This data set is one of the outputs of Carlos Carrol's work on focal species in the Northern Appalachians. Static habitat suitability models for lynx, marten, and wolf were fed through a spatially explicit population model (SEPM), called PATCH, to predict source and sink habitat areas across the landscape. The static models for marten were based on six categories of data: vegetation (percent conifer, percent regenerating forest), satellite imagery (brightness, greenness, wetness), geographic (northing, easting, distance to ocean), topographic (latitude adjusted elevation, ruggedness), climatic (average annual snowfall), and human impact (trapping intensity, road density, habitat effectiveness, jurisdiction). PATCH was then able to use these static habitat models to simulate a number of scenarios, including variations in trapping intensity, forestry intensity, and weather patterns due to climate change.
This data layer illustrates a base scenario for marten habitat, with survival in currently trapped areas set at 90% of base level, and survival in untrapped areas set at 100% of base level. This layer is usefull in comparing to scenarios with varying degrees of trapping, forestry, or climatic change intensity.