## 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 4

A ruler that has been marked off in the wrong places and is too short may give a

very precise measurement of a fish's length, ... Continuous data are recorded to

some fixed

A ruler that has been marked off in the wrong places and is too short may give a

very precise measurement of a fish's length, ... Continuous data are recorded to

some fixed

**level of precision**, and every measurement has its implied limits: ...Page 174

The desired

be most confusing if they are mixed up. You can define the absolute

±2.8 ...

The desired

**level of precision**can be stated in two different ways, and these canbe most confusing if they are mixed up. You can define the absolute

**level of****precision**desired. For example, you may wish the 95% confidence interval to be±2.8 ...

Page 197

... using (in liters) This empirical relationship can be used to estimate the number

of samples you need to take to achieve a specified

<U78t>-026V2 (5.20) where n = Estimated sample size needed for zooplankton ...

... using (in liters) This empirical relationship can be used to estimate the number

of samples you need to take to achieve a specified

**level of precision**: n = 0.745m-<U78t>-026V2 (5.20) where n = Estimated sample size needed for zooplankton ...

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### Other editions - View all

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