The poisson-inverse gaussian disiribuiion as a model for species abundance |
| |
| Authors: | J. Keith Ord G. Alex Whitmore |
| |
| Affiliation: | 1. Division of Management Science , Pennsylvania State University University Park , Pennsylvania, 16802;2. Faculty of Management , McGill University , Montreal, Canada, H3A 1G5 |
| |
| Abstract: | ![]()
An inverse Gaussian mixture of Poisson distributions(the P-IG distribution) is considered as a model for species abundance data,, Minimum chi-square and maximum likelihood methods of estimation for the zero-truncated P-IG distribution are developed, Ihe performance of the P-IG distribution is illustrated and discussed for several well-known sets of insect abundance data. |
| |
| Keywords: | Poisson inverse Gaussian mixture distribution species abundance maximum likelihood minimum ohi-squars |
|
|
