Concept

Pompe biologique

Publications associées (200)

Microbial degradation of terrigenous dissolved organic matter and potential consequences for carbon cycling in brown-water streams

Streams receive substantial terrestrial deliveries of dissolved organic matter (DOM). The chromophoric (CDOM) fraction of terrestrial deliveries confers the brown colour to streamwater, often understood as browning, and plays a central role in aquatic phot ...

2014

Asymmetry in Size-Segregation Rates.

Christophe Ancey, Gaël Epely Chauvin, Kasper van der Vaart

We show experimentally and by comparison with theory that during particle size-segregation in a sheared granular flow large particles rise slower in regions of many small particles and small particles sink faster in regions of many large particles. Binary ...

2014

Long-term organic carbon turnover rates in natural and semi-natural topsoils

Robert Thomas Edmund Mills

We combined published and new radiocarbon and ancillary data for uncultivated topsoils (typically 15 cm depth), to make two databases, one for the United Kingdom (133 sites), and one global (114 sites). Forest topsoils are significantly higher in radiocarb ...

Springer2014

Human convection flow in spaces with and without ventilation: personal exposure to floor-released particles and cough-released droplets

Dusan Licina

The effects of the human convective boundary layer (CBL), room airflow patterns, and their velocities on personal exposure are examined. Two pollutants are studied which simulate particles released from the feet and generated at distances of 2 and 3 m by a ...

2014

Do peatlands hibernate?

Alexandre Buttler, Vincent Eric Jules Jassey, Constant Signarbieux, Robert Thomas Edmund Mills

Winter seasonality with low amounts of incoming radiation, frost and snow cover characterize large areas at mid- and high latitudes, especially in the arctic and in mountain ranges. Because of these adverse conditions, it is often assumed that ecosystem pr ...

2014

Ecomorphodynamic conditions for the emergence of river anabranching patterns

Paolo Perona, Benoît Crouzy, Paolo d'Odorico

The appearance of the regular vegetated ridge patterns observed in some ephemeral rivers of semi-arid regions (Nanson, Tooth, & Knigthon 2002) has previously been explained by hydraulic arguments (optimization of the bed load transport capacity, see Huang ...

Crc Press-Taylor & Francis Group2014

No evidence of aquatic priming effects in hyporheic zone microcosms

Tom Ian Battin

The priming effect refers to quantitative changes in microbial decomposition of recalcitrant organic matter upon addition of labile organic matter and is a phenomenon that mainly has been reported and debated in soil science. Recently, priming effects have ...

2014

Indirect effects of experimental warming on dissolved organic carbon content in subsurface peat

Alexandre Buttler, Luca Bragazza, Vincent Eric Jules Jassey

The peatland carbon store is threatened by climate change and is expected to provide positive feedback on air temperature. Most studies indicate that enhanced temperature and microbial activities result in a rise of dissolved organic carbon (DOC) as a cons ...

Springer Heidelberg2014

Feasibility Of Labile Zn Phytoextraction Using Enhanced Tobacco And Sunflower: Results Of Five- And One-Year Field-Scale Experiments In Switzerland

Jean-Paul Schwitzguebel, Charlotte Pfistner, Erika Nehnevajova

Phytoextraction with somaclonal variants of tobacco and sunflower mutant lines (non-GMs) with enhanced metal uptake and tolerance can be a sustainable alternative to conventional destructive decontamination methods, especially for stripping bioavailable zi ...

Taylor & Francis Inc2014

Optimization of operation conditions for the startup of aerobic granular sludge reactors biologically removing carbon, nitrogen, and phosphorous

Christof Holliger, Samuel Lochmatter

The transformation of conventional flocculent sludge to aerobic granular sludge (AGS) biologically removing carbon, nitrogen and phosphorus (COD, N, P) is still a main challenge in startup of AGS sequencing batch reactors (AGS-SBRs). On the one hand a rapi ...

Elsevier2014

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