A5045600766- Lichen and fungal ecology
- Botany and Plant Ecology Studies
- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Ecology and Vegetation Dynamics Studies
- Bryophyte Studies and Records
- Forest Ecology and Biodiversity Studies
- Mycorrhizal Fungi and Plant Interactions
- Forest ecology and management
- Biocrusts and Microbial Ecology
- Rangeland Management and Livestock Ecology
- Heavy metals in environment
- Geology and Paleoclimatology Research
- Peatlands and Wetlands Ecology
- Soil Carbon and Nitrogen Dynamics
- Cryospheric studies and observations
- Fire effects on ecosystems
- Indigenous Studies and Ecology
- Connective tissue disorders research
- Plant responses to elevated CO2
- Ecology, Conservation, and Geographical Studies
- Climate change and permafrost
- Plant Taxonomy and Phylogenetics
- Climate variability and models
- Celiac Disease Research and Management
University of Freiburg
2018-2025
University of Göttingen
2011-2021
Carl von Ossietzky Universität Oldenburg
2015-2017
Albrecht von Haller Foundation
2010
National University of Mongolia
2009
St Vincent Hospital
2008
University of Debrecen
1981-2001
Institute of Biochemistry
1983
In 2018, Central Europe experienced one of the most severe and long-lasting summer drought heat wave ever recorded. Before 2003 millennial was often invoked as example a "hotter drought", classified event in for last 500 years. First insights now confirm that 2018 climatically more extreme had greater impact on forest ecosystems Austria, Germany Switzerland than drought. Across this region, mean growing season air temperature from April to October 3.3°C above long-term average, 1.2°C warmer...
Abstract Trends in air temperature and precipitation the forest‐steppe ecotone of western Khentey, northern Mongolia were studied related to stem increment shoot water relations Mongolia's most common tree species, Siberian larch ( Larix sibirica ). The area has been subject a significant increase summer decrease during last 47 years. Tree‐ring width series from >400 trees show strongly decreasing annual since 1940s. onset this is independent age and, therefore, can be attributed...
Central and semiarid north-eastern Asia was subject to twentieth century warming far above the global average. Since forests of this region occur at their drought limit, they are particularly vulnerable climate change. We studied regional variations temperature precipitation trends effects on tree growth forest regeneration in Mongolia. Tree-ring series from more than 2,300 trees Siberian larch (Larix sibirica) collected four regions Mongolia's zone were analyzed related available weather...
AimsThe Mongolian Altai is an old settlement area, which populated by pastoral nomads since 2000–3000 years. Forests in this region (at ca. 2300 m a.s.l.) are highly fragmented and border on steppe alpine grasslands, used for mobile livestock husbandry. The climate Central Asia warming to levels clearly above the global average, affects vegetation. Furthermore, transition from planned market economy decollectivization of 20 years ago has strongly changed land use practices Mongolia,...
Temperate forests in Central Europe suffer from climate change-induced productivity and vitality reductions increased tree mortality. Most field work assessing change effects refers to mature trees does not cover interaction between nitrogen deposition. Here we show a study of 54 forest sites representing different combinations climatic conditions atmospheric deposition across Germany that significantly affects the drought tolerance regeneration field. We compared shoot length increment...
Shoot water relations were studied in Siberian larch (Larix sibirica Ledeb.) trees growing at the borderline between taiga and steppe northern Mongolia. Larix is main tree species these forests covering 80% of Mongolia's forested area. Minimum shoot potentials (Psi(m)) close to point zero turgor (Psi(0)) repeatedly recorded throughout season suggest that L. often critical. The Psi(m) varied relation atmospheric vapor pressure deficit, whereas Psi(0) was correlated with monthly precipitation....
Siberian larch (Larix sibirica) has its southern distribution limit in Mongolia an area of rapidly rising temperatures. Direct effects climate on tree-ring formation due to drought stress or indirect via the control insect herbivore populations are little studied. The hypotheses were tested that stem increment is reduced by (1) during growing season and (2) high snow cover, as latter thought protect hibernating herbivores, including gypsy moth (Lymantria dispar). Tree-ring width increases...
Abstract The monitoring of the spatial and temporal dynamics vegetation productivity is important in context carbon sequestration by terrestrial ecosystems from atmosphere. accessibility full archive medium-resolution earth observation data for multiple decades dramatically improved potential remote sensing to support global climate change cycle studies. We investigated a dense time series multi-sensor Landsat Normalized Difference Vegetation Index (NDVI) at southern fringe boreal forests...