CGRG Bibliography of Canadian Geomorphology
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Author : Badiou, P.; Malley, D.F.; and Goldsborough, L.G.
Date : 2001.
Title : Star Trelk technology for the analysis of wetland sediments.
Publication : North American Benthological Society Annual Meeting, La Crosse, Wisconsin, 2001.
Issue :
Page(s) :
Abstract
One of the most useful approaches to the long-term monitoring of aquatic ecosystems is the analysis of their associated sediments. Nevertheless, traditional methods of sediment analysis can be very costly and time consuming. Near-infrared reflectance spectroscopy (NIRS) has been adopted by many industries and is used extensively in the fields of agriculture, food, textiles, petrochemicals, and pharmaceuticals as a rapid, non-destructive, and cost-effective technique that can predict accurately large numbers of constituents simultaneously. Sediment samples were collected from six experimental wetland cells located on the south shore of Lake Manitoba. Samples were freeze dried and then scanned using a Foss NIRSystems Model 6500 visible/near-infrared scanning spectrophotometer from 1100 to 2500 nm. NIR spectra were then used to develop statistical models (calibrations) between spectral and constituent data (C, N, P, % H2O, and % organic matter) determined by conventional analytical methods. Additionally, spectral data from the wetland sediments were combined with spectral data from Lakes Chapala (Mexico), Biwa (Japan), Winnipeg (Canada), and Superior (Canada/United States) to develop global calibrations for % H2O, % organic matter (LOI), and total phosphorous. Statistical models in this study were developed using principal component analysis (PCA)/least squares regression. We also examined the geographical variability of sediment quality in the lakes mentioned above by conducting a PCA analysis on their spectral data.
Bibliography of Canadian Geomorphology