Non-navigable streams and adjacent wetlands: addressing science needs following the Supreme Court's Rapanos decision
Non-navigable streams and adjacent wetlands: addressing science needs following the Supreme Court's Rapanos decision
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不可通航的溪流和邻近湿地：最高法院拉帕诺斯裁决后解决科学需求
DOI：
10.1890/070068
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发表时间：
2008
影响因子：
10.3
通讯作者：
D. Downing
中科院分区：
文献类型：
--
作者：
S. Leibowitz;P. J. Wigington;M. Rains;D. Downing
2006年6月，美国最高法院就两起涉及《清洁水法》（CWA）管辖权的案件做出了裁决。这些决定表明，不可通航溪流和邻近湿地 (NNSAW) 的水文持久性及其对通航水域化学、物理和生物完整性的影响（“重大联系”）与确定 CWA 管辖权有关。这增加了对科学信息的需求，以支持监管决策并为未来的政策、规则制定和立法提供信息。在这里，我们提出了一种解决这些科学需求的方法。我们定义了一个指标——连续水流的最大持续时间——来评估水文持久性。我们还定义了两个指标来评估重要的关系：NNSAW 类别贡献的通航水域总效益的比例，以及通航水域从 NNSAW 受益的时间比例。这些指标可能有助于实施法院的新法律标准。
In June of 2006, the US Supreme Court ruled in two cases concerning jurisdiction under the Clean Water Act (CWA). The decisions suggest that hydrological permanence of non-navigable streams and adjacent wetlands (NNSAWs) and their effects on the chemical, physical, and biological integrity of navigable waters (“significant nexus”) are relevant in determining CWA jurisdiction. This has increased the need for scientific information to support regulatory determinations and to inform future policies, rule making, and legislation. Here, we propose an approach for addressing these science needs. We define a metric – maximum duration of continuous flow – to assess hydrological permanence. We also define two metrics to evaluate significant nexus: proportion of total benefit to the navigable water contributed by an NNSAW class, and proportion of time that a navigable water receives benefit from an NNSAW. These metrics could be useful in implementing the Court's new legal standards.