A5075682033- Soil Carbon and Nitrogen Dynamics
- HIV Research and Treatment
- Plant Water Relations and Carbon Dynamics
- Pasture and Agricultural Systems
- Fire effects on ecosystems
- Cytomegalovirus and herpesvirus research
- Atmospheric and Environmental Gas Dynamics
- Climate change and permafrost
- Diabetes and associated disorders
- Urinary Tract Infections Management
- Climate variability and models
- Biomedical Research and Pathophysiology
- Atmospheric chemistry and aerosols
- Hepatitis C virus research
- Cryospheric studies and observations
- Mathematical and Theoretical Epidemiology and Ecology Models
- Soil and Unsaturated Flow
- Peatlands and Wetlands Ecology
- Parasites and Host Interactions
- Venomous Animal Envenomation and Studies
- Geology and Paleoclimatology Research
- Immune Cell Function and Interaction
- Mathematical Biology Tumor Growth
- Reproductive System and Pregnancy
- Spectroscopy and Laser Applications
Universität Innsbruck
1960-2025
Ludwig Boltzmann Institute for Digital Health and Prevention
1991-1996
Ludwig Boltzmann Institute for Cancer Research
1991-1996
Innsbruck Medical University
1989
Convincing data on experimental vaccines against AIDS have been obtained in the simian immunodeficiency virus (SIV) macaque model by preinfection with a attenuated nef deletion. To investigate efficacy of deletion mutant SIVmac32H called pC8 as live-attenuated vaccine after shorter periods and to learn more about nature immune protection induced, eight rhesus monkeys were infected intravenously virus. All became persistently infected, exhibiting low cell-associated viral loads, but strong...
Soil water sustains terrestrial life, yet its fate is uncertain under a changing climate. We conducted deuterium labeling experiment to determine whether elevated atmospheric carbon dioxide (CO 2 ), warming, and drought impact soil storage transport in temperate grassland. Elevated CO created wetter rootzone compared with ambient conditions, whereas warming decreased moisture. remained well mixed all global change treatments except for summer combined . These caused the grassland conserve...
As the climate warms, drought events are expected to increase in intensity and frequency, with consequences for carbon cycle. Soil respiration (R s ) accounts largest flux of CO 2 from terrestrial ecosystems atmosphere. While responses R have been well studied, it is uncertain how they will be modified a future world, when higher temperatures occur combination elevated atmospheric concentrations. In global change experiment managed temperate grassland, we studied post-drought dynamics under...
Abstract Climate warming has been suggested to impact high latitude grasslands severely, potentially causing considerable carbon (C) losses from soil. Warming can also stimulate nitrogen (N) turnover, but it is largely unclear whether and how altered N availability impacts belowground C dynamics. Even less known about the individual interactive effects of on fate recently photosynthesized in On a 10‐year geothermal gradient Iceland, we studied soil addition CO 2 fluxes through flux...
Climate warming has been suggested to impact high latitude grasslands severely, potentially causing considerable carbon (C) losses from soil. Warming can also stimulate nitrogen (N) turnover, but it is largely unclear whether and how altered N availability impacts belowground C dynamics. Even less known about the individual interactive effects of on fate recently photosynthesized in On a 10-year geothermal gradient Iceland, we studied soil addition CO2 fluxes through flux measurements 13CO2...
The breakdown of the immune system induced by human immunodeficiency virus might be due to active destruction virus-infected helper T lymphocytes expressing viral antigens. By numerical simulation, we have studied possible consequences that a hypothetical (IDV) may on cellular response using mathematical model. In this model, IDV infects CD4+ (helper) cells and is actively synthesized immunologically activated cells. Infected synthesizing express antigenic determinants specific for trigger...
A mathematical analysis is presented for several simple dynamical systems that might be considered as crude descriptions the situation when an immune system retrovirus, cells, and normal autonomously replicating pathogens interact. By stability of steady-state solutions, destabilizing effect retrovirus described. The qualitative behavior solutions depending on parameters analyzed in terms trajectories moving a phase space which axes are defined by population numbers interacting biological entities.
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>Rapid alteration of Earth’s climate amplifies concerns over the future quantity and quality freshwater resources. warming atmosphere is known to store transport more water vapor at higher velocities than historic climatic conditions, augmenting magnitude frequency extreme weather events like intense rainfall droughts. Warming can accelerate evapotranspiration by elevating pressure gradients, whereas atmospheric CO<sub>2...
Flux partitioning, the quantification of photosynthesis and respiration, is a major uncertainty in modelling carbon cycle times when robust models are needed to assess future global changes persistent problem. A promising new approach derive gross primary production (GPP) from measurements carbonyl sulfide (COS) flux, most abundant sulfur-containing trace gas atmosphere, with mean concentration about 500 pptv troposphere. The method based on observation that COS CO2 enter leaf via similar...
<p>Partitioning the measured net ecosystem carbon dioxide (CO<sub>2</sub>) exchange into gross primary productivity (GPP) and respiration remains a challenge, which is usually tackled by disentangling CO<sub>2</sub> using various methods. A relatively new approach uses trace gas carbonyl sulfide (COS) to estimate GPP. This possible because of very similar pathways COS take within leaves, allowing researchers use uptake as...