Impacts of Oil and Gas Development on Wintering Grassland Birds at Padre Island National Seashore, Texas
| Autor: | Ardath L. Lawson, Michael L. Morrison, R. Douglas Slack |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Southeastern Naturalist. 10:303-320 |
| ISSN: | 1938-5412 1528-7092 |
| DOI: | 10.1656/058.010.0210 |
| Popis: | Padre Island National Seashore provides important habitat for declining wintering grassland birds, yet oil and gas development is widespread in the Park. Our objective was to evaluate the effects of resource extraction on the wintering grassland birds of the Park. In January—March 2007 and 2008, we surveyed 5 active and 4 abandoned well sites and 4 road sites to investigate the relationship between distance from disturbance (well pads, access roads) and bird abundance. At road sites, bird abundance was positively correlated with increased distance from road edge, but we found no linear relationship at active or abandoned well sites. However, mean bird abundance in the first (0–30 m) distance interval of active well transects was less than half that at the second interval, and was the lowest value for all active intervals except the ninth. First-interval abundance at active wells was lower than abundance at any abandoned well interval. Road transects likewise showed low abundance in the initial in... |
| Databáze: | OpenAIRE |
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