Results 71 to 80 of about 12,654 (257)

Modern and late Pleistocene particulate organic carbon transport by the Amazon River: Insights from long-chain alkyl diols [PDF]

, 2019
The relative abundance of the C32 1,15 long-chain alkyl diol (LCD) is an emerging proxy for the input of riverine aquatic particulate organic carbon (POC) into coastal oceans.
Häggi, C., Hefter, Jens, Sawakuchi, A.O., Organic geochemistry & molecular biogeology, Schefuß, Enno, Baker, P.A., Mulitza, Stefan, Mulitza, S., Organic geochemistry, Schouten, S., Bertassoli, Dailson J., Zabel, Matthias, Schefuß, E., Bertassoli Jr., Dailson J, Chiessi, C.M., Schouten, Stefan, Zabel, M., Sawakuchi, André O., Chiessi, Cristiano M., Häggi, Christoph, Hefter, J., Bertassoli, D.J., Baker, Paul A.   +22 more
core   +1 more source

Exploring Interactive Effects of Arsenic and Selenium Exposure on Larval Zebrafish (Danio rerio)

Environmental Toxicology, EarlyView.
ABSTRACT Arsenic contamination in aquatic ecosystems is a major environmental concern. Selenium (Se) helps mitigate oxidative stress and hence could reduce the toxic effects of arsenic. However, Se can also be toxic at high concentrations. Given that these metalloids commonly co‐occur in the environment, there is a pressing need for further research ...
Owen Luo, Jinnath Rehana Ritu, Md Helal Uddin, Sravan Kumar Putnala, Mahesh Rachamalla, Som Niyogi, Douglas P. Chivers   +6 more
wiley   +1 more source

A laboratory experiment on the behaviour of soil-derived core and intact polar GDGTs in aquatic environments

, 2015
We have performed incubation experiments in order to examine the behaviour of soil-derived branched glycerol dialkyl glycerol tetraether (brGDGT) membrane lipids upon entering an aquatic environment and to evaluate the processes that potentially take ...
F. Peterse, Peterse, Francien, Organic geochemistry & molecular biogeology, Moy, Christopher M., Organic geochemistry, Peterse, F., Eglinton, Timothy I., Eglinton, T. I., C. M. Moy, Moy, C. M., T. I. Eglinton   +10 more
core   +1 more source

The Employment of Hydrogen Peroxide in Water Disinfection Poses a Threat to Aquatic Ecosystems Because of Its Toxicity to Nontarget Organisms

Environmental Toxicology, EarlyView.
ABSTRACT Hydrogen peroxide is widely used in water and wastewater treatment, particularly in advanced oxidation processes that aid in the degradation of compounds and microbial disinfection. Despite concerns about potential environmental contamination, its impact on freshwater ecosystems remains inadequately studied.
Letícia Queiroz Almeida, Thayrine Dias Carlos, Leydiane Barbosa Bezerra, Rone S. Barbosa, Nelson Luís Gonçalves Dias Souza, Douglas Henrique Pereira, Renato Almeida Sarmento, Grasiele Soares Cavallini   +7 more
wiley   +1 more source

Contrasting distributions of glycerol dialkyl glycerol tetraethers (GDGTs) in speleothems and associated soils

, 2014
Glycerol dialkyl glycerol tetraethers (GDGTs) preserved in speleothems can form useful records of terrestrial palaeotemperature. However, understanding of the sources of these compounds in caves is limited, particularly whether or not they should be ...
Organic geochemistry & molecular biogeology, Blyth, Alison, Schouten, S, Schouten, S., Organic geochemistry, Jex, CN, Jex, Catherine, Khan, Stuart, Khan, SJ ; https://orcid.org/, Khan, S.J., Schouten, Stefan, Blyth, AJ, Baker, Andy, Baker, A ; https://orcid.org/, Blyth, A.J., Jex, C.N., Baker, A.   +16 more
core   +1 more source

Late Quaternary biomass burning in Northwest Africa and interactions with climate, vegetation, and humans [PDF]

, 2019
Biomass burning on the African continent is widespread, and interactions with climate, vegetation dynamics, and biogeochemical cycling are complex. To obtain a better understanding of these complex relationships, African fire history has been widely ...
Schreuder, Laura T., Sinninghe Damsté, Jaap S., Hopmans, E.C., Organic geochemistry & molecular biogeology, Hopmans, Ellen C., Schefuß, Enno, Stefan Schouten, Mulitza, S., Mulitza, Stefan, Enno Schefuß, Schreuder, L.T., Schouten, S., Jaap S. Sinninghe Damsté, Organic geochemistry, Sinninghe Damsté, J.S., Stefan Mulitza, Schefuß, E., Castañeda, I.S., Laura T. Schreuder, Schouten, Stefan, Ellen C. Hopmans, Castañeda, Isla S., Isla S. Castañeda   +22 more
core   +1 more source

Ecotoxicological Insights From Ex Vivo Exposure of Whole Blood to PFOS and Glyphosate: Oxidative Stress and Immune Disruption

Environmental Toxicology, EarlyView.
ABSTRACT This study investigated the immunomodulatory effects of PFOS and glyphosate (GLY), both individually and in combination, on the whole blood of three ruminant species (cow, goats, and sheep) exposed ex vivo to environmentally relevant concentrations. The research focused on key biomarkers of oxidative stress (MDA), inflammation (myeloperoxidase
Francesco Molinari, Gianluca Antonio Franco, Francesca Inferrera, Nicla Tranchida, Antonella Iaconis, Maria Rizzo, Giuseppe Piccione, Enrico Gugliandolo, Davide Di Paola   +8 more
wiley   +1 more source

Diving Deeper Into Mechanisms of Acrylamide‐Induced Toxicity: RNA Sequencing Reveals Transcriptomic Alteration and Retrotransposon Expression in Drosophila melanogaster

Environmental Toxicology, EarlyView.
ABSTRACT Given the inevitability of human and animal exposure to acrylamide, there is increasing concern regarding its potential health risks. While a number of molecular mechanisms have been proposed, the complexity of acrylamide toxicological pathways and interactions remains incompletely characterized.
Oluwabukola Mary Farodoye, Titilayomi Ayomide Otenaike, Daniela Moreira Mombach, Monica Medeiros Silva, Amos Olalekan Abolaji, Elgion Lucio Da Silva Loreto   +5 more
wiley   +1 more source

(Table 4) Organic geochemistry at DSDP Hole 80-551

, 1985
(Table 4) Organic geochemistry at DSDP Hole 80 ...
D.W. Waples, Robert Cunningham (1998031), Waples, Douglas W, R. Cunningham, Cunningham, Robert, Douglas W Waples (7996496)   +5 more
core   +1 more source

Micronuclei and Other Nuclear Abnormalities in Patella Limpet as Biomarkers of Cytogenotoxicity in Recreational Port Waters

Environmental Toxicology, EarlyView.
ABSTRACT Over the past decades, the growth in human population and economic activities has led to an increase in maritime traffic. This rise puts additional pressure on marine environments, vessel fuel spills being considered to have a major impact on the ecosystem.
Carlos Valiente‐Diaz, Eva Garcia‐Vazquez, Verónica Soto‐López   +2 more
wiley   +1 more source