Alteration of trophic interactions between periphyton and invertebrates in an acidified stream: a stable carbon isotope study

Abstract

The hypothesis according to which proliferation of periphytic algae under acid conditions results from a release of grazing pressure is tested. Stable carbon isotope analysis is used to investigate the autochthonous/allochthonous balance of invertebrate feeding in streamside artificial channels that were experimentally acidified. We find that the relative… (More)
DOI: 10.1007/BF00007510

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