Location: Piscataquis county, Maine
Research Type: Radiotelemetry study
Forest Type: red spruce/ balsam fir, black spruce, yellow birch, paper birch

Clearcuts: "Isolation of residual patches interacts with patch size to influence the spatial distribution of marten in landscapes with extensive clearcutting." No marten occupied a range with over 40% regenerating forest. Residual forest patches within clearcut landscape contained 82% of locations..96% of locations were within telemetry error of residual patches. Patches used by resident marten were 18 times larger (median = 27 ha) than patches with no use and were closer to adjacent forest preserves.

Management Recommendations: "Despite different spatial requirements, both males and females tolerated a median of only 20% regenerating clearcuts in their home ranges." "Long term planning to maximize residual patch area and minimize distance between large residual forest patches is recommended."