Adaptation, plasticity, and extinction in a changing environment: towards a predictive theory

Area of Science:

• Ecology
• Evolutionary Biology
• Conservation Biology

Background:

• Species face unprecedented environmental change due to human activities.
• Current adaptive mechanisms may be insufficient to cope with rapid environmental alterations.
• Understanding extinction risk is crucial for conservation efforts.

Purpose of the Study:

• To develop a simple evolutionary model for critical rates of environmental change.
• To identify key determinants of extinction risk in changing environments.
• To highlight research needs for predicting population persistence.

Main Methods:

• Developed a simple evolutionary model to determine critical environmental change rates.
• Analyzed major determinants of extinction risk.
• Utilized environmental tolerance curves and ecological/evolutionary responses to climate change.

Main Results:

• Identified critical rates of environmental change beyond which populations decline and face extinction.
• Highlighted the importance of phenotypic plasticity and environmental sensitivity of selection.
• Demonstrated the utility of mechanistic approaches for predictive purposes.

Conclusions:

• Phenotypic plasticity and environmental sensitivity of selection are crucial parameters for population persistence models.
• Further empirical assessment of these parameters is needed for accurate extinction risk predictions.
• Mechanistic approaches integrating ecological and evolutionary responses are vital for conservation in a changing world.