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Technical note: High accuracy weighing micro-lysimeter system for long-term measurements of non-rainfall water inputs to grasslands
(2021)Hydrology and Earth System Sciences DiscussionsNon-rainfall water (NRW), defined here as dew, hoar frost, fog, rime and water vapor adsorption, might be a relevant water source for ecosystems, especially during summer drought periods. These water inputs are often not considered in ecohydrological studies, because water amounts of NRW events are rather small and therefore difficult to measure. Here we present a novel micro-lysimeter (ML) system and its application which allows to ...Working Paper -
The role of dew and radiation fog inputs in the local water cycling of a temperate grassland in Central Europe
(2020)Hydrology and Earth System Sciences DiscussionsIn a warmer climate, non-rainfall water (hereafter NRW) formed from dew and fog potentially plays an increasingly important role in temperate grassland ecosystems under the scarcity of precipitation over prolonged periods. Dew and radiation fog occur in combination during clear and calm nights, and both use ambient water vapor as a source. Research on the combined mechanisms involved in NRW inputs to ecosystems are rare, and the condensation ...Working Paper -
Cereal-legume mixtures increase net CO2 uptake in a forage system of the Eastern Pyrenees
(2020)Biogeosciences DiscussionsForage systems are the major land use, and provide essential resources for animal feeding. Assessing the influence of forage species on net ecosystem CO2 exchange (NEE) is key to develop management strategies that can help to mitigate climate change, while optimizing productivity of these systems. However, little is known about the effect of forage species on CO2 exchange fluxes and net biome production (NBP), considering: species ...Working Paper -
Memory effects on greenhouse gas emissions (CO2, N2O and CH4) following grassland restoration?
(2020)Biogeosciences DiscussionsA five-year greenhouse gas (GHG) exchange study of the three major gas species (CO2, CH4 and N2O) from an intensively managed permanent grassland in Switzerland is presented. Measurements comprise two years (2010/2011) of manual static chamber measurements of CH4 and N2O, five years of continuous eddy covariance (EC) measurements (CO2/H2O – 2010–2014) and three years (2012–2014) of EC measurement of CH4 and N2O. Intensive grassland ...Working Paper -
Carbon/nitrogen interactions in European forests and semi-natural vegetation. Part I: Fluxes and budgets of carbon, nitrogen and greenhouse gases from ecosystem monitoring and modelling
(2019)Biogeosciences DiscussionsWorking Paper -
Carbon/nitrogen interactions in European forests and semi-natural vegetation. Part II: Untangling climatic, edaphic, management and nitrogen deposition effects on carbon sequestration potentials
(2019)Biogeosciences DiscussionsWorking Paper -
Integrated management of Swiss cropland is not sufficient to preserve its soil carbon pool in the long-term
(2018)Biogeosciences DiscussionsCroplands are involved in the exchange of carbon dioxide (CO2) between the atmosphere and the biosphere. Furthermore, soil carbon (C) stocks play an important role in soil fertility. It is thus of great interest to know whether intensively managed croplands act as a net source or sink of atmospheric CO2 and if soil C stocks are preserved over long timescales. The FluxNet site CH-Oe2 in Oensingen, Switzerland, has been operational since ...Working Paper -
Management matters; testing a mitigation strategy for nitrous oxide emissions using legumes on intensively managed grassland
(2018)Biogeosciences DiscussionsWorking Paper -
Quality control of CarboEurope flux data - Part I: Footprint analyses to evaluate sites in forest ecosystems
(2007)Biogeosciences DiscussionsWe applied a site evaluation approach combining Lagrangian Stochastic footprint modelling with a quality assessment approach for eddy-covariance data to 25 forested sites of the CarboEurope-IP network. The analysis addresses the spatial representativeness of the flux measurements, instrumental effects on data quality, spatial patterns in the data quality, and the performance of the coordinate rotation method. Our findings demonstrate that ...Working Paper