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Changes in the Trophic Structure of Benthic Macroinvertebrate Communities Associated with Food Availability and Stream Flow Variations
Author(s) -
Basaguren A.,
Elosegul A.,
Pozo J.
Publication year - 1996
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19960810109
Subject(s) - periphyton , trophic level , benthic zone , environmental science , ecology , biomass (ecology) , autotroph , community structure , invertebrate , river ecosystem , ecosystem , biology , genetics , bacteria
Macroinvertebrate communities were studied in relation to food (particulate organic matter and periphyton) availability and hydrologic regime in two reaches (autotrophic and heterotrophic) of the Agüera stream (Northern Spain). The structure of macroinvertebrate community reflected the trophic characteristics (main food sources) at each site. From a temporal point of view, both food availability and hydrologic regime seem to be the main factors that determine the dynamics and structure of the community. In the autotrophic reach, shredder density showed significant relationship with CPOM, and scrapers with periphyton both in terms of density and biomass.