A5042464220- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Coastal and Marine Management
- Oceanographic and Atmospheric Processes
- Methane Hydrates and Related Phenomena
- Microbial Community Ecology and Physiology
- Geochemistry and Elemental Analysis
- Ocean Acidification Effects and Responses
- Diatoms and Algae Research
- Marine and fisheries research
- Atmospheric and Environmental Gas Dynamics
- Oil Spill Detection and Mitigation
- Isotope Analysis in Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and environmental studies
- Marine Bivalve and Aquaculture Studies
- Integrated Water Resources Management
- Water Quality Monitoring and Analysis
- Environmental Chemistry and Analysis
- French Urban and Social Studies
- Geomagnetism and Paleomagnetism Studies
- Wastewater Treatment and Nitrogen Removal
- Marine and coastal plant biology
Institut Universitaire Européen de la Mer
2013-2024
Université de Bretagne Occidentale
2012-2024
Ifremer
2017-2024
Centre National de la Recherche Scientifique
2007-2022
Laboratoire des Sciences de l'Environnement Marin
2012-2022
Institut de Recherche pour le Développement
2010-2022
Second Institute of Oceanography
2018-2021
Florida State University
2018
Stennis Space Center
2018
University of Southern Mississippi
2018
We estimate the global rate of biogenic silica production in ocean to be between 200 and 280 × 10 12 mol Si yr −1 . The upper limit is derived from information on primary productivity oceans, relative contribution diatoms diatom Si/C ratios. lower independently using a multi‐compartment model nutrient transport particle flux, field data balance dissolution ocean. Our 30–50% than several previous estimates, due new indicating values for both their Globally, at least 50% produced by euphotic...
The net inputs of silicic acid (dissolved silica) to the world ocean have been revised 6.1 +/- 2.0 teramoles silicon per year (1 teramole = 10(12) moles). major contribution (about 80 percent) comes from rivers, whose average concentration is 150 micromolar. These are reasonably balanced by ouputs biogenic silica 7.1 1.8 in modern marine sediments. gross production (the transformation dissolved silicate particulate skeletal material) surface waters was estimated be 240 40 year, and...
Over the past few decades, we have realized that silica cycle is strongly intertwined with other major biogeochemical cycles, like those of carbon and nitrogen, as such intimately related to marine primary production, efficiency export deep sea, inventory dioxide in atmosphere. For nearly 20 years, budget compiled by Tréguer et al. (1995) , its exploration reservoirs, processes, sources, sinks cycle, has provided context information fundamental study cycle. Today, needs revisiting...
Abstract. The element silicon (Si) is required for the growth of silicified organisms in marine environments, such as diatoms. These consume vast amounts Si together with N, P, and C, connecting biogeochemical cycles these elements. Thus, understanding cycle ocean critical wider issues carbon sequestration by ocean's biological pump. In this review, we show that recent advances process studies indicate total inputs outputs, to from world ocean, are 57 % 37 higher, respectively, than previous...
During the austral summer of 1990 an intense, diatom-dominated, ice-edge phytoplankton bloom in southwestern Ross Sea resulted depletion silicic acid, nitrate and phosphate to concentrations much lower than is typical for Antarctic surface waters.Silicic acid was depleted <6 FM within core meltwater field, where biogenic particulate silica exceeded 20 pm01 1-' Three Si uptake kinetic experiments were conducted on natural assemblages from nutrient-depleted zone; 30Si-labeled Si(OH), used...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 255:27-41 (2003) - doi:10.3354/meps255027 Dynamics of particulate organic matter δ15N and δ13C during spring phytoplankton blooms in a macrotidal ecosystem (Bay Seine, France) N. Savoye1,5,*, A. Aminot2, P. Tréguer1, M. Fontugne3, Naulet4, R. Kérouel2 1Laboratoire des Sciences de l¹Environnement Marin, CNRS...
Coastal marine systems, the interface between ocean and terrestrial realms, are among most important systems on planet both ecologically economically because of their crucial role in earth system functioning.Although direct impacts human activities physical, chemical biological components these have been widely documented, potential influence climate variability is less well known.Here, we used data from Service d'Observation en Milieu Littoral (SOMLIT), a monitoring programme that has since...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 161:213-224 (1997) - doi:10.3354/meps161213 Impacts of high-nitrate freshwater inputs on macrotidal ecosystems. I. Seasonal evolution nutrient limitation for diatom-dominated phytoplankton Bay Brest (France) Yolanda Del Amo1,*, Olivier Le Pape2, Paul Tréguer1, Bernard Quéguiner1, Alain Ménesguen2, Aminot2...
Abstract. We present the distribution of water masses along GEOTRACES-GA01 section during GEOVIDE cruise, which crossed subpolar North Atlantic Ocean and Labrador Sea in summer 2014. The mass structure resulting from an extended optimum multiparameter (eOMP) analysis provides framework for interpreting observed distributions trace elements their isotopes. Central Waters Subpolar Mode (SPMW) dominated upper part section. At intermediate depths, dominant was Water, while deep parts were filled...
Abstract Siliceous polycystines and phaeodarians are open‐ocean planktonic protists found throughout the water column characterized by complex siliceous skeletons that formed, at least partly, through uptake of silicic acid. These contribute to marine organic carbon (C) biogenic silica (bSi) pools, but little is known about their contribution (Si) biogeochemical cycle. Here we report first measurements Si rate polycystine phaeodarian cells from samples collected in Mediterranean Sea using 32...
Europe – China Frontier Forums on the progress in ocean science and technology under Ocean Decade frameworkJing Zhang (ECNU, SJTU, China) Paul Tréguer (IUEM-UBO, Brest, France), collaboration with Towards IPOS The is a 10-year framework initiative of UNESCO aiming to identify, generate use critical knowledge manage sustainably. Within this framework, European Academy Science (EurASc), together Chinese (CAS), organise technology. They provide platform for marine scientists engineers share...