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Calculators/Science/Ecology

Ecology calculators

Population and diversity formulas for the field: carrying capacity, species diversity and predator-prey dynamics.

Logistic population growthPopulation size over time under a fixed carrying capacity (Verhulst model).Shannon diversity indexBiodiversity of a community from species counts.Lotka–Volterra predator–prey ratesInstantaneous population growth rates for a classic predator–prey pair.Kaya identity (CO₂ emissions)Global CO₂ emissions decomposed into population, wealth, energy and carbon factors.Tree basal areaCross-sectional trunk area at breast height (DBH), the standard forestry measure of stand density.Animal mortality ratePercentage of a population lost to death over a period, accounting for births during that period.Wind turbine power outputElectrical power generated by a wind turbine from rotor size, wind speed and efficiency.Hydroelectric power outputPower generated by a dam turbine from head, flow rate and efficiency.

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