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 161
... sample sizes of change - in - ratio experiments . The rate of ex- ploitation ( u ) is of minor importance , as is the fraction of x - types in the re- movals ( ƒ ) . For Ap less than 0.05 , this method requires enormous sample sizes and ...
... sample sizes of change - in - ratio experiments . The rate of ex- ploitation ( u ) is of minor importance , as is the fraction of x - types in the re- movals ( ƒ ) . For Ap less than 0.05 , this method requires enormous sample sizes and ...
Page 187
... sample size C B 500 A Minimum recommended sample size 2000 4000 6000 8000 10,000 12,000 Population size Figure 5.2 Recommended sample sizes for estimating a " pop- ulation ratio " of two sex or age classes in populations of finite size ...
... sample size C B 500 A Minimum recommended sample size 2000 4000 6000 8000 10,000 12,000 Population size Figure 5.2 Recommended sample sizes for estimating a " pop- ulation ratio " of two sex or age classes in populations of finite size ...
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.
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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