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 255
... number of samples . This is clearly undesirable , and hence there has been an attempt to specify closed boundaries for sample size so that there is a maximum sample size at which sampling stops , even if one is still in the zone of ...
... number of samples . This is clearly undesirable , and hence there has been an attempt to specify closed boundaries for sample size so that there is a maximum sample size at which sampling stops , even if one is still in the zone of ...
Page 257
... number of recaptures has been made . Sample size thus becomes a variable . The procedure is to stop the Schnabel ... samples you will need to take from where Expected number of V2NL samples to reach L recaptures 7.4 ECOLOGICAL ...
... number of recaptures has been made . Sample size thus becomes a variable . The procedure is to stop the Schnabel ... samples you will need to take from where Expected number of V2NL samples to reach L recaptures 7.4 ECOLOGICAL ...
Page 258
... number of samples needed V2 ( 2000 ) ( 180 ) 100 = 8.5 samples This is only an approximate guideline to help in designing your sampling study . Chapman's Model This model is more useful in smaller populations but should not be used if a ...
... number of samples needed V2 ( 2000 ) ( 180 ) 100 = 8.5 samples This is only an approximate guideline to help in designing your sampling study . Chapman's Model This model is more useful in smaller populations but should not be used if a ...
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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