Jill Sutton

Jill Sutton
Université de Bretagne Occidentale | UBO · Département de Biologie

PhD

About

32
Publications
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Introduction
Jill Sutton currently works at the Département de Biologie, Université de Bretagne Occidentale.

Publications

Publications (32)
Article
Full-text available
Marine silicon cycle is one of the key biogeochemical cycles in the marine realm which can regulate the global atmospheric carbon dioxide concentration, pH of seawater and it also plays a significant role in the geochemical cycles of many other elements, such as nitrogen (N), phosphorus (P), iron (Fe) and aluminum (Al). The close intertwined coupli...
Article
Full-text available
Biological productivity in the ocean directly influences the partitioning of carbon between the atmosphere and ocean interior. Through this carbon cycle feedback, changing ocean productivity has long been hypothesized as a key pathway for modulating past atmospheric carbon dioxide levels and hence global climate. Because phytoplankton preferentiall...
Preprint
Full-text available
The element silicon (Si) is required for the growth of silicified organisms in marine environments, such as diatoms, which consume vast amounts of Si together with N, P, and C, connecting the biogeochemical cycles of these elements. Thus, understanding the Si cycle in the ocean is critical for understanding issues such as carbon sequestration by th...
Article
Full-text available
The element silicon (Si) is required for the growth of silicified organisms in marine environments, such as diatoms. These organisms consume vast amounts of Si together with N, P, and C, connecting the biogeochemical cycles of these elements. Thus, understanding the Si cycle in the ocean is critical for understanding wider issues such as carbon seq...
Article
At the place where the submarine Aden Ridge encroaches on the African continent and interacts with the East African Rift system, two small basins form: Ghoubbet-al-Kharab and Lake Asal. Whereas Ghoubbet-al-Kharab is connected to the open ocean, Lake Asal is a typical example of oceanic “embryo”, which is defined as a system that is detached from th...
Article
Full-text available
The response of marine-calcifying organisms to ocean acidification (OA) is highly variable, although the mechanisms behind this variability are not well understood. Here, we use the boron isotopic composition (δ ¹¹ B) of biogenic calcium carbonate to investigate the extent to which organisms’ ability to regulate pH at their site of calcification (p...
Article
Full-text available
The GEOVIDE cruise, a collaborative project within the framework of the international GEOTRACES programme, was conducted along the French-led section in the North Atlantic Ocean (Section GA01), between 15 May and 30 June 2014. In this special issue (https://www.biogeosciences.net/special_issue900.html), results from GEOVIDE, including physical ocea...
Article
Full-text available
The stable isotope composition of dissolved silicon in seawater (δ30SiDSi) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40–60° N) and Labrador Sea. Variations in δ30SiDSi below 500 m were closely tied to the distribution of water masses. Higher δ30SiDSi values are associated with interm...
Article
Full-text available
The GEOVIDE cruise, a collaborative project within the framework of the international GEOTRACES programme, was conducted along the French-led section in the North Atlantic Ocean (Section GA01), between 15 May and 30 June 2014. In this Special Issue, results from GEOVIDE, including physical oceanography and trace element and isotope cyclings, are pr...
Article
Full-text available
The stable isotope composition of dissolved silicon in seawater (δ³⁰SiDSi) was examined at 10 stations along the GEOVIDE section, spanning the North Atlantic Ocean (40° N–60° N) and Labrador Sea. Near-surface water δ³⁰SiDSi could not be evaluated due to the very low dissolved silicon (DSi) concentrations (30SiDSi below 500 m were closely tied to th...
Article
Full-text available
The boron isotope composition (δ11B) of marine biogenic carbonates has been predominantly studied as a proxy for monitoring past changes in seawater pH and carbonate chemistry. However, a number of assumptions regarding chemical kinetics and thermodynamic isotope exchange reactions are required to derive seawater pH from δ11B biogenic carbonates. I...
Article
Full-text available
Silicon (Si) is the second most abundant element in the Earth's crust and is an important nutrient in the ocean. The global Si cycle plays a critical role in regulating primary productivity and carbon cycling on the continents and in the oceans. Development of the analytical tools used to study the sources, sinks, and fluxes of the global Si cycle...
Article
Full-text available
The isotope composition of boron (B) in marine biogenic carbonates has been predominantly studied as a proxy for monitoring past changes in seawater pH and carbonate chemistry. In order to derive seawater pH from boron isotope ratio data, a number of assumptions related to chemical kinetics and themodynamic isotope exchange reactions are necessary....
Article
Full-text available
The first inter-calibration study of the stable silicon isotope composition of dissolved silicic acid in seawater, δ³⁰Si(OH)4, is presented as a contribution to the international GEOTRACES program. Eleven laboratories from seven countries analyzed two seawater samples from the North Pacific subtropical gyre (Station ALOHA) collected at 300 m and at...
Article
Full-text available
Balanced budgets for dissolved inorganic N (DIN) and particulate N (PN) were constructed for the Strait of Georgia (SoG), a semi-enclosed coastal sea off the west coast of British Columbia, Canada. The dominant control on the N budget is the advection of DIN into and out of the SoG via Haro Strait. The annual influx of DIN by advection from the Pac...
Article
Full-text available
1] Seventeen inorganic germanium and silicon concentration profiles collected from the Atlantic, southwest Pacific, and Southern oceans are presented. A plot of germanium concentration versus silicon concentration produced a near‐linear line with a slope of 0.760 × 10 −6 (±0.004) and an intercept of 1.27 (±0.24) pmol L −1 (r 2 = 0.993, p < 0.001)....
Article
Full-text available
Balanced budgets for dissolved inorganic N (DIN) and particulate N (PN) were constructed for the Strait of Georgia (SoG), a semi-enclosed coastal sea off the west coast of British Columbia, Canada. The dominant control on the N budget is the advection of DIN into and out of the SoG via Haro Strait. The annual influx of DIN by advection from the Pac...
Article
Full-text available
Fractionation of silicon (Si) isotopes was measured in seven species (nine strains) of polar and sub-polar marine diatoms grown in semi-continuous unialgal cultures under optimal irradiance and temperature for each diatom strain. Results from this work provide the first evidence that Si isotope fractionation by diatoms is species-dependent. The gre...
Conference Paper
Variations in the natural abundance of stable isotopes of silicon (expressed as δ30Si in %) are a key tool for studying the marine silicon (Si) cycle in modern and ancient oceans. In particular, this tool can be used to track relative differences in silicic acid drawdown in surface waters by siliceous microplankton. Diatoms are siliceous phytoplank...
Thesis
This research endeavoured to lay the groundwork in understanding the oceanic cycling of silicon (Si) during the past, with a particular focus on the Southern Ocean, using a multi-proxy and multi-organism approach. Two oceanographic tracers, one based on the fractionation of natural abundances of stable Si isotopes and the other based on the germani...
Article
The silicon (Si) isotope (δ30Si) composition of deep-sea sponges from near Antarctica, subantarctic waters (Tasmania Seamounts) and subtropical waters north of New Zealand vary widely between + 0.87‰ and − 3.40‰ (vs. NBS28). Depth profiles show that sponge δ30Si compositions trend to lower values with increasing depth. This is exemplified by sponge...
Article
Here we present a 7 to 70 ka record of coupled Ge/Si and delta30Si of diatomaceous opal from a low silicon environment. The diatom samples were collected from Eltanin sediment core E33-22 located north of the Antarctic Polar Front (APF) in the Southeast Pacific Ocean (120 W and 54.6 S). The surface water silicon concentration overlying this core si...
Article
The silicon (Si) isotope (δ 30 Si) composition of deep-sea sponges from near Antarctica, subantarctic waters (Tasmania Seamounts) and subtropical waters north of New Zealand vary widely between +0.87‰ and − 3.40‰ (vs. NBS28). Depth profiles show that sponge δ 30 Si compositions trend to lower values with increasing depth. This is exemplified by spo...
Article
Full-text available
This study compared the ability of juvenile non-transgenic (NT) and transgenic growth hormone (T; gene construct OnMTGH1) coho salmon (Oncorhynchus kisutch) to metabolically utilize energy from lipid and carbohydrate for growth at two dietary protein concentrations. Triplicate groups of size-matched (initial weight, 28.2–29.1 g) NT and T salmon hel...
Article
Full-text available
Juvenile Atlantic salmon (Salmo salar) held in 11.6–13.0 °C sea water were fed to satiation for 126 days, 1 of 12 diets formulated to contain equivalent crude protein (500 g/kg) and gross energy contents (21.2–21.6 MJ/kg). The diets contained two different supplemental levels of copper (10 or 35 mg/kg; determined levels ranged from 7 to 14 or 24 to...

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Projects

Projects (4)
Project
The RadiCal project offers to develop Radiolarians as a novel palaeo-proxy for marine silicon cycling by Calibrating the silicon stable isotope composition (δ30Si) of these organisms to their modern environment. This objective will be achieved by applying an innovative multidisciplinary approach evaluating the influence of the modern environment and taxonomy on the variability of radiolarian silicon isotope fractionation (1) in situ, (2) under laboratory-controlled conditions, and (3) from a core-top calibration study from a variety of different oceanographic basins within the Southern Ocean.