Buffering and phenological mismatch: A change of perspective

Area of Science:

• Ecology
• Climate Change Biology
• Evolutionary Biology

Background:

• Climate change is altering species' phenology, leading to potential mismatches in ecological interactions.
• Phenological asynchrony poses risks to species interactions and ecosystem stability.
• Previous research often highlights the fragility of seasonal interactions.

Purpose of the Study:

• To challenge the notion that phenological asynchrony inevitably leads to severe fitness consequences.
• To identify and categorize mechanisms that buffer the negative impacts of phenological asynchrony.
• To assess the generality of these buffering mechanisms across different taxa.

Main Methods:

• Reviewing literature on phenological interactions and climate change impacts.
• Analyzing case studies, including winter moth caterpillar and host-plant interactions.
• Synthesizing evidence for buffering mechanisms across diverse taxa.

Main Results:

• Phenological asynchrony's fitness consequences are often buffered by various mechanisms.
• Identified three main forms of buffering: reducing asynchrony, reducing costs of asynchrony, and dampening variance.
• Demonstrated the generality of these buffering mechanisms across a broad range of species.

Conclusions:

• Ecological interactions may be more resilient to climate change-induced phenological shifts than commonly assumed.
• Buffering mechanisms are crucial for understanding species' responses to climate change.
• Further research should focus on identifying systems with limited buffering capacity and the limits of these mechanisms.