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Related Experiment Video

Updated: Jul 15, 2026

Continuous Hydrologic and Water Quality Monitoring of Vernal Ponds

Continuous Hydrologic and Water Quality Monitoring of Vernal Ponds

Published on: November 13, 2017

Landscape-level thresholds, and newt conservation.

Mathieu Denoël¹, G Francesco Ficetola

¹Laboratory of Fish and Amphibian Ethology, Behavioural Biology Unit, Department of Environmental Sciences, University of Liege, 22 Quai van Beneden, 4020 Liège, Belgium. Mathieu.Denoel@ulg.ac.be

Ecological Applications : a Publication of the Ecological Society of America

|May 8, 2007

Summary

Ecological thresholds indicate rapid environmental changes. This study found species-specific thresholds in newt habitats, cautioning against community-level generalizations for conservation efforts.

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Area of Science:

Ecology
Conservation Biology
Environmental Science

Background:

Ecological thresholds signify abrupt shifts in ecosystem states.
Understanding these thresholds is crucial for effective species and habitat management.
Inconsistent findings and methods hinder broad application of threshold concepts.

Purpose of the Study:

To investigate the existence of ecological thresholds in species-habitat relationships.
To compare thresholds for individual species versus the entire community.
To utilize three newt species as model organisms for threshold analysis.

Main Methods:

Employed two distinct statistical methods to detect thresholds.
Analyzed data from a sample of 371 ponds.
Assessed thresholds related to landscape configuration and composition.

Main Results:

Identified significant thresholds for landscape factors affecting newt occurrence.
Specific thresholds were found for distance to forest and forest/crop cover for Triturus alpestris and Triturus helveticus.
Observed variability in threshold locations across species, suggesting limited community-level applicability.

Conclusions:

Thresholds vary significantly between individual species.
Caution is advised when applying community-level thresholds.
Future research should focus on species-specific threshold identification for targeted conservation.