Lake sediments record sensitivity of two hydrologically closed upland lakes in Mexico to human impact

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dc.contributor.author Davies, Sarah J.
dc.contributor.author Metcalfe, S. E.
dc.contributor.author Chacon, A.
dc.contributor.author Bernal-Brooks, F.
dc.contributor.author Farmer, John G
dc.contributor.author MacKenzie, Angus B
dc.contributor.author Newton, Anthony J
dc.date.accessioned 2008-12-16T14:22:17Z
dc.date.available 2008-12-16T14:22:17Z
dc.date.issued 2005-08
dc.identifier.citation Davies , S J , Metcalfe , S E , Chacon , A , Bernal-Brooks , F , Farmer , J G , MacKenzie , A B & Newton , A J 2005 , ' Lake sediments record sensitivity of two hydrologically closed upland lakes in Mexico to human impact ' AMBIO - A Journal of the Human Environment , vol 34 , no. 6 , pp. 470-475 . en
dc.identifier.issn 1654-7209
dc.identifier.other PURE: 95191
dc.identifier.other dspace: 2160/1718
dc.identifier.uri http://hdl.handle.net/2160/1718
dc.description Davies, Sarah, Metcalfe, S.E., Bernal-Brooks, F., Chacon, A., (2004) 'Lake sediments record sensitivity of two hydrologically closed upland lakes in Mexico to human impact', AMBIO: A Journal of the Human Environment34(6) pp.470-475 RAE2008 en
dc.description.abstract We provide evidence of rapid, recent environmental change in two lakes in the highlands of central Mexico. Multiple sediment cores were obtained from Lago de Zirahuén (Michoacán) and Laguna de Juanacatlán (Jalisco). Analysis of diatom assemblages, magnetic susceptibility, and metal concentrations was carried out, with the chronology provided by 210Pb dating, 14C dating, and tephrochronology. There is evidence of catchment disturbance during the colonial period in both basins, but the most striking feature at both sites is the rapid change in diatom assemblages during the last 20 y, indicating the onset of eutrophication. Limnological data from Lago de Zirahuén support this interpretation, although none are available from Laguna de Juanacatlán. Paleolimnology is a powerful tool in tracking recent change, particularly in the absence of regular limnological monitoring programs. These lakes appear to be highly sensitive to changes in catchment exploitation, which must be considered in future drainage basin management. en
dc.format.extent 6 en
dc.language.iso eng
dc.relation.ispartof AMBIO - A Journal of the Human Environment en
dc.title Lake sediments record sensitivity of two hydrologically closed upland lakes in Mexico to human impact en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1579/0044-7447-34.6.470
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Quaternary Environmental Change Group en
dc.description.status Peer reviewed en


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