Knowledge gaps and opportunities in water-quality drivers of aquatic ecosystem health
Abstract
This report identifies key scientific gaps that limit our ability to predict water quality effects on health of aquatic ecosystems and proposes approaches to address those gaps.Topics considered include (1) coupled nutrient-carbon cycle processes and related ecological-flow-regime drivers of ecosystem health, (2) anthropogenic and geogenic toxin bioexposure, (3) fine sediment drivers of aquatic ecosystem health, and (4) freshwater salinization.Each topic is addressed in terms of scientific gaps, approaches, and timelines to help guide portions of the U.S. Geological Survey Water Mission Area (https://www.usgs.gov/mission-areas/water-resources)research portfolio and other national research efforts.The report provides an assessment of several of the major challenges and opportunities concerning water quality impacts on aquatic ecosystem health.It will be important to maintain broad-based expertise and flexibility to address the full range of long-term water quality issues facing the Nation's water resources.
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