Global impacts of invasive species on the tipping points of shallow lakes.
Global impacts of invasive species on the tipping points of shallow lakes.
复制标题
入侵物种对浅湖临界点的全球影响。
DOI：
10.1111/gcb.15893
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发表时间：
2021
影响因子：
11.6
通讯作者：
Reynolds SA
中科院分区：
文献类型：
--
作者：
Reynolds SA
越来越多的人认识到，人类引起的变化可以推动生态系统超越临界点，导致重要生态系统服务的急剧和突然丧失。由于人类活动和气候变化，入侵非本地物种（INNS）正在迅速蔓延，并通过改变非生物条件和重组本地社区来推动生态系统功能的变化。浅水湖泊生态系统特别容易受到INNS的干扰，因为它们可以存在于两种不同的稳定状态：要么是植被丰富的清水，要么是浑浊的、无植被的、以浮游植物为主的水。通过对观察INNS对受体湖泊生态系统影响的研究进行全球Meta分析，我们发现某些INNS驱动了浅水湖泊中控制替代平衡平衡的关键类群和条件的丰度发生重大变化。入侵鱼类和甲壳类动物的影响可能导致生态系统早期崩溃，进入浑浊状态，并推迟生态系统的恢复。入侵性软体动物则表现出相反的效应，可能延缓生态系统的崩溃，促进生态系统的恢复。我们的研究结果表明，INNS可以显着改变生态系统崩溃和恢复的临界点，并不是所有的入侵物种可能会引发系统崩溃。我们的研究结果为被入侵的浅水湖泊生态系统的管理者提供了指导，这些生态系统提供了多种服务，包括卫生，饮用水供应，工业冷却，水产养殖和娱乐资源。此外，我们的方法可以应用于确定其他关键生态系统（如珊瑚礁和海带森林）中表现出替代平衡的关键潜在变化驱动因素。
There is growing acknowledgement that human‐induced change can push ecosystems beyond tipping points, resulting in the dramatic and sudden loss of vital ecosystem services. Invasive non‐native species (INNS) are spreading rapidly due to anthropogenic activities and climate change and can drive changes to ecosystem functioning by altering abiotic conditions and restructuring native communities. Shallow lake ecosystems are especially vulnerable to perturbation from INNS as they can exist in two alternative stable states: either clear water with an abundance of vegetation or turbid, unvegetated and dominated by phytoplankton. Through a global meta‐analysis of studies observing the effects of INNS on recipient lake ecosystems, we found that certain INNS drive significant changes in the abundance of key taxa and conditions that govern the balance of alternative equilibria in shallow lakes. Invasive fish and crustaceans demonstrated effects likely to lead to early ecosystem collapse to a turbid state and delay ecosystem recovery. Invasive molluscs presented opposite effects, which may delay ecosystem collapse and encourage ecosystem recovery. Our results demonstrate that INNS could significantly alter the tipping points of ecosystem collapse and recovery, and that not all invasive species may initiate system collapse. Our results provide guidance for managers of invaded shallow lake ecosystems, which provide diverse services including sanitation, potable water supply, industrial cooling, aquaculture and recreational resources. Moreover, our approach could be applied to identify key potential drivers of change in other crucial ecosystems which demonstrate alternative equilibria, such as coral reefs and kelp forests.