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Coral Reef Arks: An In Situ Mesocosm and Toolkit for Assembling Reef Communities

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An integrated system to assess marine extinctions.

Arturo Yáñez-Arenas¹, Miguel Nakamura², Andrew W Trites³

¹Instituto Politécnico Nacional, La Paz, BCS, México.

|October 26, 2023

Summary

A new system, ISAME, assesses marine extinctions more effectively. It categorizes species as unverified, possibly extinct, or extinct, aiding crucial conservation efforts for marine biodiversity.

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Area of Science:

Marine Biology
Conservation Science
Extinction Science

Background:

Over 20 global and 700 local marine extinctions reported in the last 500 years.
Existing methods for verifying extinctions are often data-intensive, time-consuming, and limited in scope.
A robust system is needed to accurately assess marine species extinction status across various scales.

Purpose of the Study:

To develop and apply an Integrated System to Assess Marine Extinctions (ISAME).
To provide a versatile method applicable to any taxonomic group and geographic scale (global and local).
To categorize marine species' extinction status accurately for informed conservation strategies.

Main Methods:

Development of the Integrated System to Assess Marine Extinctions (ISAME).
Application of ISAME to 10 diverse marine extinction case studies.
Categorization of species into 'unverified', 'possibly extinct', or 'extinct' based on evidence.

Main Results:

ISAME classified 6 out of 10 studied species as unverified extinctions due to insufficient evidence or taxonomic issues.
Two species, the Guadalupe storm-petrel and the lost shark, were classified as possibly extinct.
Two species, the largetooth sawfish and Steller's sea cow, were confirmed as extinct.

Conclusions:

The ISAME system offers a scalable and adaptable approach to evaluating marine extinctions.
Accurate extinction status determination is vital for effective marine conservation and preventing biodiversity loss.
The study highlights the need for rigorous evidence in declaring species extinct.