Ecology habitat patch connectivity calculator

Calculate connectivity components and isolated patch IDs with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use connectivity components and isolated patch IDs to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Patches [patch ID,x m,y m]
[["A",0,0],["B",2,0],["C",10,0]]
Supplied movement-distance threshold (m)
3
Connectivity components
[["A","B"],["C"]]
Isolated patch IDs
["C"]

Try another scenario

Patches [patch ID,x m,y m]
[["A",0,0],["B",2,0],["C",10,0]]
Supplied movement-distance threshold (m)
12
Connectivity components
[["A","B","C"]]
Isolated patch IDs
[]
Calculation method

Calculation method

Connectivity components

Euclidean threshold graph; connect pairs at distance≤threshold.

Isolated patch IDs

Components with exactly one patch; habitat barriers are not inferred.

Symbols and units
a
Patches [patch ID,x m,y m]
b
Supplied movement-distance threshold (m)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Patch graph, distances, supplied movement thresholds. Returns Connected components and isolated patches. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Supplied movement-distance threshold (m): minimum 1e-12, maximum 1000000000000.0.
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