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
... ratio experiments . We can illustrate the utility of this graph with an example . Suppose you are planning a change - in - ratio experiment for a deer population and you expect a change in the sex ratio by at least 0.30 over the hunting ...
... ratio experiments . We can illustrate the utility of this graph with an example . Suppose you are planning a change - in - ratio experiment for a deer population and you expect a change in the sex ratio by at least 0.30 over the hunting ...
Page 205
... Ratio Ratios are not as commonly used in ecological work as they are in taxonomy , but sometimes ecologists wish to estimate from a simple random sample a ratio of two variables , both of which vary from sampling unit to sampling unit ...
... Ratio Ratios are not as commonly used in ecological work as they are in taxonomy , but sometimes ecologists wish to estimate from a simple random sample a ratio of two variables , both of which vary from sampling unit to sampling unit ...
Page 207
... ratio R f = Sampling fraction = n / N n = Sample size y = Observed mean of Y measurement ( denominator of ratio ) and the summation terms are the usual ones defined in Appendix 1.1 . The estimation of confidence intervals for ratios ...
... ratio R f = Sampling fraction = n / N n = Sample size y = Observed mean of Y measurement ( denominator of ratio ) and the summation terms are the usual ones defined in Appendix 1.1 . The estimation of confidence intervals for ratios ...
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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