Concept

Nutrient management

Related publications (92)

Impact of a large tropical reservoir on riverine transport of sediment, carbon, and nutrients to downstream wetlands

Large dams can have major ecological and biogeochemical impacts on downstream ecosystems such as wetlands and riparian habitats. We examined sediment removal and carbon (C), nitrogen (N), and phosphorus (P) cycling in Itezhi-Tezhi Reservoir (ITT; area = 36 ...

Amer Geophysical Union2011

CREB and ChREBP oppositely regulate SIRT1 expression in response to energy availability

Johan Auwerx, Carlos Canto Alvarez, Chikage Mataki, Hiroyasu Yamamoto, Lilia Noriega Lopez, Jiujiu Yu

The nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylase SIRT1 is a major metabolic regulator activated by energy stresses such as fasting or calorie restriction. SIRT1 activation during fasting not only relies on the increase in the NAD(+)/NAD ...

2011

Reuse of domestic wastewater treated in macrophyte ponds to irrigate tomato and eggplant in semi-arid West-Africa: benefits and risks

André Mermoud

The scarcity of freshwater resources is a critical problem in semi-arid zones and marginal quality water is increasingly being used in agriculture. This paper aimed at evaluating the physico-chemical and biological risks on irrigated soils and fruits of ma ...

Elsevier2011

Modelling of biogeochemical transformations in riparian soils: lessons learned from the Thur river revitalization experiment and open questions

David Andrew Barry, Alessandro Brovelli

In recent years, the key environmental importance of natural, healthy riparian ecosystems and soils has been recognized and restoration of degraded lands towards their former natural state has become an area of active research worldwide. Land use changes a ...

2011

Tide-induced surface water and groundwater interactions in coastal wetlands

David Andrew Barry

Intertidal wetlands such as salt marshes are complex hydrological systems characterized by strong, dynamic interactions between coastal surface water and groundwater, driven particularly by tides. We simulated such interactions with a focus on 3D, variably ...

2011

Stochastic modeling of nutrient losses in streams: Interactions of climatic, hydrologic, and biogeochemical controls

Andrea Rinaldo, Gianluca Botter

We present an analytical, stochastic approach for quantifying intra-annual fluctuations of in-stream nutrient losses induced by naturally variable hydrologic conditions. The relevance of the problem we address lies in the growing concern for the major envi ...

American Geophysical Union2010

Biofuel production from microalgae by hydrothermal processing

Christian Ludwig, Rizlan Bernier-Latmani, Frédéric Vogel, Jean-Paul Schwitzguebel, Gabriela Anca Haiduc

Introduction: Microalgae cultures represent an attractive source of biomass for biofuel and chemicals production since they can have higher energy yields per area than conventional biomass crops and can be grown on marginal land using waste, saline, or bra ...

2010

Enhanced biofuel production from microalgae by adding CO2 to stimulate lipid biosynthesis (biodiesel) and by hydrothermal processing (syngas)

Christian Ludwig, Frédéric Vogel, Jean-Paul Schwitzguebel, Gabriela Anca Haiduc, David Pauli

2010

Effect of dung deposition on small-scale patch structure and seasonal vegetation dynamics in mountain pastures

Alexandre Buttler, Charlotte Vandenberghe, François Gillet

Cattle activity greatly influences plant species composition and biomass production of grassland ecosystems. Dung deposition by cattle together with grazing and trampling can be considered as one of the important factors driving vegetation dynamics in past ...

Elsevier2010

Bacterial motility via diffusion adaptation

Ali H. Sayed

Bacteria forage by moving towards nutrient sources in a process known as chemotaxis. The bacteria follow gradient variations by tumbling or moving in straight lines. Both modes of locomotion are affected by Brownian motion. Bacteria are also capable of int ...

IEEE2010

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