Improving removal-based estimates of abundance by sampling a population of spatially distinct subpopulations
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
A statistical modeling framework is described for estimating the abundances of spatially distinct subpopulations of animals surveyed using removal sampling. To illustrate this framework, hierarchical models are developed using the Poisson and negative-binomial distributions to model variation in abundance among subpopulations and using the beta distribution to model variation in capture probabilities. These models are fitted to the removal counts observed in a survey of a federally endangered fish species. The resulting estimates of abundance have similar or better precision than those computed using the conventional approach of analyzing the removal counts of each subpopulation separately. Extension of the hierarchical models to include spatial covariates of abundance is straightforward and may be used to identify important features of an animal's habitat or to predict the abundance of animals at unsampled locations.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Improving removal-based estimates of abundance by sampling a population of spatially distinct subpopulations |
| Series title | Biometrics |
| DOI | 10.1111/j.1541-0420.2005.00360.x |
| Volume | 61 |
| Year Published | 2005 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Florida Integrated Science Center |
| Description | 9 p. |
| First page | 1093 |
| Last page | 1101 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |