Seasonal variability in vulnerability for Cassin's auklets (Ptychoramphus aleuticus) exposed to microplastic pollution in the Canadian Pacific region

The Science of the Total Environment
Patrick D O'HaraPeter S Ross

Abstract

Marine plastic pollution is an emerging global conservation challenge, potentially impacting organisms at all trophic levels. However, currently it is unclear to what extent plastic pollution is impacting marine organisms at the population, species or multispecies level. In this study, we explore seasonal exposure (i.e., vulnerability) of Cassin's Auklet (Ptychoramphus aleuticus) to plastic pollution with exposure models during boreal summer and winter seasons. Based on these models, we infer exposure at the population level for this species, in the Canadian Pacific region where approximately 75% of the global population of this species breeds. The models quantify plastic exposure by determining seasonal core foraging areas and plastic concentrations found in those same areas. Core foraging areas were determined using a Generalized Additive Model based on at-sea observation data (collected year round: 1990-2010) and 50% Home Range Kernels based on aerial telemetry data (May and June 1999-2001). Plastic concentrations within these core areas were interpolated based on seawater microplastic concentrations from the summer of 2012. We found that during the boreal summer, Cassin's Auklets were exposed to relatively low concentration...Continue Reading

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Citations

Dec 13, 2019·Journal of Applied Toxicology : JAT·Xiaoru ChangMeng Tang
May 14, 2020·Journal of Environmental Science and Health. Part C, Toxicology and Carcinogenesis·Amrik Bhattacharya, S K Khare
Jul 17, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Alan J MearnsMary Ann Rempel-Hester
Nov 4, 2020·Environmental Science and Pollution Research International·Mahdi BanaeeAhmed Th A Ibrahim
Aug 8, 2020·The Science of the Total Environment·Peter S PuskicAlexander L Bond
Aug 17, 2021·Marine Pollution Bulletin·Tessa G Nania, Gary W Shugart

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