2018-地中海珊瑚虫保护现状（英文版）-9mb

Summary of the Conservation Status of Mediterranean Anthozoa

Core Content

This document provides an overview of the conservation status of anthozoa in the Mediterranean Sea, based on a regional assessment conducted by the IUCN Red List of Threatened Species. It highlights the current threats, the status of species, and offers recommendations for effective conservation measures.

Main Points

1.1. Global and Regional Context of Anthozoa

• Anthozoa are a class of marine organisms within the phylum Cnidaria, which includes corals, anemones, and gorgonians.
• Globally, there are approximately 9,000 species of Cnidaria, with 6,142–7,500 species of anthozoa.
• Anthozoa are widely distributed in all seas, from shallow to deep waters, and do not produce medusae in their life cycle.
• The subclass Octocorallia includes colonial species with eight tentacles, such as soft corals, gorgonians, and sea pens.
• The subclass Hexacorallia includes solitary or aggregated species like sea anemones, black corals, and stony corals, with stony corals (Scleractinia) being the most numerous group, comprising over 1,300 species.

1.2. Mediterranean Anthozoa

• The Mediterranean Sea is home to 150 native anthozoa species, of which 26 are endemic.
• A total of 212 species are known to occur in the Mediterranean, but 62 are considered problematic due to uncertainty in their taxonomic status or distribution.
• 136 species were assessed in this report, with 17 classified as threatened, 10 as Near Threatened, and 69 as Data Deficient.
• The Red List status of the 136 assessed species is summarized, with 26 species being endemic and 6 species receiving international protection.

1.3. Objectives of the Regional Assessment

• To evaluate the conservation status of Mediterranean anthozoa using IUCN Red List criteria.
• To identify species at risk of extinction and guide appropriate conservation actions.
• To support regional policy instruments and improve awareness of the status of anthozoa.

Key Information

2.1. IUCN Red List Methodology

• The assessment was conducted by more than 25 experts from across the Mediterranean region.
• It followed the IUCN Red List guidelines for regional assessments and was reviewed during a workshop in Santa Margherita Ligure, Italy.

2.2. Geographic and Taxonomic Scope

• The geographic scope was the Mediterranean Sea, from the Gibraltar Strait to the Marmara Sea.
• The Black Sea and adjacent Atlantic waters were excluded.
• 212 species were known to occur in the Mediterranean, but only 136 were assessed.

3.1. Conservation Status of Mediterranean Anthozoa

• 13% (17 species) are classified as Threatened.
• 7% (10 species) are Near Threatened.
• 50% (69 species) are Data Deficient, indicating insufficient information to assess their conservation status.
• 26 species are endemic, with 2 of them classified as threatened.

4.1. Major Threats

• Fishing activities, especially bottom trawling and dredging, are the main threat due to bycatch.
• Climate change is causing increased seawater temperatures, affecting gorgonians and other coral species.
• Pollution, sedimentation, invasive species, eutrophication, and human disturbance also pose significant risks.
• Marine litter and coastal development contribute to habitat degradation.

5.1. Conservation Recommendations

• Strengthen legal protection for threatened species and improve marine protected area (MPA) networks, especially in deep sea environments.
• Enhance knowledge of threatened species to better assess population trends, distribution, and conservation needs.
• Focus on fishing restrictions, particularly on bottom trawling and dredging, and develop tools to reduce bycatch.
• Implement climate change adaptation strategies to protect vulnerable habitats and species.
• Develop a Regional Adaptation Management Plan for Red Coral (Corallium rubrum) to ensure recovery and survival.
• Reduce illegal harvesting of anthozoa and improve regional cooperation and data collection, especially in North Africa and the Levantine Sea.

Conclusion

The Mediterranean anthozoa face serious conservation challenges, primarily from fishing pressure, climate change, and human activities. The IUCN Red List assessment highlights the need for urgent conservation actions, including legal frameworks, MPA expansion, and improved monitoring and research. The report serves as a critical tool for policymakers and conservationists to guide future efforts in protecting this unique marine biodiversity.

Key Species and Habitats

• Threatened species include Red Coral (Corallium rubrum), which is regulated in some countries.
• Endemic species such as Paranemonia vouliagmeniensis and Ellisella paraplexauroides are particularly vulnerable.
• Key habitats include gorgonian forests, sea pen communities, black coral gardens, and cold water coral reefs.

Authors and Contributors

• The report was compiled by a team of 21 experts from various institutions across the Mediterranean region, including IUCN, Universities, and conservation organizations.
• It was supported by the MAVA Foundation and the Spanish Ministry of Environment and Junta de Andalucía.

References and Appendices

• The report includes references, appendices, and a list of figures and tables.
• Appendix 1 provides a summary of the Red List status of native Mediterranean anthozoa.
• Appendix 2 lists taxa not included in the assessment.
• Appendix 3 includes national laws for the protection of anthozoa.
• Appendix 4 lists anthozoa species on international annexes and regulations.

Legal and Ethical Notes

• The IUCN Red List is a global authority on species conservation.
• The report does not imply any legal stance on countries or territories.
• Photographs used in the report are the property of their original copyright holders.
• Reproduction of the publication is authorized for non-commercial use with proper acknowledgment.

Summary of Findings

• 13% of assessed species are threatened with extinction.
• 7% are Near Threatened.
• 50% are Data Deficient, requiring more research.
• 26 species are endemic, with 2 threatened.
• Fishing bycatch is the primary threat.
• Climate change and pollution are also significant.
• Regional cooperation is essential for effective conservation.

Future Actions

• Expand marine protected areas to include deep sea environments.
• Improve data collection and monitoring in understudied regions.
• Revise fishing regulations to reduce bycatch and overexploitation.
• Develop a Regional Management Plan for Red Coral.
• Strengthen international agreements and national legislation to protect anthozoa.

Final Remarks

The report underscores the importance of anthozoa in Mediterranean ecosystems and the urgent need for conservation. It serves as a foundation for future research and policy development in marine biodiversity protection.