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Potential Effects of Highway Mortality and Habitat Fragmentation on a Population of Painted Turtles in Montana.
| 题名： | Potential Effects of Highway Mortality and Habitat Fragmentation on a Population of Painted Turtles in Montana. |
| 作者： | griffin, k. pletscher, d. h. |
| 关键词： | mortality, population dynamics, habitats, montana, natural resources management, traffic volume, highway design, landscaping, roadways, endangered species, transportation planning, safety, surveys |
| 摘要： | Highways and other road systems can present problems to wildlife populations though direct mortality and indirectly by reducing landscape connectivity by creating significant barriers to movement. These impacts can lead to fragmented populations, alteration of animal behavior, lowered population sizes and, thus, lowered population viability for some species. This research examined the potential effects of human-caused fragmentation on a population of western painted turtles (Chrysemys picta bellii) in northwestern Montana. Two studies were conducted: (1) a Capture-Mark-Recapture (CMR) study to examine survival and movement rates and (2) road mortality surveys to examine the number of road kills and the potential affect on the population. Together these studies help to determine the overall affect of the highway on the population and on the landscape level connectivity of the population. / NOTE:Final rept. Jun 02-Sep 06. |
| 总页数： | u0707；79p |
| 报告类型： | 科技报告 |
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