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Design-based and model-based inference in surveys of freshwater mollusks

January 1, 1999

Well-known concepts in statistical inference and sampling theory are used to develop recommendations for planning and analyzing the results of quantitative surveys of freshwater mollusks. Two methods of inference commonly used in survey sampling (design-based and model-based) are described and illustrated using examples relevant in surveys of freshwater mollusks. The particular objectives of a survey and the type of information observed in each unit of sampling can be used to help select the sampling design and the method of inference. For example, the mean density of a sparsely distributed population of mollusks can be estimated with higher precision by using model-based inference or by using design-based inference with adaptive cluster sampling than by using design-based inference with conventional sampling. More experience with quantitative surveys of natural assemblages of freshwater mollusks is needed to determine the actual benefits of different sampling designs and inferential procedures.

Publication Year 1999
Title Design-based and model-based inference in surveys of freshwater mollusks
DOI 10.2307/1468012
Authors R.M. Dorazio
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of the North American Benthological Society
Index ID 70021816
Record Source USGS Publications Warehouse