Validating measurements of acclimation for climate change adaptation

Area of Science:

• Ecology
• Evolutionary Biology
• Climate Change Biology

Background:

• Acclimation and plasticity are crucial for ectotherm stress resistance in climate change.
• Assessing acclimation's adequacy for climate change requires robust data and analysis.
• Current databases for acclimation adequacy are limited by context-dependent nature of acclimation.

Purpose of the Study:

• To argue that acclimation's context-dependent nature limits standardized metrics for climate change.
• To highlight the dynamic variation in tolerances and acclimation obscured by summary statistics.
• To propose future research directions for validating acclimation's role in insect climate change adaptation.

Main Methods:

• Review of recent developments in climate change and acclimation research.
• Critique of current methods for summarizing and analyzing acclimation data.
• Proposal for integrating field studies and mechanistic modeling for future research.

Main Results:

• Acclimation's utility as a standardized metric is limited due to context dependency and diverse assay methods.
• Dynamic variation in tolerances and acclimation is often obscured by summary statistics.
• No studies have convincingly demonstrated a significant role for acclimation in recent insect climate change adaptation.

Conclusions:

• Forecasting climate change impacts on insects requires focus on temporal, population, and treatment-level variance.
• Future studies should integrate field data and mechanistic modeling to validate acclimation's role.
• Developing conceptual frameworks, empirical data on fitness consequences, and broader geographic/taxonomic coverage are essential.