Statistical methods to determine sample size for the estimation of species richness and species' abundances in benthic communities
Schleier, U.; van Bernem, K.H. (1998). Statistical methods to determine sample size for the estimation of species richness and species' abundances in benthic communities. Arch. Fish. Mar. Res. 46(3): 205-233
In: Archive of Fishery and Marine Research = Archiv für Fischerei- und Meeresforschung. Urban & Fisher Verlag: Hamburg. ISSN 0944-1921; e-ISSN 1618-0410, more
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| Authors | | Top |
- Schleier, U.
- van Bernem, K.H.
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| Abstract |
Benthic communities are often sampled by means of sediment cores. The number of subsamples needed to obtain valid results depends, among other things, on the question to be answered, on the desired reliability of the answer, and on the spatial dispersion of the individuals. This paper presents three methods of determining sample size under different assumptions and requirements. Species-area awes give expected numbers of species per sample size. Similarity-area curves show mean similarities between pairs of samples of the same size. A probability-based model gives the minimum number of species found with a predefined probability. Artificial data and data collect ed on a backbarrier tidal flat of the island of Spiekeroog in the North Sea are used to illustrate the procedures and the kinds of results for each method. |
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