农作物使用结构 非洲大象在人类主导的景观中的资源选择策略
Nathan R Hahn1,2, Jake Wall1,3, Kristen Deninger-Snyder1,4
1Department of Fish, Wildlife, and Conservation Biology Colorado State University Fort Collins Colorado USA.
Ecology and evolution
|June 26, 2024
概括
非洲大象表现出各种各样的资源选择策略,受个人行为和景观碎片化的影响. 了解这些差异是管理农业地区人象冲突的关键.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 野生动物行为 野生动物行为
背景情况:
- 保护广泛的物种需要了解对景观修改的行为反应.
- 人类与野生动物之间的冲突,特别是与非洲大象 (Loxodonta africana) 的冲突,因农业侵占而加剧.
- 野生动物行为的个体变化对于人类主导的景观的有效保护至关重要.
研究的目的:
- 研究农作物掠夺和景观结构如何影响非洲大象在塞伦盖蒂-马拉生态系统的空间使用和资源选择.
- 量化象个体资源选择策略中相似性的驱动因素.
- 为人类和大象冲突缓解和共存战略提供信息.
主要方法:
- 分析了56头非洲大象的GPS跟踪数据.
- 应用资源选择函数 (RSF) 来建模大象的空间使用.
- 利用随机森林模型和近距离分析来识别个人资源选择模式的驱动因素.
主要成果:
- 在资源选择策略中观察到显著的个体间差异.
- 干旱季的作物使用,个体重复性和在未受保护地区的时间与类似的资源选择模式相关.
- 大象的作物选择行为随着农业碎片化而变化:在低碎片化中选择远离保护区的作物,在高碎片化中选择更近的作物.
结论:
- 个人行为差异和景观结构显著影响大象对农业区的使用.
- 保护战略必须包括行为可塑性,以促进人类与野生动物的共存.
- 了解大象对农业景观的反应对于缓解人大象冲突至关重要.
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