Resistance and recovery of soil microbial communities in the face of Alliaria petiolata invasions
Resistance and recovery of soil microbial communities in the face of Alliaria petiolata invasions
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DOI：
10.1111/j.1469-8137.2010.03481.x
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发表时间：
2011-01-01
期刊：
影响因子：
9.4
通讯作者：
Lankau, Richard A.
中科院分区：
文献类型：
--
作者：
Lankau, Richard A.
入侵者可以获得生态优势，因为他们的进化的新奇，但很少有人知道这些新的优势将如何随着时间的推移，入侵者和被入侵的社区演变，以应对对方。在沿着有柄葱（Alliaria petiolata）入侵历史梯度的土壤群落中，微生物丰富度呈下降趋势，但群落对葱的抗性却有所下降。然而，敏感的微生物类群似乎恢复在两个最古老的网站，导致丰富度的增加，但随之而来的阻力下降。这可能是由于A.这些结果表明，随着时间的推移，微生物群落可以对入侵植物产生抗性，但代价是丰富度降低。然而，在较长的时间尺度上，入侵物种的进化可能会使土壤微生物群落恢复。
P>Invaders can gain ecological advantages because of their evolutionary novelty, but little is known about how these novel advantages will change over time as the invader and invaded community evolve in response to each other. Invasive plants often gain such an advantage through alteration of soil microbial communities.In soil communities sampled from sites along a gradient of invasion history with Alliaria petiolata, microbial richness tended to decline, but the community's resistance to A. petiolata's effects generally increased with increasing history of invasion.However, sensitive microbial taxa appeared to recover in the two oldest sites, leading to an increase in richness, but consequent decrease in resistance. This may be because of evolutionary changes in the A. petiolata populations, which tend to reduce their investment to allelopathic compounds over time.These results show that, over time, microbial communities can develop resistance to an invasive plant but at the cost of lower richness. However, over longer time-scales evolution in the invasive species may allow for the recovery of soil microbial communities.