## 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 35

r a o o a. o £ o Cricket Frogs 100 200 300 400 500 Number of frogs previously

marked, Mt (a) 0.2 %,- -*--'" 10 15 20 25 Number of

b) Figure 2.5 Schnabel method of population estimation: (a) cricket frogs; (b) red-

...

r a o o a. o £ o Cricket Frogs 100 200 300 400 500 Number of frogs previously

marked, Mt (a) 0.2 %,- -*--'" 10 15 20 25 Number of

**voles**previously marked, M, (b) Figure 2.5 Schnabel method of population estimation: (a) cricket frogs; (b) red-

...

Page 36

second data set for red-backed

unique interpretation is possible for curvilinear plots, and they signal that one or

more assumptions are violated without telling us which assumption it is or how it

is ...

second data set for red-backed

**voles**which is curvilinear. Unfortunately, nounique interpretation is possible for curvilinear plots, and they signal that one or

more assumptions are violated without telling us which assumption it is or how it

is ...

Page 61

Hayne (1949a) marked and released meadow

the following results: Calculate an appropriate estimate of population size and

justify the reasons for your choice of methods. 2.4. Dunnet ( 1 963) sampled ...

Hayne (1949a) marked and released meadow

**voles**in Michigan over 5 days withthe following results: Calculate an appropriate estimate of population size and

justify the reasons for your choice of methods. 2.4. Dunnet ( 1 963) sampled ...

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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