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Are plant beds in streams hot spots of macroinvertebrate diversity, abundance and biomass?

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dc.contributor.advisor Stelzer, Robert
dc.contributor.author Shupryt, Michael P.
dc.date.accessioned 2008-10-20T14:45:53Z
dc.date.available 2008-10-20T14:45:53Z
dc.date.issued 2008-05
dc.identifier.uri http://digital.library.wisc.edu/1793/30717
dc.description Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science - Biology en
dc.description.abstract ARE PLANT BEDS IN STREAMS HOT SPOTS OF MACROINVERTEBRATE DIVERSITY, ABUNDANCE AND BIOMASS? By Michael P. Shupryt Macroinvertebrates are known to exhibit habitat preferences for macrophytes in lakes and large rivers where macrophyte beds are abundant. It is less understood if these preferences will hold true in low order streams where macrophyte beds are less abundant and sporadic. I examined the ability of small sporadic macrophyte beds to be hot spots of macroinvertebrate diversity, abundance and biomass in a Central Wisconsin sand plain stream. I sampled eight discrete macrophyte beds and 4 sand\gravel patches monthly from March through October 2007. Overall mean invertebrate diversity (Shannon-Weiner Index), abundance and biomass in the macrophyte beds was significantly greater than in sand\gravel patches (paired t-test p < 0.05). Mean invertebrate diversity in the macrophyte beds had a non-significant time (Repeated Measures ANOVA p=0.057) and a significant bed effect (p<0.05). Although there was a significant difference in mean diversity the difference was small and not a likely indication of a biodiversity hot spot. Mean invertebrate abundance and biomass had significant time (p<0.001) and bed effects (p<0.01). I scaled the results of the summer invertebrate abundance and biomass results using a substrate survey in a 400m stream reach. Although sand\gravel outnumbered macrophytes as a habitat nearly 3:1 they contributed equally to macroinvertebrate abundance and biomass and the whole reach level. I concluded that macrophyte beds were hot spots of macroinvertebrate abundance and biomass. These results show that even when macrophyte beds are isolated and sporadic in small streams they may be major contributors to invertebrate biomass and production at the whole stream level. en
dc.description.provenance Submitted by Ciara Healy (healyc@uwosh.edu) on 2008-10-20T14:45:53Z No. of bitstreams: 1 M Shupryt Thesis.pdf: 1085423 bytes, checksum: 0cb47e05f45dbad04adbb76364f57628 (MD5) en
dc.description.provenance Made available in DSpace on 2008-10-20T14:45:53Z (GMT). No. of bitstreams: 1 M Shupryt Thesis.pdf: 1085423 bytes, checksum: 0cb47e05f45dbad04adbb76364f57628 (MD5) Previous issue date: 2008-05 en
dc.description.sponsorship Project funded in part by the Central Wisconsin Chapter of Trout Unlimited through the Bill Beck Memorial Scholarship. en
dc.language.iso en_US en
dc.subject freshwater invertebrates, ecology. Wisconsin, biological productivity, aquatic plants, stream ecology, biomass en
dc.title Are plant beds in streams hot spots of macroinvertebrate diversity, abundance and biomass? en
dc.type Thesis en

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