Connectivity Analysis Toolkit License Version history Getting Started Overview of Methods Three Methods for Connectivity Analysis Subset Centrality: Mapping Linkages All-pairs Centrality: Mapping Landscape Connectivity Network Flow Analysis of Time Series Input files Output files Running the Toolkit from the GUI Hexmap Tab Graphs Tab Connectivity Tab Output Tab Running the Toolkit from the Command Prompt Flowchart of analysis process Examples Example 1: Shortest-path betweenness centrality (BC) Example 2: Shortest-path betweenness subset centrality Example 3: Comparison of subset and all-pairs current flow BC Example 4: Comparison of shortest-path and current flow BC Tutorial Exercise 1 - Mapping linkages with min-cost-max-flow subset centrality Exercise 2 - Mapping linkages with shortest-path subset centrality Exercise 3 - Mapping landscape connectivity with all-pairs centrality Exercise 4 - Mapping connectivity under climate change: analysis of time series Troubleshooting Related Resources System requirements Contacts & Credits
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# Example 4: Comparison of shortest-path and current flow BC Case study: Habitat connectivity for the Mexican wolf The endangered Mexican wolf (Canis lupus baileyi) is being restored to the southwestern United States. Conserving habitat linkages may be important for facilitating dispersal between populations. We used a habitat model for the species as input to an analysis of shortest-path betweenness centrality and current-flow betweenness centrality (BC). The figure below shows the most important linkages from shortest-path BC in purple, with the red areas in the background showing areas of high current flow, which are connectivity 'pinchpoints' where much potential dispersal flow is being routed through relatively limited habitat. Comparing results from the 2 methods provides more information for linkage conservation planning than does either method alone. Conservation guidelines might focus on the most important shortest-path linkages but give additional attention to areas with high current flow as well.
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