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dc.contributor.authorMenéndez López, Margarita-
dc.contributor.authorComín, F. A. (Francisco A.)-
dc.description.abstractGammarus aequicauda and Sphaeroma hookeri are the most abundant macroinvertebrates on Ruppia cirrhosa (1275 and 1290 individuals.m-2) and Potamogeton pectinatus (140 and 680 individuals. m-2) in Tancada lagoon, a Mediterranean coastal lagoon in the Ebro Delta (NE Spain). Consumption and assimilation efficiencies were calculated from bell jar experiments. Gammarus grazing effects are higher than Sphaeroma on both Ruppia cirrhosa and Potamogeton pectinatus. Green Ruppia leaves lost 0.3 mg per mg Gammarus per day, while Potamogeton leaves lost 0.2 mg per mg Gammarus per day. Decomposing Ruppia leaves lost 0.35-0.54 mg per mg Gammarus per day. Losses of weight by both Ruppia and Potamogeton due to Sphaeroma feeding were less than half those by Gammarus. Assimilation efficiencies are higher for Gammarus (44-78% feeding on Ruppia 2% feeding on Potamogeton) than for Sphaeroma (26-48%) feeding on Ruppia). These assimilation efficiencies were higher than those reported by other authors working at higher latitudes perhaps because of the higher temperature under which the experiments were carried out.-
dc.format.extent6 p.-
dc.publisherConsejo Superior de Investigaciones Científicas (CSIC)-
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofScientia Marina, 1990, vol. 54, num. 2, p. 139-144-
dc.rightscc-by-nc (c) Consejo Superior de Investigaciones Científicas (CSIC), 1990-
dc.sourceArticles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)-
dc.subject.classificationInvertebrats d'aigua dolça-
dc.subject.classificationEbre, Delta de l' (Catalunya)-
dc.subject.otherFreshwater invertebrates-
dc.subject.otherEbro River Delta (Catalonia)-
dc.titleConsumption of macrophytes by invertebrates in Tancada lagoon (NE Spain)-
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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