Keyword search (4,164 papers available)

"Gélinas Y" Authored Publications:

Title Authors PubMed ID
1 Lignin phenol abundances and ratios are modulated by their interactions with iron hydroxides in sediments Moritz A; Ezzati M; Gélinas Y; 41500137
CHEMBIOCHEM
2 Isolation of Marine Bacteria through a "Bait" Approach Pakseresht B; Schiffman Z; McLatchie S; Coulombe P; Soullane S; Imfeld A; Gélinas Y; Walsh D; Findlay B; 41297029
CHEMBIOCHEM
3 Insights from multiple stable isotopes (C, N, Cl) into the photodegradation of herbicides atrazine and metolachlor Levesque-Vargas M; Ohlund L; Sleno L; Gélinas Y; Höhener P; Ponsin V; 39716600
CHEMBIOCHEM
4 Isotopic and molecular analyses of n-alkanes in a temporal study of coastal sediment contributions to organic carbon degradation induced by algal bloom and terrestrial runoff Mirzaei Y; Douglas PMJ; Gélinas Y; 39700996
CHEMBIOCHEM
5 Investigating the kinetics of marine and terrestrial organic carbon incorporation and degradation in coastal bulk sediment and water settings through isotopic lenses Mirzaei Y; Gélinas Y; 39117203
CHEMBIOCHEM
6 Organic matter preservation through complexation with iron minerals in two basins of a dimictic boreal lake with contrasting deep water redox regimes Joshani A; Mirzaei Y; Barber A; Balind K; Gobeil C; Gélinas Y; 38499107
CHEMBIOCHEM
7 Using 13C enriched acetate in isotope labelling incubation experiments: a note of caution Leone F; Imfeld A; Mirzaei Y; Gélinas Y; 38097918
CHEMBIOCHEM
8 Deep ocean microbial communities produce more stable dissolved organic matter through the succession of rare prokaryotes LaBrie R; Péquin B; Fortin St-Gelais N; Yashayaev I; Cherrier J; Gélinas Y; Guillemette F; Podgorski DC; Spencer RGM; Tremblay L; Maranger R; 35857452
CHEMBIOCHEM
9 Pre- and post-industrial levels of polycyclic aromatic hydrocarbons in sediments from the Estuary and Gulf of St. Lawrence (eastern Canada) Corminboeuf A; Montero-Serrano JC; St-Louis R; Dalpé A; Gélinas Y; 34871900
CHEMBIOCHEM
10 Elemental, isotopic, and spectroscopic assessment of chemical fractionation of dissolved organic matter sampled with a portable reverse osmosis system. Ouellet A, Catana D, Plouhinec JB, Lucotte M, Gélinas Y 18504986
CHEMBIOCHEM
11 Anthropogenic and natural methane emissions from a shale gas exploration area of Quebec, Canada. Pinti DL, Gelinas Y, Moritz AM, Larocque M, Sano Y 27267724
CHEMBIOCHEM
12 Persistence of Escherichia coli in batch and continuous vermicomposting systems. Hénault-Ethier L, Martin VJ, Gélinas Y 27499290
BIOLOGY
13 Food-Web Complexity in Guaymas Basin Hydrothermal Vents and Cold Seeps. Portail M, Olu K, Dubois SF, Escobar-Briones E, Gelinas Y, Menot L, Sarrazin J 27683216
CHEMBIOCHEM
14 Preservation of organic matter in marine sediments by inner-sphere interactions with reactive iron. Barber A, Brandes J, Leri A, Lalonde K, Balind K, Wirick S, Wang J, Gélinas Y 28336935
CHEMBIOCHEM
15 Differences in Riverine and Pond Water Dissolved Organic Matter Composition and Sources in Canadian High Arctic Watersheds Affected by Active Layer Detachments. Wang JJ, Lafrenière MJ, Lamoureux SF, Simpson AJ, Gélinas Y, Simpson MJ 29301070
CHEMBIOCHEM

 

Title:Organic matter preservation through complexation with iron minerals in two basins of a dimictic boreal lake with contrasting deep water redox regimes
Authors:Joshani A,  Mirzaei Y,  Barber A,  Balind K,  Gobeil C,  Gélinas Y
Link:https://pubmed.ncbi.nlm.nih.gov/38499107/
DOI:10.1016/j.scitotenv.2024.171776
Publication:The Science of the total environment
Keywords:FTIR;  Lake sediment;  Organic carbon preservation;  Stable carbon and nitrogen isotopes;  iron; 
PMID:38499107 Category: Date Added:2024-03-19
Dept Affiliation: CHEMBIOCHEM
1 GEOTOP and Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke West, Montreal, QC H4B 1R6, Canada.
2 INRS-Eau Terre Environnement, 490 rue de la Couronne, Université du Québec, QC G1K 9A9, Canada.
3 GEOTOP and Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke West, Montreal, QC H4B 1R6, Canada. Electronic address: yves.gelinas@concordia.ca.

Description:

The biogeochemical cycles of iron and organic carbon (OC) are closely interconnected in terrestrial and aquatic systems. In ocean waters, the concentration of reactive Fe is tightly controlled by soluble organic ligands. In soils, Fe stabilizes OC by forming aggregates that shield OC from degradation. In lake sediments however, the role of Fe in the preservation of OC has not been explored as extensively yet. We investigated Fe-OC interactions in sediment collected from Lake Tantaré, in which two basins are characterized by contrasting redox conditions. These contrasting redox conditions provide an opportunity to assess their importance in the formation of stable Fe-OC complexes. On average, 30.1 ± 6.4 % of total OC was liberated upon reductively dissolving reactive iron. The Fe-associated and the non-Fe-associated OC pools were characterized at the elemental (OC, TN), isotopic (d13C, d15N) and functional group (FTIR) levels. Large differences in OC:Fe and TN:Fe ratios between the two basins were found which were not linked to OM chemical composition but rather to differences in reactive iron concentrations stemming from the higher abundance of iron sulfides in the anoxic basin. Nevertheless, since the affinity of OM for iron sulfides is lower than that for iron hydroxides, using OC:Fe and TN:Fe ratios as a diagnostic tool for the type of OM-Fe interactions should be done with care in anoxic environment. Same caution should be considered for oxic sediments due to the variation of the proportion of iron hydroxides associated with OM from sample to sample.





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