## 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 180

In most cases the

comparison of fish lengths you have d= \ha~ Hb\ = 8 mm s = 9.4 mm (from

previous studies) and you decide you wish a = 0.01 and /3 = 0.05 for a two-tailed

test.

In most cases the

**table**is more convenient. For example, suppose for yourcomparison of fish lengths you have d= \ha~ Hb\ = 8 mm s = 9.4 mm (from

previous studies) and you decide you wish a = 0.01 and /3 = 0.05 for a two-tailed

test.

Page 413

Program CONVERT may be used to do these conversions (Appendix 12.1). 12.2

ESTIMATION FROM LIFE

population can be described succinctly by a life

specific ...

Program CONVERT may be used to do these conversions (Appendix 12.1). 12.2

ESTIMATION FROM LIFE

**TABLES**The mortality schedule operating on apopulation can be described succinctly by a life

**table**. A life**table**is an age-specific ...

Page 416

COLUMNS OF THE LIFE

Age at Death Recorded Directly The number of individuals dying in successive

intervals of ...

**TABLE**12.2 FORMULAS FOR CONVERTING BETWEEN DIFFERENTCOLUMNS OF THE LIFE

**TABLE**n, d, * qx Source: Caughley, 1977a. Method 1 :Age at Death Recorded Directly The number of individuals dying in successive

intervals of ...

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Ecological Methodology Charles J. Krebs,CHARLES L. KREBS,Professor of Zoology Charles J Krebs No preview available - 1999 |

### Common terms and phrases

abundance aerial analysis aphids Appendix assumptions bias calculations capture Caughley Chapter clumped coefficient of variation confidence interval confidence limits defined density estimate distance ecological ecologists END-OF-FILE equal catchability equation estimate of population estimate population example Figure finite population FORMAT 2X,'ENTER formula frequency distribution index of dispersion level of precision line transect mark-recapture marked animals Morisita 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 probability problem Program proportion quadrat counts random points random sampling ratio READ regression resource sample size sample sizes sampling unit Seber second sample sequential sampling simple random sampling spatial pattern standard error statistical statistical population stratum study area survival rate Table techniques Total number transformation unmarked variable variance voles