Uncertainty in research about key invasion characteristics limits the evaluation of exotic perennial grasses in natural systems in New South Wales, Australia
Uncertainty in research about key invasion characteristics limits the evaluation of exotic perennial grasses in natural systems in New South Wales, Australia
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关键入侵特征研究的不确定性限制了澳大利亚新南威尔士州自然系统中外来多年生草本植物的评估
DOI：
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发表时间：
2021
影响因子：
1.5
通讯作者：
K. French
中科院分区：
文献类型：
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作者：
J. Rayment;K. French
该项目是SoS（拯救我们的物种）项目的一部分，该项目调查了外来多年生草对本地植物群落的入侵。摘要外来多年生禾本科植物（EPG）对全球本土社区构成重大风险。澳大利亚有2,200多个物种，了解哪些特征能够实现高威胁入侵，并比较功能相似的EPG，可以帮助优先考虑物种管理。我们开发了一个风险框架，并使用文献排名21 EPG认为是对新南威尔士州植物群落的威胁，同时也评估了目前可用信息的可靠性。在区分侵袭性的五个大类中对特征进行评分：到达、建立、持续、影响和分布。这些包括生殖生物学、竞争能力和环境耐受性等方面。风险评估在评估入侵的关键特征方面是有效的。具有经济贝内的EPG（权衡物种）更有可能得到可靠的研究，并且由于入侵中重要的特征与农业中被认为重要的特征重叠，因此在自然界中经常被列为高风险入侵者。缺乏正式的科学研究阻碍了对一些物种的评估，一些特征在文献中评估得很差。高度不确定性与建立、持久性和影响的关键特征有关。关键特征的不确定性表明，需要改进由更正式的科学研究验证的非正式研究的整合。这可能会导致在管理原生栖息地的EPG时做出更明智的决策，并有助于早期控制尚未评估的EPG。
The project is part of a SoS (Saving our Species) project investigating the invasion of native plant communities by exotic perennial grasses. Summary Exotic perennial grasses (EPGs) pose a significant risk to native communi- ties globally. With over 2,200 species in Australia, understanding which characteristics enable high threat invasions, and comparing between functionally similar EPGs, can help prioritise species management. We developed a framework of risk and used the literature to rank 21 EPGs considered a threat to plant communities in New South Wales, while also evaluating the reliability of information currently available. Characteristics were scored within five broad categories that distinguish invasiveness: Arrival, Establishment, Persis- tence, Impact and Distribution. These included aspects of reproductive biology, competitive ability and environmental tolerance. The risk assessment was effective in assessing key characteristics of invasion. EPGs with an economic benefit (trade-off species) were more likely to have reliable research and frequently ranked as high-risk invaders in natural habi- tats due to the overlap of characteristics important in invasion with those considered important in agriculture. Lack of formal scientific research hindered assessment for some species, and some traits had been poorly assessed in the literature. High uncertainty was associated with key characteristics for Establishment, Persistence and Impact. Uncertainty in key char- acteristics revealed a need for improved integration of less formal research validated by more formal scientific research. This may lead to more informed decisions in the manage- ment of EPGs in native habitats and assist in early control of EPGs not yet assessed.