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Linking Productivity, Biodiversity and Habitat of Benthic Stream Macroinvertebrate Communities: Potential Complications of Worldwide and Regional Patterns
Author(s) -
Statzner Bernhard,
Lévêque Christian
Publication year - 2007
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/iroh.200610983
Subject(s) - benthic zone , productivity , biodiversity , habitat , biomass (ecology) , ecology , environmental science , taxon , invertebrate , geography , biology , macroeconomics , economics
To assess potential complications of links between productivity, biodiversity, and habitat, we assembled published worldwide data on benthic stream macroinvertebrate communities covering (1) annual production (P); (2) annual production/biomass‐rate (P/B); (3) number of taxa contributing to P (BD); (4) mean annual individual weight as a measure of organisms' size (S); and (5) mean annual discharge as a measure of habitat extent (Q), which enabled tests of the six hypothetical allometric relationsP α BD x , P α S x , P α Q x ,andP/B α BD ‐ x , P/B α S ‐ x , P/B α Q ‐ x .The worldwide data provided equivocal support for these hypothetical relations, because the world‐wide patterns were potentially obscured by various complications ( e.g ., continental BD‐gradients, organic pollution, alien species). However, testing the hypothetical relations using less complicated, regional data sets provided scarcely better support for them. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)