Sammendrag
The majority of the world's seabirds show substantial population declines, but a detailed understanding of the phenomenon is lacking. A potentially important mechanism that has received momentum lately is nest predation. This study aimed to assess the population viability of a threatened population of the lesser black-backed gull Larus fuscus fuscus under different scenarios for nest predation and environmental conditions. We merged results from statistical analyses of 16 years of empirical data with a Leslie model, emphasising the impact of predation at the nesting stage. In the model, we quantified the effect of multiple stressors on the viability of the lesser black-backed gull according to the IUCN Red List's 'Vulnerable' criteria (30% reductions in population size over
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