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 233
... equation 6.38 ) you can determine the sample size of the primary units ( n ) by knowing what standard error you desire in the total mean ( equation 6.34 ) from the approximate formula : 2 = S.E. ( 5 ) - √ ( si ) + ( - ) $ 2 M mn ( mm ) ...
... equation 6.38 ) you can determine the sample size of the primary units ( n ) by knowing what standard error you desire in the total mean ( equation 6.34 ) from the approximate formula : 2 = S.E. ( 5 ) - √ ( si ) + ( - ) $ 2 M mn ( mm ) ...
Page 251
... ( equation 7.26 ) ( 7.29 ) L ( p ) = Probability of accepting Ho if true mean is μ ( equation 7.30 ) μ This equation is solved by obtaining pairs of values of μ and L ( p ) from the paired equations : Ah L ( p ) = 1 Ah - Bh - ( for h + 0 ) ...
... ( equation 7.26 ) ( 7.29 ) L ( p ) = Probability of accepting Ho if true mean is μ ( equation 7.30 ) μ This equation is solved by obtaining pairs of values of μ and L ( p ) from the paired equations : Ah L ( p ) = 1 Ah - Bh - ( for h + 0 ) ...
Page 256
... equation ( e.g. , Steel and Torrie , 1960 , p . 338 ; Sokal and Rohlf , 1981 , p . 624 ) . If there is no ... equation ΣΥΜ = αι C2 - a2 / n ( 7.33 ) ( 7.34 ) where Σ Y , Total accumulated count in n quadrats n = a1 , a2 = Slope ...
... equation ( e.g. , Steel and Torrie , 1960 , p . 338 ; Sokal and Rohlf , 1981 , p . 624 ) . If there is no ... equation ΣΥΜ = αι C2 - a2 / n ( 7.33 ) ( 7.34 ) where Σ Y , Total accumulated count in n quadrats n = a1 , a2 = Slope ...
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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