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Rachel A Reeb^1,2, Sara E Kuebbing^1,3

¹Department of Biological Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.

|October 7, 2024

概括

现象学分离允许侵入性植物通过减少竞争而共存. 季节性优先效应和间接促进有助于减轻入侵物种之间的负面相互作用,解释它们的同时发生.

科学领域:

生态生态学生态生态学
侵袭生物学侵袭生物学
植物生态学植物生态学

背景情况:

尽管有竞争优势,但非原生入侵植物物种经常共存,这在入侵生物学中构成了悖论.
诸如季节性优先效应和间接促进等机制可能会减轻主导入侵者之间的负面相互作用.
现象分离,一个潜在的驱动器的同时发生,尚未经过实验测试.

研究的目的:

实验测试现象学分离对三种同时存在的入侵植物物种间直接和间接相互作用的影响.
调查季节性优先效应和间接促进如何影响入侵植物的同时出现.

主要方法:

进行了一项温室实验,使用了三个具有明显自然现象的入侵植物物种:Ficaria verna (早春),Alliaria petiolata (中春) 和Microstegium vimineum (夏末).
现象学经过实验同步和操纵,以评估直接的双向和间接的相互作用.
该研究评估了现象学分离对竞争结果和物种相互作用的影响.

主要成果:

实验同步的现象学导致了入侵物种之间强烈的,不对称的负面相互作用,阻碍了共同发生.
增加的现象学分离产生季节性优先效应,减少竞争对早期现象学物种的影响.
第三种物种的存在带来了间接的促进作用,平衡了较弱竞争对手之间的竞争.

结论:

现象学分离是调节季节优先效应和在入侵植物网络中间接促进的关键因素.
这些机制共同促进了在某些生态环境中多种入侵物种的同时出现.
进一步的研究应该在复杂的环境和各种侵入性植物中探索这些动态.

关键词:

竞争竞争竞争竞争竞争竞争间接促进的间接促进.侵入性物种是一种入侵性物种.现象学 (phenology) 是一种现象学.优先级影响影响优先级影响河岸森林是河岸森林中的一个.种类的相互作用物种的相互作用

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