## 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 113

Figure 3.14 Schematic view of the method of

zone is the whole area A. One transect is shown of length L, and the width of the

transect is 2 W. The observer, moving along the transect line L, detects an animal

...

Figure 3.14 Schematic view of the method of

**line transect**sampling. The censuszone is the whole area A. One transect is shown of length L, and the width of the

transect is 2 W. The observer, moving along the transect line L, detects an animal

...

Page 121

There are extensive discussions of the practical and statistical problems of

Burnham and Anderson (1984). Several computer programs are available to do ...

There are extensive discussions of the practical and statistical problems of

**line****transect**sampling in Pollock ( 1 978), Gates ( 1 979), Burnham et al. ( 1 980), andBurnham and Anderson (1984). Several computer programs are available to do ...

Page 193

Alternatively, if the perpendicular distances (y,) are used in a

estimator (such as equation 3.34), Eberhardt (1978a) suggests that the

approximate coefficient of variation is CV(Z))«W^ (5.16) which is exactly double

that given above ...

Alternatively, if the perpendicular distances (y,) are used in a

**line transect**estimator (such as equation 3.34), Eberhardt (1978a) suggests that the

approximate coefficient of variation is CV(Z))«W^ (5.16) which is exactly double

that given above ...

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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