Results 21 to 30 of about 10,837 (254)

Coupling Between Carbon and Nitrogen Metabolic Processes Mediated by Coastal Microbes in Synechococcus-Derived Organic Matter Addition Incubations

Frontiers in Microbiology, 2020
Phytoplankton are major contributors to labile organic matter in the upper ocean. Diverse heterotrophic bacteria successively metabolize these labile compounds and drive elemental biogeochemical cycling.
Rui Xie, Rui Xie, Yu Wang, Yu Wang, Yu Wang, Qi Chen, Qi Chen, Weidong Guo, Weidong Guo, Nianzhi Jiao, Nianzhi Jiao, Qiang Zheng, Qiang Zheng   +12 more
doaj   +1 more source

Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses

Frontiers in Marine Science, 2022
Dissolved organic matter (DOM) serves as the most active and sensitive organic component in the bay, and its biogeochemical characteristics and reactivity are affected by the properties of terrestrial and marine substances significantly.
Yafeng Zhong, Gang Pan, Gang Pan, Hui Zhao, Hui Zhao, Chao Wang, Chao Wang, Chao Wang   +7 more
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Drivers of fluorescent dissolved organic matter in the global epipelagic ocean [PDF]

Limnology and Oceanography, 2016
AbstractFluorescent dissolved organic matter (FDOM) in open surface waters (< 200 m) of the Atlantic, Pacific, and Indian oceans was analysed by excitation‐emission matrix (EEM) spectroscopy and parallel factor analysis (PARAFAC). A four‐component PARAFAC model was fit to the EEMs, which included two humic‐ (C1 and C2) and two amino acid‐like (C3 ...
Catalá, T. S., Álvarez-Salgado, X. A., Otero, J., Iuculano, F., Companys, B., Horstkotte, B., Romera-Castillo, C., Nieto-Cid, M., Latasa, M., Moran, Xose Anxelu G., Gasol, J. M., Marrasé, C., Stedmon, C. A., Reche, I.   +13 more
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Fluorescent signatures of autochthonous dissolved organic matter production in Siberian shelf seas

Frontiers in Marine Science, 2022
The East Siberian Sea is an area of high biogeochemical activity caused by multiple factors, such as an influence of river runoff, Atlantic, and Pacific waters, formation and melting of sea ice, and internal circulation.
Anastasia N. Drozdova, Ivan N. Krylov, Andrey A. Nedospasov, Elena G. Arashkevich, Timur A. Labutin   +4 more
doaj   +1 more source

Characterizing dissolved organic matter in Taihu Lake with PARAFAC and SOM method

Water Science and Technology, 2022
The three-dimensional fluorescence spectrum has a significantly greater amount of information than the single-stage scanning fluorescence spectrum. At the same time, the parallel factor (PARAFAC) analysis and neural network method can help explore the ...
W. Zhang, T. Li, B. Dong
doaj   +1 more source

Origins and characteristics of dissolved organic matter fueling harmful dinoflagellate blooms revealed by δ13C and d/l-Amino acid compositions

Scientific Reports, 2022
We measured the concentrations of dissolved inorganic and organic nutrients, dissolved organic carbon (DOC), total hydrolyzable amino acids (THAA), fluorescent dissolved organic matter (FDOM), phytoplankton pigments, and δ13C-DOC during the summer of ...
Jihyun Park, Guebuem Kim, Hyeong Kyu Kwon, Heejun Han, Tae Gyu Park, Moonho Son   +5 more
doaj   +1 more source

The partitioning behavior of PAHs between settled dust and its extracted water phase: Coefficients and effects of the fluorescent organic matter

Ecotoxicology and Environmental Safety, 2021
The occurrence and distribution of polycyclic aromatic hydrocarbons (PAHs) in a city of Central China were determined in the settled dust and its extracted water phase from different land use types and bus stops in Nanchang City.
Yanru Sheng, Caixia Yan, Minghua Nie, Min Ju, Mingjun Ding, Xian Huang, Jiaming Chen   +6 more
doaj   +1 more source

Fluorescent dissolved organic matter in lakes: Relationships with heterotrophicmetabolism [PDF]

Limnology and Oceanography, 2004
Characterizing dissolved organic matter (DOM) composition remains a major unresolved problem in aquatic ecology and is one of the key impediments to developing a good understanding of DOM production and consumption by heterotrophic bacteria. Fluorescence spectroscopy has been proposed as a promising method for characterizing DOM, but few links have ...
W. K. Levi Cammack, Jacob Kalff, Yves T. Prairie, Erik M. Smith   +3 more
openaire   +1 more source

Dissolved organic matter in the northwestern Pacific marginal seas: Insight into the distribution of its optical properties

Frontiers in Marine Science, 2023
Dissolved organic carbon (DOC) and the optical properties of dissolved organic matter (chromophoric- and fluorescent dissolved organic matter; CDOM and FDOM) were measured to determine the distributions and drivers of DOM in the northwestern Pacific ...
Heejun Han, Hyung Bo Kim, Jeonghyun Kim, Guebuem Kim, Jeomshik Hwang, SungHyun Nam   +5 more
doaj   +1 more source

Nunataryuk field campaigns: understanding the origin and fate of terrestrial organic matter in the coastal waters of the Mackenzie Delta region [PDF]

Earth System Science Data, 2023
Climate warming and related drivers of soil thermal change in the Arctic are expected to modify the distribution and dynamics of carbon contained in perennially frozen grounds. Thawing of permafrost in the Mackenzie River watershed of northwestern Canada,
M. Lizotte, B. Juhls, B. Juhls, B. Juhls, A. Matsuoka, A. Matsuoka, P. Massicotte, G. Mével, D. O. J. Anikina, S. Antonova, G. Bécu, M. Béguin, S. Bélanger, T. Bossé-Demers, T. Bossé-Demers, L. Bröder, F. Bruyant, G. Chaillou, J. Comte, R.-M. Couture, R.-M. Couture, E. Devred, G. Deslongchamps, T. Dezutter, M. Dillon, D. Doxaran, A. Flamand, F. Fell, J. Ferland, J. Ferland, M.-H. Forget, M. Fritz, T. J. Gordon, C. Guilmette, A. Hilborn, R. Hussherr, R. Hussherr, C. Irish, F. Joux, L. Kipp, A. Laberge-Carignan, A. Laberge-Carignan, H. Lantuit, E. Leymarie, A. Mannino, J. Maury, P. Overduin, L. Oziel, L. Oziel, C. Stedmon, C. Thomas, L. Tisserand, J.-É. Tremblay, J. Vonk, D. Whalen, M. Babin   +55 more
doaj   +1 more source