Mallard Response to Experimental Walk-In and Shooting Disturbance
| Autor: | Joshua L. Dooley, Paul F. Doherty, Todd A. Sanders |
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| Rok vydání: | 2010 |
| Předmět: |
Anas
Disturbance (geology) Ecology biology biology.organism_classification Aquatic organisms Management strategy Waterfowl General Earth and Planetary Sciences Wildlife management River corridor Ecology Evolution Behavior and Systematics Nature and Landscape Conservation General Environmental Science Demography Flight distance |
| Zdroj: | Journal of Wildlife Management. 74:1815-1824 |
| ISSN: | 1937-2817 0022-541X |
| Popis: | Spatial and temporal closures of anthropogenic activities are a common management strategy to increase waterfowl usage of an area. However, empirical evidence, specifically how individual waterfowl respond to disturbance, is lacking to support their efficacy. We exposed radiomarked mallards (Anas platyrhynchos) to walk-in, shooting, or no disturbance along the South Platte River corridor in Colorado, USA, from September to February during 2006–2007 and 2007–2008. Mallards exposed to shooting disturbance had greater mean flight distance after disturbance (FDAD) during September–November (4.58 km, 95% CI = 3.55–5.62) than December–February (3.04 km, 95% CI = 2.51–3.58) and were 35% and 17% greater than mean FDAD of mallards exposed to walk-in disturbance, respectively. Walk-in and shooting disturbance had a similar effect on return rates, and disturbed mallards had higher (0.09–0.41) movement probabilities away from and lower (0.15–0.20) probabilities of returning to treatment locations than co... |
| Databáze: | OpenAIRE |
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