Results 1 to 10 of about 52,957 (305)

Particulate Organic Carbon Deconstructed: Molecular and Chemical Composition of Particulate Organic Carbon in the Ocean [PDF]

Frontiers in Marine Science, 2020
The dynamics of the particulate organic carbon (POC) pool in the ocean are central to the marine carbon cycle. POC is the link between surface primary production, the deep ocean, and sediments.
Jenan J. Kharbush, Hilary G. Close, Benjamin A. S. Van Mooy, Carol Arnosti, Rienk H. Smittenberg, Frédéric A. C. Le Moigne, Gesine Mollenhauer, Gesine Mollenhauer, Barbara Scholz-Böttcher, Igor Obreht, Boris P. Koch, Kevin W. Becker, Morten H. Iversen, Morten H. Iversen, Wiebke Mohr   +14 more
doaj   +10 more sources

Review on Dissolved Organic Carbon and Particulate Organic Carbon in Marine Environment

Ilmu Kelautan, 2018
Quantification the Dissolved and Particulate organic carbon in marine waters is an essential step towards ecosystem modeling and understanding carbon sequestration processes.
Radha Karuna Kumari, P. M. Mohan
doaj   +2 more sources

Global turnover of soil mineral-associated and particulate organic carbon. [PDF]

Nat Commun
AbstractSoil organic carbon (SOC) persistence is predominantly governed by mineral protection, consequently, soil mineral-associated (MAOC) and particulate organic carbon (POC) turnovers have different impacts on the vulnerability of SOC to climate change.
Zhou Z, Ren C, Wang C, Delgado-Baquerizo M, Luo Y, Luo Z, Du Z, Zhu B, Yang Y, Jiao S, Zhao F, Cai A, Yang G, Wei G.   +13 more
europepmc   +5 more sources

Shallow particulate organic carbon regeneration in the South Pacific Ocean. [PDF]

Proc Natl Acad Sci U S A, 2019
Significance Plankton in the sunlit surface ocean photosynthesize, fixing dissolved CO 2 into particulate organic carbon (POC). This POC sinks and is respired, releasing CO 2 into subsurface waters that are sequestered from the atmosphere.
Pavia FJ, Anderson RF, Lam PJ, Cael BB, Vivancos SM, Fleisher MQ, Lu Y, Zhang P, Cheng H, Cheng H, Edwards RL.   +10 more
europepmc   +5 more sources

Modelling carbon overconsumption and the formation of extracellular particulate organic carbon [PDF]

Biogeosciences, 2007
During phytoplankton growth a fraction of dissolved inorganic carbon (DIC) assimilated by phytoplankton is exuded in the form of dissolved organic carbon (DOC), which can be transformed into extracellular particulate organic carbon (POC).
C. Völker, D. Wolf-Gladrow, S. Thoms, A. Engel, J. Schröter, M. Schartau   +5 more
doaj   +11 more sources

Remineralization of particulate organic carbon in an ocean oxygen minimum zone. [PDF]

Nat Commun, 2017
AbstractBiological oceanic processes, principally the surface production, sinking and interior remineralization of organic particles, keep atmospheric CO2 lower than if the ocean was abiotic. The remineralization length scale (RLS, the vertical distance over which organic particle flux declines by 63%, affected by particle respiration, fragmentation ...
Cavan EL, Trimmer M, Shelley F, Sanders R.   +3 more
europepmc   +7 more sources

Dominant Edaphic Controls on Particulate Organic Carbon in Global Soils [PDF]

Global Change Biology
ABSTRACTThe current soil carbon paradigm puts particulate organic carbon (POC) as one of the major components of soil organic carbon worldwide, highlighting its pivotal role in carbon mitigation. In this study, we compiled a global dataset of 3418 data points of POC concentration in soils and applied empirical modeling and machine learning algorithms ...
Xinhao Zhu, Jorge L M Rodrigues, Lihua Zhang   +2 more
exaly   +3 more sources

Long-term application of straw and biochar improves soil carbon fractions, enzyme activity, and tomato yield under continuous greenhouse cultivation [PDF]

Frontiers in Plant Science
In recent years, there has been increasing emphasis on the sustainable organic material reutilization, including straw and biochar. This study investigates the effects of prolonged applications of straw (R), biochar (B), and their combination (RB) on ...
Xiaoyang Yu, Xiaoyang Yu, Zhen Wang, Zhen Wang, Meiqi Guo, Meiqi Guo, Tianqi Wang, Tianqi Wang, Jiarui Li, Jiarui Li, Hongdan Fu, Hongdan Fu   +11 more
doaj   +2 more sources

Estimating soil particulate organic carbon through total soil organic carbon

Ciencia del Suelo
Particulate soil organic carbon (POC) is sensitive to management changes, and a good soil health indicator. However, its determination is tedious and time consuming. Given POC changes represent most of total organic carbon (TOC) variation due to soil use,
Natalia Veronica Diovisalvi, Guillermo Alberto Studdert, Nahuel Ignacio Reussi Calvo, Germán Franco Dominguez, Angel Berardo   +4 more
doaj   +1 more source

Bacteria and Archaea Regulate Particulate Organic Matter Export in Suspended and Sinking Marine Particle Fractions

mSphere, 2023
The biological carbon pump (BCP) in the Southern Ocean is driven by phytoplankton productivity and is a significant organic matter sink. However, the role of particle-attached (PA) and free-living (FL) prokaryotes (bacteria and archaea) and their ...
Choaro D. Dithugoe, Oliver K. I. Bezuidt, Emma L. Cavan, William P. Froneman, Sandy J. Thomalla, Thulani P. Makhalanyane   +5 more
doaj   +1 more source