In News:

More than one in three tree species threatened with extinction, finds IUCN’s first Global Tree Assessment

Key Highlights:

Global Tree Extinction Risk:

• 38% of the world’s tree species are now facing the risk of extinction — over one in three tree species is at risk.
• This means 16,425 out of 47,282 tree speciesanalyzed by the International Union for Conservation of Nature (IUCN) are under threat.
• Threatened tree species outnumber all threatened birds, mammals, reptiles, and amphibians combined, highlighting the urgent need for conservation action.

Key Drivers of Threat:

• Deforestation: The primary threat to trees is deforestation, driven by agriculture, livestock rearing, and urban development, especially in tropical regions.
• Climate Change: Rising sea levels and increasingly frequent storms exacerbate the threats, particularly in tropical regions and islands.
• Invasive Species & Pests: Non-native species, pests, and diseases are adding pressure to vulnerable tree populations.

Geographic Vulnerabilities:

• Islands are particularly vulnerable, with a high proportion of threatened species due to habitat destruction and urbanization.
• South America, which boasts the highest tree diversity, faces significant threats, with 3,356 out of 13,668 species at risk, mainly due to deforestation for agriculture.

Ecological and Economic Importance of Trees:

• Trees play a fundamental role in carbon, water, and nutrient cycles, and are critical for soil formation and climate regulation.
• The loss of trees poses a growing threat to thousands of other species of plants, fungi, and animals.
• Trees are essential for local communities, providing resources such as timber, medicines, food, and fuel. Over 5,000 species of trees are used for timber and construction, while more than 2,000 species are vital for food, fuel, and medicine.

Conservation Status:

• Tree species are threatened across 192 countries.
• The assessment is the first global analysis of the conservation status of trees, enabling better-informed conservation decisions.

Positive Actions and Strategies:

• Successful community-driven conservation efforts have had positive outcomes in places like the Juan Fernández Islands, Cuba, Madagascar, and Fiji.
• Some countries, including Ghana, Colombia, Chile, and Kenya, already have national strategies for tree conservation.
• Ex-situ conservation, such as seed banks and botanical gardens, is also crucial to safeguard species that may not survive in the wild.

Urgent Call for Action:

The IUCN Global Tree Assessment underlines the urgent need for enhanced conservation efforts, including:

• Habitat protection and restoration.
• Ex-situ conservation through seed banks and botanical gardens.
• Diversified and species-focused reforestation strategies.
• Supporting community-led conservation initiatives to safeguard vulnerable tree species.