A5039254107- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
- Precipitation Measurement and Analysis
- Species Distribution and Climate Change
- Remote Sensing in Agriculture
- Climate variability and models
- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Remote Sensing and LiDAR Applications
- Land Use and Ecosystem Services
- Wildlife Ecology and Conservation
- Bat Biology and Ecology Studies
- Cryospheric studies and observations
- Rangeland Management and Livestock Ecology
- Atmospheric and Environmental Gas Dynamics
- Plant and animal studies
- Conservation, Biodiversity, and Resource Management
- Atmospheric chemistry and aerosols
- Landslides and related hazards
- Hydrology and Watershed Management Studies
- Urban Heat Island Mitigation
- Animal Vocal Communication and Behavior
- Satellite Image Processing and Photogrammetry
- Soil Geostatistics and Mapping
- Groundwater and Isotope Geochemistry
Philipps University of Marburg
2015-2024
Phillips University
2021
University of Münster
2019
Senckenberg Biodiversity and Climate Research Centre
2019
Senckenberg Society for Nature Research
2019
Justus-Liebig-Universität Gießen
2019
Technical University of Darmstadt
2019
Tanzania National Parks
2014
University of Bayreuth
2009-2011
The factors determining gradients of biodiversity are a fundamental yet unresolved topic in ecology. While diversity have been analysed for numerous single taxa, progress towards general explanatory models has hampered by limitations the phylogenetic coverage past studies. By parallel sampling 25 major plant and animal taxa along 3.7 km elevational gradient on Mt. Kilimanjaro, we quantify cross-taxon consensus evaluate predictors from to multi-taxa community level. show complex distribution...
Trade-offs and synergies in the supply of forest ecosystem services are common but drivers these relationships poorly understood. To guide management that seeks to promote multiple services, we investigated between 12 stand-level attributes, including structure, composition, heterogeneity plant diversity, plus 4 environmental factors, proxies for 14 150 temperate plots. Our results show attributes best predictors most also good several trade-offs services. Environmental factors play an...
Spatially high resolution climate information is required for a variety of applications in but not limited to functional biodiversity research. In order scale the generally plot-based research findings landscape level, spatial interpolation methods meteorological variables are required. Based on network temperature observation plots across southern slopes Mt. Kilimanjaro, skill 14 machine learning algorithms predicting patterns tested and evaluated against heavily utilized kriging approach....
The present study aims to investigate the potential of random forests ensemble classification and regression technique improve rainfall rate assignment during day, night twilight (resulting in 24-hour precipitation estimates) based on cloud physical properties retrieved from Meteosat Second Generation (MSG) Spinning Enhanced Visible InfraRed Imager (SEVIRI) data. Random (RF) models contain a combination characteristics that make them well suited for its application remote sensing. One key...
Spatial predictions of near-surface air temperature ( T a i r ) in Antarctica are required as baseline information for variety research disciplines. Since the network weather stations is sparse, remote sensing methods have large potential due to their capabilities and accessibility. Based on MODIS land surface (LST) data, at exact time satellite overpass was modelled spatial resolution 1 km using data from 32 stations. The performance simple linear regression model predict LST compared three...
Studies of early human settlement in alpine environments provide insights into physiological, genetic, and cultural adaptation potentials. Although Late even Middle Pleistocene presence has been recently documented on the Tibetan Plateau, little is known regarding nature context persistent high elevations. Here, we report earliest evidence a prehistoric high-altitude residential site. Located Africa's largest ecosystem, repeated occupation Fincha Habera rock shelter dated to 47 31 thousand...
Abstract A new rainfall retrieval technique for determining rates in a continuous manner (day, twilight, and night) resulting 24-h estimation applicable to midlatitudes is presented. The approach based on satellite-derived information cloud-top height, temperature, cloud phase, water path retrieved from Meteosat Second Generation (MSG) Spinning Enhanced Visible Infrared Imager (SEVIRI) data uses the random forests (RF) machine-learning algorithm. realized three steps: (i) precipitating areas...
Abstract Aim Understanding the mechanisms controlling variation in species richness along environmental gradients is one of most important objectives ecology. Resource availability often considered as major driver animal diversity. However, ectotherms, temperature might play a predominant role it modulates metabolic rates and access animals to resources. Here, we investigate relative importance resource determining diversity pattern bees 3.6‐km elevational gradient. Location M ount K...
Species' functional traits set the blueprint for pair-wise interactions in ecological networks. Yet, it is unknown to what extent diversity of plant and animal communities controls network assembly along environmental gradients real-world ecosystems. Here we address this question with a unique dataset mutualistic bird-fruit, bird-flower insect-flower interaction networks associated 200 282 species sampled broad climate land-use on Mt. Kilimanjaro. We show that mainly limited by...
Abstract Recent progress in remote sensing provides much-needed, large-scale spatio-temporal information on habitat structures important for biodiversity conservation. Here we examine the potential of a newly launched satellite-borne radar system (Sentinel-1) to map twelve taxa across five temperate forest regions central Europe. We show that sensitivity structure is similar airborne laser scanning (ALS), current gold standard measurement structure. Our models different facets reveal...
ABSTRACT This study introduces the set‐up of a new meteorological station network on southern slopes Kilimanjaro, Tanzania, since 2010 and presents recorded characteristics air temperature, humidity precipitation in both plot‐based area‐wide perspectives. The follows hierarchical approach covering an elevational as well land‐use disturbance gradient. It consists 52 basic stations measuring ambient temperature above‐ground 11 measurement sites, with recording intervals 5 min. With respect to...
A new day and night technique for precipitation process separation rainfall intensity differentiation using the Meteosat Second Generation Spinning Enhanced Visible Infrared Imager is proposed. It relies on conceptual design that convective clouds with higher intensities are characterized by a larger vertical extension cloud top. For advective‐stratiform areas, it assumed areas water path (CWP) more ice particles in upper parts intensities. First, rain area separated into of processes. Next,...
Summary: Cedrela montana is a deciduous broad-leaved tree species growing in the humid mountain rainforests of southern Ecuador. High-resolution dendrometer data indicate regular seasonal growth rhythm with cambial activity during January to April. Amplitudes daily radial stem diameter variations are correlated amount maximum vapour pressure deficit. During periods, considerably smaller than drier periods. This indicates that limited by available moisture even such very climate. Wood...
Abstract Background Forests perform various important ecosystem functions that contribute to services. In many parts of the world, forest management has shifted from a focus on timber production multi-purpose forestry, combining with supply other However, it is unclear which types provide services and what extent forests primarily managed for already multiple Based comprehensive dataset collected across 150 plots in three regions differing intensity species composition, we develop models...