Keystone Predator Calculator
Assess whether a predator functions as a keystone species with disproportionate effects on community structure.
Predator Parameters
Community Effects
Keystone Index: Effect / Biomass Ratio
Higher values indicate stronger keystone effects relative to abundance
Keystone Index
20.80
Strong keystone species
Biomass Ratio
2.50%
Diversity Effect
+52.0%
Impact Metrics
Community Impact20.80
Dominance Suppression75.0%
Per Capita Effect0.2600
Predator Importance Value10.775
Species Richness Comparison
25
With Predator
vs
12
Without Predator
Ecological Significance: Strong keystone species
Removal would cause major community restructuring