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植被影响狼的细度息地选择和移动速度在一个砍伐的沿海雨林
David P Gregovich1, Gretchen H Roffler2, Christina M Prokopenko3
1Alaska Department of Fish and Game, Division of Wildlife Conservation, 802 3rdStreet, Douglas, AK, 99824, USA. dave.gregovich@alaska.gov.
Oecologia
|February 27, 2025
概括
阿拉斯加的狼在阿拉斯加.
科学领域:
- 野生动物生态生态学
- 林业科学 林业科学
- 保护生物学 保护生物学
背景情况:
- 植被结构显著影响野生动物息地使用和移动模式.
- 了解狼 (Canis lupus) 息地选择对于有效的森林管理和保护战略至关重要.
- 人类对植被的修改,如伐木,可以改变息地适合捕食者和他们的猎物.
研究的目的:
- 为了研究狼在沿海温带雨林中的细度息地选择和运动模式.
- 为了确定狼的行为如何与不同的连续阶段的伐木森林 (年轻与老),植被覆盖 (LiDAR衍生) 和接近道路的关系.
- 通过评估植被结构对狼生态的影响,为森林管理实践提供信息.
主要方法:
- 综合步骤选择分析 (iSSA) 用于分析狼的移动数据.
- 息地选择与分类变量 (伐木站的年龄) 和连续变量 (LiDAR衍生的树冠和底层覆盖) 相比进行了检查.
- 还评估了距离道路对狼息地选择和迁移的影响.
主要成果:
- 在种群层面上,狼选择了森林树冠和低木覆盖率较低的地区.
- 狼们更喜欢在砍伐的森林中生长的低木植被.
- 植物覆盖的持续测量提供了比广泛的陆地覆盖类别更好的细度狼的选择解释.
- 单独的狼对被砍伐的地区,低木密度和接近道路的情况表现出不同的反应.
- 在较古老的伐木地区和较少地下植被地区,移动率更高,这表明人们更喜欢更开放的息地.
结论:
- 开放的植被,特别是在最近砍伐的地区,是狼的青,并促进他们的行动.
- 随着森林继承的进展,开放植被对狼的移动的积极影响可能是暂时的.
- 狼的细度息地选择受到植被结构和景观特征的复杂相互作用的影响,存在个体变异.
- 森林管理策略应考虑细尺度的植被结构和伐木面积的连续阶段,以支持狼群.
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