Late Holocene history of the floodplain lakes of the Cauca River, Colombia

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dc.citation.journalTitleJournal Of Paleolimnology
dc.contributor.authorVelez, Maria Isabelspa
dc.contributor.authorMartinez, Jose Ignaciospa
dc.contributor.authorSuter, Fiorespa
dc.contributor.departmentUniversidad EAFIT. Departamento de Geologíaspa
dc.contributor.researchgroupCiencias del Marspa
dc.date.accessioned2021-03-23T20:20:25Z
dc.date.available2021-03-23T20:20:25Z
dc.date.issued2013-04-01
dc.description.abstractWe conducted a paleolimnological investigation of late Holocene deposits on a distal, constrained floodplain of the Cauca River, northern Colombia, i. e. the La Caimana sedimentary succession. The record starts sometime between 4,500 and 4,000 cal yr BP, when the first high-energy fluvial events inundated an ancient soil surface. From that time until about 3,260 cal yr BP, a stable and probably seasonal flooding regime was established on the floodplain. From ~3,260 to ~2,800 cal yr BP, ephemeral and shallow swamps developed on the floodplain. Their formation and duration depended on their connection with the Cauca River. From ~2,800 to ~2,400 cal yr BP, fluvial influence became more dominant, establishing a semi-permanent connection between the river and the floodplain. From ~2,400 to 1,400 cal yr BP, episodic formation of ephemeral swamps occurred. During this stage, floodplain lakes displayed high salinity and nutrient concentrations, and possibly alkaline conditions as a consequence of reduced water volume when the connection with the river was reduced or lost completely. A change in the hydrological regime occurred from ~1,400 to ~850 cal yr BP, when high-energy fluvial events were punctuated by periods of reduced flooding that enabled soil formation. Generally, connection with the Cauca River resulted in lake waters with low salinity and nutrient concentration, whereas loss of connection with the river led to lakes with greater salinity and nutrient content. Paleocurrent analyses indicate that flows came predominantly from the Cauca River, suggesting the lakes were formed by the impoundment of La Caimana Creek. The sedimentary succession of La Caimana offers a unique, high-resolution record of the evolution and dynamics of an ancient floodplain of the Cauca River and its aquatic ecosystems. © 2012 Springer Science+Business Media Dordrecht.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1563
dc.identifier.doi10.1007/s10933-012-9663-9
dc.identifier.issn09212728
dc.identifier.issn15730417
dc.identifier.otherWOS;000316888900004
dc.identifier.otherSCOPUS;2-s2.0-84875594738
dc.identifier.urihttp://hdl.handle.net/10784/26888
dc.language.isoengeng
dc.publisherSPRINGER
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84875594738&doi=10.1007%2fs10933-012-9663-9&partnerID=40&md5=1df61f5b92944c19f02497b01ddd6ad8
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0921-2728
dc.sourceJournal Of Paleolimnology
dc.subject.keywordbraided rivereng
dc.subject.keywordconnectivityeng
dc.subject.keywordephemeral lakeeng
dc.subject.keywordfloodplaineng
dc.subject.keywordHoloceneeng
dc.subject.keywordhydrological regimeeng
dc.subject.keywordpaleolimnologyeng
dc.subject.keywordsoil surfaceeng
dc.subject.keywordCauca Rivereng
dc.subject.keywordColombiaeng
dc.titleLate Holocene history of the floodplain lakes of the Cauca River, Colombiaeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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