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首页> 外文期刊>Journal of the American Water Resources Association >FEATURED COLLECTION INTRODUCTION: CONNECTIVITY OF STREAMS AND WETLANDS TO DOWNSTREAM WATERS
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FEATURED COLLECTION INTRODUCTION: CONNECTIVITY OF STREAMS AND WETLANDS TO DOWNSTREAM WATERS

机译：特色介绍：流域和湿地与下游水域的连通性

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摘要

Connectivity is a fundamental but highly dynamic property of watersheds. Variability in the types and degrees of aquatic ecosystem connectivity presents challenges for researchers and managers seeking to accurately quantify its effects on critical hydrologic, biogeochemical, and biological processes. However, protecting natural gradients of connectivity is key to protecting the range of ecosystem services that aquatic ecosystems provide. In this featured collection, we review the available evidence on connections and functions by which streams and wetlands affect the integrity of downstream waters such as large rivers, lakes, reservoirs, and estuaries. The reviews in this collection focus on the types of waters whose protections under the U.S. Clean Water Act have been called into question by U.S. Supreme Court cases. We synthesize 40+ years of research on longitudinal, lateral, and vertical fluxes of energy, material, and biota between aquatic ecosystems included within the Act's frame of reference. Many questions about the roles of streams and wetlands in sustaining downstream water integrity can be answered from currently available literature, and emerging research is rapidly closing data gaps with exciting new insights into aquatic connectivity and function at local, watershed, and regional scales. Synthesis of foundational and emerging research is needed to support science-based efforts to provide safe, reliable sources of fresh water for present and future generations.
机译：连接性是流域的基本但高度动态的属性。水生生态系统连通性的类型和程度的变化为寻求准确量化其对关键水文，生物地球化学和生物过程影响的研究人员和管理人员提出了挑战。但是，保护连接的自然梯度是保护水生生态系统提供的生态系统服务范围的关键。在此精选收藏中，我们回顾了有关河流和湿地影响下游水域（如大河，湖泊，水库和河口）完整性的联系和功能的可用证据。本系列中的评论着重于美国最高法院的案例质疑根据《美国清洁水法》获得保护的水的类型。我们综合了40多年的研究，涵盖了该法案参考框架内的水生生态系统之间的能量，物质和生物群的纵向，横向和垂直通量。关于河流和湿地在维持下游水域完整性中的作用的许多问题可以从当前可获得的文献中得到解答，新兴的研究正在以令人振奋的新见解迅速填补数据缺口，这些见解包括在地方，流域和区域范围内的水生连通性和功能。需要综合基础研究和新兴研究，以支持基于科学的努力，为今世后代提供安全，可靠的淡水来源。

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