Change search
ReferencesLink to record
Permanent link

Direct link
Paleoecological evidence of major declines in total organic carbon concentrations since the nineteenth century in four nemoboreal lakes
Department of Environmental Assessment, Swedish University of Agricultural Sciences, Uppsala.
2011 (English)In: Journal of Paleolimnology, ISSN 0921-2728, E-ISSN 1573-0417, Vol. 45, no 4, 507-518 p.Article in journal (Refereed) Published
Abstract [en]

A decade of widespread increases in surface water concentrations of total organic carbon (TOC) in some regions has raised questions about longer term patterns in this important constituent of water chemistry. This study uses near-infrared spectroscopy (NIRS) to infer lake water TOC far beyond the decade or two of observational data generally available. An expanded calibration dataset of 140 lakes across Sweden covering a TOC gradient from 0.7 to 24.7 mg L(-1) was used to establish a relationship between the NIRS signal from surface sediments (0-0.5 cm) and the TOC concentration of the water mass. Internal cross-validation of the model resulted in an R (2) of 0.72 with a root mean squared error of calibration (RMSECV) of 2.6 mg L(-1). The TOC concentrations reconstructed from surface sediments in four Swedish lakes were typically within the range of concentrations observed in the monitoring data during the period represented by each sediment layer. TOC reconstructions from the full sediment cores of four lakes indicated that TOC concentrations were approximately twice as high a century ago.

Place, publisher, year, edition, pages
2011. Vol. 45, no 4, 507-518 p.
National Category
Oceanography, Hydrology, Water Resources Environmental Sciences
Research subject
Earth Science with specialization in Environmental Analysis
URN: urn:nbn:se:uu:diva-164977DOI: 10.1007/s10933-010-9420-xOAI: diva2:471085
Available from: 2012-01-04 Created: 2011-12-31 Last updated: 2012-01-04Bibliographically approved

Open Access in DiVA

fulltext(697 kB)164 downloads
File information
File name FULLTEXT03.pdfFile size 697 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Bishop, Kevin
In the same journal
Journal of Paleolimnology
Oceanography, Hydrology, Water ResourcesEnvironmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 164 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 220 hits
ReferencesLink to record
Permanent link

Direct link