互动效应对多种物种再引入的长期人口轨迹的影响
Katherine E Moseby1,2, John L Read2,3, Katherine Tuft2
1The University of New South Wales, Sydney, New South Wales, Australia.
概括
对重新引入物种的长期监测显示了种群动态的多样性,大多数物种没有达到调节阶段. 密集,多十年的跟踪对于复杂,干旱的澳大利亚生态系统的适应性管理至关重要.
科学领域:
- 保护生物学 保护生物学
- 野生动物生态生态学
- 人口动态 人口动态
背景情况:
- 重新引入计划通常假设重新引入的种群的建立,增长和调节阶段.
- 密集监测往往不足以验证这些概念人口模型.
- 了解种群轨迹对于有效保护危物种至关重要.
研究的目的:
- 测试23年后重新引入后种群阶段的概念模型.
- 为了比较四种受威胁的澳大利亚有袋动物物种的种群轨迹.
- 研究时间和环境变量对人口动态的影响.
主要方法:
- 在23年间,分析了四种危物种 (大比尔比,挖掘贝通,大棒巢大鼠,鱼湾班迪库特) 的轨道活动数据.
- 人口指数来源于在干旱的澳大利亚多次重新引入后的轨道数据.
- 种类之间比较了种群轨迹,并评估了时间和环境因素 (降雨量,温度) 的影响.
主要成果:
- 所有物种都表现出持续3-16年的初始繁殖和生长阶段,具有显著的物种间变异.
- 种群峰值之后出现下降,灭绝或不规则的波动;三种物种未能达到调节阶段.
- 环境变量影响了轻微的波动,在一些物种中观察到第二个生长阶段,这与资源可用性和物种间相互作用有关.
结论:
- 多种物种的重新引入导致了复杂的种群动态,由于互动效应的高度变化.
- 实现人口调节可能需要数十年,特别是在具有多个物种的不可预测的干旱环境中.
- 密集的长期监测对于评估可行性,实现适应性管理和避免对可预测的发布后阶段的假设至关重要.
关键词:
澳大利亚 澳大利亚 澳大利亚班迪科特 (Bandicoot) 是一个名为班迪科特 (Bandicoot) 的组织.带带剪裁 带带剪裁博彩公司 博彩公司比尔比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比比监控 监控 监控监控 监控 监控 监控 监控 监控在发布后的发布后.拉达拉达是一位建筑师.重定位是指重新定位.粘巢老鼠鼠鼠的树巢.转移转移是指转移的转移.耳袋 耳袋刺鼻巢鼠 刺鼻巢鼠 刺鼻巢鼠放回后面的时间有条纹的袋澳大利亚 澳大利亚监测 监测 监测草原袋鼠 草原袋鼠是什么意思迁移地址 迁移地址
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