Show simple item record

dc.contributor.authorBravo-Linares, C
dc.contributor.authorOvando-Fuentealba, L
dc.contributor.authorMuñoz-Arcos, E
dc.contributor.authorKitch, JL
dc.contributor.authorMillward, GE
dc.contributor.authorLópez-Gajardo, R
dc.contributor.authorCañoles-Zambrano, M
dc.contributor.authorDel Valle, A
dc.contributor.authorKelly, C
dc.contributor.authorBlake, WH
dc.date.accessioned2024-01-11T18:23:05Z
dc.date.available2024-01-11T18:23:05Z
dc.date.issued2024-01-09
dc.identifier.issn0048-9697
dc.identifier.issn1879-1026
dc.identifier.other169952
dc.identifier.urihttps://pearl.plymouth.ac.uk/handle/10026.1/21903
dc.description.abstract

Siltation and the loss of hydropower reservoir capacity is a global challenge with a predicted 26 % loss of storage at the global scale by 2050. Like in many other Latin American contexts, soil erosion constitutes one of the most significant water pollution problems in Chile with serious siltation consequences downstream. Identifying the sources and drivers affecting hydropower siltation and water pollution is a critical need to inform adaptation and mitigation strategies especially in the context of changing climate regimes e.g. rainfall patterns. We investigated, at basin scale, the main sources of sediments delivered to one of the largest hydropower reservoirs in South America using a spatio-temporal geochemical fingerprinting approach. Mining activities contributed equivalent to 9 % of total recent sediment deposited in the hydropower lake with notable concentrations of sediment-associated pollutants e.g. Cu and Mo in bed sediment between the mine tributary and the reservoir sediment column. Agricultural sources represented ca. 60 % of sediment input wherein livestock production and agriculture promoted the input of phosphorus to the lake. Evaluation of the lake sediment column against the tributary network showed that the tributary associated with both dominant anthropogenic activities (mining and agriculture) contributed substantially more sediment, but sources varied through time: mining activities have reduced in proportional contribution since dam construction and proportional inputs from agriculture have increased in recent years, mainly promoted by recent conversion of steep lands from native vegetation to agriculture. Siltation of major hydropower basins presents a global challenge exemplified by the Rapel basin. The specific challenges faced here highlight the urgent need for co-design of evidence-led, context-specific solutions that address the interplay of drivers both within and without the basin and its communities, enhancing the social acceptability of sediment management strategies to support the sustainability of clean, hydropower energy production.

dc.format.extent169952-169952
dc.format.mediumPrint-Electronic
dc.languageen
dc.publisherElsevier BV
dc.subjectWater-energy-food security
dc.subjectBasin scale
dc.subjectSediments
dc.subjectFingerprinting
dc.subjectContaminants
dc.titleBasin scale sources of siltation in a contaminated hydropower reservoir
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/38199374
plymouth.volume914
plymouth.publisher-urlhttp://dx.doi.org/10.1016/j.scitotenv.2024.169952
plymouth.publication-statusPublished
plymouth.journalScience of The Total Environment
dc.identifier.doi10.1016/j.scitotenv.2024.169952
plymouth.organisational-group|Plymouth
plymouth.organisational-group|Plymouth|Research Groups
plymouth.organisational-group|Plymouth|Faculty of Science and Engineering
plymouth.organisational-group|Plymouth|Faculty of Science and Engineering|School of Geography, Earth and Environmental Sciences
plymouth.organisational-group|Plymouth|Research Groups|Marine Institute
plymouth.organisational-group|Plymouth|REF 2021 Researchers by UoA
plymouth.organisational-group|Plymouth|Users by role
plymouth.organisational-group|Plymouth|Users by role|Academics
plymouth.organisational-group|Plymouth|REF 2021 Researchers by UoA|UoA14 Geography and Environmental Studies
plymouth.organisational-group|Plymouth|Admin Group - REF
plymouth.organisational-group|Plymouth|Admin Group - REF|REF Admin Group - FoSE
plymouth.organisational-group|Plymouth|Users by role|Researchers in ResearchFish submission
plymouth.organisational-group|Plymouth|REF 2028 Researchers by UoA
plymouth.organisational-group|Plymouth|REF 2028 Researchers by UoA|UoA14 Geography and Environmental Studies
dc.publisher.placeNetherlands
dcterms.dateAccepted2024-01-03
dc.date.updated2024-01-11T18:23:05Z
dc.rights.embargodate2024-1-13
dc.identifier.eissn1879-1026
rioxxterms.versionofrecord10.1016/j.scitotenv.2024.169952


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record


All items in PEARL are protected by copyright law.
Author manuscripts deposited to comply with open access mandates are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author.
Theme by 
Atmire NV