Microplastics associated with stranded macroalgae on an impacted estuarine beach, Rio de Janeiro, Brazil.

Autor: Lima LVS; Postgraduation Program in Marine Biology and coastal Environments - Federal Fluminense University, Niteroi, Brazil., do Nascimento RF; Laboratory of Phycology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil., de Barros-Barreto MBB; Laboratory of Phycology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil., Silva AA; Department of Chemical Processes, Institute of Chemistry, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil., Furtado CRG; Department of Chemical Processes, Institute of Chemistry, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil., Figueiredo GM; Postgraduation Program in Marine Biology and coastal Environments - Federal Fluminense University, Niteroi, Brazil; Department of Marine Biology, Institute of Biology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address: gmandali@biologia.ufrj.br.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Sep; Vol. 206, pp. 116772. Date of Electronic Publication: 2024 Jul 27.
DOI: 10.1016/j.marpolbul.2024.116772
Abstrakt: Microplastics (MPs) are contaminants widely distributed in marine ecosystems. Only few studies approached MP interactions with marine plants, which are considered potential traps for MPs. Here, we determined MPs' densities and types associated with stranded macroalgae on a eutrophic beach in Guanabara Bay. Our results showed that red algae exhibited higher MP densities (1.48 MPs g -1 ), possibly due to their more branched thalli, than green algae (0.27 MPs g -1 ). The predominant MP types were blue and white fragments <3 mm in size and polymers were classified as polyethylene and polyvinyl chloride in fragments, and polypropylene in fibers. The higher densities of MPs in algae seemed to be influenced by the inner bay waters. The densities of MPs associated with algae from Guanabara Bay surpassed those reported in other studies. High MPs densities increase the chances that organisms associated with algae entangle or ingest MPs, impacting their health and survival.
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 © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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