in four fundamental areas. In the silts of the Gulf the values of organic carbon and sulphidric acid were characteristic of sediments with high concentrations of organic matter. In the coastal sector N, was determinate high concentrations of sulphidric acid...
Tipo: Conference Material
Palavras-chave: Heavy metals; Environmental impact; Coastal waters; Water quality; Man-induced effects; Marine pollution; Heavy metals; Environmental impact; Water quality; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2006
URL: http://hdl.handle.net/1834/2254

Imbrication d'un modèle de circulation des eaux près des cotes Tunisennes dans un modèle de circulation de la mer Méditérranée
Provedor de dados: 20
Autores: Harzallah, A.; Alioua, A.
La présente étude a pour objectif la mise en place d’un système de modélisation numérique de la dynamique marine près des côtes Tunisiennes. Pour cela on imbrique un modèle de circulation de l’eau près des côtes Tunisiennes dans un modèle de circulation générale de la mer Méditerranée. La grille du modèle des côtes Tunisiennes comporte la ossibilité d’augmenter la résolution dans un domaine ciblé. Les conditions initiales pour ce modèle étiré sont obtenues par interpolation des états simulés par le modèle côtier à résolution constante. Vu sa résolution plus élevée, le modèle à grille étirée nécessite un long temps de calcul. Cependant les tests effectués avec ce modèle montrent que des simulations de 20 jours suffisent pour atteindre un équilibre...
Tipo: Journal Contribution
Palavras-chave: Coastal waters; Mathematical models; Water circulation; Water circulation; Coastal waters; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_8314; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2008
URL: http://hdl.handle.net/1834/4159

Variación temporal del zooplancton  de una estación fija en Bahía Academia (Galápagos) período 1986-1988: Su relación con la temperatura superficial
Provedor de dados: 20
Autores: Arcos, F.; Bonilla, M.A.
El presente trabajo se basa en el estudio cuali-cuantitativo y de diversidad de 95 muestras de plancton colectadas semanalmente en aguas superficiales costeras en una estación fija localizada en Bahía Academia, Isla Santa Cruz (Galápagos) durante septiembre 1986-septiembre 1988. Se exponen 27 grupos de organismos de zooplancton, siendo los dominantes, los copépodos, larvas de decápodos, huevos de peces, lamelibranquios, ostrácodos, pterópodos y apendicularios; y los más frecuentes, copépodos, larvas de decápodos, huevos de peces, pterópodos, apendicularios, quetognatos, lamelibranquios y larvas de peces. Se determinan los diversos géneros de copépodos, siendo las especies más abundantes en orden decreciente: Acartia levenquei, Pseudodiaptomus galapaguensis...
Tipo: Journal Contribution
Palavras-chave: Temporal variations; Zooplankton; Coastal waters; Surface temperature; Zooplankton; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1989
URL: http://hdl.handle.net/1834/2149

Primeros registros de la Orca pigmea Feresa attenuata (Cetacea, delphinidae) y del Cachalote enano Kogia simus (Cetacea, physeteridae) en Ecuador continental
Provedor de dados: 20
Autores: Félix, F.; Haase, B.; Samaniego, J.
Se presenta información sobre los primeros registros de la orca pigmea (Feresa attenuata) y del cachalote enano (Kogia simus) realizados en aguas costeras de Ecuador. La información se basa en un espécímen joven de orca pimea encontrado en la costa y en la cabeza colectada de un cachalote enano atrapado en una red agallera. Además se informa sobre el primer espécimen de un cachalote enano (K. simus) colectado en las islas Galápagos.
Tipo: Journal Contribution
Palavras-chave: Marine mammals; New records; Coastal waters; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1996
URL: http://hdl.handle.net/1834/2194

Estudio de la calidad de las aguas costeras insulares en la Provincia de Galápagos
Provedor de dados: 20
Autores: Rodríguez de Morán, A.; Valencia, M.
El presente trabajo se orienta para conocer la calidad actual de las aguas costeras insulares de cinco Bahías del Archipiélago: Naufragio, Academia, Darwin, Puerto Velasco Ibarra y Puerto Villamil.
Tipo: Journal Contribution
Palavras-chave: Water quality; Chemical composition; Salinity; Water temperature; Coastal waters; Oceanic islands; Water quality; Chemical composition; Water temperature; Salinity; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_1794; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2000
URL: http://hdl.handle.net/1834/2241

Reproducción del pez palo (Percophis brasiliensis) en aguas costeras de la provincia de Buenos Aires
Provedor de dados: 20
Autores: Militelli, M.I; Macchi, G.J.
The reproductive biology of Percophis brasiliensis sampled during December 1998 in coastal waters off the Buenos Aires Province (Argentine Sea) (36°-42°S)was studied using macroscopic and microscopic gonad analysis. Size at first maturity of brazilian flathead showed highly significant differences (P 0.01)between sexes, being 28.98 Lt cm for males and 38.34 Lt cm for females. Microscopic analysis of ovaries showed that this species is a batch spawner. At the beginning of December the reproductive activity decreased and a high percentage of atresia was observed. Spawning females (with hydrated oocytes)were concentrated in shallow waters near Claromeco and Necochea (38°30'-39°S)between 14 and 16°C, coinciding with a bottom thermal front.
Tipo: Journal Contribution
Palavras-chave: Ovaries; Histology; Coastal waters; Ovaries; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2001
URL: http://hdl.handle.net/1834/1864

Aspectos reproductivos de las principales especies de peces en la Zona Comun de Pesca Argentino-Uruguaya y en El Rincón. Noviembre, 1994
Provedor de dados: 20
Autores: Macchi, G.J.; Acha, E.M.
The maturity stages of the main commercial coastal fishes caught during the cruise H-13/94 are macroscopically analyzed, focusing this study on the white croaker Micropogonias furnieri and the striped weakfish Cynoscion striatus. Samples were obtained in the Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina) during November 1994.
Tipo: Journal Contribution
Palavras-chave: Marine fish; Reproduction; Sexual maturity; Environmental conditions; Coastal waters; Reproduction; Sexual maturity; Environmental conditions; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1998
URL: http://hdl.handle.net/1834/2473

environmental assessment on the aqaba gulf coastal waters, egypt
Provedor de dados: 20
Autores: Abdel-Halim, A.M.; Aboel-Khair, E.M.; Fahmy, M.A.; Shridah, M.A.
Environmental Information and Monitoring Programme (EIMP) for the Egyptian coastal waters of Aqaba Gulf was established to initial monitoring and data base system by applying quality control assessments in order to evaluate, protect and sustainable use of coastal regions. Within the framework of this programme six bimonthly field campaigns were carried out annually during 1998 – 2004. A total of 11 coastal stations were selected to cover different locations of the Gulf. The surface distribution patterns of hydrographical parameters (water temperature, salinity, dissolved oxygen and pH) as well as chlorophyll-a, total suspended matter, transparency, nitrogen and phosphorus forms and reactive silicate were investigated. The obtained data of seven years work...
Tipo: Journal Contribution
Palavras-chave: Environmental Field Study; Coastal waters; Hydrographic data; Environmental assessment; Coastal waters.
Ano: 2007
URL: http://hdl.handle.net/1834/1911

Características físicas, químicas y microbiológicas de las aguas marino costeras del área de Caleta Aeolian, Isla Baltra - Prov. de Galápagos, septiembre - 2006
Provedor de dados: 20
Autores: Gamboa, M.C.
El presente trabajo da a conocer las condiciones ambientales actuales en que se encuentran las aguas costeras en Caleta Aeolián de la Isla Baltra, a fin de contribuir a futuras investigaciones.
Tipo: Journal Contribution
Palavras-chave: Chemical oceanography; Coastal waters; Nutrients (mineral); Petroleum hydrocarbons; Microbiology; Pollution detection; Chemical oceanography; Coastal waters; Microbiology; Http://aims.fao.org/aos/agrovoc/c_1516; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_4800.
Ano: 2007
URL: http://hdl.handle.net/1834/2367

Calidad ambiental de las aguas del tramo costero Bacuranao – Rincón de Guanabo, Playas del Este, Ciudad de La Habana, Cuba
Provedor de dados: 20
Autores: Martín Páramo, A.; Pérez, M.; Beltrán, J.; Mancebo, H.; Rosabal, M.
This study presents some results of monitoring the beaches at East of Havana City, Cuba, during February and August corresponding to the rainy and less rainy seasons, respectively. For the bacteriological analysis were carried out 5 samplings in a period of 30 days, the rest of the samples was collected as punctual samples. The results are compared with those obtained in other samplings, specifically with 2004 period and with the requirements in the Cuban Standard NC: 22, (1999). Practically, the whole area showed pollution indicators deteriorated, such as: the permanganate oxidability value, bacteriological indicators and hydrocarbons, the last one corresponds to a lightly polluted area by hydrocarbons. The most affected areas were the outlet of the...
Tipo: Proceedings Paper
Palavras-chave: Coastal waters; Water quality control; Pollution monitoring; Bacteriology; Coastal waters; Bacteriology; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_768.
Ano: 2006
URL: http://hdl.handle.net/1834/2174

on the distribution of zooplankton assemblaces in abu-qir bay, alexandria, egypt
Provedor de dados: 20
Autores: Zakaria, H.Y.
Abu Qir Bay is a shallow semi-circular basin lying 35 Km east of Alexandria city. The bay is facing the problem of pollution which discharged into the bay from different sources; El-Tabia Pumping Station (TPS), the outlet of Idku Lake and the Rosetta mouth of the Nile River. Quantitative and qualitative studies of zooplankton community in Abu Qir Bay were performed seasonally during 2004. Fourteen stations were selected to represent the different habitats in the bay.The seasonal variations of zooplankton standing stock in Abu Qir Bay indicated that, the highest count (average 87.1x103 ind/m3) occurred during spring, while the lowest (average 44.2x103 ind/m3) was recorded in summer. The average zooplankton count during the period of study amounted to...
Tipo: Journal Contribution
Palavras-chave: Field Study; Zooplankton; Coastal waters; Zooplankton; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2007
URL: http://hdl.handle.net/1834/1900

El zooplancton de las Islas Galápagos
Provedor de dados: 20
Autores: Bonilla, D.
El presente trabajo es el resultado de un análisis cuali-cualitativo de 84 muestras de plancton colectadas en aguas costeras (10.-0 m de profundidad) en diez localidades de las Islas Galápagos entre Agosto de 1975 - Julio de 1976. Se da a conocer 29 grupos de organismos del zooplancton, determinándose que los grupos dominantes en las estaciones objeto de este estudio y en orden decreciente de su abundancia fueron: Copépodos, Pterópodos, Apendiculares, Quetognatos, Decápodos y Huevos de Peces. Se hacen evaluaciones del volumen de plancton y de la cantidad de organismos del zooplancton. Se detrmina que la distribución del zooplancton fue poco homogénea en las localidades estudiadas. mayores concentraciones se registraron hacia la parte central del...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Coastal waters; Geographical distribution; Abundance; Zooplankton; Geographical distribution; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1983
URL: http://hdl.handle.net/1834/2120

Biología reproductiva comparada de especies de la familia Sciaenidae en aguas del Río de la Plata y Costa Bonaerense
Provedor de dados: 20
Autores: Militelli, M.I.
In the Argentine Sea (SW Atlantic), particularly in the Bonaerense Coastal Zone there are two frontal zones, the waterfront area of the Rio de la Plata and the southern area of the province called El Rincón. The fauna of the Bonaerense Coastal Area has its own characteristics and in the case of fish is defined by dominant species, as is the whole of Sciaenidae family composed of seven species: white mouth croaker (Micropogonias furnieri), striped weakfish (Cynoscion guatucupa), king weakfish (Macrodon ancylodon), black drum (Pogonias cromis), Argentine croaker (Umbrina canosai), drum (Paralonchurus brasiliensis) and southern kingfish (Menticirrhus americanus). In the present work is discussed in a comparative way various aspects of the reproductive cycle...
Tipo: Theses and Dissertations
Palavras-chave: Brackishwater fish; Reproduction; Spawning grounds; Coastal waters; Fronts; Environmental conditions; Histology; Reproduction; Spawning grounds; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2007
URL: http://hdl.handle.net/1834/3549

Edad, crecimiento e influencia del ambiente en la distribución de Paralichthys patagonicus en el Sistema Costero del Atlántico Sudoccidental ( 34º-41ºS)
Provedor de dados: 20
Autores: Riestra, C.M.
La edad, el crecimiento y la influencia del ambiente en la distribución estacional (invierno y primavera) de las clases de edad de Paralichthys patagonicus  fueron estudiadas en el Sistema Costero del Atlántico Sudoccidental (SCAS) (34º-41ºS). Para determinar la edad se analizaron los otolitos sagittae provenientes de 1402 ejemplares colectados en otoño-invierno (n = 695) y en primavera-verano (n = 707) en campañas de investigación y desembarque comercial realizados entre el 2005 y 2009. En cada ejemplar se determinó largo total, peso, sexo. La validación de la formación de los anillos de crecimiento se realizó mediante el análisis mensual del borde del otolito. La precisión de las lecturas se evaluó a través del índice de precisión, coeficiente de...
Tipo: Theses and Dissertations
Palavras-chave: Age determination; Growth; Environmental conditions; Geographical distribution; Coastal waters; Geographical distribution; Age determination; Growth; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2010
URL: http://hdl.handle.net/1834/4065

Latitudinal disparity in the reproductive cycle of sharpnose shark, Rhizoprionodon lalandii (Elasmobranchii: Carcharhinidae), in Atlantic waters off South America
Provedor de dados: 103
Autores: Macedo,Morgana M.; Sousa,Marcia F.; Batista,Vandick S.
Geographical variation in biophysical conditions may strongly influence the life history characteristics of widely distributed species, such as the Brazilian sharpnose shark, Rhizoprionodon lalandii (Müller &amp;amp; Henle, 1839). Here, we use original and secondary data of reproductive traits of R. lalandii to identify population differences among northern/northeastern and southern Atlantic waters of South America. In the southeast region, birth occurs between December and March, and the young become frequent along the coast between April and September. Mating occurs mainly between March and June, when females with bite marks are common. Females in early pregnancy occur between March and September. The reproductive cycle of R. lalandii in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal waters; Life history; Reproductive traits; Northeastern Brazil.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000500004

Virioplankton Abundance in Trophic Gradients of an Upwelling Field
Provedor de dados: 58
Autores: Pereira,G.C.; Granato,A.; Figueiredo,A.R.; Ebecken,N.F.F.
This work correlates time series of biological and physical variables to the marine viruses across trophic gradients within Arraial do Cabo upwelling system, Southeast of Brazil. The objective is to investigate the major controlling factors of virioplankton dynamics among different water masses. It was used an in situ and ex situ flow cytometry for accessing the plankton community. Viruses were highly correlated to bacteria and phytoplankton, but although the lack of direct correlation with physicals, upwelling turned out to be the main contributing factor to the highest values of viral abundance and virus:bacterial ratio. Our data suggest that the lowest temperature of upwelled South Atlantic Central Waters would help to maintain a high viral abundance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marine virus; Coastal waters; Trophic gradients; Upwelling system.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000400017