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1 January 2014 The Aquatic Macroinvertebrates of a First Order Colorado, U.S.A. Front Range Stream: What Could the Biodiversity Have Been Before Irrigated Agriculture?
Ralph D. Stoaks, Boris C. Kondratieff
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Abstract

The aquatic macroinvertebrates of Sand Creek, a first order Front Range Colorado stream, were surveyed from March–September 2012 with an additional winter adult collecting trip on 2 March 2013 using both qualitative and quantitative techniques, emphasizing EPT (Ephemeroptera/Plecoptera/Trichoptera) taxa. One hundred and thirty macroinvertebrate taxa were identified from both qualitative samples and quantitative benthic samples. Of these, 53 mayfly/stonefly/caddisfly species were collected from Sand Creek, a remarkable number for such a small Front Range stream. The macroinvertebrate community of Sand Creek is dominated by collector-gatherers (50–76%), collector-filterers (9–33%) and shredders (3–24%), with the other feeding guilds comprising low overall percentages of the community. The collector-gatherer taxa were primarily mayfly taxa, chironomid midges, stratiomyid flies, the elmid genus Optioservus, and oligochaete worms; collector-filterers were primarily net spinning hydropsychid caddisflies; and shredders were primarily nemourid stoneflies. Sand Creek should be protected from cattle grazing which causes degradation of the riparian zone and stream bank integrity.

Kansas Entomological Society
Ralph D. Stoaks and Boris C. Kondratieff "The Aquatic Macroinvertebrates of a First Order Colorado, U.S.A. Front Range Stream: What Could the Biodiversity Have Been Before Irrigated Agriculture?," Journal of the Kansas Entomological Society 87(1), 47-65, (1 January 2014). https://doi.org/10.2317/JKES130623.1
Accepted: 1 September 2013; Published: 1 January 2014
JOURNAL ARTICLE
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