The Effects of Bison Crossings on the Macroinvertebrate Community in a Tallgrass Prairie Stream

The distribution and diversity of macroinvertebrates in relation to bison crossings was studied for four seasons in a headwater reach of a tallgrass prairie stream. Species richness was significantly higher above crossings only during the fall. Summer samples revealed significantly higher EPT (richn...

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Bibliographic Details
Published in:The American midland naturalist 1999-04, Vol.141 (2), p.253-265
Main Authors: Fritz, Ken M, Dodds, Walter K, Pontius, Jeffrey
Format: Article
Language:English
Subjects:
Animal behavior
Animal migration
aquatic invertebrates
Biotic communities
Bison
Contents
Creeks & streams
environmental impact
Grazing
Influence
Invertebrates
Lotic systems
Macroinvertebrates
Population biology
population density
Prairies
Sediments
species diversity
Spring
Streams
Studies
Summer
Tallgrass prairies
Taxa
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Summary:The distribution and diversity of macroinvertebrates in relation to bison crossings was studied for four seasons in a headwater reach of a tallgrass prairie stream. Species richness was significantly higher above crossings only during the fall. Summer samples revealed significantly higher EPT (richness within only Ephemeroptera, Plecoptera and Trichoptera) index values above crossings than at crossings. On average, over 10% more fine sediment (
ISSN:0003-0031
1938-4238
DOI:10.1674/0003-0031(1999)141[0253:TEOBCO]2.0.CO;2