Marine Biology

Planning calculators for marine biology — estimates from industry-style inputs.

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Estimate fish population size using the Lincoln-Petersen mark-recapture method with Chapman correction and 95% confidence intervals.

Model coral colony linear extension rate based on species growth baseline, water temperature, light (PAR), and aragonite saturation state.

Estimate minimum MPA size from species home range, viable population targets, species-area relationships, and protection level requirements.

Estimate cetacean migration distance, travel time, and energy expenditure based on breeding/feeding ground coordinates, swim speed, and body mass.

Calculate plankton cell density and carbon biomass from net tow or water sample counts using standard oceanographic methods.

Plan seagrass restoration projects: estimate shoot requirements, labor, costs, carbon sequestration, and ecosystem service value.

Calculate Shannon-Wiener diversity (H'), Simpson's index, Pielou's evenness, and Margalef's richness from species abundance data.

Calculate bycatch ratio, discard rate, BPUE, and fleet-wide bycatch estimates from fishing operation data for fisheries management.

Estimate LC50 from two dose-response data points using probit approximation. Calculate toxic units, PNEC, and environmental risk quotient.

Estimate mangrove ecosystem carbon stock from tree measurements, soil properties, and area using allometric equations (Komiyama et al. 2005).