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Area/Density/Edge Metrics

Area/Density/Edge Metrics. Patch radius of gyration –measure of avg distance organism can move within a patch before patch bnd(extent) Correlation length (Area-weighted mean radius of gyration) – class or landscape level; each patch weighted by A. Physical connectedness

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Area/Density/Edge Metrics

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  1. Area/Density/Edge Metrics • Patch radius of gyration –measure of avg distance organism can move within a patch before patch bnd(extent) • Correlation length (Area-weighted mean radius of gyration) –class or landscape level; each patch weighted by A. Physical connectedness • Largest patch index (LPI) – % landscape comprised of single largest patch (class or landscape level)

  2. Shape Metrics • Shape index • Measures the complexity of patch shape; compare to std shape (square) of same size • P:A dependency resolved • P (patch) / P (square)

  3. Core Area Metrics • Core area Shape effect – inverse Area effect - positive Edge depth effect – inverse • Confounding effects Advantage = integrative Disadvantage = confounds

  4. Aggregation Metrics

  5. Connectivity Metrics • Connectivity (-index of nodes and linkages; range 0 to 1) • where: L = number of links in the network • V = number of nodes in the network

  6. Point Pattern Analysis • Kernel estimators

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