The species–area relationship does not have an asymptote!
2008
Aim
To attack a widespread myth.
Location
World-wide.
Methods
Simple mathematical logical and empirical examples.
Results
As both species and area are finite and non-negative, the species–area relationship is limited at both ends. The log species–log area relationship is normally effectively linear on scales from about 1 ha to 107 km2. There are no asymptotes. At the intercontinental scale it may get steeper; at small scales it may in different cases get steeper or shallower or maintain its slope.
Main conclusion
The species–area relationship does not have an asymptote.
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