Transcription of Estimating species richness - UVM
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OUP CORRECTED PROOF FINAL, 18/10/2010, SPi CHAPTER 4. Estimating species richness Nicholas J. Gotelli and Robert K. Colwell Introduction studies continue to ignore some of the fundamental sampling and measurement problems that can com- Measuring species richness is an essential objec- promise the accurate estimation of species richness tive for many community ecologists and conserva- (Gotelli & Colwell 2001). tion biologists. The number of species in a local In this chapter we review the basic statisti- assemblage is an intuitive and natural index of cal issues involved with species richness estima- community structure, and patterns of species rich- tion.
beyond the scope of this chapter, we highlight sam-pling models for species richness that account for undersampling bias by adjusting or controlling for differences in the number of individuals and the number of samples collected (rarefaction) as well as models that use abundance or incidence distribu-tions to estimate the number of undetected ...
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