## Ecological MethodologyEcological Methodology, Second Edition provides a balance of material on animal and plant populations, and teaches students of ecology how to design efficient tests in order to obtain maximum precision with minimal work. |

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Page 109

Box 3.5 gives an example of these

Probability Proportional to Size This method can be used on equal-size sampling

units or unequal-size units. Each stratum is divided into sampling units of any

size or ...

Box 3.5 gives an example of these

**calculations**. Method 3 — Sampling withProbability Proportional to Size This method can be used on equal-size sampling

units or unequal-size units. Each stratum is divided into sampling units of any

size or ...

Page 132

The goodness-of-fit test follows directly from these

form: , ^ (Observed - expected)2 .. , . , ,. X2 = 2 i ^ 7 (d.f. = no. of classes - 1)

Expected The only problem is to make sure to combine classes in the tails of the

...

The goodness-of-fit test follows directly from these

**calculations**and is of the usualform: , ^ (Observed - expected)2 .. , . , ,. X2 = 2 i ^ 7 (d.f. = no. of classes - 1)

Expected The only problem is to make sure to combine classes in the tails of the

...

Page 399

Box 1 1.4 illustrates these

RANK provided by Johnson (1980) (Appendix 1 1.3) does these

.4.7 Rodgers' Index for Cafeteria Experiments In cafeteria experiments an ...

Box 1 1.4 illustrates these

**calculations**of the rank preference index, and ProgramRANK provided by Johnson (1980) (Appendix 1 1.3) does these

**calculations**. 1 1.4.7 Rodgers' Index for Cafeteria Experiments In cafeteria experiments an ...

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

### Common terms and phrases

abundance aerial analysis aphids Appendix assumptions bias calculations capture Caughley Chapter clumped coefficient of variation confidence interval confidence limits defined density estimate distance ecological ecologists END-OF-FILE equal catchability equation estimate of population estimate population example Figure finite population FORMAT 2X,'ENTER formula frequency distribution index of dispersion level of precision line transect mark-recapture marked animals Morisita nearest neighbor negative binomial distribution niche breadth niche overlap normal distribution null hypothesis Number of animals Number of individuals number of quadrats number of samples number of species observed obtained parameters Petersen plot Poisson distribution population density population estimate probability problem Program proportion quadrat counts random points random sampling ratio READ regression resource sample size sample sizes sampling unit Seber second sample sequential sampling simple random sampling spatial pattern standard error statistical statistical population stratum study area survival rate Table techniques Total number transformation unmarked variable variance voles