| Abstract: | 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. |
| Genre: | Article |
| ProdID: | 70021816 |
| Citation Author: | Dorazio, R. M. |
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| Citation End Page: | 131 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of the North American Benthological Society |
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| Citation Number Of Pages: | 14 |
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| Citation Search Results Text: | Design-based and model-based inference in surveys of freshwater mollusks; 1999; Article; Journal; Journal of the North American Benthological Society; Dorazio, R. M. |
| Citation Start Page: | 118 |
| Citation Volume: | 18 |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | Design-based and model-based inference in surveys of freshwater mollusks; 1999; Article; Journal; Journal of the North American Benthological Society; Dorazio, R. M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1999 00:00 -0600 |
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