Using a long term data set that includes presence records for the silver-spotted skipper butterfly (Hesperia comma), the authors were able to compare patches where the species was found from 2000-2009. Their results confirm previous findings that maintaining landscape level connectivity is important for managing species range shifts. Their new findings suggest that local management practices that focus on improving survival rates at new patches are key to ensuring species survival at expanding range margins. Connectivity (both direct and indirect) to multiple patches is crucial in determining colonization probability, although ensuring connectivity at a local level can be challenging unless there is landscape level cooperation among management. They recommend complementary strategies for facilitating species’ range shifts: encouraging colonization through habitat connectivity, and increasing habitat patch quality or size to support species survival. With these focused management recommendations, they are able to provide new useful methods for dealing with future potential range shifts.
Lawson, CR, JJ Bennie, CD Thomas, JA Hodgson, and RJ Wilson. 2012. Local and landscape management of an expanding range margin under climate change. Journal of Applied Ecology 49: 552-561.