Towards a conceptual approach for assessing risks from chemical mixtures and other stressors to coastal ecosystem services

Growth of human populations and increased human activity, particularly in coastal areas, increase pressure on coastal ecosystems and the ecosystem services (ES) they provide. As a means toward being able to assess impact of multiple stressors on ES the authors propose a seven-step conceptual approach for assessing effects of chemical mixtures and other stressors on ES in coastal areas: A: Identify the relevant problem(s) and policy aims B: identify temporal and spatial boundaries; C: identify relevant ES; D: identify relevant stressors (e.g. chemicals; E: translate impacts into ES units; F: assess cumulative risk in ES units; G: Rank stressors based on their contribution to adverse effects on ES; and H: implement regulation and management as appropriate and necessary. Two illustrative case studies (Swedish coastal waters and a coastal lagoon in Costa Rica) are provided, one that focuses on chemicals affecting human food supply and one that addresses pesticide run-off and trade-offs among ES. The two cases are used to highlight challenges of such risk assessments, including use of standardised versus ES-relevant test species; data completeness; and trade-offs among ES. Lessons learned from the two case studies are discussed in relation to environmental risk assessment and management of chemical mixtures.

Authors: Syberg K, Banta G, Bruce P, Gunnarsson JS, Gustavsson M, Munns WR Jr, Rämö R, Selck H, Backhaus T. ;Full Source: Integrated Environmental Assessment & Management. 2016 Sep 23. doi: 10.1002/ieam.1849. [fusion_builder_container hundred_percent=”yes” overflow=”visible”][fusion_builder_row][fusion_builder_column type=”1_1″ background_position=”left top” background_color=”” border_size=”” border_color=”” border_style=”solid” spacing=”yes” background_image=”” background_repeat=”no-repeat” padding=”” margin_top=”0px” margin_bottom=”0px” class=”” id=”” animation_type=”” animation_speed=”0.3″ animation_direction=”left” hide_on_mobile=”no” center_content=”no” min_height=”none”][Epub ahead of print] ;[/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]