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An ASBPA White Paper: Human and ecosystem health in coastal systems
Summary
This white paper synthesizes current understanding of human and ecosystem health dynamics in U.S. coastal systems, covering coastal pollutants including fecal contamination, harmful algal blooms, and microplastics, as well as resilient coastal ecosystem management. The authors call for better integration of nearshore physical processes with pollutant fate and transport modeling to address unprecedented impacts on coastal communities and economies.
U.S. coastal economies and communities are facing an unprec¬edented and growing number of impacts to coastal ecosystems including beach and fishery closures, harmful algal blooms, loss of critical habitat, as well as shoreline damage. This paper synthesizes our present understanding of the dynamics of human and ecosystem health in coastal systems with a focus on the need to better understand nearshore physical process interactions with coastal pollutants and ecosystems (e.g. fate and transport, circulation, depositional environment, climate change). It is organized around two major topical areas and six subtopic areas: 1) Identifying and mitigating coastal pollutants, including fecal pollution, nutrients and harmful algal blooms, and microplastics; and 2) Resilient coastal ecosystems, which focuses on coastal fisheries, shellfish and natural and nature-based features (NNBF). Societal needs and the tools and tech¬nologies needed to address them are discussed for each subtopic. Recommendations for scientific research, observations, com¬munity engagement, and policies aim to help prioritize future research and investments. A better understanding of coastal physical processes and interactions with coastal pollutants and resilient ecosystems (e.g. fate and transport, circulation, depositional environment, climate change) is a critical need. Other research recommendations include the need to quantify potential threats to human and ecosystem health through ac¬curate risk assessments and to quantify the resulting hazard risk reduction of natural and nature-based features; improve pollut¬ant and ecosystem impacts forecasting by integrating frequent and new data points into existing and novel models; collect environmental data to calibrate and validate models to predict future impacts on coastal ecosystems and their evolution due to anthropogenic stressors (land-based pollution, overfishing, coastal development), climate change, and sea level rise; and develop lower cost and rapid response tools to help coastal managers better respond to pollutant and ecosystem threats.