Zobrazeno 1 - 10 of 221 pro vyhledávání: '"Frank, Dehairs"'
1
Akademický článek
Revisiting the distribution of oceanic N2 fixation and estimating diazotrophic contribution to marine production
Autor: Weiyi Tang, Seaver Wang, Debany Fonseca-Batista, Frank Dehairs, Scott Gifford, Aridane G. Gonzalez, Morgane Gallinari, Hélène Planquette, Géraldine Sarthou, Nicolas Cassar
Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019)
The geographical distribution and controlling factors of marine N2 fixation are understudied. Here the authors find increasing rates of N2 fixation from the Sargasso Sea to the coastal waters of North America, driven primarily by cyanobacterial diazo
Externí odkaz: https://doaj.org/article/8124811a3ac042f2a9617b1e2c06d46c
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2
Potential biases in dietary interpretation derived from stable isotope analysis of small dolphin teeth
Autor: Genyffer C. Troina, Clarissa R. Teixeira, Frank Dehairs, Eduardo R. Secchi, Silvina Botta
We analyzed δ13C and δ15N values in different tooth portions (Growth Layer Groups, GLGs) of franciscanas, Pontoporia blainvillei, to investigate their effect on whole tooth (WT) isotopic values and the implications for dietary estimates. Tooth port
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa3cf9a3968f352de0a8992742fede2e
https://doi.org/10.1016/j.marenvres.2022.105857
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3
Akademický článek
Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: A laboratory experiment.
Autor: Xuefeng Li, Nathalie Roevros, Frank Dehairs, Lei Chou
Publikováno v: PLoS ONE, Vol 12, Iss 11, p e0188615 (2017)
Diatoms constitute a major group of phytoplankton, accounting for ~20% of the world's primary production. It has been shown that iron (Fe) can be the limiting factor for phytoplankton growth, in particular, in the HNLC (High Nutrient Low Chlorophyll)
Externí odkaz: https://doaj.org/article/88a2b5fef1d348e88b4ee203d7c42c9d
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4
Strong Margin Influence on the Arctic Ocean Barium Cycle Revealed by Pan‐Arctic Synthesis
Autor: Laura M. Whitmore, Alan M. Shiller, Tristan J. Horner, Yang Xiang, Maureen E. Auro, Dorothea Bauch, Frank Dehairs, Phoebe J. Lam, Jingxuan Li, Maria T. Maldonado, Chantal Mears, Robert Newton, Angelica Pasqualini, Hélène Planquette, Robert Rember, Helmuth Thomas
Publikováno v: Journal Of Geophysical Research-oceans (2169-9275) (American Geophysical Union), 2022-04, Vol. 127, N. 4, P. e2021JC017417 (28p.)
Whitmore, L. M.; Shiller, A. M.; Horner, T. J.; Xiang, Y.; Auro, M.; Bauch, D.; Dehairs, F.; Lam, P.; Li, J.; Maldonado, M.; Mears, C.; Newton, R.; Pasqualini, A.; Planquette, H.; Rember, R.; Thomas, H.: Strong Margin Influence on the Arctic Ocean Barium Cycle Revealed by Pan-Arctic Synthesis. In: Journal of Geophysical Research : Oceans. Vol. 127 (2022) 4, e2021JC017417. (DOI: /10.1029/2021JC017417)
Journal of Geophysical Research: Oceans
Journal of Geophysical Research: Oceans, 2022, 127, ⟨10.1029/2021JC017417⟩
Early studies revealed relationships between barium (Ba), particulate organic carbon and silicate, suggesting applications for Ba as a paleoproductivity tracer and as a tracer of modern ocean circulation. But, what controls the distribution of barium
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e9c89788ac6b624023e6b94c6dee4d7
https://doi.org/10.1029/2021jc017417
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5
Akademický článek
Importance of N2-Fixation on the Productivity at the North-Western Azores Current/Front System, and the Abundance of Diazotrophic Unicellular Cyanobacteria.
Autor: Virginie Riou, Debany Fonseca-Batista, Arnout Roukaerts, Isabelle C Biegala, Shree Ram Prakya, Clara Magalhães Loureiro, Mariana Santos, Angel E Muniz-Piniella, Mara Schmiing, Marc Elskens, Natacha Brion, M Ana Martins, Frank Dehairs
Publikováno v: PLoS ONE, Vol 11, Iss 3, p e0150827 (2016)
To understand the impact of the northwestern Azores Current Front (NW-AzC/AzF) system on HCO3--and N2-fixation activities and unicellular diazotrophic cyanobacteria (UCYN) distribution, we combined geochemical and biological approaches from the oligo
Externí odkaz: https://doaj.org/article/9271a96b9c62463b9df3cb4fd0e44891
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6
Particulate Trace Element Export in the North Atlantic (GEOTRACES GA01 Transect, GEOVIDE Cruise)
Autor: Maxi Castrillejo, Frank Dehairs, Nolwenn Lemaitre, Catherine Jeandel, Morgane Gallinari, Frédéric Planchon, Hélène Planquette, Stephane Roig, Géraldine Sarthou
Publikováno v: ACS Earth and Space Chemistry
ACS Earth and Space Chemistry, ACS, 2020, ⟨10.1021/acsearthspacechem.0c00045⟩
Acs Earth And Space Chemistry (2472-3452) (American Chemical Society (ACS)), 2020-11, Vol. 4, N. 11, P. 2185-2204
ACS Earth and Space Chemistry, ACS, 2020, 4 (11), pp.2185-2204. ⟨10.1021/acsearthspacechem.0c00045⟩
ACS Earth and Space Chemistry, 2020, 4 (11), pp.2185-2204. ⟨10.1021/acsearthspacechem.0c00045⟩
International audience; Vertical export of particulate trace elements (pTEs) is a critically underconstrained aspect of their biogeochemistry. Here, we combine elemental analyses on large (>53 μm) particles and 234Th measurements to determine downwa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5a18faed43c89934197104200fc75d7
https://doi.org/10.1021/acsearthspacechem.0c00045
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7
Ecological impact of salt farming in mangroves on the habitat and food sources of Austruca occidentalis and Littoraria subvittata
Autor: Frank Dehairs, Marc Kochzius, Alex Nehemia, Margaret Chen, Natacha Brion
Publikováno v: Journal of Sea Research. 146:24-32
The impact of salt farming on the habitats and food sources of Austruca occidentalis and Littoraria subvittata was studied in mangroves along the coast of Tanzania using stable isotopes (13C and 15N) and sediment particle size analysis. The 13C and 1
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2673f06ddd53fed44f5025b43162bb3
https://doi.org/10.1016/j.seares.2019.01.004
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8
Evidence of high N2 fixation rates in the temperate northeast Atlantic
Autor: Morgane Gallinari, Marc Elskens, Debany Fonseca-Batista, Julie LaRoche, Lei Chou, Manon Tonnard, Valérie Michotey, Nolwenn Lemaitre, Hélène Planquette, François Fripiat, Virginie Riou, Frédéric Planchon, Natacha Brion, Xuefeng Li, Frank Dehairs, Géraldine Sarthou, Sophie Guasco, Florian Deman
Publikováno v: Biogeosciences. 16:999-1017
Diazotrophic activity and primary production (PP) were investigated along two transects (Belgica BG2014/14 and GEOVIDE cruises) off the western Iberian Margin and the Bay of Biscay in May 2014. Substantial N2 fixation activity was observed at 8 of th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef2626f62cee4ff5b652c94070e9be09
https://doi.org/10.5194/bg-16-999-2019
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10
Nitrate supply routes and impact of internal cycling in the North Atlantic Ocean inferred from nitrate isotopic composition
Autor: Maribel I. García-Ibáñez, E. P. D. N. Thilakarathne, E. Le Roy, Florian Deman, Frank Dehairs, François Fripiat, Debany Fonseca-Batista, Marc Elskens, Arnout Roukaerts
Publikováno v: Digital.CSIC: Repositorio Institucional del CSIC
Consejo Superior de Investigaciones Científicas (CSIC)
Global biogeochemical cycles, 35 (4
Digital.CSIC. Repositorio Institucional del CSIC
instname
Global Biogeochemical Cycles (0886-6236) (American Geophysical Union (AGU)), 2021-04, Vol. 35, N. 4, P. e2020GB006887 (15p.)
15 pages, 6 figures, 1 table
In this study we report full-depth water column profiles for nitrogen and oxygen isotopic composition (δ15N and δ18O) of nitrate (NO3−) during the GEOTRACES GA01 cruise (2014). This transect intersects the double
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca9a8af71352a91ae7a52d06d49b44a8
https://ueaeprints.uea.ac.uk/id/eprint/79761/
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