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首页> 外文期刊>Journal of Wildlife Management >Home range and habitat selection of northern bobwhite coveys in an agricultural landscape
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Home range and habitat selection of northern bobwhite coveys in an agricultural landscape

机译：农业景观中北白腹牛的家园范围和栖息地选择

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Northern bobwhites thrive in fine-grained landscapes with a diversity of early succession woodland, grassland, and agriculture-associated habitat types. Bobwhite conservation has proved challenging in the increasingly coarse-grained Midwestern landscape as simplified agricultural cropping systems are implemented at larger spatial scales. Regardless, managing agricultural landscapes on private lands is the primary opportunity to restore bobwhite populations in the Midwestern United States. Although bobwhite habitat requirements are well understood, habitat selection in contemporary Midwestern landscapes is not well understood, especially on private lands where populations are declining. We used compositional analysis to investigate second- (study area) and third- (home range) order habitat selection by radiomarked bobwhite coveys on 4 private land study areas in southwestern Ohio. Mean covey home range size was 26.1 +/- 2.2ha (n=48). Although home ranges were established in areas with more grassland cover, bobwhites most strongly selected early succession woody habitat (e.g., fencerows and ditches) at all scales, and selection for grassland diminished between the study area and home range scales. Grassland selection varied among sites and was strongest on sites with more row crop area. Woodlots were avoided at the study area scale, but were selected within home ranges. Grassland cover, like that provided by contemporary conservation programs, is an essential component of bobwhite habitat in the Midwest, but our results suggest more emphasis should be placed on early succession woody cover. Woody cover associated with fencerows, ditches, and woodlots adjacent to food sources and breeding habitat will likely improve non-breeding season survival, which is an influential vital rate in northern populations. (C) 2012 The Wildlife Society.
机译：北部短毛猫在细密的景观中壮成长，拥有各种早期演替的林地，草原和与农业相关的栖息地类型。随着越来越大的空间尺度上实施简化的农业种植系统，在日益粗糙的中西部地区，鲍勃怀特（Bobwhite）保护业已被证明具有挑战性。无论如何，管理私有土地上的农业景观是恢复美国中西部勃白种群的主要机会。尽管对短白对栖息地的要求很了解，但对当代中西部地区的栖息地选择却知之甚少，尤其是在人口减少的私人土地上。我们使用成分分析方法，通过在俄亥俄州西南部的4个私人土地研究区域上通过放射性标记的鲍勃·怀特（Bobwhite Covey）选择了第二（研究区域）和第三（家庭范围）栖息地选择。平均柯维家园范围为26.1 +/- 2.2ha（n = 48）。尽管在草地覆盖率更高的地区建立了家园范围，但bobwhites在所有规模上最优先选择早期演替木本生境（例如篱笆和沟渠），并且在研究区域和家园范围之间减少了对草地的选择。草地选择因地点而异，并且在种植面积更大的地点上最强。在研究区域范围内避免使用林地，但应在家庭范围内进行选择。像现代保护计划所提供的那样，草原覆盖是中西部鲍勃白色栖息地的重要组成部分，但我们的研究结果表明，应更加重视早期演替的木质覆盖。与食物来源和繁殖栖息地相邻的篱笆，沟渠和林地相关的木质覆盖物可能会提高非繁殖季节的生存率，这对北方人口来说是至关重要的生命率。 （C）2012野生动物协会。

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