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How might turbulence affect animal flight in a changing world?
1Biosciences, Swansea University, Singleton Park, Swansea, SA2 8PP, UK.
The Journal of Experimental Biology
|February 20, 2025
Summary
Turbulence significantly increases the metabolic costs of animal flight, especially for larger birds. Understanding these impacts is crucial as changing environments alter turbulence patterns.
Area of Science:
- * Aviation physiology and biomechanics.
- * Environmental science and atmospheric studies.
Background:
- * The impact of wind on animal flight is well-documented, but the effects of atmospheric turbulence remain poorly understood.
- * A predictive framework for turbulence's impact on flapping flight is currently lacking.
- * Turbulence is pervasive and its characteristics are changing due to land use and climate change.
Purpose of the Study:
- * To assess drivers of atmospheric turbulence.
- * To investigate the effects of turbulence on metabolic flight costs.
- * To explore potential animal behavioral responses to turbulence.
Main Methods:
- * Review of existing literature on turbulence drivers and flight energetics.
- * Analysis of metabolic data relating turbulence to flight power.
- * Consideration of body mass effects on the ability to cope with turbulence.
Main Results:
- * Turbulence measurably increases flight costs when eddy size matches wingspan.
- * Metabolic power can increase by 25-100% due to turbulence.
- * Larger animals face greater challenges meeting turbulence-induced costs, potentially leading to avoidance behaviors.
Conclusions:
- * Turbulence poses a significant energetic challenge for flying animals.
- * Body mass is a key factor influencing an animal's ability to tolerate turbulence.
- * Further research integrating lab and field data is needed to understand avoidance strategies and flight implications in changing atmospheric conditions.
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