Concept
Colonne d'eau
Publications associées (41)
Uptake without inactivation of human adenovirus type 2 by Tetrahymena pyriformis ciliates
Tamar Kohn, Margot Ninon Lauren Olive
Human adenoviruses are ubiquitous contaminants of surface water. Indigenous protists may interact with adenoviruses and contribute to their removal from the water column, though the associated kinetics and mechanisms differ between protist species. In this ...
2023Controlling factors of phytoplankton distribution in the river–lake transition zone of a large lake
David Andrew Barry, Frédéric Charles Soulignac, Matthieu Fallet
River–lake transition zones have been identified as major drivers of phytoplankton growth. With climate change reducing the frequency of complete lake overturns, it is expected that the Rhône River, the main tributary to Lake Geneva (France/Switzerland), w ...
2023Detritus-hosted methanogenesis sustains the methane paradox in an alpine lake
Damien Bouffard, Oscar Rodrigo Sepúlveda Steiner
Accumulation of methane in oxic waters of lakes and the ocean has been widely reported. Despite the importance for the greenhouse gas budget, mechanistic controls of such "methane paradox" remain elusive. Here, we use a combination of CH4 concentration and ...
WILEY2022Insights into the Horizontal and Vertical Profiles of Microplastics in a River Emptying into the Sea Affected by Intensive Anthropogenic Activities in Northern China
Florian Frédéric Vincent Breider, Yang Liu, Wenxin Liu
Studies focused only on surface water may underestimate microplastic abundance in aquatic environments. This was the first survey to investigate the vertical (surface, intermediate, and bottom waters) distribution and composition of microplastics (MPs) in ...
2021Competition between cooling and shortwave radiation in shaping near-surface convection in pelagic waters of Lake Geneva
When lake surface waters above the temperature of maximum density 4◦C cools, the verysurface fluid parcels become denser than their neighbours below. The latter process leads to a gravitationally unstable density distribution which may trigger ‘free convec ...
2021Mixing processes and their ecological implications: From vertical to lateral variability in stratified lakes
Oscar Rodrigo Sepúlveda Steiner
The physical environment of natural waters influences biogeochemical processes to generate specific ecological niches, promoting biophysical interactions. Bacteria and phytoplankton communities can form spatial structures, such as layers and patches. The p ...
EPFL2020Continuous in situ measurement of dissolved methane in Lake Kivu using a membrane inlet laser spectrometer
We report the first high-resolution continuous profile of dissolved methane in the shallow water of Lake Kivu, Rwanda. The measurements were performed using an in situ dissolved gas sensor, called Sub-Ocean, based on a patented membrane-based extraction te ...
Copernicus GmbH2020Model-based data analysis of the effect of winter mixing on primary production in a lake under reoligotrophication
Alfred Johny Wüest, Hugo Nicolás Ulloa Sánchez, Camille Roland Marie Minaudo, Shubham Krishna
Nutrient loading, in combination with climate change are important drivers of primary productivity in lakes. Understanding and forecasting future changes in primary production (PP) in response to local and global forcing are major challenges for developing ...
2020Diel quenching of Southern Ocean phytoplankton fluorescence is related to iron limitation
Evaluation of photosynthetic competency in time and space is critical for better estimates and models of oceanic primary productivity. This is especially true for areas where the lack of iron (Fe) limits phytoplankton productivity, such as the Southern Oce ...
2020