Kelp forest food webs as hot spots for the accumulation of microplastic and polybrominated diphenyl ether pollutants
2024; Elsevier BV; Volume: 257; Linguagem: Inglês
10.1016/j.envres.2024.119299
ISSN1096-0953
AutoresEduardo Antonio Lozano-Hernández, Nancy Ramírez‐Álvarez, Lorena M. Rios Mendoza, José Vinicio Macías‐Zamora, Adán Mejía‐Trejo, Rodrigo Beas‐Luna, Félix Augusto Hernández-Guzmán,
Tópico(s)Coastal and Marine Management
ResumoKelp forests (KFs) are one of the most significant marine ecosystems in the planet. They serve as a refuge for a wide variety of marine species of ecological and economic importance. Additionally, they aid with carbon sequestration, safeguard the coastline, and maintain water quality. Microplastic (MP) and polybrominated diphenyl ethers (PBDEs) concentrations were analyzed across trophic levels in KFs around Todos Santos Bay. Spatial variation patterns were compared at three sites in 2021 and temporal change at Todos Santos Island (TSI) in 2021 and 2022. We analyzed these MPs and PBDEs in water, primary producers (Macrocystis pyrifera), grazers (Strongylocentrotus purpuratus), predators (Semicossyphus pulcher), and kelp detritus. MPs were identified in all samples (11 synthetic and 1 semisynthetic polymer) and confirmed using Fourier-transform infrared microspectroscopy-attenuated total reflectance (μ-FTIR-ATR). The most abundant type of MP is polyester fibers. Statistically significant variations in MP concentration were found only in kelps, with the greatest average concentrations in medium-depth kelps from TSI in 2022 (0.73 ± 0.58 MP g
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