A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water Hyacinths

River plastic pollution is an environmental challenge of growing concern. However, there are still many unknowns related to the principal drivers of river plastic transport. Floating aquatic vegetation, such as water hyacinths, have been found to aggregate and carry large amounts of plastic debris i...

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Main Authors: Louise Schreyers, Tim van Emmerik, Thanh Luan Nguyen, Ngoc-Anh Phung, Thuy-Chung Kieu-Le, Evelien Castrop, Thanh-Khiet L. Bui, Emilie Strady, Sarian Kosten, Lauren Biermann, Sanne J.P. van den Berg, Martine van der Ploeg
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-07-01
Series:Frontiers in Environmental Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fenvs.2021.716516/full
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author Louise Schreyers
Tim van Emmerik
Thanh Luan Nguyen
Ngoc-Anh Phung
Thuy-Chung Kieu-Le
Thuy-Chung Kieu-Le
Evelien Castrop
Thanh-Khiet L. Bui
Emilie Strady
Sarian Kosten
Lauren Biermann
Sanne J.P. van den Berg
Martine van der Ploeg
author_facet Louise Schreyers
Tim van Emmerik
Thanh Luan Nguyen
Ngoc-Anh Phung
Thuy-Chung Kieu-Le
Thuy-Chung Kieu-Le
Evelien Castrop
Thanh-Khiet L. Bui
Emilie Strady
Sarian Kosten
Lauren Biermann
Sanne J.P. van den Berg
Martine van der Ploeg
author_sort Louise Schreyers
collection DOAJ
description River plastic pollution is an environmental challenge of growing concern. However, there are still many unknowns related to the principal drivers of river plastic transport. Floating aquatic vegetation, such as water hyacinths, have been found to aggregate and carry large amounts of plastic debris in tropical river systems. Monitoring the entrapment of plastics in hyacinths is therefore crucial to answer the relevant scientific and societal questions. Long-term monitoring efforts are yet to be designed and implemented at large scale and various field measuring techniques can be applied. Here, we present a field guide on available methods that can be upscaled in space and time, to characterize macroplastic entrapment within floating vegetation. Five measurement techniques commonly used in plastic and vegetation monitoring were applied to the Saigon river, Vietnam. These included physical sampling, Unmanned Aerial Vehicle imagery, bridge imagery, visual counting, and satellite imagery. We compare these techniques based on their suitability to derive metrics of interest, their relevancy at different spatiotemporal scales and their benefits and drawbacks. This field guide can be used by practitioners and researchers to design future monitoring campaigns and to assess the suitability of each method to investigate specific aspects of macroplastic and floating vegetation interactions.
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spelling doaj.art-4ce24207b04c45409db7c8782513f0ff2022-12-21T22:16:46ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2021-07-01910.3389/fenvs.2021.716516716516A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water HyacinthsLouise Schreyers0Tim van Emmerik1Thanh Luan Nguyen2Ngoc-Anh Phung3Thuy-Chung Kieu-Le4Thuy-Chung Kieu-Le5Evelien Castrop6Thanh-Khiet L. Bui7Emilie Strady8Sarian Kosten9Lauren Biermann10Sanne J.P. van den Berg11Martine van der Ploeg12Hydrology and Quantitative Water Management Group, Wageningen University, Wageningen, NetherlandsHydrology and Quantitative Water Management Group, Wageningen University, Wageningen, NetherlandsÉcole Polytechnique de Montréal, Montréal, QC, CanadaFaculty of Geology and Petroleum Engineering, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, VietnamFaculty of Geology and Petroleum Engineering, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, VietnamVietnam National University Ho Chi Minh City, Ho Chi Minh City, VietnamHydrology and Quantitative Water Management Group, Wageningen University, Wageningen, NetherlandsInstitute for Circular Economy, Vietnam National University-Ho Chi Minh City, Ho Chi Minh City, VietnamMediterranean Institute of Oceanography (MIO), Aix-Marseille University, Université de Toulon, CNRS/IRD, Marseille, FranceDepartment of Aquatic Ecology and Environmental Biology, Institute for Water and Wetland Research, Radboud University, Nijmegen, NetherlandsPlymouth Marine Laboratory, Plymouth, United KingdomWageningen Environmental Research, Wageningen, NetherlandsHydrology and Quantitative Water Management Group, Wageningen University, Wageningen, NetherlandsRiver plastic pollution is an environmental challenge of growing concern. However, there are still many unknowns related to the principal drivers of river plastic transport. Floating aquatic vegetation, such as water hyacinths, have been found to aggregate and carry large amounts of plastic debris in tropical river systems. Monitoring the entrapment of plastics in hyacinths is therefore crucial to answer the relevant scientific and societal questions. Long-term monitoring efforts are yet to be designed and implemented at large scale and various field measuring techniques can be applied. Here, we present a field guide on available methods that can be upscaled in space and time, to characterize macroplastic entrapment within floating vegetation. Five measurement techniques commonly used in plastic and vegetation monitoring were applied to the Saigon river, Vietnam. These included physical sampling, Unmanned Aerial Vehicle imagery, bridge imagery, visual counting, and satellite imagery. We compare these techniques based on their suitability to derive metrics of interest, their relevancy at different spatiotemporal scales and their benefits and drawbacks. This field guide can be used by practitioners and researchers to design future monitoring campaigns and to assess the suitability of each method to investigate specific aspects of macroplastic and floating vegetation interactions.https://www.frontiersin.org/articles/10.3389/fenvs.2021.716516/fullPlasticriverine debrishydrologymacroplasticsfloating vegetationVietnam
spellingShingle Louise Schreyers
Tim van Emmerik
Thanh Luan Nguyen
Ngoc-Anh Phung
Thuy-Chung Kieu-Le
Thuy-Chung Kieu-Le
Evelien Castrop
Thanh-Khiet L. Bui
Emilie Strady
Sarian Kosten
Lauren Biermann
Sanne J.P. van den Berg
Martine van der Ploeg
A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water Hyacinths
Frontiers in Environmental Science
Plastic
riverine debris
hydrology
macroplastics
floating vegetation
Vietnam
title A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water Hyacinths
title_full A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water Hyacinths
title_fullStr A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water Hyacinths
title_full_unstemmed A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water Hyacinths
title_short A Field Guide for Monitoring Riverine Macroplastic Entrapment in Water Hyacinths
title_sort field guide for monitoring riverine macroplastic entrapment in water hyacinths
topic Plastic
riverine debris
hydrology
macroplastics
floating vegetation
Vietnam
url https://www.frontiersin.org/articles/10.3389/fenvs.2021.716516/full
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