## 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 78

the horizontal axis, i.e., the range of resources used by each species, is merely a

measure of specialization. The number of species in Figure 18 is reduced from ...

**Niche breadth**, here represented by the distance occupied by each species onthe horizontal axis, i.e., the range of resources used by each species, is merely a

measure of specialization. The number of species in Figure 18 is reduced from ...

Page 79

is the participant overlap that sport X faces from Y. (CROyx is the niche overlap

divided by the

when the

of the ...

is the participant overlap that sport X faces from Y. (CROyx is the niche overlap

divided by the

**niche breadth**of X.) Therefore, CROxy will only equal CROyxwhen the

**niche breadth**of X and Y are equal. Table 6–6 shows the calculationsof the ...

Page 528

Dash and Mahanta (1993) studied the

species of Indian amphibians in six different study sites using Levin's and Horn's (

1966) indices for

Dash and Mahanta (1993) studied the

**niche breadth**and niche overlap of tenspecies of Indian amphibians in six different study sites using Levin's and Horn's (

1966) indices for

**niche breadth**and niche overlap respectively. 12.6.1 Niche ...### What people are saying - Write a review

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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