Causes, Responses, and Implications of Anthropogenic versus Natural Flow Intermittence in River Networks

Causes, Responses, and Implications of Anthropogenic versus Natural Flow Intermittence in River Networks
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河网中人为与自然流量间歇的原因、响应和影响

DOI:
10.1093/biosci/biac098
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发表时间:
2022
期刊:
影响因子:
10.1
通讯作者:
Tonkin, Jonathan D
Tonkin, Jonathan D
中科院分区:
生物学1区
文献类型:
--
作者:
Datry, Thibault;Truchy, Amélie;Olden, Julian D;Busch, Michelle H;Stubbington, Rachel;Dodds, Walter K;Zipper, Sam;Yu, Songyan;Messager, Mathis L;Tonkin, Jonathan D

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常年不流动的河流是地球上最主要的沃茨类型。尽管关于自然水流阻力(NFI)的文献不断涌现,但关于人类引起的、人为的水流阻力(AFI)的水文原因和生态效应的知识仍然有限。NFI和AFI可以在河流中产生对比鲜明的水文和生物反应,因为不同的根本原因的干燥和进化适应的生物群。我们首先回顾AFI的原因,并显示不同的人为驱动程序如何改变干燥的时间,频率和持续时间,与NFI相比。其次,我们评估了NFI和AFI在生物多样性响应、生态功能和生态系统服务方面可能存在的差异。最后,我们概述了知识差距和管理需求相关的AFI。由于AFI的独特水文特征和生态影响,忽视NFI和AFI之间的区别可能会破坏间歇性河流和短暂河流的管理,并加剧下游生态系统和社会的风险。
Rivers that do not flow year-round are the predominant type of running waters on Earth. Despite a burgeoning literature on natural flow intermittence (NFI), knowledge about the hydrological causes and ecological effects of human-induced, anthropogenic flow intermittence (AFI) remains limited. NFI and AFI could generate contrasting hydrological and biological responses in rivers because of distinct underlying causes of drying and evolutionary adaptations of their biota. We first review the causes of AFI and show how different anthropogenic drivers alter the timing, frequency and duration of drying, compared with NFI. Second, we evaluate the possible differences in biodiversity responses, ecological functions, and ecosystem services between NFI and AFI. Last, we outline knowledge gaps and management needs related to AFI. Because of the distinct hydrologic characteristics and ecological impacts of AFI, ignoring the distinction between NFI and AFI could undermine management of intermittent rivers and ephemeral streams and exacerbate risks to the ecosystems and societies downstream.
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