Negative binomial models for abundance estimation of multiple closed populations
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Counts of uniquely identified individuals in a population offer opportunities to estimate abundance. However, for various reasons such counts may be burdened by heterogeneity in the probability of being detected. Theoretical arguments and empirical evidence demonstrate that the negative binomial distribution (NBD) is a useful characterization for counts from biological populations with heterogeneity. We propose a method that focuses on estimating multiple populations by simultaneously using a suite of models derived from the NBD. We used this approach to estimate the number of female grizzly bears (Ursus arctos) with cubs-of-the-year in the Yellowstone ecosystem, for each year, 1986-1998. Akaike's Information Criteria (AIC) indicated that a negative binomial model with a constant level of heterogeneity across all years was best for characterizing the sighting frequencies of female grizzly bears. A lack-of-fit test indicated the model adequately described the collected data. Bootstrap techniques were used to estimate standard errors and 95% confidence intervals. We provide a Monte Carlo technique, which confirms that the Yellowstone ecosystem grizzly bear population increased during the period 1986-1998.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Negative binomial models for abundance estimation of multiple closed populations |
| Series title | Journal of Wildlife Management |
| DOI | 10.2307/3803103 |
| Volume | 65 |
| Issue | 3 |
| Year Published | 2001 |
| Language | English |
| Publisher | Wildlife Society |
| Publisher location | Washington |
| Contributing office(s) | Northern Rocky Mountain Science Center |
| Description | 12 p. |
| First page | 498 |
| Last page | 509 |
| Country | United States |
| State | Idaho, Montana, Wyoming |
| Other Geospatial | Yellowstone National Park |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |