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Calcimator

Habitat Suitability Score Calculator

Calculate a Habitat Suitability Index (HSI) from food, water, cover, and disturbance scores using the geometric mean method.

Inputs

Results

Habitat Suitability Index

0.7

Habitat Classification

Good

Arithmetic Mean0.7
Limiting FactorCover
Limiting Factor Score0.6
Carrying Capacity Multiplier0.7×
Improvement Potential0.05
How to Use This Calculator
  1. Rate Food Availability, Water Availability, Cover Quality, and Disturbance Level on a 0-1 scale.
  2. Review the Habitat Suitability Index (HSI) — the geometric mean of the four factors.
  3. Check the Habitat Classification (optimal, suitable, marginal, unsuitable).
  4. Note the Limiting Factor and its score — improvement efforts should target this factor first.
  5. Apply the Carrying Capacity Multiplier to baseline species density estimates for the site.

How the result changes with Food Availability

Food AvailabilityHabitat Suitability IndexHabitat Classification
0.10.43Marginal
0.350.59Marginal
0.650.68Good
0.90.74Good

What each input means

Food Availability
Food resource quality score from 0 (none) to 1 (optimal). Based on forage abundance, prey density, or plant productivity.
Water Availability
Water resource score from 0 (none) to 1 (optimal). Considers proximity, permanence, and quality of water sources.
Cover Quality
Protective cover score from 0 (none) to 1 (optimal). Includes nesting sites, thermal cover, and escape cover.
Disturbance Level
Human/natural disturbance from 0 (none) to 1 (severe). Includes roads, noise, development, and predator pressure.

What each result means

Habitat Suitability Index
Geometric mean of all factors. Range 0 (unsuitable) to 1 (optimal).
Arithmetic Mean
Simple average of scores (for comparison).
Improvement Potential
HSI gain if limiting factor is raised to 0.8.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Food Availability = 0.7, Water Availability = 0.8, Cover Quality = 0.6, Disturbance Level = 0.3 = 4 input(s) provided
  2. Calculate Habitat Suitability Index
    Habitat Suitability Index
    0.696 = 0.696
  3. Calculate Habitat Classification
    Habitat Classification
    Good = Good
  4. Calculate Arithmetic Mean
    Arithmetic Mean
    0.7 = 0.7
  5. Calculate Limiting Factor
    Limiting Factor
    Cover = Cover

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