Linking demographic processes and foraging ecology in wandering albatross-Conservation implications

Area of Science:

• Population ecology
• Foraging ecology
• Conservation biology

Background:

• Population dynamics and foraging ecology are typically studied in isolation.
• Foraging behavior directly influences demographic processes and resource allocation.
• Wandering albatross (Diomedea exulans) research offers a unique model for integrating these fields.

Purpose of the Study:

• To review how population dynamics and foraging ecology have been combined in wandering albatross studies.
• To highlight the contribution of this integrated approach to understanding ecological processes.
• To emphasize the fundamental role of this research in conserving the threatened wandering albatross.

Main Methods:

• A 50-year long-term study of marked wandering albatross individuals.
• Two decades of tracking studies utilizing the species' large size and tameness.
• Analysis of body mass, age, and sex-specific variations in demographic parameters and foraging behavior.

Main Results:

• Body mass is central to life history allocation, affecting survival, recruitment, and provisioning.
• Significant age-related variations in demographic parameters correlate with foraging distribution and efficiency.
• Pronounced sex-specific differences in foraging and body mass impact breeding and survival trajectories, especially in males.

Conclusions:

• Integrated research on wandering albatrosses has elucidated demographic causes of population decline.
• Tracking studies pinpoint impacts, such as those from long-line fisheries, on foraging.
• This combined approach is vital for effective conservation strategies for long-lived seabirds.