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Ecotoxicological responses to chalcopyrite exposure in a proxy for deep-sea hydrothermal vent shrimp: implications for seafloor massive sulphide mining

Ecotoxicological responses to chalcopyrite exposure in a proxy for deep-sea hydrothermal vent shrimp: implications for seafloor massive sulphide mining
Ecotoxicological responses to chalcopyrite exposure in a proxy for deep-sea hydrothermal vent shrimp: implications for seafloor massive sulphide mining
© 2018 Informa UK Limited, trading as Taylor & Francis Group Deep-sea mineral prospecting has raised concerns regarding potential ecotoxicological impacts of deep-sea mineral extraction. Although metal mineral phases are predicted to exhibit low bioavailability, few data explore the relative toxicity of mineral phases and dissolved constituent metals. Acute 96 h chalcopyrite (CuFeS 2 ) ( <250 µm grain size) exposures using the shallow-water ecophysiological model organism Palaemon varians as an ecotoxicological proxy for deep-sea hydrothermal vent shrimp revealed no effect in both lethal and sublethal assays up to 2.888 g L −1 , suggesting that chalcopyrite is not bioavailable. Deep-sea species, therefore, appear at greater ecotoxicological risk from dissolved metals during seafloor massive sulphide (SMS) mining. Consequently, an approach combining modelling the release, and spatial and temporal dilution of dissolved metals during SMS mining, with data on sublethal effects of dissolved metals on shallow-water proxies, may best constrain the potential ecotoxicological impacts of SMS mining, and deliver ecotoxicological threshold concentrations for active SMS extraction.
Aquatic toxicology, chalcopyrite, deep-sea mining, heavy metal, metal bioavailability
0275-7540
1-6
Brown, Alastair
909f34db-bc9c-403f-ba8f-31aee1c00161
Hauton, Chris
7706f6ba-4497-42b2-8c6d-00df81676331
Brown, Alastair
909f34db-bc9c-403f-ba8f-31aee1c00161
Hauton, Chris
7706f6ba-4497-42b2-8c6d-00df81676331

Brown, Alastair and Hauton, Chris (2018) Ecotoxicological responses to chalcopyrite exposure in a proxy for deep-sea hydrothermal vent shrimp: implications for seafloor massive sulphide mining. Chemistry and Ecology, 1-6. (doi:10.1080/02757540.2018.1427231).

Record type: Article

Abstract

© 2018 Informa UK Limited, trading as Taylor & Francis Group Deep-sea mineral prospecting has raised concerns regarding potential ecotoxicological impacts of deep-sea mineral extraction. Although metal mineral phases are predicted to exhibit low bioavailability, few data explore the relative toxicity of mineral phases and dissolved constituent metals. Acute 96 h chalcopyrite (CuFeS 2 ) ( <250 µm grain size) exposures using the shallow-water ecophysiological model organism Palaemon varians as an ecotoxicological proxy for deep-sea hydrothermal vent shrimp revealed no effect in both lethal and sublethal assays up to 2.888 g L −1 , suggesting that chalcopyrite is not bioavailable. Deep-sea species, therefore, appear at greater ecotoxicological risk from dissolved metals during seafloor massive sulphide (SMS) mining. Consequently, an approach combining modelling the release, and spatial and temporal dilution of dissolved metals during SMS mining, with data on sublethal effects of dissolved metals on shallow-water proxies, may best constrain the potential ecotoxicological impacts of SMS mining, and deliver ecotoxicological threshold concentrations for active SMS extraction.

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Brown_Hauton_Chem_Ecol_revised - Accepted Manuscript
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Accepted/In Press date: 29 December 2017
e-pub ahead of print date: 30 January 2018
Keywords: Aquatic toxicology, chalcopyrite, deep-sea mining, heavy metal, metal bioavailability

Identifiers

Local EPrints ID: 418334
URI: https://eprints.soton.ac.uk/id/eprint/418334
ISSN: 0275-7540
PURE UUID: f4bf3d31-ec5d-4089-b83e-d74cca7bf7b2
ORCID for Chris Hauton: ORCID iD orcid.org/0000-0002-2313-4226

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Date deposited: 28 Feb 2018 17:30
Last modified: 14 Mar 2019 05:14

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Author: Alastair Brown
Author: Chris Hauton ORCID iD

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