New insights into mechanisms of sunlight- and dark-mediated high-temperature accelerated diurnal production-degradation of fluorescent DOM in lake waters

The Science of the Total Environment
Xuemei YangKhan M G Mostofa

Abstract

The production of fluorescent dissolved organic matter (FDOM) by phytoplankton and its subsequent degradation, both of which occur constantly under diurnal-day time sunlight and by night time dark-microbial respiration processes in the upper layer of surface waters, influence markedly several biogeochemical processes and functions in aquatic environments and can be feasibly related to global warming (GW). In this work sunlight-mediated high-temperature was shown to accelerate the production of FDOM, but also its complete disappearance over a 24-h diurnal period in July at the highest air and water temperatures (respectively, 41.1 and 33.5 °C), differently from lower temperature months. Extracellular polymeric substances (EPS), an early-state DOM, were produced by phytoplankton in July in the early morning (6:00-9:00), then they were degraded into four FDOM components over midday (10:00-15:00), which was followed by simultaneous production and almost complete degradation of FDOM with reformation of EPS during the night (2:00-6:00). Such transformations occurred simultaneously with the fluctuating production of nutrients, dissolved organic carbon (DOC), dissolved organic nitrogen (DON) and the two isotopes (δ15N and δ18O) of NO3-...Continue Reading

References

Mar 17, 2001·Trends in Microbiology·H F Jenkinson, H M Lappin-Scott
Dec 3, 2002·Nature·Paul A del Giorgio, Carlos M Duarte
Nov 16, 2005·Proceedings of the National Academy of Sciences of the United States of America·Nathaniel B Weston, Samantha B Joye
Jul 13, 2006·Environmental Science & Technology·Davide VioneCecilia Arsene
Jan 30, 2007·Chemical Reviews·Paula G Coble
Jul 21, 2007·Aquatic Toxicology·Anna R WinterP Jefferson Curtis
Aug 3, 2010·Nature Reviews. Microbiology·Hans-Curt Flemming, Jost Wingender
Oct 26, 2010·Water Research·Octavio Perez-GarciaYoav Bashan
Feb 10, 2011·Analytical Chemistry·Matthew R McIlvin, Karen L Casciotti
Feb 27, 2015·Environmental Science & Technology·Garrett McKay, Fernando L Rosario-Ortiz
Dec 3, 2015·Chemical Reviews·Sasho GligorovskiDavide Vione
Dec 8, 2015·Scientific Reports·Alberto Malinverno, Ernesto A Martinez
Feb 11, 2016·Nature·Lionel GuidiGabriel Gorsky
Jul 9, 2016·Science·Thomas WernbergShaun Wilson
Sep 7, 2016·Journal of Environmental Sciences (China)·Khan M G Mostofa, Hiroshi Sakugawa
Sep 28, 2017·Biotechnology Advances·Jianjun HuDuu-Jong Lee
Apr 27, 2018·The ISME Journal·Emilio MarañónBeatriz Mouriño-Carballido
Aug 11, 2018·Nature Communications·Maren Zark, Thorsten Dittmar
Aug 17, 2018·Nature·Thomas L FrölicherNicolas Gruber
Sep 19, 2019·Environmental Science & Technology·Xia LiangSiliang Li
Sep 20, 2019·Nature·Joeri RogeljMalte Meinshausen
Oct 12, 2019·Science·O Hoegh-GuldbergG Zhou
Dec 1, 2019·The Science of the Total Environment·Wan-Fa WangCong-Qiang Liu
Jun 2, 2020·Environmental Science & Technology·Han-Qing Yu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.