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Rethinking Conservation Practice in Light of Climate Change

Predicted changes in climate present unusual challenges to conservation planners, land managers, and restoration efforts directed toward preserving biodiversity. Successful organisms will respond to these changes by persisting in suitable microsites, adapting to novel conditions, or dispersing to new sites. We describe three general categories of strategies for restoring and managing natural systems in light of likely changes in future climate that collectively embrace many of the approaches that The Nature Conservancy is applying or considering in the state of Washington. Component redundancy suggests that in natural systems greater ecosystem resilience, despite changing climates, may be achieved by increasing species and community redundancy. Functional redundancy is the idea that different components of a system can fulfill the same functions, thereby producing the same result. Restoration projects and managers of natural systems can introduce ecologically equivalent species or novel associations of species, which may help avoid losses in biodiversity. Increased connectivity suggests that success is achieved by ensuring that suitable habitats are always within easy reach of one another. This includes conservation approaches that provide linkages, corridors, or other mechanisms to facilitate the movement of organisms as they respond to climate changes. We acknowledge that these approaches are not without risk, nor do they necessarily ensure success. However, we propose them as potential solutions among a growing suite of alternative strategies for incorporating climate change into conservation actions.

Keywords: climate change, conservation management, global warming, Pacific Northwest, restoration