在美国威斯康星州重新引入的种群中,鹿息地选择的规模依赖性
Jennifer L Merems1, Anna L Brose1, Jennifer Price Tack2
1Department of Forest and Wildlife Ecology, College of Agriculture and Life Sciences University of Wisconsin-Madison Madison Wisconsin USA.
Ecology and evolution
|October 3, 2024
概括
威斯康星州的鹿 (Cervus canadensis) 根据季节和规模选择息地,避免危险地区,寻找料. 了解这些依赖规模的决策是管理重新引入种群的关键.
科学领域:
- 生态生态学 生态生态学
- 野生动物管理 野生动物管理
- 保护生物学 保护生物学
背景情况:
- 息地选择对于物种的生存至关重要,涉及复杂的,规模依赖的决策.
- 鹿 (Cervus canadensis) 种群在北美东部灭绝,现在正在重新引入.
- 了解重新引入的种群的息地选择至关重要,特别是在环境变化有限的地区.
研究的目的:
- 研究威斯康星州北部重新引入的非迁徙种群中的依赖规模的息地选择.
- 确定地形,海拔,植被和危险特征等因素如何影响不同空间和时间尺度上的鱼息地选择.
主要方法:
- 利用资源选择功能分析了2017年至2020年间79只成年的数据.
- 检查了跨季节和日期的息地选择,以及在景观和家庭范围的空间尺度.
- 评估选择相对于逃生掩护,狼区中心,道路和植被树冠覆盖.
主要成果:
- 鹿的息地选择在空间和时间尺度上有显著的变化.
- 鹿更喜欢靠近逃生掩护的地区,并且远离危险的特征,如狼区和道路.
- 在春季分娩季节观察到更强烈的避开狼群领土中心.
- 鹿始终选择了树冠覆盖较少的息地,这表明它们更喜欢有更多料可用性和太阳辐射的地区.
结论:
- 鹿的息地选择是一个由风险因素和土地覆盖类型影响的等级过程,根据季节和空间尺度而异.
- 规模依赖的行为对于理解和管理重新引入的鹿种群及其长期动态至关重要.
- 研究结果提供了对鹿复杂决策过程的见解,并为类似的重新引入种群的保护策略提供了信息.
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