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Registros recuperados: 33
Primeira ... 12 ... Última
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Annual and seasonal dynamics of deep-sea megafaunal epibenthic communities in Barkley Canyon (British Columbia, Canada): a response to climatology, surface productivity and benthic boundary layer variation ArchiMer
Chauvet, Pauline; Metaxas, Anna; Hay, Alex E.; Matabos, Marjolaine.
Understanding the impact of the environment on temporal trends in the composition and abundance of deep-sea species is essential for forecasting evolution of the community in the context of climate change. The recent development of deep-sea observatories enables multidisciplinary studies of long duration and high temporal resolution. We used a platform at the Ocean Networks Canada NEPTUNE Observatory located in the axis of Barkley Canyon between June 2012 and January 2015 to: (1) characterize the megabenthic community and the environmental conditions in the canyon; (2) investigate temporal patterns in the faunal community; and (3) determine the influence of environmental conditions on the observed patterns. The megafaunal epibenthic community, which...
Tipo: Text Palavras-chave: Deep-sea observatory; Inter-annual variation; Seasonal variation; Deep-sea canyon; Zoobenthos; Oxygen minimum zone; Canada; British Columbia; Barkley Canyon.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00436/54715/56152.pdf
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Aquatic insects as the main food resource of fish the community in a Neotropical reservoir Neotropical Ichthyology
Vidotto-Magnoni,Ana Paula; Carvalho,Edmir Daniel.
We evaluated the feeding of fish species of the Nova Avanhandava Reservoir, low Tietê River, São Paulo State, Brazil. Fishes were collected in two stretches of the reservoir: Santa Bárbara (14 samples) and Bonito (two samples) between September 2002 and March 2004, using gill and seining nets. The results of stomach contents analysis were expressed with the frequency of occurrence and gravimetric method, combined in the Alimentary Index (AI). The 20 species studied consumed 52 food items, grouped in 10 food categories: aquatic insects, terrestrial insects, crustaceans, fish, macroinvertebrates, microcrustaceans, algae, vegetal matter, detritus/sediment and scales. The aquatic insects (mainly Chironomidae, Odonata and Ephemeroptera) were the most common...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish feeding; Trophic ecology; Resource availability; Zoobenthos.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400020
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Asociación bentónicas en bancos de vieira patagónica (Zygochlamys patagonica) en el Mar Argentino OceanDocs
Schejter, L..
The different aspects of the benthic assemblages at the Patagonian scallop beds in the Argentine Sea (SW Atlantic) were studied. The Patagonian scallop (Zygochlamys patagonica) is a commercial species distributed in the Magellanic Biogeographic Province, and has been commercially exploited since 1996. Temporal and spatial studies were performed in the community composition between 39°50'S and 36°15'S, and between 1998 and 2003, concluding that the species association was persistent after more than 7 years of trawling activities. Species composition in an exclusion area (closed to scallop fishing) did not differ from surrounding fished areas during the studied period, showing only a higher scallop biomass. ABC curves showed a pattern coincident with a non...
Tipo: Theses and Dissertations Palavras-chave: Zoobenthos; Community composition; Long-term changes; Short-term changes; Species diversity; Fishing grounds; Epibionts; Scallop fisheries; Multivariate analysis; Multivariate analysis; Zoobenthos; Species diversity; Fishing grounds.
Ano: 2005 URL: http://hdl.handle.net/1834/3917
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Atlas thématique de l'environnement marin en baie de Saint-Brieuc (Côtes-d'Armor) ArchiMer
Augris, Claude; Hamon, Dominique.
This atlas presents in a synthetic form the hydrodynamical, geological and biological characteristics of one of the most studied region of the French littoral. Geologic and geophysical data of the Saint-Brieuc Bay show that the deep basement consists of pre-palaeozoic or palaeozoic sedimentary series in the centre of the Bay, whereas metamorphic and magmatic formations are dominant in coastal regions. The location of superficial sediments in the Bay, is mainly due to marine currents. A granulometric gradient, from very fine to coarse sediments, appears in two directions: from the coast towards the high sea, and from the west to the east. Rocky substrates disrupt the sediment distribution, with, most of the time, a concentration of coarse sediments near the...
Tipo: Text Palavras-chave: Atlas; Bathymetry; Bottom topography; Commercial species; Geomorphology; Hydrodynamics; Marine resources; Sediment analysis; Sedimentary basins; Zoobenthos.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00031/14246/11527.pdf
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Communautés zooplanctoniques de la lagune de Grand-Lahou (Cote d'Ivoire). OceanDocs
Kouassi, A.M.; N'doua, E.; Adingra, A.A..
Le peuplement zooplanctoniques de la lagune de Grand-Lahou inventorié de janvier à décembre 2004 est riche de 65 taxons regroupés en 4 groupes (Copépodes, Rotifères, Cladocères et un groupe de divers organismes zooplanctoniques) et 3 communautés (continentale, lagunaire et marine).
Tipo: Journal Contribution Palavras-chave: Zoobenthos; Zooplankton.
Ano: 2008 URL: http://hdl.handle.net/1834/5744
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Distribución batimétrica, espacial y temporal del macrozoobentos en el Canal Beagle, Tierra del Fuego, Argentina OceanDocs
Diez, M..
El Canal Beagle (Tierra del Fuego, Argentina) se encuentra en el sistema de canales fueguinos que representa el ambiente marino subantártico costero más estrechamente relacionado con la Antártida. Además, el Canal Beagle constituye una vía de intercambio de fauna y flora ente los océanos Pacífico y Atlántico. El objetivo de este trabajo fue determinar la composición, abundancia y biomasa del macrozoobentos en el Canal Beagle como también la producción secundaria de los ensambles bentónicos. Durante 1999 y 2000, en forma estacional, en tres áreas diferentes y en dos rangos de profundidad: 40m y 70m, se tomaron muestras del macrozoobentos mediante el uso de una rastra epibentónica. Los organismos se identificaron y cada taxón se contó y pesó para determinar...
Tipo: Theses and Dissertations Palavras-chave: Zoobenthos; Seasonal distribution; Abundance; Biomass; Secondary production; Marine environment; Biomass; Marine environment; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 2006 URL: http://hdl.handle.net/1834/3545
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Distribución de los poliquetos bentónicos en el Golfo de Guayaquil OceanDocs
Villamar, F..
El propósito de este trabajo es mostrar la distribución de cada una de las especies identificadas y relacionarlas con la granulometría de los sedimentos y profundidades.
Tipo: Journal Contribution Palavras-chave: Zoobenthos; Distribution records; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 1986 URL: http://hdl.handle.net/1834/2110
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Distribución zoogeográfica de los géneros Cibicides sp., y Quinqueloculina sp., (Foraminíferos) de la zona de turbulencia de Monteverde, Ecuador durante noviembre 2007 OceanDocs
Gualancañay, E..
En el área de Monteverde se ha estudiado por primera vez a los foraminíferos bentónicos de la zona de turbulencia hasta los 20 metros de profundidad, caracterizada por la gran agitación de sus aguas debido a los oleajes y se ha encontrado en todas estaciones a las especies Cibicides bertheloti, f. bouena, Cibicides floridanus, Quinqueloculina lamarckiana y Quinqueloculina granulosa que pertenecen a la provincia zoogeográfica Panamena propuesta por Boltovskoy (1965), Boltovskoy y Gualancañay (1975), Boltovskoy (1976), and Gualancañay (1986).
Tipo: Journal Contribution Palavras-chave: Biogeography; Foraminifera; Zoobenthos; Geographical distribution; Geographical distribution; Biogeography; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_915; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 2007 URL: http://hdl.handle.net/1834/2350
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Diversidad, densidad y biomasa de la macrofauna componente de los fondos de pesca 'camaron-langostino', frente a Mar del Plata, Argentina (1998-1999) OceanDocs
Scelzo, M.A.; Martínez Arca, J.; Lucero, N.M..
The seasonal variation of diversity, density and biomass of the main species of the bentho-demersal fauna present in the 'prawn-shrimp' fishing grounds in the coastal sector between Cabo Corrientes and Torreon del Monje, Mar del Plata (38 degree S-57 degree W), Argentina, was studied. The quali-quantitative information obtained allowed to know the fluctuations of the bentho-demersal components of the community. The study included the annual cycle between April 1998-April 1999. Monthly samples at different depths (4-10 m) and distance from the coast (500 and 1,000 m) were obtained in two stations using a bottom net. Sampling in each station lasted 15 minutes and covered 2,400 m super(2). Number of specimens and weight for each species were recorded....
Tipo: Journal Contribution Palavras-chave: Zoobenthos; Fishing grounds; Biomass; Abundance; Littoral zone; Species diversity; By catch; Biomass; Zoobenthos; Fishing grounds; Species diversity; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_15487; Http://aims.fao.org/aos/agrovoc/c_2947; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 2002 URL: http://hdl.handle.net/1834/1700
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Dosage des carotenoides de la macrofaune benthique par spectrometrie d'adsorption visible ArchiMer
Merlin, J; Noel, Philippe; Lafageoe-szydlowski, S; Petitt-cossi, G; Wallart, F.
The resonance Raman spectrometry allows the determination carotenoid composition. This method has many advantages in particular to analyse a non-purified solution without measuring the other constituents. The application of this technique is used for benthic macrofauna studies.
Tipo: Text Palavras-chave: Comparative studies; Absorption spectroscopy; Zoobenthos; Carotenoids.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1307.pdf
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Especies de moluscos y grupos de invertebrados marinos intermareales más comunes de las Islas Galápagos, durante el tercer crucero insular del B/I Orion, marzo del 2001 OceanDocs
Cruz, M..
Con este aporte al mejor conocimiento de los invertebrados marinos intermareales en 10 islas se pretende ir completando la base de datos de bentos marino de Galápagos.
Tipo: Journal Contribution Palavras-chave: Marine molluscs; Biodiversity; Cruises; Marine invertebrates; Zoobenthos; Oceanic islands; Biodiversity; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_33949; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 2002 URL: http://hdl.handle.net/1834/2263
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Estudio de los poliquetos bentónicos en el Golfo de Guayaquil, exterior (Canal del Morro y Jambelí) OceanDocs
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
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Estudio de los poliquetos bentónicos y fauna acompañante en la zona intermareal y submareal de la Bahía de Santa Elena (Ecuador) durante el año 2007 OceanDocs
Villamar, F..
Se presentan los resultados obtenidos del estudio de los poliquetos de la Bahía de Santa Elena en la zona intermareal rocosa y arenosa del Puerto de Salinas (Yacht Club), Puerto Lucía, Santa Rosa, Terminal Petrolero de la Superintendencia de La Libertad y el área de Ballenita. Del total de poliquetos identificados la especie Pareurythoe spirocirrata es la más frecuente del área estudiada y representan el 9% del total de poliquetos, prefiere vivir en la zona rocosa del área de Santa Rosa y Puerto Lucía. Del análisis de la fauna bentónica de la zona submareal del área de la Bahía de Santa Elena, se identificaron 13 especies de poliquetos bentónicos siendo la especie Capetilla sp. la más abundante (10%), seguido por la especie Sabella sp. (8%), Paraonis sp....
Tipo: Journal Contribution Palavras-chave: Zoobenthos; Species diversity; Ecological zonation; Aquatic communities; Ecological zonation; Aquatic communities; Zoobenthos; Species diversity; Http://aims.fao.org/aos/agrovoc/c_2465; Http://aims.fao.org/aos/agrovoc/c_553; Http://aims.fao.org/aos/agrovoc/c_15487; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 2009 URL: http://hdl.handle.net/1834/3362
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Estudios bionómicos del bentos de la plataforma bonaerense y su relación con el resto de la plataforma continental argentina. OceanDocs
Roux, A..
The macrobenthic assemblages of the Buenos Aires Province(Argentina) continental shelf were studied from samples collected by the R/V Capitán Cánepa and R/V Capitán Oca Balda along a transect from38 m to 218 m depth. Three faunistic areas were determined,corresponding to the coastal, central and external shelf, inhabited by species originated from the Argentine and/or Magellanic Zoogeographical Provinces. These results confirm the presence of different ecological areas in the Argentine continental shelf. Mussel (Mytilus edulis platensis) beds, red porgy (Sparus pagrus) fishing ground and the Argentine-Uruguayan Common Fishing Zone (CFZ) demersal fishing grounds at the continental shelf of Buenos Aires Province were also analyzed to increase the knowledge...
Tipo: Theses and Dissertations Palavras-chave: Zoobenthos; Fishery surveys; Exclusive economic zone; Ecological associations; Dominant species; Stomach content; Fishing grounds; Dominant species; Zoobenthos; Ecological associations; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_2362; Http://aims.fao.org/aos/agrovoc/c_15487; Http://aims.fao.org/aos/agrovoc/c_32845; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1996 URL: http://hdl.handle.net/1834/1489
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Golfe Normano-Breton - Carte biomorphosédimentaire de la zone intertidale au 1/25 000 ArchiMer
Guillaumont, Brigitte; Hamon, Dominique; Piriou, Jean-yves; Lafond, L.r.; Le Rhun, J.; Levasseur, J..
Ce document, réalisé sous l'égide de l'IFREMER avec la collaboration du Laboratoire de Géomorphologie de l'Ecole Pratique des Hautes Etudes de Dinard et le Laboratoire Botanique de l'Université de Rennes 1, constitue la synthèse des travaux réalisés par le groupe "Estrans et Zones humides" dans le cadre de l'Etude Régionale Intégrée du Golfe Normano-Breton. Il se présente sous la forme d'une cartographie biomorphosédimentaire (7 cartes au 1/25 000) de la zone intertidale de la Côte Ouest du Cotentin et de la Baie du Mont Saint-Michel, complétée par une notice explicitant la légende des cartes et présentant les principaux ensembles biosédimentaires observés sur le littoral du golfe.
Tipo: Text Palavras-chave: Cartographie; Estran; Zones humides; Géologie; Morphologie; Sédimentologie; Zoobenthos; Phytobenthos; Végétation phanérogamique; Golfe Normano-Breton; Ouest Cotentin; Baie du Mont Saint-Michel.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/00047/15851/13270.pdf
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Guía técnica para la identificación de invertebrados epibentónicos asociados a los bancos de vieira patagónica (Zygochlamys patagonica)en el Mar Argentino OceanDocs
Bremec, C.; Marecos, A.; Schejter, L.; Lasta, M.L..
Technical guide to identify epibenthic invertebrates associated to Patagonian scallop (Zygochlamys patagonica)beds in the Argentine Sea, SW Atlantic. A catalogue of the invertebrate species that conform the by-catch of the Patagonian scallop fishery is presented and a descriptive technical note with basic information on the organisms considered is included.
Tipo: Book Palavras-chave: Marine invertebrates; Zoobenthos; Taxonomy; Vernacular names; By catch; Check lists; Scallop fisheries; Taxonomy; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 2003 URL: http://hdl.handle.net/1834/2478
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Influence of stability and fragmentation of a worm-reef on benthic macrofauna ArchiMer
Godet, Laurent; Fournier, Jerome; Jaffre, Mikael; Desroy, Nicolas.
In coastal areas, reef-builder worms often are bio-engineers by structuring their physical and biological environment. Many studies showed that this engineering role is determined by the densities of the engineer species itself, the highest densities approximately corresponding to the most stable areas from a sedimentological point of view, and hosting the richest and the most diverse benthic fauna. Here, we tested the potential influence of the spatio-temporal dynamics and the spatial fragmentation of one of the largest European intertidal reefs generated by the marine worm Lanice conchilega (Pallas, 1766) (Annelida, Polychaeta) on the associated benthic macrofauna. We demonstrated that the worm densities do have a significant positive role on the...
Tipo: Text Palavras-chave: Reefs; Zoobenthos; Stability; Fragmentation; Tidal flats; Bay of the Mont-Saint-Michel.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00044/15560/12973.pdf
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Initial results of the benthic fauna studies in the northern Lake Victoria OceanDocs
Mbahinzireki, G.B..
The paper presents initial results of relative abundance, composition and distribution of benthic organisms in an ecologically and environmentally changing northern Lake Victoria. The results suggest that the density of most of the zoobenthos has gone up since the pre-perch era despite the absence of comparative data. Increases in densities were noted for dipteran larvae followed by Caridina nilotica, ostracods, oligochaetes, molluscs and nymphs of Anisoptera and Ephemeroptera, in that order. Possible reasons to account for the increase are advanced. Inshore stations held higher densities than the offshore station. Type of the sediment and physico-chemical factors seem to influence the production and distribution of...
Tipo: Proceedings Paper Palavras-chave: Zoobenthos; Population density; Caridina nilotica; Diptera; Community composition Ecological distribution Freshwater fish Benthic fauna.
Ano: 1994 URL: http://hdl.handle.net/1834/1351
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Lista de la fauna sublitoral bentónica del Estero Salado inferior, Ecuador OceanDocs
Cruz, M.; Cornejo de González, M.; Gualancañay, E.; Villamar, F..
En la presente investigación casi todas las estaciones tuvieron diferentes tipos de sedimentos y unas difrentes comunidades de animales. Por esta razón es obvio que esta lista de especies es justamente un comienzo, ya que cientos de muestras debían de ser tomadas y analizadas para hacer una lista completa de la fauna del Estero Salado.
Tipo: Journal Contribution Palavras-chave: Zoobenthos; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 1980 URL: http://hdl.handle.net/1834/2103
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Long-term changes and coastal eutrophication. Examples from the Aland Islands and the Archipelago Sea, northern Baltic Sea ArchiMer
Bonsdorff, E; Blomqvist, Em; Mattila, J; Norkko, A.
The coastal and archipelago waters of the northern Baltic Sea are influenced by increasing eutrophication (significantly increasing temporal trends in nutrient availability). Increased nutrient levels and pelagic primary production have led to decreased transparency in the water body, increased plankton biomass, and increased amounts of filamentous algae. Large-scale and long-term (15-30 years) comparisons have shown that zoobenthic communities have changed significantly (altered species diversity, increased total abundance and increased biomass). The stress in the ecosystem is also illustrated at the population level (Macoma balthica). An increasing trend is shown for a near-shore fish community, where the increase in biomass has been linear over the past...
Tipo: Text Palavras-chave: Baltic Sea; Eutrophication; Long-term changes; Nutrient; Zoobenthos.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00093/20402/18069.pdf
Registros recuperados: 33
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