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

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Challenges and Priorities in Shark and Ray Conservation.

Nicholas K Dulvy¹, Colin A Simpfendorfer², Lindsay N K Davidson¹

¹Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, BC Canada, V5A 1S6.

Current Biology : CB

|June 7, 2017

Summary

Sharks (Class Chondrichthyes) are vital for ocean ecosystems, connecting habitats and regulating energy flow. Effective fisheries management is crucial, with 64 endangered species needing protection and 514 requiring improved management strategies.

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Area of Science:

Marine Biology
Ichthyology
Conservation Science

Background:

Sharks (Class Chondrichthyes) are the earliest extant jawed vertebrates, exhibiting significant functional diversity.
Ecologically, sharks influence energy transfer through trophic levels and connect ecosystems via movements and migrations.
Their low reproductive rates and diverse utilization in fisheries necessitate tailored management approaches.

Purpose of the Study:

To assess the conservation status of sharks, rays, and chimaeras.
To identify species requiring urgent protection and those needing improved fisheries management.
To designate priority countries for conservation actions based on fishing pressures and capacity.

Main Methods:

Analysis of IUCN Red List status for shark species.
Evaluation of fisheries management needs across different shark populations.
Identification of priority countries for conservation interventions.

Main Results:

64 endangered shark species identified as needing new or stricter protections.
514 shark species require improvements in fisheries management.
Designation of priority countries for implementing conservation and management actions.

Conclusions:

A diverse range of fisheries management measures is preferable to one-size-fits-all solutions for shark conservation.
Targeted protections are essential for species with low reproductive output.
Improved fisheries management and targeted conservation efforts are critical for the future of ecologically important shark populations.