Alien plants confront expectations of climate change impacts

Area of Science:

• Ecology
• Evolutionary Biology
• Conservation Biology

Background:

• Climate change poses a significant threat to native species.
• The spread and success of invasive alien species offer insights into ecological dynamics.
• Understanding species' responses to novel environments is crucial for predicting biodiversity changes.

Purpose of the Study:

• To re-evaluate the extinction risk of native species under climate change.
• To compare the attributes of successful alien plants with those of native species.
• To question assumptions about the vulnerability of native flora to global warming.

Main Methods:

• Comparative analysis of species' traits.
• Review of ecological literature on plant invasions and climate change.
• Assessment of factors shaping species' ranges.

Main Results:

• Alien plants often spread faster than climate change velocity.
• Phenotypic plasticity and adaptation are key traits for alien plant success.
• Biotic interactions significantly influence alien species' distribution.
• Native species share many of these adaptive attributes.

Conclusions:

• The risk of extinction for native species due to climate change may be overestimated.
• Native species' ability to adapt and spread should be considered in conservation.
• Ecological and evolutionary attributes, not just climate, determine species' fate.