Roe John H, Wild Kristoffer H, Lunn Zachary R
Department of Biology, University of North Carolina, Pembroke, North Carolina 28372, USA.
Herpetol Conserv Biol. 2018 Dec;13(3):711-725. Epub 2018 Dec 16.
Habitat selection, where observed use of a resource is disproportionate to availability, is an important behavior allowing individuals to position themselves spatially relative to critical resources in heterogeneous environments. For species that experience variable environments across broad geographic ranges, we expect resource selection templates to vary among populations accordingly. Using radiotelemetry, we examined habitat selection for populations of Eastern Box Turtles, , in fire-maintained forests of the sandhills compared to nearby unburned coastal plain forests in south-central North Carolina. Turtles at the fire-maintained sandhills site preferred bottomland habitats and areas near steams, whereas turtles in the unburned coastal plain environment preferred uplands and used streams randomly. In addition, turtles in the fire-maintained sandhills avoided Longleaf Pine and more strongly preferred hardwood and non-Longleaf Pine forests compared to turtles at the unburned coastal plain site. Body size, but not sex, was also an important source of variation in habitat selection within populations, with smaller turtles more strongly preferring areas near water. Selection of habitat structural components in the immediate area of locations did not differ between sites, sexes, or body sizes. These results highlight the variety of resource selection templates in , underscoring a potential need for population- or region-specific conservation and management strategies.
栖息地选择是指观察到的对某种资源的利用与其可获得性不成比例,这是一种重要的行为,能使个体在异质环境中相对于关键资源在空间上定位自己。对于在广泛地理范围内经历环境变化的物种,我们预计资源选择模板会因种群而异。我们使用无线电遥测技术,研究了北卡罗来纳州中南部沙丘地区由火灾维持的森林中东部箱龟种群的栖息地选择情况,并与附近未燃烧的沿海平原森林进行了比较。火灾维持的沙丘地区的乌龟更喜欢低洼栖息地和溪流附近的区域,而未燃烧的沿海平原环境中的乌龟更喜欢高地,并且随机使用溪流。此外,与未燃烧的沿海平原地区的乌龟相比,火灾维持的沙丘地区的乌龟避开长叶松,更喜欢硬木和非长叶松森林。体型而非性别也是种群内栖息地选择差异的一个重要来源,体型较小的乌龟更喜欢靠近水的区域。各地点、性别或体型之间,在位置附近区域对栖息地结构成分的选择没有差异。这些结果突出了东部箱龟资源选择模板的多样性,强调了针对特定种群或地区的保护和管理策略的潜在必要性。