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Comparison of Two PARAFAC Models of Dissolved Organic Matter Fluorescence for a Mid-Atlantic Forested Watershed in the USA
Joint Authors
Scott, Durelle
Inamdar, Shreeram
Singh, Shatrughan
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-07-11
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
The composition of dissolved organic matter (DOM) in a mid-Atlantic forested watershed was evaluated using two fluorescence models—one based on previously validated model (Cory and McKnight, 2005) and the other developed specifically for our study site.
DOM samples for the models were collected from multiple watershed sources over a two-year period.
The previously validated parallel factor analysis (PARAFAC) model had 13 DOM components whereas our site-specific model yielded six distinct components including two terrestrial humic-like, two microbial-derived humic-like, and two protein-like components.
The humic-like components were highest in surficial watershed sources and decreased from soil water to groundwater whereas the protein-like components were highest for groundwater sources.
Discriminant analyses indicated that our site-specific model was more sensitive to subtle differences in DOM and the sum of the humic- and protein-like constituents yielded more pronounced differences among watershed sources as opposed to the prevalidated model.
Dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) concentrations and selected DOM metrics were also more strongly correlated with the site-specific model components.
These results suggest that while the pre-validated model may capture broader trends in DOM composition and allow comparisons with other study sites, a site-specific model will be more sensitive for characterizing within-site differences in DOM.
American Psychological Association (APA)
Singh, Shatrughan& Inamdar, Shreeram& Scott, Durelle. 2013. Comparison of Two PARAFAC Models of Dissolved Organic Matter Fluorescence for a Mid-Atlantic Forested Watershed in the USA. Journal of Ecosystems،Vol. 2013, no. 2013, pp.1-16.
https://search.emarefa.net/detail/BIM-479258
Modern Language Association (MLA)
Singh, Shatrughan…[et al.]. Comparison of Two PARAFAC Models of Dissolved Organic Matter Fluorescence for a Mid-Atlantic Forested Watershed in the USA. Journal of Ecosystems No. 2013 (2013), pp.1-16.
https://search.emarefa.net/detail/BIM-479258
American Medical Association (AMA)
Singh, Shatrughan& Inamdar, Shreeram& Scott, Durelle. Comparison of Two PARAFAC Models of Dissolved Organic Matter Fluorescence for a Mid-Atlantic Forested Watershed in the USA. Journal of Ecosystems. 2013. Vol. 2013, no. 2013, pp.1-16.
https://search.emarefa.net/detail/BIM-479258
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479258