## Ecological MethodologyThis coherent text translates the methods of statisticians into "ecological English" so that students may readily apply these methods to the real world. |

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Results 1-3 of 69

0 = absent; 1 = present. spatially rare species and are not necessarily

numerically rare, since they could be highly clumped. From Heltshe and Forrester

(1983a), the jackknife estimate of the

**number of species**is n S = s + ( - '). (12.3)

where S ...

2.1 Oxx 2 3 4 (12.10) where ax =

**Number of species**in the total catch

represented by one individual 2 g =

**Number of species**represented by two

individuals, and so on The sum of the terms in the series is equal to a log, (1 − x),

which is the ...

s =

**Number of species**in entire sample This is the best available index of

evenness, according to Smith and Wilson (1996) because it is independent of

species richness and is sensitive to both rare and common species in the

community.

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Ecological Methodology Charles J. Krebs,CHARLES L. KREBS,Professor of Zoology Charles J Krebs No preview available - 1999 |