Conservation Challenges for Endemic Vascular Plants: Exploring Large-Scale Patterns in Climate-Driven Distribution...

Area of Science:

• Ecology
• Conservation Biology
• Plant Science

Background:

• Endemic vascular plants face significant global conservation challenges.
• Understanding their distribution and traits is crucial for resilience under environmental change.

Purpose of the Study:

• To analyze large-scale distribution patterns and functional traits of endemic vascular plants.
• To investigate factors influencing their resilience, survival, and regeneration.
• To inform conservation strategies for threatened endemic flora.

Main Methods:

• Compiled data for 23,981 endemic vascular plant taxa across 173 countries.
• Included conservation assessments, native occurrences, and functional traits (life form, seed dormancy/storage).
• Analyzed climate-driven distributions, trait representation, and Red List category relationships.

Main Results:

• 58% of endemic taxa are extinct or threatened, thrice the rate of non-endemics.
• 34% are "climate specialists" (71% threatened); 11 life forms show >50% threatened taxa.
• 91% exhibit seed dormancy; 82% have orthodox seeds, but a higher proportion have recalcitrant seeds.

Conclusions:

• Endemic plants are highly sensitive to habitat loss and climate change, necessitating targeted conservation.
• Conservation strategies must account for climate specialization and functional traits, especially seed biology.
• Prioritizing climate specialists and enhancing seed banking for diverse seed types are vital for ex situ conservation and reintroduction.