The role of Amazon on the transport and as a source of microplastics (MPs) to the ocean is uncertain. This study is an assessment on the distribution of MPs and microfibers (MFs) in a portion of the Amazon delta. Guajará bay is a potential source for surrounding waters, since a metropolis is located at the right margin. Surface water samples were collected during the dry and rainy season of 2014/2015 at six stations. MP and MF abundance ranged from 218 to 5529.98 (1565.01 ± 196.94) particles·m−3. Transparent, white and blue particles were frequent. Higher values were detected on the right, urbanized margin of the bay (p = 0.0124). Most of the particles were anthropogenic cellulose fibers (68.8 %). Polyethylene terephthalate (52.9 %) and polyamide (34.4 %) were the dominant polymers. Our results indicate higher MP and MF abundances near to the potential source, the urban nucleus, and related to local hydrodynamic characteristics.
Microplastics and microfibers in the Guajará Bay, Amazon delta: Potential sources and variability / Santos, Luana Francy Oliveira; Neu, Vania; Monteiro, Raqueline Cristina Pereira; Kütter, Vinicius Tavares; Morais, Leonardo Mario Siqueira; Soares-Gomes, Abilio; Chelazzi, David; Giarrizzo, Tommaso; Martinelli Filho, José Eduardo. - In: MARINE POLLUTION BULLETIN. - ISSN 0025-326X. - STAMPA. - 195:(2023), pp. 1-7. [10.1016/j.marpolbul.2023.115525]
Microplastics and microfibers in the Guajará Bay, Amazon delta: Potential sources and variability
Chelazzi, David;
2023
Abstract
The role of Amazon on the transport and as a source of microplastics (MPs) to the ocean is uncertain. This study is an assessment on the distribution of MPs and microfibers (MFs) in a portion of the Amazon delta. Guajará bay is a potential source for surrounding waters, since a metropolis is located at the right margin. Surface water samples were collected during the dry and rainy season of 2014/2015 at six stations. MP and MF abundance ranged from 218 to 5529.98 (1565.01 ± 196.94) particles·m−3. Transparent, white and blue particles were frequent. Higher values were detected on the right, urbanized margin of the bay (p = 0.0124). Most of the particles were anthropogenic cellulose fibers (68.8 %). Polyethylene terephthalate (52.9 %) and polyamide (34.4 %) were the dominant polymers. Our results indicate higher MP and MF abundances near to the potential source, the urban nucleus, and related to local hydrodynamic characteristics.File | Dimensione | Formato | |
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