How do marine heatwaves impact seabirds? (Jun 06, 2024)
Organizers: John F. Piatt, William J. Sydeman, Peter Dann, Bradley C. Congdon
Editors: John F. Piatt, Robert M. Suryan, William J. Sydeman, Mayumi L. Arimitsu, Sarah Ann Thompson, Rory P. Wilson, Kyle H. Elliott

Extreme heatwaves have had dramatic impacts on marine ecosystems worldwide, and they are increasing in frequency and magnitude. The effect of these periodic heating events on seabirds has been manifested in a variety of biological and behavioural responses, including die-offs, reproductive failures, reduced survival, shifts in phenology of breeding or migration, and shifts in distribution at sea. However, the actual mechanisms by which heating events exert their effects on seabirds are not well understood. For example, how does ocean heating reduce prey availability or quality to cause starvation or breeding failure? How are impacts modulated by the duration and spatial extent of heatwaves? How, and to what degree, can seabirds buffer against heatwave impacts? What are the physiological effects of heating on seabirds and their prey? This Theme Section was inspired by the “heatwave impacts” symposium at the 3rd World Seabird Conference held in October 2021.