Abstract
The applicability of fluorescence spectrophotometry and absorption spectrophotometry of sediment organic matter dissolved in pore water (pDOM) for detecting changes in homogeneous limnic deposits was examined. Testing was performed on sediment cores collected from a shallow hypertrophic lake, Lake Harku, Estonia, in which prolific algal blooms have occurred for the last 60 years. Although the age-resolved profiles of fluorescence and absorbance characteristics of pDOM exhibit minor temporal changes over the last 100 years, the scatter plots of different pairs of the pDOM optical characteristics reveal several decisive periods that temporally accord well with the stratigraphic changes in subfossil diatoms and green algae, as well as geochemical proxies.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.