Relations between fish abundances, summer temperatures, and forest harvest in a northern Minnesota stream system from 1997 to 2007
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Relations between fish abundances, summer temperatures, and forest harvest in a northern Minnesota stream system from 1997 to 2007
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2009
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Abstract
Short-term effects of forest harvest on fish habitat have been
well documented, including sediment inputs, leaf litter reductions, and
stream warming. However, few studies have considered changes in local
climate when examining postlogging changes in fish communities. To
address this need, we examined fish abundances between 1997 and 2007 in
a basin in a northern hardwood forest. Streams in the basin were subjected
to experimental riparian forest harvest in fall 1997. We noted a significant
decrease for fish index of biotic integrity and abundance of Salvelinus
fontinalis and Phoxinus eos over the study period. However, for P. eos and
Culaea inconstans, the temporal patterns in abundances were related more
to summer air temperatures than to fine sediment or spring precipitation
when examined using multiple regressions. Univariate regressions
suggested that summer air temperatures influenced temporal patterns in fish
communities more than fine sediment or spring precipitation.
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Merten, E.C.; Hemstad, N.A.; Eggert, S.L.; Johnson, L.B.; Kolka, R.K.; Newman, R.M.; Vondracek, B.. (2009). Relations between fish abundances, summer temperatures, and forest harvest in a northern Minnesota stream system from 1997 to 2007. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/183594.
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