Population Dynamics of Eider Species
Summary
The population dynamics of eider species are shaped by a complex interplay of demographic rates such as survival, fecundity and recruitment, and environmental drivers including predation, climate variability and anthropogenic stressors. Common eiders (Somateria mollissima) exhibit life-history traits of long-lived sea ducks with low annual reproductive rates, relying on capital breeding strategies to fund egg production. Nest predation by both native and invasive mammals can cause rapid declines in local nest success, while changes in food availability and contaminant exposure influence adult body condition and energy metabolism during the energetically demanding incubation period. Climate-driven shifts in sea-ice cover and sea surface temperatures alter foraging habitats and predator–prey interactions over flyway scales. Management actions, from harvest regulation to predator control, demonstrate the potential to modify demographic rates and carrying capacity, but success is contingent on reducing natural mortality and mitigating cumulative impacts from pollution, extreme weather events and resource limitation. Integrative approaches combining long-term monitoring, biochemical profiling and population viability modelling are now advancing our ability to predict and manage eider populations under rapid environmental change.
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Population Dynamics of Eider Species publication trend
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Technical terms
Nest predation: The consumption or destruction of eggs or chicks by predators at the nesting site, reducing reproductive success.
Metabolomics: The large-scale study of small molecules (metabolites) within biological samples, used to infer physiological and stress responses.
Leslie matrix model: An age-structured population projection model that uses vital rates to predict growth, structure and viability over time.
Population viability: The probability that a population will persist or avoid extinction within a specified time frame under given conditions.
Persistent organic pollutants: Chemical substances that accumulate in organisms and the environment, potentially impairing health and reproductive performance.
References
- Long‐term data reveal contrasting impacts of native versus invasive nest predators in Iceland. Ecology Letters (2023).
- Body mass, mercury exposure, biochemistry and untargeted metabolomics of incubating common eiders (Somateria mollissima) in three Baltic colonies. Environment International (2020).
- Multiple stressors: modeling the effect of pollution, climate, and predation on viability of a sub‐arctic marine bird. Ecosphere (2018).
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