Perfluorinated and chlorinated pollutants as predictors of demographic parameters in an endangered seabird

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• 作者：Jan Ove Bustnes ; Kjell Einar Erikstad ; Svein-Hå ; kon Lorentsen ; Dorte Herzke
• 关键词：POPs ; Principal component analysis ; PFAS ; PFOS ; Survival ; Chick defense
• 刊名：Environmental Pollution
• 出版年：2008
• 出版时间：November 2008
• 年：2008
• 卷：156
• 期：2
• 页码：417-424
• 全文大小：201 K

文摘

Despite global occurrence of several perfluorinated compounds (PFCs) the potential ecological effects of such substances on natural populations are not known. In endangered lesser black-backed gulls (Larus fuscus fuscus) on the Norwegian Coast, the blood concentrations of PFCs were as high as legacy organochlorines (OCs), and here we examined whether PFCs show associations similar to those of OCs to factors potentially affecting population growth, by evaluating relationships between contaminant concentrations and demographic parameters (reproductive performance and the probability of adults returning between breeding seasons). PFCs were not adversely associated with demographic parameters, while the most persistent OCs; notably PCB and p,p′-DDE, were adversely associated with early chick survival, and adult return rate. This study thus suggests that when the concentrations of PFCs and OCs are of similar magnitude in a gull population, OCs are more likely to cause adverse ecological effects.