// multi-utility computation suite · offline · instant · precise
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sci.species-area-relationship Calculator
Calculates species richness from island or habitat area using the species-area relationship: S = cA^z, typically z = 0.2–0.35. Halving habitat area reduces species richness by ~13% (at z=0.25) — the relationship underpins minimum viable reserve size estimates in conservation biology.
Inputs
Reference Area Km2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Reference Species
Reference formula or conversion factor shown for context.
New Area Km2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Z Value
Reference formula or conversion factor shown for context.
Results
predicted species at new area
The computed two-dimensional surface area.
c coefficient
Sample size or count used in the calculation.
S = cA^z
Reference formula or conversion factor shown for context.