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Tytuł:
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Chemical contamination alters the interactions between bacteria and phytoplankton.
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Autorzy:
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Pringault O; Aix Marseille Université, Université de Toulon, CNRS, IRD, MIO UM 110, 13288, Marseille, France; MARBEC Univ Montpellier, IRD, Ifremer, Montpellier, France; Faculté des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Bizerte, France. Electronic address: .
Bouvy M; MARBEC Univ Montpellier, IRD, Ifremer, Montpellier, France.
Carre C; MARBEC Univ Montpellier, IRD, Ifremer, Montpellier, France.
Mejri K; Faculté des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Bizerte, France.
Bancon-Montigny C; UMR 5569 HydroSciences HSM Univ Montpellier, CNRS, IRD CC57, 34090, Montpellier, Cedex 5, France.
Gonzalez C; IMT Mines Alès, 6 Avenue de Clavières, 30319, Alès Cedex, France.
Leboulanger C; MARBEC Univ Montpellier, IRD, Ifremer, Montpellier, France.
Hlaili AS; Faculté des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Bizerte, France; Laboratoire d'Ecologie, de Biologie et de Physiologie des Organismes Aquatiques, LR18ES41, Université de Tunis El Manar, Tunis, France.
Goni-Urriza M; Universite de Pau et des Pays de L'Adour, E2S UPPA, CNRS, IPREM, 64000, Pau, France.
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Źródło:
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Chemosphere [Chemosphere] 2021 Sep; Vol. 278, pp. 130457. Date of Electronic Publication: 2021 Mar 31.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: Oxford : Elsevier Science Ltd
Original Publication: Oxford, New York, : Pergamon Press.
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MeSH Terms:
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Phytoplankton*
Trace Elements*
Bacteria ; Ecosystem ; Seawater
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Contributed Indexing:
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Keywords: Coastal ecosystems; Pesticides; Phytoplankton–bacterioplankton networks; Trace metal elements
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Substance Nomenclature:
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0 (Trace Elements)
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Entry Date(s):
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Date Created: 20210615 Date Completed: 20210616 Latest Revision: 20210616
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Update Code:
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20240104
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DOI:
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10.1016/j.chemosphere.2021.130457
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PMID:
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34126687
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Bacteria and phytoplankton are key players in aquatic ecosystem functioning. Their interactions mediate carbon transfer through the trophic web. Chemical contamination can alter the function and diversity of phytoplankton and bacterioplankton, with important consequences for ecosystem functioning. The aim of the present study was to assess the impact of chemical contamination on the interactions between both biological compartments. Two contrasting marine coastal ecosystems, offshore waters and lagoon waters, were exposed to chemical contamination (artificial or produced from resuspension of contaminated sediment) in microcosms in four seasons characterized by distinct phytoplankton communities. Offshore waters were characterized by a complex phytoplankton-bacterioplankton network with a predominance of positive interactions between both compartments, especially with Haptophyta, Cryptophyta, and dinoflagellates. In contrast, for lagoon waters, the phytoplankton-bacterioplankton network was simpler with a prevalence of negative interactions with Ochrophyta, Cryptophyta, and flagellates. Contamination with an artificial mix of pesticides and trace metal elements resulted in a decrease in the number of interactions between phytoplankton and bacterioplankton, especially for offshore waters. Resuspension of contaminated sediment also altered the interactions between both compartments. The release of nutrients stored in the sediment allowed the growth of nutrient limited phytoplankton species with marked consequences for the interactions with bacterioplankton, with a predominance of positive interactions, whereas in lagoon waters, negative interactions were mostly observed. Overall, this study showed that chemical contamination and sediment resuspension resulted in significant effects on phytoplankton-bacterioplankton interactions that can alter the functioning of anthropogenic coastal ecosystems.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
