根除侵入性哺乳动物需要在当地消除并减少来自城市源种群的重新入侵
Charlotte R Patterson1, Audrey Lustig2,3, Philip J Seddon1
1Department of Zoology, University of Otago, Dunedin, New Zealand.
概括
彻底消灭入侵性尾虫对于防止在城市消灭区重新繁殖至关重要. 通过结合缓冲区和源种群控制,可以最大限度地降低重新入侵的风险.
科学领域:
- 侵入性物种管理 侵袭性物种管理
- 城市生态学 城市生态学
- 空间建模 空间建模
背景情况:
- 侵袭性哺乳动物灭绝在复杂的景观中面临挑战,特别是在息地异质的城市地区.
- 顺序管理区很容易受到邻近不受控制的种群的重新入侵.
- 城市生态知识的不确定性使根除和重新入侵风险评估复杂化.
研究的目的:
- 使用基于空间代理的模型,预测城市景观中虫的再入侵动态.
- 评估管理策略,以防止对正在进行消除活动的半岛重新入侵.
- 评估城市入侵物种管理中的景观障碍和控制努力的有效性.
主要方法:
- 基于空间代理的模型的开发,包括微量化的城市土地覆盖数据.
- 模拟各种管理场景,操纵残留物种密度,陷密度,缓冲区和源种群控制.
- 对模型预测的分析,以确定影响虫在目标半岛重新繁殖的因素.
主要成果:
- 在半岛上彻底消灭虫对于防止迅速重新繁殖至关重要.
- 城市地峡充当了局部的景观屏障,但单独不足以防止重新入侵.
- 完全消除,缓冲区和源种群控制的组合显著降低了重新定居的概率.
结论:
- 城市景观障碍物可以帮助顺序消除入侵性哺乳动物,但需要补充策略.
- 需要新的方法来有效控制管理区内残留的入侵物种.
- 对入侵性哺乳动物的城市生态的进一步研究对于成功管理至关重要.
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