测试草原恢复中的可预测性等级在环境严重程度的梯度上
Diana Bertuol-Garcia1, Emma Ladouceur2,3,4, Lars A Brudvig5
1School of Environmental Studies, University of Victoria, Victoria, British Columbia, Canada.
Ecological applications : a publication of the Ecological Society of America
|September 30, 2023
概括
生态恢复的成功是不可预测的. 这项研究发现,预测占主导地位的物种组成比预测美国草原的物种多样性或功能特征更可靠. 持续监测和积极管理是有效恢复的关键.
科学领域:
- 生态恢复 生态恢复
- 社区生态学社区生态学
- 牧场科学 牧场科学
背景情况:
- 生态恢复旨在恢复退化的生态系统,但成功往往是可变和不可预测的.
- 了解恢复结果的可预测性对于提高效率至关重要.
- 现有的理论表明,可预测性遵循从粗到精细的社区属性的层次结构.
研究的目的:
- 为了测试草原恢复中的"可预测性层次"假设.
- 为了确定哪些恢复结果在干旱度梯度中是最可预测的.
- 评估环境条件和恢复特征对可预测性的影响.
主要方法:
- 综合了来自美国11个草原恢复项目的数据.
- 从52个地点的227次修复治疗中利用了1829个植被地块.
- 应用了通用的线性混合效应模型来预测恢复结果,并使用差异解释和模型余量评估可预测性.
主要成果:
- 可预测性假设的层次结构没有得到一致的支持.
- 在不同的社区属性中,可预测性有所不同;占主导地位的物种组成比物种丰富或功能特征更可预测.
- 随着干旱,可预测性并没有持续增加;一些结果在干旱地区更容易预测,而另一些则不那么容易.
- 与占主导地位的物种相关的恢复结果比涉及稀有物种的恢复结果更容易预测.
结论:
- 恢复的可预测性是复杂的,并且受到最初理论之外的因素的影响,包括所考虑物种的规模 (主导与罕见).
- 社区结构和组成的可预测性不是严格的等级.
- 调查结果强调了持续监测和适应性管理对于草原成功恢复的重要性,而不是仅仅依赖初始播种.
关键词:
干旱性 干旱性 是一种干旱性.社区组成 社区组成生态恢复恢复生态恢复功能组成 功能组成草原 草原 草原 草原 草原物理结构 结构 物理结构恢复的结果.恢复工作取得成功.丰富的财富,丰富的财富.更多相关视频
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