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|Title:||The optical qualities of shallow wetland lined bays in Lake Victoria||Authors:||L., Bracchini
Loiselle, Steven Arthur
|Keywords:||CDOM release; Inshore waters; Lake Victoria; Optical properties; PAR; Wetland carbon cycle||Issue Date:||2007||Project:||None||Journal:||WETLANDS ECOLOGY AND MANAGEMENT||Abstract:||
In tropical lakes, the characteristics and dimension of the coastal wetlands can have a strong influence on the quality of the inshore waters. The interaction between littoral wetlands and the open water environment is complex and requires an understanding of the material and energy exchanges between these compartments. In the present analysis, we examine the impact of wetlands on the optical properties (underwater light environment) of two adjacent bays on the Ugandan side of Lake Victoria. We use both irradiance profiles within the water column as well as measurements of the dissolved and particulate fractions of the water column. By introducing a new term to identify that part of the solar spectrum most affected by wetland released dissolved organic matter, it is possible to determine the area of each bay that is influenced by the wetland. Depending on the period of analysis, wetland released chromophoric dissolved organic matter can play a dominating role in the attenuation of UV and visible radiation in the underwater environment. © 2007 Springer Science+Business Media B.V.
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