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 186
Charles J. Krebs. Solving for n , the sample size required is n = tapâ d2 ( 5.8 ) where n = Sample size needed for estimating the proportion p d = Desired margin of error in our estimate and the other parameters are defined above . As a ...
Charles J. Krebs. Solving for n , the sample size required is n = tapâ d2 ( 5.8 ) where n = Sample size needed for estimating the proportion p d = Desired margin of error in our estimate and the other parameters are defined above . As a ...
Page 198
... her two populations of 1.0 embryo or more . What sizes of samples should she take ? What recommendation can you make to her if it is much more difficult to sample from site B than from site A 198 5 / SAMPLE SIZE DETERMINATION.
... her two populations of 1.0 embryo or more . What sizes of samples should she take ? What recommendation can you make to her if it is much more difficult to sample from site B than from site A 198 5 / SAMPLE SIZE DETERMINATION.
Page 387
... sample size . Ricklefs and Lau ( 1980 ) analyzed four indices of niche overlap , as did Linton et al . ( 1981 ) ... sample size ( Figure 11.2 ) . When niche overlap is complete , there is a negative bias in the percentage overlap measure ...
... sample size . Ricklefs and Lau ( 1980 ) analyzed four indices of niche overlap , as did Linton et al . ( 1981 ) ... sample size ( Figure 11.2 ) . When niche overlap is complete , there is a negative bias in the percentage overlap measure ...
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Common terms and phrases
abundance aphids Appendix assumptions bias calculations capture Caughley census zone Chapter chi-square clumped coefficient of variation confidence interval confidence limits defined density estimate distance ecological ecologists END-OF-FILE Enter equal catchability equation estimate of population estimate population example Figure finite population FORMAT 2X formula frequency distribution index of dispersion line transect mark-recapture marked animals method n₁ 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 problem Program proportion quadrat counts random points random sampling ratio READ recaptures regression sample size sample sizes sampling unit Schnabel Seber second sample simple random sampling spatial pattern standard error statistical statistical population stratum study area survival rate Table techniques Total number transformation variable variance