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dc.contributor.authorAlmeida, RM
dc.contributor.authorHamilton, SK
dc.contributor.authorRosi, EJ
dc.contributor.authorArantes, JD
dc.contributor.authorBarros, N
dc.contributor.authorBoemer, G
dc.contributor.authorGripp, A
dc.contributor.authorHuszar, VLM
dc.contributor.authorJunger, PC
dc.contributor.authorLima, M
dc.contributor.authorPacheco, F
dc.contributor.authorCarvalho, D
dc.contributor.authorReisinger, AJ
dc.contributor.authorSilva, LHS
dc.contributor.authorRoland, F
dc.date.accessioned2019-12-02T07:19:28Z
dc.date.available2019-12-02T07:19:28Z
dc.date.issued2019
dc.identifier.issn2045-2322en_US
dc.identifier.doi10.1038/s41598-019-53060-1en_US
dc.identifier.urihttp://hdl.handle.net/10072/389457
dc.description.abstractRun-of-river dams are often considered to have lower environmental impacts than storage dams due to their smaller reservoirs and low potential for flow alteration. However, this has been questioned for projects recently built on large rivers around the world. Two of the world’s largest run-of-river dams—Santo Antônio and Jirau—were recently constructed on the Madeira River, a major tributary to the Amazon River in Brazil. Here we evaluate the effects of the creation of the Santo Antônio dam on the water chemistry and thermal structure of the Madeira River mainstem and back-flooded valleys of tributaries within the reservoir inundated area. In contrast to the mainstem river, some back-flooded tributaries periodically developed thermal stratification, which is associated with higher water residence times. Additionally, biochemical oxygen demand, partial pressure of CO2, and organic carbon all increased in the tributary valleys inundated by the reservoir, possibly due to increased input of allochthonous organic matter and its subsequent mineralization upon back-flooding—a common feature of newly flooded impoundments. The mainstem did not show detectable dam-related changes in water chemistry and thermal structure. Although the majority of the reservoir area maintained riverine conditions, the lateral valleys formed upon back-flooding—corresponding to ~30% of the Santo Antônio reservoir area—developed lake-like conditions akin to a typical reservoir of a storage dam.en_US
dc.description.peerreviewedYesen_US
dc.languageEnglishen_US
dc.publisherNature Publishing Groupen_US
dc.publisher.placeUnited Kingdom
dc.relation.ispartofpagefrom16846: 1en_US
dc.relation.ispartofpageto16846: 11en_US
dc.relation.ispartofissue1en_US
dc.relation.ispartofjournalScientific Reportsen_US
dc.relation.ispartofvolume9en_US
dc.subject.fieldofresearchPhysical Geography and Environmental Geoscienceen_US
dc.subject.fieldofresearchBiochemistry and Cell Biologyen_US
dc.subject.fieldofresearchOther Physical Sciencesen_US
dc.subject.fieldofresearchcode0406en_US
dc.subject.fieldofresearchcode0601en_US
dc.subject.fieldofresearchcode0299en_US
dc.titleLimnological effects of a large Amazonian run-of-river dam on the main river and drowned tributary valleysen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationAlmeida, RM; Hamilton, SK; Rosi, EJ; Arantes, JD; Barros, N; Boemer, G; Gripp, A; Huszar, VLM; Junger, PC; Lima, M; Pacheco, F; Carvalho, D; Reisinger, AJ; Silva, LHS; Roland, F, Limnological effects of a large Amazonian run-of-river dam on the main river and drowned tributary valleys, Scientific Reports, 2019, 9 (1), pp. 16846: 1-16846: 11en_US
dcterms.dateAccepted2019-10-18
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/en_US
dc.date.updated2019-11-28T23:18:09Z
dc.description.versionPublisheden_US
gro.rights.copyright© The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en_US
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gro.griffith.authorHamilton, Stephen K.


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