Small mammal inventory of the Apostle Islands National Lakeshore
Smith G and Maragi F. 2004. Small mammal inventory of the Apostle Islands National Lakeshore
MacArthur and Wilson (1967) suggested that one could model island community diversity and predict probability of occurrence knowing extinction probabilities and colonization probabilities. The difficulty is knowing the latter parameters. Extinction probabilities are of great concern in the conservation biology movement and have been addressed more extensively than colonization probabilities. Colonization depends first upon the occurrence of the species on the mainland. Thus, island fauna are a subset of mainland fauna. In the case of mammals of the Apostle Islands National Lakeshore (APIS), the island subset depends upon the mammal communities of Ashland and Bayfield Counties. Colonization may also depend upon winter activity (Lomolino 1988, 1993) but Hanski and Peltonen (1988) and Peltonen and Hanski (1991) suggest that late summer migrations have a higher chance of establishing themselves than those occurring in winter. However in these studies, distances between islands and the mainland varied from 40 to 820 m (Hanski and Peltonen 1988), distances between the Apostle Islands and the mainland vary from a few kilometers to 24 kilometers.
- Type
- Unpublished Report
- Authors
- Smith, Gus; Maragi, Frank
- Date of Issue
- 2004
- Units
- APIS , GLKN
- Keywords
- Abundance (Biodiversity), Animal Studies, Distribution (Biodiversity), Ecology, Inventory and Monitoring (I&M), Mammal Inventory, Mammalia (Mammals), Observations, Presence (Biodiversity)