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Don Maurer 《Marine Ecology》1983,4(3):263-274
Abstract. Animal-animal interactions are recognized as critical in benthic invertebrate recruitment. The hypothesis tested was that benthic recruitment is more successful in low densities of infaunal suspension feeders than in high densities. Densities of young hard clams Mercenaria mercenaria (L.) ranging from 82.5 to 330m-2 were placed in defaunated boxes of sand. The mean number of species, mean number of individuals, mean wet weight biomass, mean species richness and mean dominance index per sample were calculated per density of hard clams from May to October. The experiment did not support the hypothesis. It was concluded that feeding behaviour of dense populations of M. mercenaria did not preclude successful recruitment of other benthic species. 相似文献
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We present a mechanical method to horizontally section soft bottom sediment cores to minimize the vertical post-sampling redistribution
of motile infaunal macroinvertebrates. A clear acrylic core tube for a standard Kajak-Brinkhurst corer was modified by cutting
a series of horizontal slits into the side of the core tube to allow the insertion of sectioning plates for physically sealing
each section immediately after core retrieval. The modification is simple, inexpensive and easily adapted to any open barrel
gravity corer. 相似文献
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