Results 1 to 10 of about 206,852 (306)

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

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   +2 more sources

Particulate Mercury and Particulate Organic Matter in the Itenez Basin (Bolivia) [PDF]

Applied Sciences, 2020
In rivers and other freshwater bodies, the presence of mercury can be due to direct contamination by anthropic activities such as gold mining. However, it can also be attributed to atmospheric deposition and erosion, runoff, or lixiviation from ...
Fabiola Guzmán-Uria, Isabel Morales-Belpaire, Dario Achá, Marc Pouilly   +3 more
doaj   +3 more sources

Sink or link? The bacterial role in benthic carbon cycling in the Arabian Sea's oxygen minimum zone [PDF]

Biogeosciences, 2013
The bacterial loop, the consumption of dissolved organic matter (DOM) by bacteria and subsequent transfer of bacterial carbon to higher trophic levels, plays a prominent role in pelagic food webs.
L. Pozzato, D. Van Oevelen, L. Moodley, K. Soetaert, J. J. Middelburg   +4 more
doaj   +16 more sources

Origin, trophic transfer and recycling of particulate organic matter in two upwelling bays of Humboldt Current System: Insights from compound-specific isotopic compositions of amino acids. [PDF]

PLoS ONE
The Chilean upwelling bays are highly productive ecosystems shaped by their interactions with the open ocean. Although significant knowledge exists regarding their hydrodynamic and ecological processes, the spatial dynamics of trophic transfer and ...
Benjamín Srain, Edgart Flores, Jorge Valdés, Andrés Camaño   +3 more
doaj   +2 more sources

Biocatalytic quantification of α‐glucan in marine particulate organic matter [PDF]

MicrobiologyOpen, 2022
Marine algae drive the marine carbon cycle, converting carbon dioxide into organic material. A major component of this produced biomass is a variety of glycans. Marine α‐glucans include a range of storage glycans from red and green algae, bacteria, fungi,
Nicola Steinke, Silvia Vidal‐Melgosa, Mikkel Schultz‐Johansen, Jan‐Hendrik Hehemann   +3 more
doaj   +2 more sources

Lability of secondary organic particulate matter [PDF]

Proceedings of the National Academy of Sciences, 2016
Significance Mass lability of atmospheric organic particulate matter, meaning its tendency to evaporate, is an important property in the mechanisms governing the climate and health effects. This property can be governed by both the volatility and the molecular diffusivity of the constituent organic species.
Pengfei Liu, Yong Jie Li, Yan Wang, Mary K. Gilles, Rahul A. Zaveri, Allan K. Bertram, Scot T. Martin   +6 more
openaire   +4 more sources

Optimization of the Efficient Extraction of Organic Components in Atmospheric Particulate Matter by Accelerated Solvent Extraction Technique and Its Application

Atmosphere, 2022
Organic components in atmospheric fine particulate matter have attracted much attention and several scientific studies have been performed, although most of the sample extraction methods are time consuming and laborious.
Hao Zhang, Yanqin Ren, Jie Wei, Yuanyuan Ji, Xurong Bai, Yanqiu Shao, Hong Li, Rui Gao, Zhenhai Wu, Zhijian Peng, Feng Xue   +10 more
doaj   +1 more source

Relative humidity-dependent viscosity of secondary organic material from toluene photo-oxidation and possible implications for organic particulate matter over megacities [PDF]

Atmospheric Chemistry and Physics, 2016
To improve predictions of air quality, visibility, and climate change, knowledge of the viscosities and diffusion rates within organic particulate matter consisting of secondary organic material (SOM) is required.
M. Song, M. Song, P. F. Liu, S. J. Hanna, R. A. Zaveri, K. Potter, Y. You, S. T. Martin, S. T. Martin, A. K. Bertram   +9 more
doaj   +1 more source

Mangrove peat and algae leachates elicit rapid and contrasting molecular and microbial responses in coastal waters

Communications Earth & Environment, 2023
As sea level rises, previously sequestered blue carbon can be exported offshore as particulate or dissolved organic matter where it may be re-mineralized or sequestered.
Elise S. Morrison, Yina Liu, Albert Rivas-Ubach, João Henrique Fernandes Amaral, Michael Shields, Todd Z. Osborne, Rosalie Chu, Nicholas Ward, Thomas S. Bianchi   +8 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