Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia

Abstract Freshwater plastic pollution is critically understudied in Southeast Asia (SEA). Recent modelling studies indicate that SEA rivers contribute vast quantities of plastic to the world’s oceans, however, these fail to capture the complexity of individual systems. We determine the volume of mis...

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Autores principales:	Alexander Matthew David Finnegan, Christos Gouramanis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/afd761c55f124ccd968cc1972c53a2a8
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id	oai:doaj.org-article:afd761c55f124ccd968cc1972c53a2a8
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spelling	oai:doaj.org-article:afd761c55f124ccd968cc1972c53a2a82021-12-02T12:11:12ZProjected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia10.1038/s41598-021-83064-92045-2322https://doaj.org/article/afd761c55f124ccd968cc1972c53a2a82021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83064-9https://doaj.org/toc/2045-2322Abstract Freshwater plastic pollution is critically understudied in Southeast Asia (SEA). Recent modelling studies indicate that SEA rivers contribute vast quantities of plastic to the world’s oceans, however, these fail to capture the complexity of individual systems. We determine the volume of mismanaged plastic waste (MPW) entering Tonle Sap Basin (TSB)—the largest freshwater lake–river system in SEA, between 2000 and 2030. Using economic, population and waste data at provincial and national levels, coupled with high resolution population and flood datasets, we estimate that ca. 221,700 tons of plastic entered between 2000 and 2020, and 282,300 ± 8700 tons will enter between 2021 and 2030. We demonstrate that policy interventions can reduce MPW up to 76% between 2021 and 2030. The most-stringent scenario would prevent 99% of annual MPW losses by 2030, despite substantially higher waste volumes and population. If successfully implemented, Cambodia will prevent significant losses in natural capital, material value and degradation in TSB worth at least US$4.8 billion, with additional benefits for the Mekong River and South China Sea.Alexander Matthew David FinneganChristos GouramanisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexander Matthew David Finnegan Christos Gouramanis Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia
description	Abstract Freshwater plastic pollution is critically understudied in Southeast Asia (SEA). Recent modelling studies indicate that SEA rivers contribute vast quantities of plastic to the world’s oceans, however, these fail to capture the complexity of individual systems. We determine the volume of mismanaged plastic waste (MPW) entering Tonle Sap Basin (TSB)—the largest freshwater lake–river system in SEA, between 2000 and 2030. Using economic, population and waste data at provincial and national levels, coupled with high resolution population and flood datasets, we estimate that ca. 221,700 tons of plastic entered between 2000 and 2020, and 282,300 ± 8700 tons will enter between 2021 and 2030. We demonstrate that policy interventions can reduce MPW up to 76% between 2021 and 2030. The most-stringent scenario would prevent 99% of annual MPW losses by 2030, despite substantially higher waste volumes and population. If successfully implemented, Cambodia will prevent significant losses in natural capital, material value and degradation in TSB worth at least US$4.8 billion, with additional benefits for the Mekong River and South China Sea.
format	article
author	Alexander Matthew David Finnegan Christos Gouramanis
author_facet	Alexander Matthew David Finnegan Christos Gouramanis
author_sort	Alexander Matthew David Finnegan
title	Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia
title_short	Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia
title_full	Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia
title_fullStr	Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia
title_full_unstemmed	Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia
title_sort	projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in southeast asia
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/afd761c55f124ccd968cc1972c53a2a8
work_keys_str_mv	AT alexandermatthewdavidfinnegan projectedplasticwastelossscenariosbetween2000and2030intothelargestfreshwaterlakesysteminsoutheastasia AT christosgouramanis projectedplasticwastelossscenariosbetween2000and2030intothelargestfreshwaterlakesysteminsoutheastasia
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Projected plastic waste loss scenarios between 2000 and 2030 into the largest freshwater-lake system in Southeast Asia

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