Results 61 to 70 of about 7,001 (209)

Photoalteration of macrophyte-derived chromophoric dissolved organic matter induces growth of single bacterial populations in a coastal lagoon

Journal of Limnology, 2013
Photochemical degradation is an important process involved in the decay of macrophytes, but little is known on the response of heterotrophic bacteria to the chromophoric dissolved organic matter (CDOM) derived from different plant species.
Claudia Piccini, Daniel Conde, Jakob Pernthaler, Ruben Sommaruga   +3 more
doaj   +1 more source

Characteristics of Chromophoric Dissolved Organic Matter (CDOM) Produced by Heterotrophic Bacteria Isolated from Aquaculture Systems

Journal of Marine Science and Engineering, 2022
Heterotrophic bacteria (HB) play an important role in aquatic ecosystems as recyclers of dissolved organic matter (DOM). The objective of this study was to characterize the spectral characteristics of intracellular (IC), and extracellular (EC) compounds ...
Mariel Gullian-Klanian, Gerardo Gold-Bouchot, María José Sánchez-Solís   +2 more
doaj   +1 more source

In situ photolysis of deep ice core contaminants by Çerenkov radiation of cosmic origin [PDF]

, 2003
Ice core contaminants should provide permanent paleoclimatic records if, as it is generally assumed, they remained frozen in place and isolated from sunlight by the reflective overlaying snow layers. The excess CO levels recently detected in 1100–1600 AD
Colussi, A. J., Hoffmann, M. R.
core   +1 more source

Biomass‐Derived Transparent Bamboo Composite Films with Europium‐Based Photoconversion for Energy‐Efficient Smart Agriculture

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 3, May 2026.
A biomass‐based transparent bamboo composite doped with europium efficiently converts UV light into photosynthetically active red light, significantly enhancing plant growth and providing a sustainable alternative to petroleum‐based agricultural films. The rational design of sustainable light‐conversion agricultural materials is critical for enhancing ...
Dandan Xu, Yingjie Cheng, Sheng He, Weiqi Leng, Yuhe Chen, Jinyue Dai, Mengjiao Sun, Zaixing Wu, Jingpeng Li   +8 more
wiley   +1 more source

Spectrophotometric studies of marine surfactants in the southern Baltic Sea

Oceanologia, 2015
It is well known that surfactants in the southern Baltic Sea constitute the organic matter from riverine waters discharges as well as the secondary degradation products of marine phytoplankton excretion.
Violetta Drozdowska, Marek Józefowicz
doaj   +1 more source

Distribution and source‐sink dynamics of H2 in the Western Tropical Pacific and their response to La Niña–induced upwelling

Limnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract Hydrogen (H2) influences the climate by prolonging the lifetime of greenhouse gases via consuming hydroxyl radicals. Despite the ocean's crucial role in regulating atmospheric H2, its marine biogeochemical cycle is poorly constrained. To bridge this gap, our research in the Western Tropical Pacific Ocean (WTPO) revealed a north–south ...
Yu‐Cheng Jiang, Gao‐Bin Xu, Heng‐Qi Liu, Jian Wang, Feng Xu, Shi‐Bo Yan, Xuan Zhang, Hong‐Hai Zhang   +7 more
wiley   +1 more source

Seasonal dynamics of dissolved organic matter in a small tropical estuary-coastal bay continuum: distribution, transformation, flux, and global perspectives

Frontiers in Marine Science
The export and transformation of riverine dissolved organic matter (DOM) at the river-sea interface are critical to understanding carbon budgets in tropical regions, yet remain underexplored in small watersheds.
Pengfei Liu, Kuan Jiang, Qi Tan, Fajin Chen, Renming Jia, Chao Wang, Chao Wang, Chao Wang, Chao Wang   +8 more
doaj   +1 more source

Machine Learning Algorithms for Chromophoric Dissolved Organic Matter (CDOM) Estimation Based on Landsat 8 Images

Remote Sensing, 2021
Chromophoric dissolved organic matter (CDOM) is crucial in the biogeochemical cycle and carbon cycle of aquatic environments. However, in inland waters, remotely sensed estimates of CDOM remain challenging due to the low optical signal of CDOM and ...
Xiao Sun, Yunlin Zhang, Yibo Zhang, Kun Shi, Yongqiang Zhou, Na Li   +5 more
doaj   +1 more source

An ultraviolet–visible spectroscopy system for studying real‐time pressure effects on enzyme activity

Limnology and Oceanography: Methods, Volume 24, Issue 5, May 2026.
Abstract Investigations of hydrostatic pressure effects on microbial enzymatic processing are challenging but critical for understanding element cycling in the world's oceans. In this study, we developed and tested a stainless‐steel pressure cell capable of withstanding up to 110 MPa of hydrostatic pressure (equivalent to ~ 11,000 m depth), featuring ...
Maria Papadimitraki, Urban Wünsch, John Paul Balmonte, Mathias Middelboe, Colin A. Stedmon, Karl M. Attard, Ronnie N. Glud   +6 more
wiley   +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