Short-term response of deposit-feeders to an increase of the nutritive value of the sediment through seasons in an intertidal mudflat (Western Mediterranean, Italy)
作者： Francesca Rossi
DOI: 10.1016/S0022-0981(03)00052-2
关键词: Detritivore 、 Abundance (ecology) 、 Biology 、 Capitella capitata 、 Intertidal zone 、 Ecology 、 Detritus 、 Capitata 、 Sediment 、 Capitella
摘要: Abstract In coastal intertidal flats, assemblages of deposit-feeders often vary seasonally and according to the availability food in sediments. mudflat where this study has been done, deposit-feeder assemblage changed after a sharp increase fresh detritus, which occurred summer 1997. The number animals increased abundances some worms ( Streblospio shrubsolii , Desdemona ornata Capitella cf. capitata ) were correlated with nutritive value sediment. addition, there was evidence that increasing would recruitment juveniles adults S. . paper, concentration manipulated situ sediments an different seasons. Food high added small plots test hypotheses about effects on distribution deposit-feeders. It predicted addition change composition abundance densities food. Furthermore, it tested whether affected by consistently through Densities sediment organically enriched. assemblage, however, not affected. D. C. responded However, dynamics these variably Abundances experimental treatment E winter spring for D autumn C more abundant added.
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