How to use the holling type ii functional response calculator
Find how many prey a predator eats per period using the Holling type II disc equation. Enter attack rate, handling time per prey, prey density, time period in the fields above; the prey eaten per predator in period, prey eaten per unit prey density are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “Holling functional response”, “predator prey intake”, “handling time predator”, “calculate holling type ii functional response”, “find prey eaten per predator in period”.
Formula
Variables
- a — Attack rate
- h — Handling time per prey (h)
- N — Prey density (prey/m²)
- T — Time period (h)
Worked example
With attack rate = 0.5, handling time per prey = 0.2 h, prey density = 10 prey/m², time period = 1 h, the calculator gives prey eaten per predator in period ≈ 2.5 prey; prey eaten per unit prey density ≈ 0.25 prey per prey.
Frequently asked questions
What is the holling type ii functional response calculator used for?
Find how many prey a predator eats per period using the Holling type II disc equation. It helps with questions such as “Holling functional response”, “predator prey intake”, “handling time predator”.
What is the formula for the holling type ii functional response calculation?
Prey eaten per predator in period (prey) = a × N × T / (1+a × h × N). Prey eaten per unit prey density (prey per prey) = [Prey eaten per predator in period] / N. Here a is attack rate, h is handling time per prey (h), N is prey density (prey/m²), T is time period (h).
What inputs do I need for the holling type ii functional response calculator?
You need attack rate, handling time per prey in h, prey density in prey/m², time period in h. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the holling type ii functional response calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the holling type ii functional response result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.