A5052400703- Atmospheric and Environmental Gas Dynamics
- Plant responses to elevated CO2
- Atmospheric chemistry and aerosols
- Soil Carbon and Nitrogen Dynamics
- Plant Water Relations and Carbon Dynamics
- Fire effects on ecosystems
- Peatlands and Wetlands Ecology
- Climate change and permafrost
- Soybean genetics and cultivation
- Agriculture Sustainability and Environmental Impact
- Plant Ecology and Soil Science
- Greenhouse Technology and Climate Control
- Vehicle emissions and performance
- Isotope Analysis in Ecology
- Soil and Unsaturated Flow
- Rangeland and Wildlife Management
- Tree-ring climate responses
- Cryospheric studies and observations
- Soil and Water Nutrient Dynamics
- Soil erosion and sediment transport
- Ruminant Nutrition and Digestive Physiology
- Forest ecology and management
- Microbial Community Ecology and Physiology
- Crop Yield and Soil Fertility
- Global Energy and Sustainability Research
Universität Innsbruck
2015-2023
Abstract. For the past decade, observations of carbonyl sulfide (OCS or COS) have been investigated as a proxy for carbon uptake by plants. OCS is destroyed enzymes that interact with CO2 during photosynthesis, namely carbonic anhydrase (CA) and RuBisCO, where CA more important one. The majority sources to atmosphere are geographically separated from this large plant sink, whereas sinks co-located in ecosystems. drawdown can therefore be related without added complication emissions...
Abstract Gross primary productivity (GPP), the gross uptake of carbon dioxide (CO 2 ) by plant photosynthesis, is driver land sink, which presently removes around one quarter anthropogenic CO emissions each year. GPP, however, cannot be measured directly and resulting uncertainty undermines our ability to project magnitude future sink. Carbonyl sulfide (COS) has been proposed as an independent proxy for GPP it diffuses into leaves in a fashion very similar , but contrast latter generally not...
Abstract. For the past decade, observations of carbonyl sulfide (OCS or COS) have been investigated as a proxy for carbon uptake by plants. OCS is destroyed enzymes that interact with CO2 during photosynthesis, namely carbonic anhydrase (CA) and RuBisCO, where CA more important. The majority sources to atmosphere are geographically separated from this large plant sink, whereas sinks co-located in ecosystems. drawdown can therefore be related without added complication emissions comparable...
Abstract. Carbonyl sulfide (COS) is an atmospheric trace gas of interest for C cycle research because COS uptake by continental vegetation strongly related to terrestrial gross primary productivity (GPP), the largest and most uncertain flux in CO2 budgets. However, use as additional tracer GPP, accurate quantification exchange soils also needed. At present, budget unbalanced globally, with total estimates from oxic anoxic that vary between −409 −89 GgS yr−1. This uncertainty hampers...
Little is known about the effect of decomposer diversity on litter decomposition in alpine areas. Especially under premise that ecosystems are very sensitive to global change and currently undergoing extensive land-use changes, a better understanding needed predict how environmental will affect decomposition. A mesocosm experiment was conducted compare effects most common functionally diverse invertebrates (earthworms, millipedes sciarid larvae) found soils rates assess affects Experimental...
During recent years, carbonyl sulfide (COS), a trace gas with similar diffusion pathway into leaves as carbon dioxide (CO2), but no known "respiration-like" leaf source, has been discussed promising new approach for partitioning net ecosystem-scale CO2 fluxes photosynthesis and respiration. The utility of COS flux at the ecosystem scale critically depends on understanding non-leaf sources sinks COS. This study assessed contribution soil to under simulated drought conditions temperate...
Time series of stem diameter variations (SDVs) recorded by dendrometers are composed two components: (i) irreversible radial growth and (ii) reversible shrinking swelling caused dynamics in water storage elastic tissues outside the cambium. However, SDVs measured over dead outer bark (periderm) could also be affected absorption evaporation from remaining layers after smoothing surface to properly mount dendrometers. Therefore, focus this study was determine influence hygroscopicity a thin...
Abstract. Gross primary productivity (GPP), the CO2 uptake by means of photosynthesis, cannot be measured directly on ecosystem scale but has to inferred from proxies or models. One newly emerged proxy is trace gas carbonyl sulfide (COS). COS diffuses into plant leaves in a fashion very similar generally not emitted plants. Laboratory studies leaf level exchange have shown promising correlations between relative (LRU) under controlled conditions. However, situ measurements including daily...
Abstract. In order to estimate the gross primary productivity (GPP) of terrestrial ecosystems from canopy uptake carbonyl sulfide (COS), leaf relative rate (LRU) COS with respect carbon dioxide needs be known a priori. Currently, variability LRU between plant species in different biomes world is poorly understood, making choice an appropriate uncertain and hampering further progress towards developing as tracer GPP. Here we propose novel approach for estimating light-saturated based on...
Abstract The potential of carbonyl sulfide (COS) flux measurements as an additional constraint for estimating the gross primary production depends, among other preconditions, on our understanding soil COS exchange and its contribution to overall net ecosystem flux. We conducted chamber COS, with transparent chambers, in three different ecosystems across Europe. situ were followed by laboratory samples collected at study sites. exposed UV radiation investigate role photo‐degradation exchange....
The viability of carbonyl sulfide (COS) measurements for partitioning ecosystem-scale net carbon dioxide (CO2) fluxes into photosynthesis and respiration critically depends on our knowledge non-leaf sinks sources COS in ecosystems. We combined soil gas exchange CO2 with next-generation sequencing technology (NGS) to investigate the role microbiota exchange. applied different treatments (litter glucose addition, enzyme inhibition gamma sterilization) samples from a temperate grassland...
Carbonyl sulfide (COS) has been proposed as a promising tracer for the estimation of gross primary productivity (GPP) from ecosystem to global scale in recent years. Despite substantial work at spatial scales leaf regions, uncertainty COS-based GPP estimates are poorly known compared widely used derived net CO2 exchange. One key this context is relative uptake (LRU) COS with respect GPP, which must be priori. To investigate influence environmental factors, like drought, on variability LRU,...
Abstract. Carbonyl sulfide (COS) is an atmospheric trace gas of interest for C cycle research because COS uptake by continental vegetation strongly related to terrestrial gross primary productivity (GPP), the largest and most uncertain flux in CO2 budgets. However, use budgets as additional tracer GPP, accurate quantification exchange soils also needed. At present, budget unbalanced globally, with total estimates from oxic anoxic that vary between −409 −104 GgS yr−1. This uncertainty hampers...
Abstract Background and aims Partitioning the measured net ecosystem carbon dioxide (CO 2 ) exchange into gross primary productivity (GPP) respiration remains a challenge, which scientists try to tackle by using properties of trace gas carbonyl sulfide (COS). Its similar pathway within leaf makes it potential photosynthesis proxy. The application COS as an effective proxy depends, among other things, on robust inventory sinks sources ecosystems. While soil received some attention during last...
<p>Land ecosystems presently sequester around 25% of the carbon dioxide (CO2) that is emitted into atmosphere by human activity and thus, along with oceans (absorbing a similar fraction), slow down increase atmospheric CO2. Whether land will be able to continue CO2 at rates in future or whether cycle-climate feedbacks cause sink saturate even turn source, topic controversial discussion. While taking up through stomata, plants inevitably lose water transpiration. Terrestrial...
Abstract. In order to estimate the gross primary productivity (GPP) of terrestrial ecosystems from canopy uptake carbonyl sulfide (COS), leaf relative rate (LRU) COS with respect carbon dioxide needs be known a priori. Currently, variability LRU between plant species in different biomes world is poorly understood, making choice an appropriate uncertain and hampering further progress towards developing as alternative tracer GPP. Here we propose novel approach for estimating based on...