Calculateur de Surface d'Habitat Gratuit
Calculez la surface d'habitat nécessaire pour une espèce. Estimez l'aire minimale viable pour la conservation de la biodiversité.
Minimum Habitat Area
625 hectares
Minimum Habitat Area vs Target Number of Species
Formule
How to Calculate Minimum Habitat Area
The species-area relationship predicts how many species an area can support.
Formula
S = c * A^z (Species-Area Relationship)
A = (S / c)^(1/z) (Solving for area)
Where:
This relationship is one of ecology's most consistent patterns.
Exemple Résolu
Find area needed for 50 species with c=10 and z=0.25.
- 01Area = (50 / 10)^(1/0.25) = 5^4 = 625 hectares
- 02In acres: 625 * 2.471 = 1,544 acres
- 03In km2: 625 / 100 = 6.25 km2
- 04Species at half area: 10 * 312.5^0.25 = 42 species
Questions Fréquentes
What is the species-area relationship?
The species-area relationship (SAR) is one of ecology's fundamental laws: larger areas support more species. The relationship follows a power law: S = cA^z.
Why does habitat fragmentation matter?
Fragmenting habitat into small patches reduces total species more than losing the same amount of area from a single large patch. Edge effects, isolation, and reduced gene flow all contribute.
What is the 30x30 conservation goal?
The 30x30 initiative aims to protect 30% of land and ocean by 2030. Scientists estimate this level of protection is needed to prevent catastrophic biodiversity loss.