Character Displacement Calculator
Quantify character displacement by comparing trait differences when species occur together versus apart.
Allopatric Trait Means
When species occur separately
Sympatric Trait Means
When species occur together
Trait Parameters
Displacement: Sympatric diff - Allopatric diff
Positive values indicate divergence in sympatry
Displacement Magnitude
+11.00
Strong character displacement
Displacement Ratio
6.50x
Overlap Reduction
72.4%
Trait Differences
Allopatric Difference2.00
Sympatric Difference13.00
Divergence TypeDivergent
Individual Species Shifts
-5.00
Species 1 Shift
d = 1.25
+6.00
Species 2 Shift
d = 1.50
Niche Overlap Comparison
Allopatric Overlap96.9%
Sympatric Overlap26.7%
Statistical Significance
Average Effect Size (d)1.375
t-statistic13.750
Evolutionary Interpretation:
Evidence of ecological character displacement - competition has driven trait divergence in sympatry