Depletion Rate Calculator

Initial Resource Stock (N₀) ?Starting population or resource quantity (e.g., fish stock in tons, trees, water volume).

Current Resource Stock (Nₜ) ?Current measured quantity after time period.

Time Period (years) ?Time elapsed between initial and current measurement.

Harvest/Extraction Rate (optional) ?Annual removal rate (e.g., fishing, logging). Leave blank for natural depletion.

Calculate Depletion Rate

About the Depletion Rate Calculator

The Depletion Rate Calculator is a scientifically accurate tool designed to measure the rate at which natural resources — such as fish stocks, forests, groundwater, or minerals — are being depleted over time. Built using peer-reviewed exponential decay and logistic growth models widely used in ecology, fisheries science, and environmental management, this calculator helps farmers, researchers, policymakers, and conservationists make data-driven decisions. Available on Agri Care Hub, it supports sustainable resource management. Learn more about overexploitation dynamics in this study on Depletion Rate in fisheries.

What is Resource Depletion Rate?

The depletion rate (r) represents the intrinsic rate at which a renewable or non-renewable resource declines when subjected to extraction pressure or environmental stress. In exponential models, it is calculated as:

r = [ln(N₀ / Nₜ)] / t

Where N₀ is initial stock, Nₜ is current stock, and t is time in years. A positive r indicates depletion; negative r indicates growth or recovery.

Why is the Depletion Rate Calculator Important?

Understanding depletion rate is critical for sustainable harvesting, policy making, conservation planning, economic forecasting, and climate adaptation.

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