Resilience of the Anacostia River basin: Institutional, social, and ecological dynamics

Abstract

The Anacostia watershed traverses the urban-suburban areas around Washington, D.C., and Maryland. Historically, the Anacostia River basin has transitioned from a biologically rich natural ecology prior to European settlement through three periods of ecosystem degradation due to agriculture and navigation, industrialization, and urbanization. The current regime is dominated by restoration and green-infrastructure activities yet is still influenced by previous regimes' legacy effects and continued urban-development pressures. The major drivers of regime shifts from presettlement to the present are (1) societal treatment of the basin's waters, lands, vegetation, and wildlife as exploitable goods and services for short-term economic benefit (even in the current regime in which improved water quality and restored lands are public goods and services); (2) shifts from weak to strong environmentalist values and activism; (3) changing ways that humans psychologically relate to the basin and its functions; (4) patterns of structural inequality, oppression, discrimination, and movements to seek social and environmental justice; and (5) changes in governance institutions, including laws, to support and facilitate the dominant social values and policies of the time. Institutions have played strong and pervasive roles in both the watershed's declining ecological resilience and potential for improving social-ecological resilience. The greatest opportunities for a more resilient, climate-adaptive Anacostia River watershed require continued and improved changes in watershed governance, restoration and greeninfrastructure initiatives, land-use regulation, public engagement, integration of social justice into watershed decision-making, and monitoring and feedback loops.