A5064966760- Ecology and Vegetation Dynamics Studies
- Rangeland Management and Livestock Ecology
- Rangeland and Wildlife Management
- Plant Water Relations and Carbon Dynamics
- Plant and animal studies
- Plant Parasitism and Resistance
- Botany and Plant Ecology Studies
- Soil erosion and sediment transport
- Land Use and Ecosystem Services
- Species Distribution and Climate Change
- Statistical Methods and Inference
- Forest Management and Policy
- Geochemistry and Geologic Mapping
- Remote Sensing in Agriculture
- Rice Cultivation and Yield Improvement
- Pasture and Agricultural Systems
- Soil Carbon and Nitrogen Dynamics
University of Tübingen
2016-2024
Staatliches Museum für Naturkunde Stuttgart
2024
University of Cologne
2012-2019
University of Limpopo
2016-2019
University of Bonn
2013-2014
Abstract Questions In drylands above‐ground net primary production ( ANPP ) and rain‐use efficiency RUE are common ecological indicators for assessing ecosystem state, including degradation supply of key services. However, both have been criticized as ‘lumped’ parameters, since they aggregate complex information. Their value parameters in decision‐making their use modelling therefore challenged explanatory power remains unclear. Furthermore, there is no consensus about the response along...
Abstract Questions Plant communities fulfil key functions in the ecosystem, which can be characterized by their plant functional traits. In ecology, are considered to hold a set of trait attributes reflecting specific strategy adapted persist environment they exposed. semi‐arid grasslands R epublic S outh A frica, we addressed following questions: how community‐aggregated traits ( CPFT ) shaped grazing gradients; strategies associated with response s; and environmental factors, such as soil...
Despite our growing knowledge on plants' functional responses to grazing, there is no consensus if an optimum level of aggregation exists for detecting grazing effects in drylands. With a comparative approach we searched plant types (PFTs) with consistent response across two areas differing climatic aridity, situated South Africa's grassland and savanna biomes. We aggregated herbaceous species into PFTs, using hierarchical combinations traits (from single- three-trait PFTs). Traits relate...
In South African grasslands, rangeland management is strongly related to land tenure. Communal farms are reported exhibit less desirable vegetation conditions for livestock than commercial farms. Time series of high spatial and temporal resolution imagery may be useful improved evaluation these rangelands as they provide information at a scale similar the typical field assessments thus overcome limited spatio-temporal representativeness measurements. A time 13 RapidEye images over one...
In rangelands, grazing management is a main driver of rangeland condition. Due to masking effects seasonal climate fluctuations, little known about (dis)similarity on condition and forage provision across major dryland biomes. Taking macro-ecological perspective, we analysed if differed between South Africa's central grassland Kalahari savanna We recorded proxies (phytomass, vegetation cover their ratio) over five seasons, annual rainfall account for (through relative abundances increaser...
In rangelands, grazing management is a main driver of rangeland condition. Due to masking effects seasonal climate fluctuations, little known about (dis)similarity on condition and forage provision across major dryland biomes. Taking macro-ecological perspective, we analysed if differed between South Africa’s central grassland Kalahari savanna We recorded proxies (phytomass, vegetation cover their ratio) over five seasons, annual rainfall account for (through relative abundances increaser...