Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results

Microplastic (<5 mm plastic pieces) pollution is a worldwide serious problem, particularly in terrestrial ecosystems. The presence and abundance of such contaminants in tropical areas are unknown, despite their potentially harmful effects on human health and biodiversity. Tropical lowland areas o...

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Autores principales:	Jonás Álvarez-Lopeztello, Celerino Robles, Rafael F. del Castillo
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Disturbance Soil pollution Soil ecology Terrestrial ecosystems Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/4ae96d80c71544948e9ad9b49fc63996
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spelling	oai:doaj.org-article:4ae96d80c71544948e9ad9b49fc639962021-12-01T04:34:34ZMicroplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results1470-160X10.1016/j.ecolind.2020.107084https://doaj.org/article/4ae96d80c71544948e9ad9b49fc639962021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20310232https://doaj.org/toc/1470-160XMicroplastic (<5 mm plastic pieces) pollution is a worldwide serious problem, particularly in terrestrial ecosystems. The presence and abundance of such contaminants in tropical areas are unknown, despite their potentially harmful effects on human health and biodiversity. Tropical lowland areas often are densely populated by humans. However, the level of microplastic contamination in human-modified tropical ecosystems remains unknown. In the tropical lowland coastal plain of the Gulf of Mexico, we compared the concentration and particle size distribution of soil microplastics in five contiguous ecosystems: a neotropical rainforest, a native savanna, two pine plantations, one with the understory removed and the other with the understory left intact, and a human-induced grassland used for cattle grazing. Microplastic extraction was performed using the density separation and filtration method. Microplastics (only fibers and fragments) were present in the soils of all the studied ecosystems. We do not detect the presence of films and pellets. We found between 1.53 and 1.49 (g−1 dry soil) particles of fibers and fragments. Microplastics from 150 to 500 µm were the most common, whereas those from 40 to 60 µm were the rarest. The concentration of fibers and fragments was significantly different among the studied ecosystems, being higher in the pasture than in the tropical rainforest, the pine plantations, and the savanna, which displayed similar concentrations. Microplastics (fibers and fragments) appear to increase as the levels of clay and sand increased. The observed high abundance of microplastic in tropical lowland areas warrants further studies on their abundance and ecosystem impact.Jonás Álvarez-LopeztelloCelerino RoblesRafael F. del CastilloElsevierarticleDisturbanceSoil pollutionSoil ecologyTerrestrial ecosystemsEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 107084- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Disturbance Soil pollution Soil ecology Terrestrial ecosystems Ecology QH540-549.5
spellingShingle	Disturbance Soil pollution Soil ecology Terrestrial ecosystems Ecology QH540-549.5 Jonás Álvarez-Lopeztello Celerino Robles Rafael F. del Castillo Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results
description	Microplastic (<5 mm plastic pieces) pollution is a worldwide serious problem, particularly in terrestrial ecosystems. The presence and abundance of such contaminants in tropical areas are unknown, despite their potentially harmful effects on human health and biodiversity. Tropical lowland areas often are densely populated by humans. However, the level of microplastic contamination in human-modified tropical ecosystems remains unknown. In the tropical lowland coastal plain of the Gulf of Mexico, we compared the concentration and particle size distribution of soil microplastics in five contiguous ecosystems: a neotropical rainforest, a native savanna, two pine plantations, one with the understory removed and the other with the understory left intact, and a human-induced grassland used for cattle grazing. Microplastic extraction was performed using the density separation and filtration method. Microplastics (only fibers and fragments) were present in the soils of all the studied ecosystems. We do not detect the presence of films and pellets. We found between 1.53 and 1.49 (g−1 dry soil) particles of fibers and fragments. Microplastics from 150 to 500 µm were the most common, whereas those from 40 to 60 µm were the rarest. The concentration of fibers and fragments was significantly different among the studied ecosystems, being higher in the pasture than in the tropical rainforest, the pine plantations, and the savanna, which displayed similar concentrations. Microplastics (fibers and fragments) appear to increase as the levels of clay and sand increased. The observed high abundance of microplastic in tropical lowland areas warrants further studies on their abundance and ecosystem impact.
format	article
author	Jonás Álvarez-Lopeztello Celerino Robles Rafael F. del Castillo
author_facet	Jonás Álvarez-Lopeztello Celerino Robles Rafael F. del Castillo
author_sort	Jonás Álvarez-Lopeztello
title	Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results
title_short	Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results
title_full	Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results
title_fullStr	Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results
title_full_unstemmed	Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results
title_sort	microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of oaxaca, mexico: preliminary results
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/4ae96d80c71544948e9ad9b49fc63996
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Microplastic pollution in neotropical rainforest, savanna, pine plantations, and pasture soils in lowland areas of Oaxaca, Mexico: Preliminary results

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