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| Giberto, D.A.. |
| Benthic communities of the Río de la Plata estuary and their trophic link with Micropogonias furnieri, Paralonchurus brasiliensis, Menticirrhus americanus, Cynoscion guatucupa, Macrodon ancylodon and Umbrina canosai, six species of the Sciaenidae Family, were studied. Benthic composition was characterized using 122 sampling sites between 1999 and 2005. Multivariate and univariate statistical tools were used to analyze diversity, abundance and biomass patterns. A total of 370 taxa were found at the study area. Four areas were established using benthic composition: Inner Río de la Plata (RdP), middle RdP, outer RdP and Marine zone. Higher abundance (9,877 ind/m2) and biomass (1,456.8 g/m2) values were found at middle RdP. Nephtys fluviatilis, Heteromastus... |
| Tipo: Theses and Dissertations |
Palavras-chave: Benthos; Estuarine organisms; Brackishwater environment; Feeding behaviour; Food organisms; Trophic levels; Stomach content; Trophic levels; Benthos; Feeding behaviour; Brackishwater environment; Http://aims.fao.org/aos/agrovoc/c_7969; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_1050. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/2952 |
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| Tackx, M.L.M.; Zhu, L.; De Coster, W.; Billones, R.G.; Daro, M.H.. |
| Although estuarine zooplankters are generally believed to be detritivorous, high clearance rates by the estuarine copepods <i>Eurytemora affinis</i> and <i>Acartia tonsa</i> on natural estuarine microplankton have been reported in the literature. In order to enable detection of possible selectivity for these microplankton organisms over detritus, a method that measures clearance rates on total particulate matter is proposed. Image analysis is used to measure copepod gut contents, and combined with Coulter counter measurements of total particulate matter concentration, allows one to calculate clearance rates on the latter. The first results indicate that, in the Westerschelde estuary (SW Netherlands), both <i>E.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Estuarine organisms; Feeding behaviour; Image processing; Selective feeding; Acartia tonsa; Copepoda [copepods]; Eurytemora affinis. |
| Ano: 1995 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2632 |
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