Non‐native species have multiple abundance–impact curves

Non‐native species have multiple abundance–impact curves
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非本地物种具有多种丰度影响曲线

DOI:
10.1002/ece3.6364
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发表时间:
2020
影响因子:
2.6
通讯作者:
Strayer, David L.
Strayer, David L.
中科院分区:
生物学2区
文献类型:
--
作者:
Strayer, David L.

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丰度-影响曲线有助于理解和管理非本地物种的影响。丰度-影响曲线可以有多种形状(例如线性、阈值、S 形),每种形状对于科学理解和管理都有其自身的影响。有时,丰度-影响曲线被视为物种的属性,一个物种只有一条曲线。我认为丰度-影响曲线是由非本地物种及其入侵的生态系统共同决定的,因此一个物种可能有多个丰度-影响曲线。入侵贻贝 Dreissena 的影响模型展示了单个物种如何拥有多个不可互换的丰度影响曲线。就生态系统特征决定丰度-影响曲线而言,基于水平设计(空间-时间替代)的丰度-影响曲线可能会产生误导,应该非常谨慎地使用。对于科学家和管理者来说,在考虑非本地物种的影响时,正确指定丰度-影响曲线非常重要。将注意力从入侵物种转移到被入侵的生态系统,特别是物种与生态系统之间的相互作用,可以提高我们对非本地物种如何影响生态系统的理解,并减少非本地物种种群管理影响的不确定性。
The abundance–impact curve is helpful for understanding and managing the impacts of non‐native species. Abundance–impact curves can have a wide range of shapes (e.g., linear, threshold, sigmoid), each with its own implications for scientific understanding and management. Sometimes, the abundance–impact curve has been viewed as a property of the species, with a single curve for a species. I argue that the abundance–impact curve is determined jointly by a non‐native species and the ecosystem it invades, so that a species may have multiple abundance–impact curves. Models of the impacts of the invasive musselDreissenashow how a single species can have multiple, noninterchangeable abundance–impact curves. To the extent that ecosystem characteristics determine the abundance–impact curve, abundance–impact curves based on horizontal designs (space‐for‐time substitution) may be misleading and should be used with great caution, it at all. It is important for scientists and managers to correctly specify the abundance–impact curve when considering the impacts of non‐native species. Diverting attention from the invading species to the invaded ecosystem, and especially to the interaction between species and ecosystem, could improve our understanding of how non‐native species affect ecosystems and reduce uncertainty around the effects of management of populations of non‐native species.
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