CGRG Bibliography of Canadian Geomorphology
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Author : Clair, T.A.
Date : 2006.
Title : Hydrology controls DOC concentrations in Nova Scotian lakes and rivers.
Publication : Global Challenges Facing Oceanography and Limnology. ALSO 2006, Meeting of the American Society of Limnology and Oceanography. June 4-9, 2005. Victoria Conference Centre, Victoria, British Columbia.
Issue :
Page(s) :
Abstract
Allochthonous dissolved organic carbon (DOC) is the product of processes occurring in catchment soils. It's occurance in streams and eventually lakes is controlled by catchment soil types, the connectivity of soils with drainage waters, and transport by runoff and groundwater processes. We used DOC and other chemical data from long-term acid rain monitoring networks in Nova Scotia, Canada and assessed variations and trends in annual DOC concentrations in relation to DOC analytical methods, acid deposition, sunlight, growing season temperature as well as regional precipitation. The only significant relationship we found in our data was a positive correlation between regional precipitation and DOC. These data emphasize the fact that climate is the most important determinant of DOC transport to rivers and lakes in our study area. We did not assess processes which occur in lakes, such as photo and bio-oxidation or chemical precipitation reactions. These results are a reminder that processes controlling DOC in catchments are different from those occurring in lakes. An understanding of the issue, if there is an issue, will require a multi-compartmental approach.
Bibliography of Canadian Geomorphology