A5091359596- Plant and animal studies
- Insect and Pesticide Research
- Remote Sensing and LiDAR Applications
- Ecology and Vegetation Dynamics Studies
- Remote Sensing in Agriculture
- Oil Palm Production and Sustainability
- Land Use and Ecosystem Services
- Plant Parasitism and Resistance
- Insect and Arachnid Ecology and Behavior
- Microfinance and Financial Inclusion
- Cocoa and Sweet Potato Agronomy
- Urban Green Space and Health
- Wildlife-Road Interactions and Conservation
- Invertebrate Taxonomy and Ecology
- Forest ecology and management
- Music and Audio Processing
- Leaf Properties and Growth Measurement
- Fern and Epiphyte Biology
- Music Technology and Sound Studies
- Innovation and Socioeconomic Development
- Agriculture Sustainability and Environmental Impact
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Soil erosion and sediment transport
- Biological Control of Invasive Species
- Forest Management and Policy
University of Göttingen
2016-2024
Hamburg University of Technology
2015
Universität Hamburg
2015
Potsdam Institute for Climate Impact Research
2002
Abstract Terrestrial animal biodiversity is increasingly being lost because of land-use change 1,2 . However, functional and energetic consequences aboveground belowground across trophic levels in megadiverse tropical ecosystems remain largely unknown. To fill this gap, we assessed changes energy fluxes ‘green’ (canopy arthropods birds) ‘brown’ (soil earthworms) food webs rainforests plantations Sumatra, Indonesia. Our results showed that most the channelled to web. Oil palm rubber had...
Urbanization is a major driver of land use change and biodiversity decline. While most the ongoing future urbanization hotspots are located in Global South, impact urban expansion on agricultural associated functions services these regions has widely been neglected. Additionally, studies assess responses at local scale (α-diversity), however, ecosystem functioning strongly determined by compositional functional turnover communities (β-diversity) regional scales. We investigated taxonomic...
Abstract Oil palm is the most productive oil crop, but its high productivity associated with conventional management (that is, fertilization rates and herbicide application), causing deleterious environmental impacts. Using a 2 factorial experiment, we assessed effects of vs reduced (equal to nutrients removed by fruit harvest) mechanical weeding on ecosystem functions, biodiversity profitability. Analysing across multiple exhibited higher multifunctionality than treatment, although this...
The expansion of the oil palm industry in Indonesia has improved livelihoods rural communities, but comes at cost biodiversity and ecosystem degradation. Here, we investigated ways to balance ecological economic outcomes cultivation. We compared a wide range production systems, including smallholder plantations, industrialized company estates, estates with agronomic management, native tree enrichment. Across all management types, assessed multiple indicators biodiversity, functions,...
Many Indonesian forests have been cleared and replaced by fast-growing cash crops (e.g., oil palm rubber plantations), altering the vegetation structure of entire regions. Complex provides habitat niches to a large number native species. Airborne laser scanning (ALS) can provide detailed three-dimensional information on structure. Here, we investigate potential ALS metrics highlight differences across gradient land-use management intensities in Sumatra, Indonesia. We focused tropical...
Abstract Vegetation canopy height is a relevant proxy for aboveground biomass, carbon stock, and biodiversity. Wall‐to‐wall information of with high spatial resolution accuracy not yet available on large scales. For the globally consistent TanDEM‐X data, simplifications are necessary to estimate semi‐empirical models based polarimetric synthetic aperture radar interferometry (PolInSAR). We trained sampled GEDI because assumptions behind application such always valid TanDEM‐X. General linear...
Abstract Expanding cities increasingly encroach fertile farmlands, questioning the viability of maintaining agriculture within and around them. Yet, our knowledge on how urbanization influences pollinator communities provision pollination services to crops is limited, especially for hotspots Global South. Mango Mangifera indica one most important fruit in tropical countries. To analyse dependency mango its main insect pollinators, direct indirect effects insecticides abundance yield, we...
Abstract Context The agricultural landscape in many low- and middle-income countries is characterized by smallholder management systems, often dependent on ecosystem services, such as pollination wild pollinator populations. Increased adoption of modern inputs (e.g., agrochemicals) may threaten pollinators crop production. Objective We aimed to identify the link between use agrochemicals bee populations Southern India, while explicitly considering effects temporal spatial scaling. Methods...
<p>Accurate characterization of land use and cover (LULC) is important in a rapidly changing environment such as the Indonesian tropics. Over past 30 years, native tropical forests have been cleared replaced by fast-growing cash-crops, oil palm rubber plantations. This change dramatically alters vegetation structure entire region. Vegetation structural complexity highly variable forests, provides habitat to large number species. In addition, has an impact on micro-climate...
<ns3:p>Passive acoustic monitoring of wildlife requires sound recording systems. Several cheap, high-performance, or open-source solutions currently exist for soundscapes, but all rely on commercial microphones. Commercial microphones are relatively expensive, specialized particular taxa, and often have incomplete technical specifications. We designed Sonitor, an microphone system to address needs ecologists that sample terrestrial acoustically. evaluated the cost durability our measured...
Abstract Applying a higher order spectral method for potential flow we numerically determine the time evolution of non‐linear deep water wave packets originating from initial conditions derived Peregrine breather solution Schrödinger equation (NLS). The spatio‐temporal qualitatively agrees well with what would be expected lowest weakly nonlinear estimates Some quantitative discrepancies do, however, exist: maximum envelope amplification appears retarded respect to NLS predictions. factor...
&lt;p&gt;Indonesia is one of the hotspots land transformation from forest ecosystems toward oil palm and other cash-crop monocultures. Land-cover changes directly impact below-canopy microclimate, which are critical drivers for many ecological functions, such as greenhouse gas exchange soil microbial activity. However, microclimatic variability below canopies, even within same land-use type can be quite large due to structural heterogeneity, vegetation age or vitality, differences in...