GRASSLAND BIRD USE OF RIPARIAN FILTER STRIPS IN SOUTHEAST IOWA
| Autor: | John C. Henningsen, Louis B. Best |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
geography
Sparrow geography.geographical_feature_category Ecology biology Filter strip biology.organism_classification Yellowthroat Grassland Agronomy biology.animal Agelaius General Earth and Planetary Sciences Conservation Reserve Program Melospiza Ecology Evolution Behavior and Systematics Nature and Landscape Conservation General Environmental Science Riparian zone |
| Zdroj: | Journal of Wildlife Management. 69:198-210 |
| ISSN: | 1937-2817 0022-541X |
| Popis: | The U.S. Department of Agriculture (USDA) under its Continuous Enrollment Conservation Reserve Program (CRP) has actively promoted establishment of conservation buffers. Although these programs are intended to benefit wildlife in addition to protecting soil and water resources, benefits to grassland birds may be compromised by narrow widths, presence of woody vegetation, and high predation pressure. During 2001 and 2002, we surveyed breeding grassland birds and searched for nests in 33 CRP filter strips that varied in planting mixture (cool-season vs. warm-season grasses) and adjacent edge type (non-wooded vs. wooded). The most abundant species in filter strips were red-winged blackbird (Agelaius phoeniceus), dickcissel (Spiza americana), song sparrow (Melospiza melodia), and common yellowthroat (Geothlypis trichas). Relative abundances of birds and nests were similar between cool-season and warm-season planting mixtures. Dickcissels and red-winged blackbirds and their nests were relatively less ... |
| Databáze: | OpenAIRE |
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