State of knowledge on current exposure, fate and potential health effects of contaminants in polar bears from the circumpolar Arctic

Autor: Bjarne Styrishave, Bjørn Munro Jenssen, Robert J. Letcher, Heli Routti, Jean-Pierre Desforges, Frank Rigét, Christian Sonne, Andrei N. Boltunov, Rune Dietz, Thea Bechshoft, Melissa A. McKinney, Sabrina Tartu, Tomasz Maciej Ciesielski, Adam D. Morris, Geir Wing Gabrielsen, Todd C. Atwood
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Pollution
Environmental Engineering
010504 meteorology & atmospheric sciences
Ursus maritimus
media_common.quotation_subject
PFAS
ENDOCRINE-DISRUPTING CHEMICALS
PEAS
chemistry.chemical_element
010501 environmental sciences
Pollutant
01 natural sciences
Emerging compounds
biology.animal
CHLORINATED-HYDROCARBON CONTAMINANTS
Animals
Environmental Chemistry
LONG-RANGE TRANSPORT
Waste Management and Disposal
0105 earth and related environmental sciences
media_common
geography
GLOBAL EMISSION INVENTORIES
geography.geographical_feature_category
biology
Arctic Regions
POLYBROMINATED DIPHENYL ETHERS
Persistent organic pollutants
SOUTHERN BEAUFORT SEA
Environmental Exposure
Circumpolar star
Mercury
3 DECADES 1983-2010
Arctic ice pack
POLYFLUOROALKYL SUBSTANCES PFASS
Mercury (element)
Arctic
chemistry
Bioaccumulation
Environmental chemistry
Environmental science
Environmental Pollutants
BONE-MINERAL DENSITY
Ursidae
Environmental Monitoring
Zdroj: Routti, H, Atwood, T C, Bechshoft, T, Boltunov, A, Ciesielski, T M, Desforges, J P, Dietz, R, Gabrielsen, G W, Jenssen, B M, Letcher, R J, McKinney, M A, Morris, A D, Rigét, F F, Sonne, C, Styrishave, B & Tartu, S 2019, ' State of knowledge on current exposure, fate and potential health effects of contaminants in polar bears from the circumpolar Arctic ', Science of the Total Environment, vol. 664, pp. 1063-1083 . https://doi.org/10.1016/j.scitotenv.2019.02.030
Routti, H, Atwood, T C, Bechshoft, T, Boltunov, A, Ciesielski, T M, Desforges, J-P, Dietz, R, Gabrielsen, G, Jenssen, B M, Letcher, R J, McKinney, M A, Morris, A D, Riget, F F, Sonne, C, Styrishave, B & Tartu, S 2019, ' State of knowledge on current exposure, fate and potential health effects of contaminants in polar bears from the circumpolar Arctic ', Science of the Total Environment, vol. 664, pp. 1063-1083 . https://doi.org/10.1016/j.scitotenv.2019.02.030
DOI: 10.1016/j.scitotenv.2019.02.030
Popis: The polar bear (Ursus maritimus) is among the Arctic species exposed to the highest concentrations of long-range transported bioaccumulative contaminants, such as halogenated organic compounds and mercury. Contaminant exposure is considered to be one of the largest threats to polar bears after the loss of their Arctic sea ice habitat due to climate change. The aim of this review is to provide a comprehensive summary of current exposure, fate, and potential health effects of contaminants in polar bears from the circumpolar Arctic required by the Circumpolar Action Plan for polar bear conservation. Overall results suggest that legacy persistent organic pollutants (POPs) including polychlorinated biphenyls, chlordanes and perfluorooctane sulfonic acid (PFOS), followed by other perfluoroalkyl compounds (e.g. carboxylic acids, PFCAs) and brominated flame retardants, are still the main compounds in polar bears. Concentrations of several legacy POPs that have been banned for decades in most parts of the world have generally declined in polar bears. Current spatial trends of contaminants vary widely between compounds and recent studies suggest increased concentrations of both POPs and PFCAs in certain sub populations. Correlative held studies, supported by in vitro studies, suggest that contaminant exposure disrupts circulating levels of thyroid hormones and lipid metabolism, and alters neurochemistry in polar bears. Additionally, field and in vitro studies and risk assessments indicate the potential for adverse impacts to polar bear immune functions from exposure to certain contaminants. (C) 2019 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE
Externí odkaz: