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Shredder–collector interactions in temporary streams of western Oregon
Author(s) -
DIETERICH MARTIN,
ANDERSON N.H.,
ANDERSON TRACEY
Publication year - 1997
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 - 10.1046/j.1365-2427.1997.00252.x
Subject(s) - streams , biomass (ecology) , ecology , environmental science , field trial , phenology , field experiment , hydrology (agriculture) , biology , agronomy , geology , computer network , geotechnical engineering , computer science
1. Field data and results from laboratory rearing are combined to describe shredder–collector interactions in western Oregon temporary streams. 2. The composition of functional feeding groups in the temporary streams conforms to that predicted for permanent headwaters by the River Continuum Concept (RCC). 3. A distinct functional feeding group phenology was found, with shredders emerging first and collectors emerging last in the season. Scrapers were intermediate. 4. Presence of shredders enhanced collector growth in laboratory experiments ( P < 0.01; n = 12). The species reared in the study trials accounted for 67% of the shredder biomass and 76% of the collector biomass in the natural systems. 5. Field data and laboratory rearing trials both support the hypothesis of a close shredder–collector interaction in the processing of allochthonous material in the summer‐dry headwaters studied.