Trace element bioaccumulation in hypersaline ecosystems and implications of a global invasion.

Autor: Pais-Costa AJ; University of Coimbra, Marine and Environmental Sciences Centre (MARE), Department of Life Sciences, 3004-517 Coimbra, Portugal. Electronic address: juliana.pais.costa@gmail.com., Sánchez MI; Wetland Ecology Department, Estación Biológica de Doñana, EBD-CSIC, 41092 Seville, Spain; Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012 Seville, Spain., Taggart MA; Environmental Research Institute, University of the Highlands and Islands, Thurso, Scotland KW14 7JD, UK., Green AJ; Wetland Ecology Department, Estación Biológica de Doñana, EBD-CSIC, 41092 Seville, Spain., Hortas F; Instituto Universitario de Investigación Marina (INMAR), Campus de Excelencia Internacional/Global del Mar (CEI·MAR), Universidad de Cádiz, Av. República Saharaui s/n, 11510 Puerto Real, Cádiz, Spain., Vinagre PA; WavEC Offshore Renewables, Edifício Diogo Cão, Doca de Alcântara, Lisbon, Portugal., Marques JC; University of Coimbra, Marine and Environmental Sciences Centre (MARE), Department of Life Sciences, 3004-517 Coimbra, Portugal., Martinez-Haro M; Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal (IRIAF), Centro de Investigación Agroambiental El Chaparrillo, Ciudad Real, Spain.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2021 Dec 15; Vol. 800, pp. 149349. Date of Electronic Publication: 2021 Jul 31.
DOI: 10.1016/j.scitotenv.2021.149349
Abstrakt: Hypersaline ecosystems are under increasing threat due to anthropogenic pressures such as environmental pollution and biological invasions. Here we address the ecotoxicological implications of the Artemia franciscana (Crustacea) invasion in saltpans of southern Spain. This North American species is causing the extinction of native Artemia populations in many parts of the globe. The bioaccumulation of trace elements (As, Cd, Cu, Co, Cr, Mn, Ni, Pb and Zn) in native populations (A. parthenogenetica) from Cabo de Gata and Odiel saltpans and invasive Artemia from Cádiz saltpan was studied at different salinities. Furthermore, in Odiel, the most polluted study site, we also analysed the bioaccumulation of trace elements by Chironomus salinarius larvae (Diptera) and Ochthebius notabilis adults (Coleoptera). High levels of trace elements were detected in the studied saltpans, many of them exceeding the recommended threshold guidelines for aquatic life. Bioaccumulation of trace elements by Artemia was lowest at the highest salinity. The invasive A. franciscana showed higher potential to bioaccumulate trace elements than its native counterpart (in particular for As, Cd, Ni and Cr). In Odiel, O. notabilis stood out as showing the highest potential to bioaccumulate As and Cu. Results showed that the shift from a native to an alien Artemia species with a higher bioaccumulation capacity may increase the transfer of trace elements in hypersaline food webs, especially for waterbirds that depend on Artemia as food. Thus, our study identifies an indirect impact of the Artemia franciscana invasion that had not previously been recognised.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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