## 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 92

Two general points can be noted by inspecting Figure 3.1, and we can formulate

them as rules of guidance: 1. Ap, the expected change in proportions, is the

critical variable affecting the required sample sizes of change-in-

**ratio**

experiments.

may wish to estimate the wolf/moose

**ratio**for several game-management zones,

or behavioral ecologists may wish to measure the

**ratio**of breeding females to

breeding males in a bird population.

**Ratios**are peculiar statistical variables with

...

13.4.1 Forage

**Ratio**The simplest measure of preference is the forage

**ratio**first

suggested by Savage (1931) and by Williams and Marshall (1938): 0. w = + (

13.21) Pi where w, = Forage

**ratio**for species i (Index 2 of Cock 1978) o, =

Proportion ...

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