Global patterns of illegal marine turtle exploitation.

Area of Science:

• Marine Conservation Biology
• Wildlife Law Enforcement
• Global Biodiversity Assessment

Background:

• Human exploitation of wildlife, including marine turtles, poses a significant conservation challenge.
• Illegal trade in marine turtles for various purposes continues globally.
• Existing laws prohibit marine turtle exploitation in numerous countries and regions.

Purpose of the Study:

• To conduct the first global assessment of illegal marine turtle exploitation.
• To analyze exploitation patterns across spatial scales (Regional Management Units and countries) over three decades.
• To identify trends and impacts of exploitation on marine turtle populations.

Main Methods:

• Collated data from peer-reviewed studies, grey literature, media reports, and expert questionnaires.
• Analyzed exploitation data spanning from 1990 to 2020.
• Estimated annual exploitation numbers and assessed impacts on marine turtle Regional Management Units (RMUs).

Main Results:

• An estimated 1.1 million marine turtles were exploited between 1990 and 2020.
• Over 44,000 turtles were exploited annually in the last decade.
• A 28% decrease in reported exploitation occurred from the 2000s to the 2010s.
• Exploitation primarily involved green and hawksbill turtles.
• Most exploitation in the 2010s occurred in RMUs with low risk of population decline.

Conclusions:

• Illegal marine turtle exploitation appears to have declined in the past decade.
• Exploitation is mainly concentrated in large, stable, and genetically diverse marine turtle populations.
• Despite declines, continued monitoring and enforcement are crucial for marine turtle conservation.