Índice efetividade UC (IEUC)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Conservation Unit Effectiveness Index (IEUC) is a tool that calculates a score from 0 to 100 to measure the performance of a protected area. It works as a weighted average of predefined indicators, such as management, biodiversity, social aspects, and finances. Each indicator receives a weight according to its relative importance, allowing a customized evaluation.
To calculate the IEUC, the user enters values for each indicator (e.g., from 0 to 10) and their respective weights. The system multiplies each value by its weight, sums the products, and divides by the sum of weights. The result is a number between 0 and 100, where 0 represents null effectiveness and 100 represents maximum possible effectiveness.
This index is useful for environmental agencies, protected area managers, researchers, and NGOs that need to compare different units or monitor the evolution of the same unit over time. It helps identify strengths and weaknesses, justify investments, and prioritize conservation actions.
Important cautions: the choice of indicators and weights must be based on technical criteria and local context. Inconsistent or subjective data can distort the result. The IEUC does not replace in-depth field assessments, but serves as a quick and standardized diagnostic.
Frequently asked questions
Can the IEUC be used for any type of Conservation Unit?
Yes, as long as indicators and weights are adapted to the specific context of the unit, such as category, biome, and management objectives.
How to define the weights for each indicator?
Weights should be defined by experts or based on public policies, respecting the relevance of each aspect to the unit's effectiveness.
Can the index be negative or greater than 100?
No, the IEUC is normalized to range from 0 to 100. Values outside this range indicate input data errors.
How many indicators are needed for a reliable calculation?
A minimum of 3 indicators is recommended, but the more complete the set, the more representative the index will be.
Does the IEUC replace a full effectiveness assessment?
No. It is a screening and monitoring tool. Full assessments require field visits and qualitative analysis.