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Mcneice, William, 2016. Monitoring dissolved organic carbon in Swedish forest streams after wildfire. Second cycle, A2E. Uppsala: SLU, Dept. of Aquatic Sciences and Assessment

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Abstract

In situ water quality monitoring devices (sondes) allow monitoring of dissolved organic matter (DOC) continuously at a high resolution via measurements of fluorescent dissolved organic matter (fDOM). Two sondes were used to test the hypothesis that DOC in local streams would decrease in concentration immediately after forest fire. It was expected that the sondes' measurements would be influenced by turbidity and require post hoc correction. A simple model to predict DOC from fDOM was designed and suggested that DOC inputs were reduced after the fire, but flushing of terrestrial carbon brought values back to normal in following spring. Analysis of fluorescence and absorbance suggested a change in the quality as well as quantity of carbon inputs. Sonde measurements were found to be severely affected by high turbidity events, and varied depending on the stream, but we could partially compensate for this with corrections based on laboratory analysis of samples taken from monitored streams. Future monitoring that relies on fDOM data should be supported by a sampling program to capture natural variation of DOC and turbidity in the monitored stream.

Main title:Monitoring dissolved organic carbon in Swedish forest streams after wildfire
Authors:Mcneice, William
Supervisor:Köhler, Stephan
Examiner:Fölster, Jens
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2016
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:Other
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Keywords:forest fire, sensor, organic matter, monitoring
URN:NBN:urn:nbn:se:slu:epsilon-s-5089
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-5089
Subjects:Forestry - General aspects
Aquatic ecology
Technology
Language:English
Additional Information:This project was made possible through financial support by the Swedish Agency for Marine and Water Management
Deposited On:08 Feb 2016 09:26
Metadata Last Modified:08 Feb 2016 09:26

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