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Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians

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Published on: June 17, 2025

Evolutionarily distinct amphibians are disproportionately lost from human-modified ecosystems.

D A Greenberg¹, W J Palen¹, K C Chan¹

¹Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada.

Ecology Letters

|August 23, 2018

Summary

Evolutionarily distinct amphibian species are disproportionately lost when forests are converted to human-altered landscapes. Preserving forests is crucial for maintaining amphibian biodiversity and evolutionary history.

Keywords:

diversification extinction risk forests global change grasslands habitat loss land conversion phylogenetic diversity

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Area of Science:

Ecology
Evolutionary Biology
Conservation Science

Background:

Terrestrial ecosystems are increasingly altered by human activities, impacting biodiversity.
Anthropogenic habitat conversion is linked to the loss of evolutionarily distinct bird species locally.
It remains unknown if this pattern extends to other taxa, such as amphibians.

Purpose of the Study:

To assess if evolutionary history influences amphibian susceptibility to land conversion.
To investigate the global pattern of amphibian assemblage changes in response to habitat modification.
To test if grassland-associated amphibian lineages are pre-adapted to human landscapes.

Main Methods:

A global dataset of amphibian assemblages was compiled.
Data from intact forests were compared with nearby human-modified sites.
Evolutionary distinctiveness was analyzed in relation to land-use change.

Main Results:

Evolutionarily distinct amphibian species were disproportionately lost from converted habitats.
No strong evidence was found supporting grassland lineages being pre-adapted to human landscapes.
Land conversion significantly impacts the evolutionary diversity of amphibian communities.

Conclusions:

The loss of evolutionarily distinct amphibians highlights the vulnerability of unique lineages to habitat conversion.
Preserving remnant forests is essential for conserving the amphibian tree of life.
Urgent conservation efforts are needed to mitigate anthropogenic pressures on amphibian biodiversity.