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Abstract
We evaluated a habitat suitability (HSI) model developed for mallards (Anas platyrhynchos) wintering in the Lower Mississippi Valley by comparing mallard densities obtained from aerial surveys with habitat suitability indices derived from satellite imagery for 25, 256km2 sampling units. Regression models that related mallard densities to habitat suitability indices accounted for only 29% of the variability in the data and the 95% confidence interval of predicted mallard densities included zero for most habitat suitability indices evaluated. Thus, we conclude that the published HSI model is a poor predictor of wintering mallard density in the Lower Mississippi Valley. We suggest model revision to allow users to remotely obtain model inputs for habitat characteristics at landscape scales. Further, we suggest the model be revised to consider yearly variation in habitat and flood conditions that better reflect the ability of an area to support wintering mallards.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Evaluation of a mallard HSI model for the Lower Mississippi Valley |
| Series title | Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies |
| Volume | 51 |
| Year Published | 1997 |
| Language | English |
| Publisher | Southeastern Association of Fish and Wildlife Agencies |
| Contributing office(s) | National Wetlands Research Center, Patuxent Wildlife Research Center, Wetland and Aquatic Research Center |
| Description | 10 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | Proceedings of the Fifty-first Annual Conference Southeastern Association of Fish and Wildlife Agencies |
| First page | 319 |
| Last page | 328 |
| Conference Title | Fifty-first Annual Conference: Southeastern Association of Fish and Wildlife Agencies |
| Conference Location | Oklahoma City, Oklahoma |
| Conference Date | October 4-8, 1997 |
| Country | United States |
| State | Arkansas, Louisiana, Mississippi |
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