Streaming Fish Sampling: Abundance versus Biomass Measurements and Determining a Minimum Number of years to Sample
作者： Sarah B. Vied
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摘要: Abundance and biomass are commonly used for estimating stream fish assemblage community structure, yet questions arise whether one measurement contains more information about an how long sampling should be. Principal component loadings derived from measurements taken Buck Creek in Allen County Kentucky were statistically compared to corresponding measures of abundance test significant differences the two data sets. A sliding window analysis based on was determine minimum number years a be sampled. not found significantly different; correlations first three among sets highly significant. six-year consecutive estimate total result eight-year study through subsampling data, however, this thought as standard use all studies. INDEX WORDS: Abundance, Biomass, Stream sampling, Long-term Sliding window, PCA Copyright by Sarah B. Vied 2009 STREAM FISH SAMPLING: ABUNDANCE VERSUS BIOMASS MEASUREMENTS AND DETERMINING MINIMUM NUMBER OF YEARS TO SAMPLE
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