A general approach to modeling and analysis of species abundance data with extra zeros
- Author(s)
- Podlich, HM; Faddy, MJ; Smyth, GK;
- Details
- Publication Year 2002-09,Volume 7,Issue #3,Page 324-334
- Journal Title
- JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS
- Publication Type
- Journal Article
- Abstract
- A general method for the analysis of ecological count data with extra zeros is presented using a Markov birth process representation of discrete distributions. The method uses a nonparametric formulation of the birth process to model the residual variation and therefore allows the data to play a greater role in determining an appropriate distribution. This enables a more critical assessment of covariate effects and more accurate predictions to be made. The approach is also presented as a useful diagnostic tool for suggesting appropriate parametric models or verifying standard models. As an illustrative example, data describing abundance of a species of possum from the montane ash forests of the central highlands of Victoria, southeast Australia, is considered.
- Publisher
- AMER STATISTICAL ASSOC & INTERNATIONAL BIOMETRIC SOC
- Keywords
- POISSON
- Publisher's Version
- https://doi.org/10.1198/108571102221
- Terms of Use/Rights Notice
- Refer to copyright notice on published article.
Creation Date: 2002-09-01 12:00:00