Results 11 to 20 of about 567 (174)

Changes in DOM Quality Determine Prokaryotic Activities and Extracellular Release in the NW Mediterranean Sea: An Experimental Approach. [PDF]

Environ Microbiol Rep
Changes in DOM composition influence prokaryotic species growth in the Mediterranean Sea, shaping their metabolic responses and organic matter processing. In our study, higher DOP consumption and alkaline phosphatase activity led to the accumulation of recalcitrant DOM, highlighting how microbial community shifts drive distinct pathways in carbon ...
Ortega-Retuerta E, Bouchachi N, Campos R, Crispi O, Marie B, Paulin CH, Escoubeyrou K, Colombet J, Sime-Ngando T, Von Jackowski A.   +9 more
europepmc   +2 more sources

Temperature Thresholds Govern Microbial-Mediated Dissolved Organic Carbon Dynamics in Coastal Ecosystems. [PDF]

Adv Sci (Weinh)
Coastal dissolved organic carbon (DOC) represents one of the largest reduced carbon pools on Earth, and they are influenced by temperature. Across 7.6–35.9 °C ranges, the microbial‐mediated DOC dynamics is characterized by three temperature thresholds.
Dong J, Chen X, Chen F, Hu Z, Tu Q, Li G, He C, Shi Q, Zheng Q, Chen F, Shi T, Jiao N, Liu J.   +12 more
europepmc   +2 more sources

Spatiotemporal Characterization of Chromophoric Dissolved Organic Matter (CDOM) and CDOM-DOC Relationships for Highly-Polluted River [PDF]

Water, 2016
Spectral characteristics of CDOM in water column are a key parameter for bio-optical modeling. Knowledge of CDOM optical properties and spatial discrepancy based on the relationship between water quality and spectral parameters in Yinma River watershed with in situ data collected highly-polluted waters are exhibited in this study.
Sijia Li, Jiquan Zhang, Guangyi Mu, Hanyu Ju, Rui Wang, Danjun Li   +5 more
openaire   +2 more sources

Grazing impact on chromophoric dissolved organic matter (CDOM) by the larvacean Oikopleura dioica [PDF]

Marine Ecology Progress Series, 2006
Experiments were conducted to determine if the pelagic larvacean Oikopleura dioica could graze on chromophoric dissolved organic material (CDOM) and if so, could such grazing affect the optical characteristics of the water column. Although O. dioica was found to graze on CDOM, it also contributes to the CDOM pool. O. dioica cleared large, >10 kDa CDOM,
J Urban-Rich, D Fernández, JL Acuña
openaire   +1 more source

Optical characteristics and factors that influence representative Lakes in the Taihu Lake basin, China

Journal of Freshwater Ecology, 2022
From 2018 to 2019, a survey of a typical lakes system in the Taihu Lake basin, China, was carried out. To provide reference values for the restoration and management of submerged vegetation in the lakes, the optical attenuation coefficient (Kd) and ...
Weixiang Ren, Xiaodong Wu, Jianying Chao, Xuguang Ge, Shunmei Zhu, Mengdie Zhou   +5 more
doaj   +1 more source

Evolution of dissolved and particulate chromophoric materials during the VAHINE mesocosm experiment in the New Caledonian coral lagoon (south-west Pacific) [PDF]

Biogeosciences, 2016
In the framework of the VAHINE project, we investigated the spectral characteristics and the variability of dissolved and particulate chromophoric materials throughout a 23-day mesocosm experiment conducted in the south-west Pacific at the mouth of the ...
M. Tedetti, L. Marie, R. Röttgers, M. Rodier, F. Van Wambeke, S. Helias, M. Caffin, V. Cornet-Barthaux, C. Dupouy   +8 more
doaj   +1 more source

Chromophoric Dissolved Organic Matter (CDOM): chemical structure and PARAFAC analysis [PDF]

, 2018
The structure(s), distribution and dynamics of CDOM have been investigated over the last several decades largely through optical spectroscopy (including both absorption and fluorescence) due to the fairly inexpensive instrumentation and the easy-to-gather data (over thousands published papers from 1990-2016). Yet, the chemical structure(s) of the light
Rossana Del Vecchio, Neil V Blough, Carmen Cartisano, Marla Bianca, Tara M Schendorf, Danielle Le Roux   +5 more
openaire   +1 more source

The optical characteristics and sources of chromophoric dissolved organic matter (CDOM) in seasonal snow of northwestern China [PDF]

The Cryosphere, 2018
Abstract. Chromophoric dissolved organic matter (CDOM) plays an important role in the global carbon cycle and energy budget but is rarely studied in seasonal snow. A field campaign was conducted across northwestern China from January to February 2012, and surface snow samples were collected at 39 sites in Xinjiang and Qinghai provinces.
Y. Zhou, H. Wen, J. Liu, W. Pu, Q. Chen, Q. Chen, X. Wang   +6 more
openaire   +3 more sources

Formation of Chromophoric Dissolved Organic Matter by Bacterial Degradation of Phytoplankton-Derived Aggregates

Frontiers in Marine Science, 2018
Organic matter produced and released by phytoplankton during growth is processed by heterotrophic bacterial communities that transform dissolved organic matter into biomass and recycle inorganic nutrients, fueling microbial food web interactions ...
Joanna D. Kinsey, Gabrielle Corradino, Kai Ziervogel, Astrid Schnetzer, Christopher L. Osburn   +4 more
doaj   +1 more source

CDOM spectral slope (S275–295) as tracers of water masses, CDOM heterogeneity, and Δ14C‐DOC in an oligotrophic marginal sea

Limnology and Oceanography Letters, 2023
The absorption spectral slope, S275–295, is an optical metric frequently employed for characterizing chromophoric dissolved organic matter (CDOM). We collected CDOM absorption (aCDOM) and fluorescence spectra from the oligotrophic offshore South China ...
Guisheng Song, Fangming Yang, Philippe Massicotte, Hao Wei, Huixiang Xie   +4 more
doaj   +1 more source