预测有针对性地拆除围对迁徙生态系统中连接性的影响
Imogen A Schwandner1,2,3, Thomas A Morrison1, J Grant C Hopcraft1
1School of Biodiversity, One Health and Veterinary Medicine, University of Glasgow, Glasgow, UK.
概括
有针对性的拆除可以显著改善野生动物的连接. 在大马赛马拉生态系统中,战略性地移除15-140公里的围,增加了39-54%的白胡子野鼠 (Connochaetes taurinus) 运动.
科学领域:
- 野生动物生态学野生动物生态学
- 保护科学 保护科学
- 景观连接 景观连接
背景情况:
- 围是缓解人野生动物冲突的常见工具,但对野生动物造成重大负面影响,包括息地碎片化和限制移动.
- 数百万公里的围在全球范围内分裂了风景,并阻碍了野生动物,需要有效的缓解策略.
研究的目的:
- 开发一种定量方法,优先移除围,以恢复肯尼亚大马赛马拉生态系统中白胡子野鼠 (Connochaetes taurinus) 的迁徙连接.
- 找出最佳位置和走廊宽度来拆除围,以最大限度地提高连接效率并最大限度地降低成本.
主要方法:
- 利用GPS跟踪数据和细度围数据来评估的历史和当代景观连接性.
- 开发了一个预测模型来模拟各种拆除场景的连接改进.
- 评估了不同走廊宽度和位置对连接收益和干预成本的影响.
主要成果:
- 适度的围拆除 (15-140公里) 导致鹿的连接性得到了大幅度改善 (39-54%).
- 确定战略位置的狭窄走廊比恢复连接的更大规模干预更具成本效益.
- 证明有针对性的除可以显著提高野生动物的移动和息地连接性.
结论:
- 一个新的定量框架有效地确定了拆除围的优先地点,以恢复野生动物迁徙走廊.
- 战略性和具有成本效益的拆除可以显著改善像白胡子野牛这样的物种的景观连接.
- 开发的方法可以转移到其他面临类似挑战的地区,这些地区面临着影响野生动物移动的线性障碍.
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