Using data sets from two separate studies, we assessed within-year variation in aquatic invertebrate communities in 31 seasonally flooded (seasonal) wetlands in aspen (Populus spp.) – dominated forests in north central Minnesota. Principal components analysis (PCA) indicated that, in each case, three axes explained > 55% of variance in aquatic invertebrates, with the first axis strongly correlated with sampling date. Indicator species tests showed that this variation along axis 1 was largely due to shifts in abundance of crustaceans, Diptera and other insects, leeches, and other taxa. Temporal shifts in aquatic invertebrate community structure pose a major obstacle for ecological studies of aquatic invertebrates in seasonal forest wetlands and should receive more attention from investigators planning research in these and perhaps other wetland habitats.
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1 September 2008
Invertebrate Community Variation in Seasonal Forest Wetlands: Implications for Sampling and Analyses
Anthony T. Miller,
Mark A. Hanson,
James O. Church,
Brian Palik,
Shane E. Bowe,
Malcolm G. Butler
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Wetlands
Vol. 28 • No. 3
September 2008
Vol. 28 • No. 3
September 2008
Aquatic invertebrates
indicator species analysis
principal components analysis
seasonal forest wetlands
temporal variability
