Dr. Juan-Jordá is a Senior Researcher at the Spanish Institute of Oceanography (IEO-CSIC). As a marine ecologist and fisheries scientist, her research focuses on understanding and addressing the key ...
IUCN SSC Tuna and Billfish Specialist Group
Group leadership
Dr Bruce COLLETTE
Mr Maria Jose JUAN JORDA
Dr. Juan-Jordá is a Senior Researcher at the Spanish Institute of Oceanography (IEO-CSIC). As a marine ecologist and fisheries scientist, her research focuses on understanding and addressing the key drivers affecting fisheries sustainability, particularly for highly migratory species such as tunas, billfishes, and sharks, to ensure the long-term use and conservation of marine biodiversity. Through collaborative efforts, she develops ecosystem-based tools and products to support the implementation of the Ecosystem Approach to Fisheries Management (EAFM) in tuna Regional Fisheries Management Organizations (RFMOs). Her work directly supports scientific, advisory, and management organizations at European (DG MARE) and international levels (RFMOs, FAO, and IUCN) contributing to sustainable fisheries management.
To increase awareness of the status and conservation of the world's tuna and billfish species, the IUCN SSC Tuna and Billfish Specialist Group brings together a variety of stakeholders.
Specialist Group work
Reassessments of the world’s tunas and billfishes will greatly improve and consolidate the current state of knowledge of these species around the globe. Many national fisheries management organisations are relying on this data to inform and update current policies and management recommendations.
Conservation Assessments
To inform conservation efforts, the Tuna & Billfish Specialist Group assesses species for the IUCN Red List of Threatened Species. In 2019, TBSG completed reassessments for 51 scombrids and 10 billfishes.
Annual Report
Learn about TBSG’s work and results in 2024 and 2025.
Previous reports:
TBSG Annual Report 2023
TBSG Annual Report 2022
TBSG Annual Report 2021
TBSG Annual Report 2020
TBSG Annual Report 2019
TBSG Annual Report 2018
TBSG Annual Report 2016-2017