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 378
... measure of niche breadth Maximum possible Shannon measure H ' log n where J ' = Evenness measure of the Shannon - Wiener function n = Total number of possible resource states ( 11.8 ) and the same base of logarithms is used in equations ...
... measure of niche breadth Maximum possible Shannon measure H ' log n where J ' = Evenness measure of the Shannon - Wiener function n = Total number of possible resource states ( 11.8 ) and the same base of logarithms is used in equations ...
Page 379
... measure is much less sensitive to selectivity of rare resources . All niche breadth measures that consider resource ... measure to use in these situations depends on how you wish to weight the differences . One simple measure of overlap ...
... measure is much less sensitive to selectivity of rare resources . All niche breadth measures that consider resource ... measure to use in these situations depends on how you wish to weight the differences . One simple measure of overlap ...
Page 387
... measures of niche overlap are strongly affected by sample size ( Figure 11.2 ) . When niche overlap is complete , there is a negative bias in the percentage overlap measure , and this negative bias is reduced but not eliminated as ...
... measures of niche overlap are strongly affected by sample size ( Figure 11.2 ) . When niche overlap is complete , there is a negative bias in the percentage overlap measure , and this negative bias is reduced but not eliminated as ...
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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