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The effect of oxidized material on the vertical distribution of freshwater benthic fauna
Author(s) -
KIRCHNER W. B.
Publication year - 1975
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1975.tb00145.x
Subject(s) - cyclopoida , chironomidae , benthic zone , fauna , oligochaeta (plant) , harpacticoida , biomass (ecology) , ecology , biology , distribution (mathematics) , invertebrate , lumbricidae , crustacean , copepod , larva , earthworm , mathematical analysis , mathematics
Summary The vertical distribution of representatives of the benthic groups: Ostracoda, Nematoda, Oligochaeta, Harpacticoida, Cyclopoida, and Chironomidae was determined. All groups had their highest numbers and biomass in the first 2 cm. The downward extent of oxidized material affected the distribution by dispersing the biomass more as seen by the deeper occurrence of groups when the oxidized material increased. Both the nematodes and oligochaetes were found to inhabit the first reduced layer when the oxidized material was less than normal.