Accelerating environmental flows implementation to bend the curve of global freshwater biodiversity loss

IF 4.3 3区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Environmental Reviews Pub Date : 2023-07-06 DOI:10.1139/er-2022-0126
A. Arthington, D. Tickner, M. McClain, M. Acreman, E. Anderson, S. Babu, C. Dickens, A. Horne, Nitin Kaushal, W. Monk, G. O’Brien, J. Olden, J. Opperman, Afua Owusu, N. LeRoy Poff, B. Richter, S. Salinas-Rodríguez, Beauty Shamboko‐Mbale, R. Tharme, S. Yarnell
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Abstract

Environmental flows (e-flows) aim to mitigate the threat of altered hydrological regimes in river systems and connected waterbodies and are an important component of integrated strategies to address multiple threats to freshwater biodiversity. Expanding and accelerating implementation of e-flows can support river conservation and help to restore the biodiversity and resilience of hydrologically altered and water-stressed rivers and connected freshwater ecosystems. While there have been significant developments in e-flows science, assessment and societal acceptance, implementation of e-flows within water resources management has been slower than required and geographically uneven. This review explores critical factors that enable successful e-flows implementation and biodiversity outcomes in particular, drawing on 13 case studies and the literature. It presents e-flows implementation as an adaptive management cycle enabled by 10 factors: legislation and governance, financial and human resourcing, stakeholder engagement and co-production of knowledge, collaborative monitoring of ecological and social-economic outcomes, capacity training and research, exploration of trade-offs among water users, removing or retrofitting water infrastructure to facilitate e-flows and connectivity, and adaptation to climate change. Recognising that there may be barriers and limitations to the full and effective enablement of each factor, the authors have identified corresponding options and generalizable recommendations for actions to overcome prominent constraints, drawing on the case studies and wider literature. The urgency of addressing flow-related freshwater biodiversity loss demands collaborative networks to train and empower a new generation of e-flows practitioners equipped with the latest tools and insights to lead adaptive environmental water management globally. Mainstreaming e-flows within conservation planning, integrated water resource management (IWRM), river restoration strategies and adaptations to climate change, is imperative. The policy drivers and associated funding commitments of the Kunming-Montreal Global Biodiversity Framework offer crucial opportunities to achieve the human benefits contributed by e-flows as nature-based solutions (NBS), such as flood risk management, floodplain fisheries restoration and increased river resilience to climate change.
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加快环境流动的实施,扭转全球淡水生物多样性丧失的曲线
环境流量(e-flow)旨在减轻河流系统和相连水体水文状况改变的威胁,是解决淡水生物多样性多重威胁的综合战略的重要组成部分。扩大和加速实施e-flow可以支持河流保护,并有助于恢复生物多样性和水文变化和缺水河流以及相关淡水生态系统的复原力。虽然在电子流量科学、评估和社会接受方面取得了重大进展,但在水资源管理中实施电子流量的速度比要求的要慢,而且在地理上不均衡。本综述利用13个案例研究和文献,探讨了成功实施电子信息流和生物多样性成果的关键因素。它将电子流量的实施作为一个适应性管理周期,由10个因素推动:立法和治理、财政和人力资源、利益相关者参与和知识的共同生产、生态和社会经济成果的协作监测、能力培训和研究、探索用水户之间的权衡、拆除或改造水基础设施以促进电子流量和连通性,以及适应气候变化。认识到充分有效地实现每个因素可能存在障碍和限制,作者根据案例研究和更广泛的文献,确定了相应的选项和可推广的行动建议,以克服突出的制约因素。解决与流量相关的淡水生物多样性丧失问题的紧迫性要求建立协作网络,培训和授权新一代电子流量从业人员,使他们具备最新的工具和见解,从而在全球范围内领导适应性环境水管理。在保护规划、水资源综合管理(IWRM)、河流恢复战略和气候变化适应中,将电子流量主流化势在必行。《昆明-蒙特利尔全球生物多样性框架》的政策驱动因素和相关的资金承诺为实现电子流量作为基于自然的解决方案(NBS)所带来的人类利益提供了至关重要的机会,例如洪水风险管理、洪泛区渔业恢复和增强河流对气候变化的适应能力。
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来源期刊
Environmental Reviews
Environmental Reviews 环境科学-环境科学
自引率
3.50%
发文量
45
期刊介绍: Published since 1993, Environmental Reviews is a quarterly journal that presents authoritative literature reviews on a wide range of environmental science and associated environmental studies topics, with emphasis on the effects on and response of both natural and manmade ecosystems to anthropogenic stress. The authorship and scope are international, with critical literature reviews submitted and invited on such topics as sustainability, water supply management, climate change, harvesting impacts, acid rain, pesticide use, lake acidification, air and marine pollution, oil and gas development, biological control, food chain biomagnification, rehabilitation of polluted aquatic systems, erosion, forestry, bio-indicators of environmental stress, conservation of biodiversity, and many other environmental issues.
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