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Related Experiment Video

Updated: Jun 23, 2026

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

Published on: July 11, 2025

Rare species are valued big time.

Elena Angulo¹, Franck Courchamp

¹Ecologie, Systématique et Evolution, UMR CNRS 8079, Université Paris Sud, Orsay, France.

|April 23, 2009

Summary

Humans value rare species more than common ones, potentially driving the anthropogenic Allee effect. Conservationists should be cautious when using rarity to promote species preservation.

Area of Science:

Ecology
Conservation Biology
Behavioral Economics

Background:

The anthropogenic Allee effect hypothesis suggests human valuation of rarity can endanger species.
This theory, however, lacks empirical evidence demonstrating public preference for rare species.

Purpose of the Study:

To investigate whether humans exhibit a preference for rare species over common ones.
To provide empirical data on the valuation of rarity in species.

Main Methods:

An online experiment was conducted using web-based slideshows.
Participants viewed photographs of either rare or common species.

Main Results:

Slideshows featuring rare species attracted significantly more visitors.

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Last Updated: Jun 23, 2026

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Viewers spent more time engaging with content depicting rare species.

Conclusions:

Empirical evidence confirms that people value rare species more than common ones.
This preference suggests the anthropogenic Allee effect may be widespread.
Conservation strategies leveraging rarity require careful consideration due to potential negative impacts.