Microplastics in a lagoon ecosystem of the Nicaraguan humid tropics and their impact on Crassostrea rhizophorae populations

Authors

DOI:

https://doi.org/10.5377/esteli.v13i50.18483

Keywords:

Lagoon ecosystem, impact on biota, microplastics, sediment

Abstract

The objective of this study was to identify microplastics in water, sand, sediment and biota (Crassostrea rhizophorae) in the Houn Sond bar, south of Bluefields lagoon, Nicaragua. Since there are no previous studies to reference the effects, this analysis provides fundamental data. Water samples were obtained using a 65 µm Bongo net at a speed of 3 km/h, with three replicates; sand samples were obtained using a transect along the high tide coastline; sediment samples were obtained using a 6“ x 6” inch Van Veen dredge; and oyster samples were obtained from randomly identified banks. Microplastic identification was performed by water saturation with sodium chloride and stereoscopic observation, while oyster samples were analyzed by chemical digestion with 30% H2O2. Out of 1,296.073 m³ of filtered water, 0.475 g of microplastics and a 0.022 g rubber particle were identified, the most abundant color being off-white with 0.329 g. In the sand, 23.282 g of microplastics were found, with a higher presence of off-white (13.473 g). No microplastics were observed in the sediment or oyster samples.

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Published

08-08-2024

How to Cite

Ebanks Mongalo, B. F., Rivas Suazo, E. G., Siu Estrada, E. A., & Flores-Pacheco, J. A. (2024). Microplastics in a lagoon ecosystem of the Nicaraguan humid tropics and their impact on Crassostrea rhizophorae populations. Revista Científica Estelí, 13(50), 198–214. https://doi.org/10.5377/esteli.v13i50.18483

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Section

ENVIRONMENTAL SCIENCES

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