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2 results for “PARAFAC”
Monthly fluorescence parallel factor analysis (PARAFAC) components for Shark River Slough, Taylor Slough, and Florida Bay, Everglades National Park (FCE LTER), Florida, USA, April 2011 - ongoing
Dissolved organic matter plays an important role in biogeochemical processes in aquatic environments such as elemental cycling, microbial loop energetics, and the transport of materials across landscapes. Since most of N (> 90%) and P (around 90%) is in the organic form in the oligotrophic subtropical Florida Coastal Everglades (FCE), study of the source and dynamics of dissolved organic matter (DOM) in the ecosystem is crucial for the better understanding of the biogeochemical cycling of nutrients. FCE are composed of estuaries with distinct regions with different biogeochemical processes. Freshwater marsh primarily receives terrestrial input and local autochthonous vegetation production. Mangrove ecotone, nevertheless, is affected by the tidal contributions from Florida Bay and local mangrove production. Florida Bay (FB) is a wedge-shaped shallow oligotrophic estuary which lays south of the Everglades, the bottom of which is covered with a dense biomass of seagrass. The sources of both freshwater and nutrients in FCE are difficult to quantify, owing to the non-point source nature of runoff from the Everglades and the dendritic cross channels in the mangroves. Furthermore, the combination of multiple DOM sources (freshwater marsh vegetation, mangroves, phytoplankton, seagrass, etc.), and the potential seasonal variability of their relative contribution, along with the history of (photo)chemical and microbial diagenetic processing, and complex advective circulation, makes the study of DOM dynamics in FCE particularly difficult using standard schemes of estuarine ecology. Quantitative information of DOM is very useful to investigate the biogeochemical cycling of DOM to a certain degree, however, qualitative information is necessary to better understand the source and dynamics of DOM. Since fluorescence spectroscopic techniques are very sensitive, quick and simple, they have been applied to investigate the fate of DOM in estuaries. Here, we have quantified a series of
Seasonal concentrations and fluxes of dissolved, soluble, and colloidal Fe and dissolved organic matter amount and composition (DOC and PARAFAC)
<p>These datasets accompany the following manuscript:</p> <p>Logozzo, L.A.*, Hosen, J.D., McArthur, J., and Raymond, P.A. Distinct drivers of two size fractions of operationally dissolved Fe in a temperate river. Limnology and Oceanography.</p> <p>*Corresponding Author: Laura A. Logozzo, laura.logozzo@uleth.ca</p> <p>Datasets:</p> <p>1- Fe-DOM-EMMA-merged.xlsx: this dataset includes operationally dissolved (<0.22 µm), colloidal (0.02-0.22 µm), and soluble (<0.02 µm) DOC concentrations, total Fe concentrations, PARAFAC component scores <0.22 µm, and end-member mixing model scores <0.22 µm. Samples were collected approximately bi-weekly from the Connecticut River at Thompsonville from April 2018 to March 2020.</p> <p>2- Loadest-merged.xlsx: this dataset includes LOADEST-modeled daily-average and monthly-average fluxes of operationally dissolved (<0.22 µm), colloidal (0.02-0.22 µm), and soluble (<0.02 µm) Fe, DOC <0.22 µm, and allochthonous-like DOC <0.22 µm.</p> <p>All methodology is described in the accompanied manuscript.</p>
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