scholarly journals Tracing the long-term microbial production of recalcitrant fluorescent dissolved organic matter in seawater

2014 ◽  
Vol 41 (7) ◽  
pp. 2481-2488 ◽  
Author(s):  
Linda Jørgensen ◽  
Colin A. Stedmon ◽  
Mats A. Granskog ◽  
Mathias Middelboe
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Microbial Production ◽  
Fluorescent Dissolved Organic Matter

Microbial production of recalcitrant dissolved organic matter: long-term carbon storage in the global ocean

2010 ◽  
Vol 8 (8) ◽  
pp. 593-599 ◽  
Author(s):  
Nianzhi Jiao ◽  
Gerhard J. Herndl ◽  
Dennis A. Hansell ◽  
Ronald Benner ◽  
Gerhard Kattner ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Carbon Storage ◽  
Microbial Production ◽  
Global Ocean

Production and degradation of fluorescent dissolved organic matter derived from bacteria

2017 ◽  
Vol 74 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Ken Arai ◽  
Shigeki Wada ◽  
Koichi Shimotori ◽  
Yuko Omori ◽  
Takeo Hama
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Fluorescent Dissolved Organic Matter

scholarly journals Assessing the Contribution of Seasonality, Tides, and Microbial Processing to Dissolved Organic Matter Composition Variability in a Southeastern U.S. Estuary

2021 ◽  
Vol 8 ◽  
Author(s):  
Rachel P. Martineac ◽  
Alexey V. Vorobev ◽  
Mary Ann Moran ◽  
Patricia M. Medeiros
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Critical Role ◽  
Bacterial Cells ◽  
Secondary Importance ◽  
Relative Contribution ◽  
Doc Concentration ◽  
Compositional Changes ◽  
Dom Composition

Uncovering which biogeochemical processes have a critical role controlling dissolved organic matter (DOM) compositional changes in complex estuarine environments remains a challenge. In this context, the aim of this study is to characterize the dominant patterns of variability modifying the DOM composition in an estuary off the Southeastern U.S. We collected water samples during three seasons (July and October 2014 and April 2015) at both high and low tides and conducted short- (1 day) and long-term (60 days) dark incubations. Samples were analyzed for bulk DOC concentration, and optical (CDOM) and molecular (FT-ICR MS) compositions and bacterial cells were collected for metatranscriptomics. Results show that the dominant pattern of variability in DOM composition occurs at seasonal scales, likely associated with the seasonality of river discharge. After seasonal variations, long-term biodegradation was found to be comparatively more important in the fall, while tidal variability was the second most important factor correlated to DOM composition in spring, when the freshwater content in the estuary was high. Over shorter time scales, however, the influence of microbial processing was small. Microbial data revealed a similar pattern, with variability in gene expression occurring primarily at the seasonal scale and tidal influence being of secondary importance. Our analyses suggest that future changes in the seasonal delivery of freshwater to this system have the potential to significantly impact DOM composition. Changes in residence time may also be important, helping control the relative contribution of tides and long-term biodegradation to DOM compositional changes in the estuary.

Temperature, turbidity, and the inner filter effect correction methodology for analyzing fluorescent dissolved organic matter in urban sewage

2020 ◽  
Vol 27 (28) ◽  
pp. 35712-35723
Author(s):  
Angélique Goffin ◽  
Laura Alejandra Vasquez-Vergara ◽  
Sabrina Guérin-Rechdaoui ◽  
Vincent Rocher ◽  
Gilles Varrault
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Inner Filter Effect ◽  
Urban Sewage ◽  
Fluorescent Dissolved Organic Matter ◽  
Filter Effect

Changes in fluorescent dissolved organic matter and their association with phytoavailable phosphorus in soil amended with TiO2 nanoparticles

Chemosphere ◽  
2019 ◽  
Vol 227 ◽  
pp. 17-25 ◽  
Author(s):  
Zahra Zahra ◽  
Tahir Maqbool ◽  
Muhammad Arshad ◽  
Mohsin Ali Badshah ◽  
Hyung-Kyoon Choi ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Tio2 Nanoparticles ◽  
Fluorescent Dissolved Organic Matter
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