Results 41 to 50 of about 34,958 (163)

Direct measurement of riverine particulate organic carbon age structure [PDF]

Geophysical Research Letters, 2012
Carbon cycling studies focusing on transport and transformation of terrigenous carbon sources toward marine sedimentary sinks necessitate separation of particulate organic carbon (OC) derived from many different sources and integrated by river systems.
Rosenheim, Brad E., Galy, Valier
openaire   +2 more sources

Characteristics of soil organic carbon fractions in four vegetation communities of an inland salt marsh

Carbon Balance and Management
Background The study of soil organic carbon characteristics and its relationship with soil environment and vegetation types is of great significance to the evaluation of soil carbon sink provided by inland salt marshes.
Manping Kang, ChengZhang Zhao, Min Ma, Xiaoya Li   +3 more
doaj   +1 more source

Seasonal dynamics of carbon and nutrients from two contrasting tropical floodplain systems in the Zambezi River basin [PDF]

Biogeosciences, 2015
Floodplains are important biogeochemical reactors during fluvial transport of carbon and nutrient species towards the oceans. In the tropics and subtropics, pronounced rainfall seasonality results in highly dynamic floodplain biogeochemistry. The massive
A. L. Zuijdgeest, R. Zurbrügg, N. Blank, R. Fulcri, D. B. Senn, B. Wehrli   +5 more
doaj   +1 more source

Massive concentrations of old dissolved organic carbon from Yedoma thaw in lakes in Siberia

Communications Earth & Environment
Understanding the impacts of permafrost thawing on the carbon cycle requires a closer look at the proportion of dissolved and particulate organic carbon released upon thaw, and the magnitude of its conversion into greenhouse gases, which remain ...
Sarah Ollivier, Antoine Séjourné, Christine Hatté, Frédéric Bouchard, Aurélie Noret, Lara Hughes-Allen, François Costard, Laure Gandois   +7 more
doaj   +1 more source

Arbuscular mycorrhizal fungi communities and glomalin mediate particulate and mineral-associated organic carbon formation in grassland patches

Communications Earth & Environment
Arbuscular mycorrhizal fungi stimulate particulate and mineral-associated organic carbon formation and stabilization through hyphae residue, glomalin-related soil proteins gluing, and mycelium entangling.
Deng Ao, Baorong Wang, Yubin Wang, Yuanjia Chen, Chao Liang, Shaoshan An   +5 more
doaj   +1 more source

Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm

Environment International, 2021
Organic carbon produced by nitrifiers plays an important role in maintaining the microbial metabolism in the aphotic ocean layer with carbon and energy scarcity. However, the contribution of nitrifiers to organic carbon processing remains unclear.
Lianbao Zhang, Mingming Chen, Xiaowei Chen, Jianning Wang, Yu Zhang, Xilin Xiao, Chen Hu, Jihua Liu, Rui Zhang, Dapeng Xu, Nianzhi Jiao, Yao Zhang   +11 more
doaj   +1 more source

Dissolved carbon flow to particulate organic carbon enhances soil carbon sequestration

SOIL
Abstract. Particulate organic carbon (POC) and mineral-associated organic carbon (MAOC), which are two primary components of the soil carbon (C) reservoir, have different physical and chemical properties as well as biochemical turnover rates. Microbial necromass entombment is a primary mechanism for MAOC formation from fast-decaying plant substrates ...
Si, Qintana, Chen, Kangli, Wei, Bin, Zhang, Yaowen, Sun, Xun, Liang, Junyi   +5 more
openaire   +4 more sources

Prominent bacterial heterotrophy and sources of ¹³C-depleted fatty acids to the interior Canada Basin [PDF]

Biogeosciences, 2013
In recent decades, the Canada Basin of the Arctic Ocean has experienced rapidly decreasing summer sea ice coverage and freshening of surface waters. It is unclear how these changes translate to deeper waters, particularly as our baseline understanding of
S. R. Shah, D. R. Griffith, V. Galy, A. P. McNichol, T. I. Eglinton   +4 more
doaj   +1 more source

Organic Biogeochemistry in West Mata, NE Lau Hydrothermal Vent Fields

Geochemistry, Geophysics, Geosystems, 2021
The impact of submarine hydrothermal systems on organic carbon in the ocean—one of the largest fixed carbon reservoirs on Earth—could be profound. Yet, different vent sites show diverse fluid chemical compositions and the subsequent biological responses.
H.‐T. Lin, D. A. Butterfield, E. T. Baker, J. A. Resing, J. A. Huber, J. P. Cowen   +5 more
doaj   +1 more source

Characterization of bacterioplankton communities and quantification of organic carbon pools off the Galapagos Archipelago under contrasting environmental conditions [PDF]

PeerJ, 2018
Bacteria play a crucial role in the marine carbon cycle, contributing to the production and degradation of organic carbon. Here, we investigated organic carbon pools, aggregate formation, and bacterioplankton communities in three contrasting ...
Nataly Carolina Guevara Campoverde, Christiane Hassenrück, Pier Luigi Buttigieg, Astrid Gärdes   +3 more
doaj   +2 more sources