## 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. |

### From inside the book

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Page 379

All

choice of the

you wish ...

All

**niche**breadth measures that consider resource availability estimate the**overlap**between the two frequency distributions of use and availability. Thechoice of the

**niche**breadth measure to use in these situations depends on howyou wish ...

Page 387

11.2.7 Which Overlap Index Is Best? The wide variety of indices available to

estimate

used is relatively unimportant, since they all give the same general result (Pianka

, ...

11.2.7 Which Overlap Index Is Best? The wide variety of indices available to

estimate

**niche overlap**has led many ecologists to argue that the particular indexused is relatively unimportant, since they all give the same general result (Pianka

, ...

Page 406

Some comments on measuring

1978. Measuring preference in selective predation. Ecology 59: 21 1-215. Cock,

M. J. W. 1978. The assessment of preference. /. Anim. Ecol. 47: 805-816. Colwell

...

Some comments on measuring

**niche overlap**. Ecology 61: 44-49. Chesson, J.1978. Measuring preference in selective predation. Ecology 59: 21 1-215. Cock,

M. J. W. 1978. The assessment of preference. /. Anim. Ecol. 47: 805-816. Colwell

...

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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