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Quantification of Biodriven Transfer of Per- and Polyfluoroalkyl Substances from the Aquatic to the Terrestrial Environment via Emergent Insects

Koch, Alina and Jonsson, Micael and Yeung, Leo W. Y. and Karrman, Anna and Ahrens, Lutz and Ekblad, Alf and Wang, Thanh (2021). Quantification of Biodriven Transfer of Per- and Polyfluoroalkyl Substances from the Aquatic to the Terrestrial Environment via Emergent Insects. Environmental Science and Technology. 55 , 7900-7909
[Research article]

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Abstract

Emergent aquatic insects are important food subsidies to riparian food webs but can also transfer waterborne contaminants to the terrestrial environment. This study aimed to quantitatively assess this biodriven transfer for per- and polyfluoroalkyl substances (PFAS). Aquatic insect larvae, emergent aquatic insects, terrestrial consumers, sediment, and water were collected from a contaminated lake and stream and an uncontaminated pond, and analyzed for PFAS and stable isotopes of carbon and nitrogen. Top predators in this study were spiders, which showed the highest average Sigma(24)PFAS concentration of 1400 +/- 80 ng g(-1) dry weight (dw) at the lake and 630 ng g(-1) dw at the stream. The transfer of PFAS from the lake to the riparian zone, via deposition of emergent aquatic insects, was 280 ng Sigma 24PFAs m(-2) d(-1) in 2017 and only 23 ng Sigma 24PFAs m(-2) d(-1) in 2018. Because of higher production of emergent aquatic insects, the lake had higher PFAS transfer and higher concentrations in terrestrial consumers compared to the stream, despite the stream having higher PFAS concentration in water and aquatic insect larvae. Our results indicate that biodriven transfer of PFAS from the aquatic systems and subsequent uptake in terrestrial food webs depend more on emergence amounts, i.e., aquatic prey availability, rather than on PFAS concentrations in water and aquatic prey.

Authors/Creators:Koch, Alina and Jonsson, Micael and Yeung, Leo W. Y. and Karrman, Anna and Ahrens, Lutz and Ekblad, Alf and Wang, Thanh
Title:Quantification of Biodriven Transfer of Per- and Polyfluoroalkyl Substances from the Aquatic to the Terrestrial Environment via Emergent Insects
Series Name/Journal:Environmental Science and Technology
Year of publishing :2021
Volume:55
Page range:7900-7909
Number of Pages:10
Publisher:AMER CHEMICAL SOC
ISSN:0013-936X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:PFAS, biodriven transfer, emergent aquatic insects, terrestrial consumers
URN:NBN:urn:nbn:se:slu:epsilon-p-113086
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113086
Additional ID:
Type of IDID
DOI10.1021/acs.est.0c07129
Web of Science (WoS)000663939900015
ID Code:25048
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:26 Aug 2021 10:25
Metadata Last Modified:26 Aug 2021 10:31

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