A5075116606- Microbial Community Ecology and Physiology
- Wastewater Treatment and Nitrogen Removal
- Anaerobic Digestion and Biogas Production
- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Water Treatment and Disinfection
- Microbial Fuel Cells and Bioremediation
- Polar Research and Ecology
- Mercury impact and mitigation studies
- Odor and Emission Control Technologies
- Microbial Metabolic Engineering and Bioproduction
- Marine and coastal ecosystems
- Gut microbiota and health
- Soil Carbon and Nitrogen Dynamics
- Protist diversity and phylogeny
- Biofuel production and bioconversion
- Climate change and permafrost
- Environmental DNA in Biodiversity Studies
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- Marine Biology and Ecology Research
- Analytical chemistry methods development
- Soil Geostatistics and Mapping
- Genomics and Phylogenetic Studies
- Marine animal studies overview
Institut Méditerranéen d’Océanologie
2016-2024
Institut de Recherche pour le Développement
2016-2024
Centre National de la Recherche Scientifique
2016-2024
Institute of Ecology and Biodiversity
2020-2024
University of Chile
2020-2024
Millennium Institute for Integrative Biology
2023-2024
Aix-Marseille Université
2016-2024
Université de Reims Champagne-Ardenne
2024
Kitasato University
2024
University of Geneva
2024
Arctic lakes emit methane (CH4) to the atmosphere. The magnitude of this flux could increase with permafrost thaw but might also be mitigated by microbial CH4 oxidation. Methane oxidation in oxic water has been extensively studied, while contribution anaerobic (AOM) mitigation is not fully understood. We have investigated four Northern Siberian stratified an area discontinuous nearby Igarka, Russia. Analyses concentrations column demonstrated that 60 100% upward diffusing was oxidized anoxic...
Summary Methylmercury is a neurotoxin that bioaccumulates from seawater to high concentrations in marine fish, putting human and ecosystem health at risk. High methylmercury levels have been found the oxic subsurface waters of all oceans, but only anaerobic microorganisms shown efficiently produce anoxic environments. The microaerophilic nitrite‐oxidizing bacteria Nitrospina previously suggested as possible mercury methylating Antarctic sea ice. However, responsible for processing inorganic...
The spatial and temporal dynamics of microbial community structure function were surveyed in duplicated woodchip-biofilters operated under constant conditions for 231 days. contaminated gaseous stream treatment was representative composting emissions, included ammonia, dimethyl disulfide a mixture five oxygenated volatile organic compounds. diversity investigated by denaturing gradient gel electrophoresis on 16S rRNA gene fragments. During the first 42 days, acclimatization revealed...
Freshwater ecosystems are responsible for an important part of the methane (CH4) emissions which likely to change with global warming. This study aims evaluate temperature-induced (from 5 20 °C) changes on microbial community structure and methanogenic pathways in five sub-Antarctic lake sediments from Magallanes strait Cape Horn, Chile. We combined situ CH4 flux measurements, production rates (MPRs), gene abundance quantification analysis (metabarcoding 16S rRNA gene). Under unamended...
Microbial communities have a key role for the performance of engineered ecosystems such as waste gas biofilters. Maintaining constant despite fluctuating environmental conditions is prime interest, but it highly challenging because mechanisms that drive response microbial to disturbances still be disentangled. Here we demonstrate bioprocess and stability can improved reinforced in face disturbances, through rationally predefined strategy resource management (MRM). This was experimentally...
Both industrial effluent discharge and the resuspension of contaminated marine sediments are important sources trace metals in seawater which potentially affect ecosystems. The aim this study was to evaluate impact wastewaters having acidic pH (2–3) containing on microbial diversity coastal ecosystem Gulf Gabès (Tunisia, southern Mediterranean Sea) subjected events sediments. Four elements (As, Cd, U V) were monitored during 10-day sediment experiments. highest enrichment dissolved phase...
To investigate the distribution and dynamics of microbial community in anaerobic digestion at agitated non-agitated condition, 454 pyrosequencing 16s rRNA was conducted. It revealed distinct compositions between two digesters their progressive shifting over time. Methanogens syntrophic bacteria were found much less abundant digester, which mainly attributed to presence bacterial genera Acetanaerobacterium Ruminococcus with relatively high abundance. The characterization corroborated...
Abstract. A critical aspect of predicting soil organic carbon (SOC) concentrations is the lack available information; where information on characteristics available, it usually focused regions high agricultural interest. To date, in Chile, a large proportion SOC data have been collected areas intensive or forestry use; however, vast beyond these forms land use few no available. Here we present new database for country, which result an unprecedented national effort under framework Global Soil...
Anaerobic digestion (AD) is an attractive biotechnological process for wastewater bioremediation and bioenergy production in the form of methane-rich biogas. However, AD can be inhibited by ammonium generated protein-rich effluent, commonly found agro-industrial activities.
Abatus agassizii is an irregular sea urchin species that inhabits shallow waters of South Georgia and Shetlands Islands. As a deposit-feeder, A. nutrition relies on the ingestion surrounding sediment in which it lives barely burrowed. Despite low complexity its feeding habit, harbours long twice-looped digestive tract suggesting may host complex bacterial community. Here we characterised gut microbiota specimens from two populations at south King George Island West Antarctic Peninsula. Using...
Understanding the factors that sculpt fish gut microbiome is challenging, especially in natural populations characterized by high environmental and host genomic complexity. However, closely related hosts are valuable models for deciphering contribution of evolutionary history to assembly, through underscoring phylosymbiosis co-phylogeny patterns. Here, we propose recent diversification several
It is commonly assumed that methane (CH4) released by lakes into the atmosphere mainly produced in anoxic sediment and transported diffusion or ebullition through water column to surface of lake. In contrast prevailing idea, it has been gradually established epilimnetic CH4 does not originate exclusively from sediments but also locally laterally littoral zone. Therefore, cycling epilimnion hypolimnion might be as closely linked previously thought. We utilized a high-resolution method used...
Abstract High latitudes are experiencing intense ecosystem changes with climate warming. The underlying methane (CH 4 ) cycling dynamics remain unresolved, despite its crucial climatic feedback. Atmospheric CH emissions heterogeneous, resulting from local geochemical drivers, global factors, and microbial production/consumption balance. Holistic studies mandatory to capture complexity. Here, we report a large set of integrated biogeochemical data 387 samples, using concerted sampling...