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Biotransport of metallic trace elements from marine to terrestrial ecosystems by seabirds

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/76475

Title: Biotransport of metallic trace elements from marine to terrestrial ecosystems by seabirds
Authors: Shoji, A. Browse this author
Elliott, K. H. Browse this author
Aris-Brosou, S. Browse this author
Mizukawa, H. Browse this author
Nakayama, S. M. M. Browse this author
Ikenaka, Y. Browse this author
Ishizuka, M. Browse this author →KAKEN DB
Kuwae, T. Browse this author
Watanabe, K. Browse this author
Escoruela Gonzalez, J. Browse this author
Watanuki, Yutaka Browse this author →KAKEN DB
Keywords: Biological transport
Rhinoceros auklet
Mercury
Bioaccumulation
Machine learning
Issue Date: Jan-2019
Publisher: John Wiley & Sons
Journal Title: Environmental toxicology and chemistry
Volume: 38
Issue: 1
Start Page: 106
End Page: 114
Publisher DOI: 10.1002/etc.4286
Abstract: Physical systems, such as currents and winds, have traditionally been considered responsible for transporting contaminants. Although evidence is mounting that animals play a role in this process through their movements, we still know little about how such contaminant biotransport occurs and the extent of effects at deposition sites. In the present study, we address this question by studying how rhinoceros auklets (Cerorhinca monocerata), a seabird that occurs in immense colonies (∼300 000 pairs at our study site, Teuri Island), affect contaminant levels at their colony and at nearby sites. More specifically, we hypothesize that contaminants are transported and deposited by seabirds at their colony and that these contaminants are passed on locally to the terrestrial ecosystem. To test this hypothesis, we analyzed the concentration of 9 heavy metal and metalloids, as well as δ13C and δ15N stable isotopes, in bird tissues, plants, and soil, both within and outside of the colony. The results show that rhinoceros auklets transport marine‐derived mercury (Hg), possibly from their wintering location, and deposit Hg via their feces at their breeding site, thereby contaminating plants and soils within the breeding colony. The present study confirms not only that animals can transport contaminants from marine to terrestrial ecosystems, potentially over unexpectedly long distances, but also that bird tissues contribute locally to plant contamination.
Rights: This is the peer reviewed version of the following article: Shoji, A. , Elliott, K. , Aris‐Brosou, S. , Mizukawa, H. , Nakayama, S. , Ikenaka, Y. , Ishizuka, M. , Kuwae, T. , Watanabe, K. , Escoruela Gonzalez, J. and Watanuki, Y. (2019), Biotransport of metallic trace elements from marine to terrestrial ecosystems by seabirds. Environ Toxicol Chem, 38: 106-114, which has been published in final form at https://doi.org/10.1002/etc.4286. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
URI: http://hdl.handle.net/2115/76475
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 綿貫 豊

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