在一个连续森林中比较本地植物和入侵植物的长期传播模式
Matthew H Yamamoto1,2, Chad C Jones3
1Connecticut College, New London, CT, 06320, USA. myamamoto@calbg.org.
Oecologia
|May 17, 2024
概括
侵袭性植物和本地植物在森林中传播方式相似,主要差异很少. 侵入性物种的殖民化与土壤酸盐和开放的初始土地覆盖相比,与本地物种的殖民化更为密切相关.
科学领域:
- 生态生态学 生态生态学
- 植物学 植物学
- 环境科学 环境科学
背景情况:
- 了解入侵植物与本地植物的生态作用至关重要.
- 之前的研究集中在功能性质上,但影响传播的因素不太了解.
- 假设表明入侵者殖民更广的地点,分散更远,或更喜欢更高的光/营养.
研究的目的:
- 为了比较影响同时出现的入侵植物和本地植物物种传播的因素.
- 为了测试入侵物比本地生物具有更广泛的耐受性或更好的分散性的假设.
- 确定影响入侵植物和本地植物殖民的关键地点变量.
主要方法:
- 检查了康涅狄格州再生森林70年的植物传播模式.
- 对比了七种入侵物种和19种本地物种的殖民特征.
- 网站变量 (光线,土壤营养素,土地覆盖) 对于殖民的评估重要性.
主要成果:
- 对于侵入性物种分散更远或具有比本地物种更广泛的站点容忍度的支持很少.
- 侵入性和本地物种在封闭的树冠和物种丰富的森林中表现出类似的殖民.
- 土壤酸盐和最初的开放田地土地覆盖率显著增加了入侵物种的殖民几率,比本地人更多.
结论:
- 与原生植物相比,侵入性植物的传播并不是主要由更广泛的分散或更广泛的地点容忍驱动的.
- 类似的因素在很大程度上影响了入侵植物和本地植物的传播.
- 侵入性物种的殖民更容易受到土壤酸盐的可用性和初始开放土地覆盖的影响.
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