Related Experiment Video
Updated: Jun 1, 2026

08:14
Ecotoxicological Methodologies to Evaluate Biomarkers at Different Scales in Neotropical Anurans
Published on: April 28, 2023
Performance and consistency of indicator groups in two biodiversity hotspots
Joaquim Trindade-Filho1, Rafael Dias Loyola
1Programa de Pós-Graduação em Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
Plos One
|June 4, 2011
Summary
Restricted-range species are effective indicators for conservation planning, representing mammal diversity in Brazil
Area of Science:
- Conservation Biology
- Biodiversity Assessment
- Indicator Species
Background:
- Limited data and funding necessitate the use of indicator groups for spatial conservation prioritization.
- Evaluating the regional consistency of indicator group performance is crucial for their selection.
Purpose of the Study:
- To assess the effectiveness and consistency of nine indicator groups for representing mammal species in two Brazilian Biodiversity Hotspots.
- To identify indicator groups that perform reliably across different regions for conservation planning.
Main Methods:
- Systematic examination of nine indicator groups in the Brazilian Cerrado and Atlantic Forest Biodiversity Hotspots.
- Assessed effectiveness by comparing species representation achieved by indicator groups versus random sets.
- Determined consistency by statistical analysis of target species representation across the two regions.
Main Results:
- Effective indicator groups required selecting less than 2% of the area to represent target mammal species.
- Restricted-range species proved to be the most effective indicators for overall mammal diversity and target species.
- Restricted-range species demonstrated high consistency in performance across both studied Biodiversity Hotspots.
Conclusions:
- Several indicator groups can aid in mammal conservation planning in the Cerrado and Atlantic Forest.
- Restricted-range species are consistently the most effective indicator group for conservation planning.
- This indicator group is vital for capturing high diversity of endemic and endangered species.
Related Concept Videos
Conservation of Declining Populations
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
Threats to Biodiversity
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
Habitat Fragmentation
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
Conservation of Small Populations
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less likely to...
Ecological Niches
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.Multiple species cannot occupy the exact same niche within their habitat. If the niches of two or more species overlap to a large extent, the competitive exclusion principle dictates that one species will outcompete the other, forcing it to...
What is Biodiversity?
Biodiversity describes the variety of living things at multiple organizational levels: genetic, species and ecosystem diversity. Species diversity includes all branches of the evolutionary tree from single-celled prokaryotic organisms, bacteria, and archaea, to the eukaryotic kingdoms: plants; animals; fungi; and protists. To date, there have been about 1.75 million species identified, and new species are discovered every week.

