## 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 138

Density Estimation The original reason for developing distance measures of the

general sort shown in Figure 4. 1 was to

need to lay out quadrats. We have ventured far from this original goal because of

...

Density Estimation The original reason for developing distance measures of the

general sort shown in Figure 4. 1 was to

**estimate population**density without theneed to lay out quadrats. We have ventured far from this original goal because of

...

Page 162

Given that you can

three times, Pollock et al. (1985b) show how to

. One advantage of this procedure is that the proportion of x-types in the ...

Given that you can

**estimate**the proportion of x-types in the**population**at thesethree times, Pollock et al. (1985b) show how to

**estimate**the initial**population**size. One advantage of this procedure is that the proportion of x-types in the ...

Page 190

5.3 SPECIALIZED ECOLOGICAL VARIABLES Some variables that ecologists

to ...

5.3 SPECIALIZED ECOLOGICAL VARIABLES Some variables that ecologists

**estimate**, like**population**density, are basically continuous variables that are**estimated**in indirect ways. For example, we might use a line transect techniqueto ...

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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