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| Registros recuperados: 36 | |
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| Загородняя, Ю. Я.; Сергеева, Н. Г.; Болтачёв, А. Р.; Финенко, З. З.; Еремеев, В. Н.; Мильчакова, Н. А.; Гаевская, А. В.; Гришин, А. Н.; Зуев, Г. В.; Шульман, Г. Е.; Миронов, О. Г.. |
| Обобщены результаты ретроспективного анализа всех доступных материалов и собственных многолетних исследований промысловых биоресурсов Чёрного моря. Показано, что в последние годы, по сравнению с концом 80 – первой половиной 90-х годов ХХ столетия состояние ресурсной базы улучшается. Запасы черноморской и азовской хамсы восстанавливаются до уровня 1970-х годов. На уровне выше среднемноголетнего в последнее десятилетие сохраняется запас шпрота. В удовлетворительном состоянии находятся запасы пиленгаса и мерланга. Вызывает тревогу состояние запаса камбалы-калкана, которая находится на грани уничтожения. Выявлены существенные изменения в структуре бентосных биоценозов в результате распространения экологически пластичных моллюсков-вселенцев (Rapana venosa и... |
| Tipo: Journal Contribution |
Palavras-chave: Биоресурсы; Промысловые виды рыб; Макрофиты; Зообентос; Фито- и зоопланктон; Чёрное море; Bioresource; Commercial fish; Macrophytes; Zoobenthos; Phyto- and zooplankton; Black Sea. |
| Ano: 2009 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/1191 |
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| Gallon, Regis K.; Lavesque, Nicolas; Grall, Jacques; Labrune, Celine; Gremare, Antoine; Bachelet, Guy; Blanchet, Hugues; Bonifacio, Paulo; Bouchet, Vincent M. P.; Dauvin, Jean-claude; Desroy, Nicolas; Gentil, Franck; Guerin, Laurent; Houbin, Celine; Jourde, Jerome; Laurand, Sandrine; Le Duff, Michel; Le Garrec, Vincent; De Montaudouin, Xavier; Olivier, Frederic; Orvain, Francis; Sauriau, Pierre-guy; Thiebaut, Eric; Gauthier, Olivier. |
| This study aims to describe the patterns of soft bottom macrozoobenthic richness along French coasts. It is based on a collaborative database developed by the “Réseau des Stations et Observatoires Marins” (RESOMAR). We investigated patterns of species richness in sublittoral soft bottom habitats (EUNIS level 3) at two different spatial scales: 1) seaboards: English Channel, Bay of Biscay and Mediterranean Sea and 2) 0.5° latitudinal and longitudinal grid. Total observed richness, rarefaction curves and three incidence-based richness estimators (Chao2, ICE and Jacknife1) were used to compare soft bottom habitats species richness in each seaboard. Overall, the Mediterranean Sea has the highest richness and despite higher sampling effort, the English Channel... |
| Tipo: Text |
Palavras-chave: Zoobenthos; Species richness; Regional pattern; Latitudinal pattern; Soft-bottom; France. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00376/48769/49166.pdf |
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| Gros, Philippe; Hamon, Dominique. |
| The aim of this report is to provide biomass estimates (AFDW, g.m-2 ) of the four main components of the benthic food web in the southern part of the Bay of St-Brieuc: suspension-feeders, deposit-feeders, herbivores and carnivores. Patterns in the environmental data (i.e., sedimentary characters) are first analysed, and then related to the spatial distribution of communities ; both approaches use classical ordination techniques (PCA, correspondence analysis). A second typology, based on a review of published litterature concerning coastal macrozoobenthos feeding, ascribes each taxonomic unit to a trophic group. Finally, quantitative results are thus given per biota ; suspension-feeders appear to dominate (in terms of biomass) most of fine-sand habitats of... |
| Tipo: Text |
Palavras-chave: Zoobenthos; Réseau trophique; Analyses multivariables; Manche ouest; Zoobenthos; Food web; Multivariate analysis; Western Channel. |
| Ano: 1988 |
URL: http://archimer.ifremer.fr/doc/00107/21794/19371.pdf |
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| Ingels, Jeroen; Vanreusel, Ann; Brandt, Angelika; Catarino, Ana I.; David, Bruno; De Ridder, Chantal; Dubois, Philippe; Gooday, Andrew J.; Martin, Patrick; Pasotti, Francesca; Robert, Henri. |
| Because of the unique conditions that exist around the Antarctic continent, Southern Ocean (SO) ecosystems are very susceptible to the growing impact of global climate change and other anthropogenic influences. Consequently, there is an urgent need to understand how SO marine life will cope with expected future changes in the environment. Studies of Antarctic organisms have shown that individual species and higher taxa display different degrees of sensitivity to environmental shifts, making it difficult to predict overall community or ecosystem responses. This emphasizes the need for an improved understanding of the Antarctic benthic ecosystem response to global climate change using a multitaxon approach with consideration of different levels of biological... |
| Tipo: Text |
Palavras-chave: Amphipoda; Echinoidea; Foraminifera; Global climate change; Isopoda; Nematoda; Southern Ocean; Zoobenthos. |
| Ano: 2012 |
URL: https://archimer.ifremer.fr/doc/00296/40762/39758.pdf |
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| 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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| 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 |
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| 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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| 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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| Okemwa, E.; Wakwabi, E.; Getabu, A.. |
| Topics on Lake Victoria limnology, benthic fauna, stock assessment, catch assessment survey, gear selectivity, fisheries ecology, fish parasites and marketing economics are covered. Management and conservation of the lake's fisheries and other aquatic resources are discussed. Dialogue between fishermen, scientists and administrators is stressed, measures to be undertaken are addressed and further research is recommended. |
| Tipo: Proceedings Paper |
Palavras-chave: Fishery management; Freshwater fish; Inland fisheries; Lake fisheries; Limnology; Resource management; Stock assessment; Zoobenthos; Fishery management; Lake fisheries; Limnology; Stock assessment; Inland fisheries; Resource management; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4159; Http://aims.fao.org/aos/agrovoc/c_4343; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_3873; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_15487. |
| Ano: 1994 |
URL: http://hdl.handle.net/1834/2125 |
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| Registros recuperados: 36 | |
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