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 149
Charles J. Krebs. counts to construct an index of dispersion , the idealized index should have three properties ( Elliott , 1977 ) : 1. It should change in a smooth manner as one moves from maximum unifor- mity to randomness to maximum ...
Charles J. Krebs. counts to construct an index of dispersion , the idealized index should have three properties ( Elliott , 1977 ) : 1. It should change in a smooth manner as one moves from maximum unifor- mity to randomness to maximum ...
Page 150
... index of pattern unless all the data sets being compared have the same sample size and similar population densities . Since these conditions are rarely true , this index of dispersion is not recommended . Green's Coefficient Green ...
... index of pattern unless all the data sets being compared have the same sample size and similar population densities . Since these conditions are rarely true , this index of dispersion is not recommended . Green's Coefficient Green ...
Page 154
... dispersion available for use with distance measures . Eberhardt's Index of Dispersion One index of dispersion that can be used on random- point - to - nearest - organism distances was suggested by Eberhardt ( 1967 ) and analyzed further ...
... dispersion available for use with distance measures . Eberhardt's Index of Dispersion One index of dispersion that can be used on random- point - to - nearest - organism distances was suggested by Eberhardt ( 1967 ) and analyzed further ...
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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