Coastal Marten Habitat Connectivity Resistance Surface for the Historical Range

A resistance surface raster file covering the historical range of the coastal marten (Martes caurina humboldtensis) with an eastern buffer. The dataset was created by the Department of the Interior using the Gnarly Landscape Utilities tool to combine layers representing land cover, waterbodies, rivers, roads, and soils. It was last updated on March 4, 2026.

Use Cases

• Modeling least-cost corridors for coastal marten dispersal based on assigned resistance values.
• Assessing landscape permeability by analyzing the combined resistance surface raster.
• Informing conservation planning decisions by identifying high-resistance barriers to movement.
• Extrapolating habitat selection patterns to estimate movement resistance across different land cover types.

Strengths

• Covers the entire historical coastal marten range plus an eastern buffer.
• Integrates multiple spatial data layers (forested/non-forested land cover, waterbodies, rivers, roads, serpentine soils).
• Includes a detailed spreadsheet listing data sources, raster values, class descriptions, and assigned resistance values.

Limitations

• Resistance values are based on estimation and extrapolation from habitat selection data, not empirical movement data.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Department of the Interior

Collection Method

Created using the Resistance and Habitat Calculator component of Gnarly Landscape Utilities (Linkage Mapper tools).

Freshness

Last updated 2026-03-04 08:24:41.857351; freshness should be verified.

Geography

Historical range of the coastal marten (Martes caurina humboldtensis).