Abstract
The hypothesis that different secondary production estimation methods yield unbiased and equally precise estimates is tested using published data from 66 benthic invertebrate populations from lentic habitats. Tests are performed by Kruskal-Wallis one-way analysis of the residuals of a published empirical equation accounting for the important covariables biomass, body-mass, and water temperature. While no method was found to be significantly biased, the size-frequency method was less precise than the Allen curve, growth increment summation or instantaneous growth methods, yielding estimates about three times farther from the probable production values than other methods. Imprecision of inferred cohort production interval (CPI) is suggested as one source of error.
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More From: Journal of the North American Benthological Society
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