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Circumpolar assessment of ecological mismatch between avian herbivores and plant phenology The timing of breeding is constrained in Arctic ecosystems and small temporal differences in when individuals breed can have large effects on fitness. Arctic ecosystems are generally warming more rapidly than other ecosystems which, for migratory species, can cause an imbalance, or mismatch, between when they have evolved to breed versus when it is optimal to breed environmentally. Geese are abundant herbivores summering in tundra ecosystems, and whose presence has important feedbacks on ecosystem processes. Some goose populations have already exhibited signs that spring vegetation phenology is occurring earlier than individuals are able to breed, with a consequent effect on their reproductive fitness. The magnitude... Categories: Data, Project; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: All Working Groups, Completed, Ecosystems, Land Resources, plants