The response of microphytobenthos to physical disturbance, herbicide, and titanium dioxide nanoparticle exposure.

Autor: Rimmer JEV; Sediment Ecology Research Group, Scottish Oceans Institute, School of Biology, University of St Andrews, East Sands, St. Andrews KY16 8LB, UK. Electronic address: jr49@st-andrews.ac.uk., Hubas C; Biologie des Organismes et Ecosystèmes Aquatiques (UMR 8067 BOREA), Muséum National d'Histoire Naturelle, IRD, SU, CNRS, UA, UCN; Station Marine de Concarneau, FR-29900 Concarneau, France., Wyness AJ; Sediment Ecology Research Group, Scottish Oceans Institute, School of Biology, University of St Andrews, East Sands, St. Andrews KY16 8LB, UK; Scottish Association for Marine Science, Scottish Marine Institute, Oban PA37 1QA, United Kingdom., Jesus B; UR 2160, ISOMer, University of Nantes, Nantes, France., Hartley M; Sediment Ecology Research Group, Scottish Oceans Institute, School of Biology, University of St Andrews, East Sands, St. Andrews KY16 8LB, UK., Blight AJ; Sediment Ecology Research Group, Scottish Oceans Institute, School of Biology, University of St Andrews, East Sands, St. Andrews KY16 8LB, UK., Prins A; UR 2160, ISOMer, University of Nantes, Nantes, France., Paterson DM; Sediment Ecology Research Group, Scottish Oceans Institute, School of Biology, University of St Andrews, East Sands, St. Andrews KY16 8LB, UK.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2022 Dec; Vol. 185 (Pt B), pp. 114348. Date of Electronic Publication: 2022 Nov 23.
DOI: 10.1016/j.marpolbul.2022.114348
Abstrakt: The microphytobenthos that form transient biofilms are important primary producers in intertidal, depositional habitats, yet we have only a limited understanding of how they respond to the cumulative impacts of the growing range of anthropogenic stressors to which they are exposed. We know even less about how the temporal alignment of exposure - such as duration and exposure sequence - may affect the response. Estuarine biofilms were cultured in mesocosms and exposed to the herbicide glyphosate and titanium dioxide (TiO 2 ) nanoparticles in different sequences (glyphosate-first or TiO 2 -first), as well as in the presence and absence of physical disturbance. We found that at environmentally realistic chemical concentrations, the order of exposure was less important than the total stressor scenario in terms of impacts on key functional attributes and diatom community structure. Physical disturbance did not have an impact on functional attributes, regardless of exposure sequence.
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 © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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