A5053128729- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Insect and Pesticide Research
- Insect and Arachnid Ecology and Behavior
- Plant Parasitism and Resistance
- Species Distribution and Climate Change
- Insect-Plant Interactions and Control
- Cocoa and Sweet Potato Agronomy
- Land Use and Ecosystem Services
- Conservation, Biodiversity, and Resource Management
- Animal Ecology and Behavior Studies
- Forest Ecology and Biodiversity Studies
- Forest Insect Ecology and Management
- Weed Control and Herbicide Applications
- Forest Management and Policy
- Bee Products Chemical Analysis
- Mycorrhizal Fungi and Plant Interactions
- Animal Behavior and Reproduction
- Remote Sensing in Agriculture
- Plant responses to elevated CO2
- Wildlife Ecology and Conservation
- Ecology and Conservation Studies
- Agronomic Practices and Intercropping Systems
- Food Chemistry and Fat Analysis
- Environmental DNA in Biodiversity Studies
University of Würzburg
2016-2025
Bavarian Forest National Park
2023
Universitätsklinikum Würzburg
2021
University of Padua
2013
University of Bayreuth
2007-2011
University of Göttingen
2001-2010
IPB University
2008
Génétique Quantitative et Évolution Le Moulon
2008
Abstract Understanding the negative and positive effects of agricultural land use for conservation biodiversity, its relation to ecosystem services, needs a landscape perspective. Agriculture can contribute high‐diversity systems, which may provide important services such as pollination biological control via complementarity sampling effects. Land‐use management is often focused on few species local processes, but in dynamic, landscapes, only diversity insurance guarantee resilience (the...
The diversity and abundance of wild insect pollinators have declined in many agricultural landscapes. Whether such declines reduce crop yields, or are mitigated by managed as honey bees, is unclear. We found universally positive associations fruit set with flower visitation insects 41 systems worldwide. In contrast, increased significantly bees only 14% the surveyed. Overall, pollinated crops more effectively; an increase enhanced twice much equivalent bee visitation. Visitation promoted...
Most ecological processes and interactions depend on scales much larger than a single habitat, therefore it is important to link spatial patterns at landscape scale. Here, we analyzed the effects of context distribution bees (Hymenoptera: Apoidea) multiple with respect following hypotheses: (1) Local abundance diversity increase increasing proportion surrounding seminatural habitats. (2) Solitary wild bees, bumble honey respond different scales. We selected 15 sectors determined percentage...
Agri-environment schemes are an increasingly important tool for the maintenance and restoration of farmland biodiversity in Europe but their ecological effects poorly known. Scheme design is partly based on non-ecological considerations poses restrictions evaluation studies. We describe a robust approach to evaluate agri-environment use it five European countries. compared species density vascular plants, birds, bees, grasshoppers crickets, spiders 202 paired fields, one with scheme, other...
Sustainable agricultural landscapes by definition provide high magnitude and stability of ecosystem services, biodiversity, crop productivity.However, few studies have considered landscape effects on the services.We tested whether isolation from florally diverse natural semi-natural areas reduces spatial temporal flower-visitor richness pollination services in fields.We synthesized data 29 with contrasting biomes, species, pollinator communities.Stability richness, visitation rate (all...
Abstract There is compelling evidence that more diverse ecosystems deliver greater benefits to people, and these ecosystem services have become a key argument for biodiversity conservation. However, it unclear how much needed in cost-effective way. Here we show that, while the contribution of wild bees crop production significant, service delivery restricted limited subset all known bee species. Across crops, years biogeographical regions, crop-visiting communities are dominated by small...
The worldwide decline of pollinators may negatively affect the fruit set wild and cultivated plants. Here, we show that self-fertilizing highland coffee (Coffea arabica) is highly variable related to bee pollination. In a comparison 24 agroforestry systems in Indonesia, could be predicted by number flower-visiting species, it ranged from ca. 60% (three species) 90% (20 species). Diversity, not abundance, explained variation set, so collective role species-rich community was important for...
Intensification or abandonment of agricultural land use has led to a severe decline semi-natural habitats across Europe. This can cause immediate loss species but also time-delayed extinctions, known as the extinction debt. In pan-European study 147 fragmented grassland remnants, we found differences in debt from different trophic levels. Present-day richness long-lived vascular plant specialists was better explained by past than current landscape patterns, indicating an contrast,...
Bee pollinators are currently recorded with many different sampling methods. However, the relative performances of these methods have not been systematically evaluated and compared. In response to strong need record ongoing shifts in pollinator diversity abundance, global regional initiatives must adopt standardized protocols when developing large‐scale long‐term monitoring schemes. We performance six (observation plots, pan traps, variable transect walks, trap nests reed internodes or paper...
Niche complementarity is a commonly invoked mechanism underlying the positive relationship between biodiversity and ecosystem functioning, but little empirical evidence exists for among pollinator species. This study related differences in three functional traits of pollinating bees (flower height preference, daily time flower visitation within-flower behaviour) to seed set obligate cross-pollinated pumpkin Cucurbita moschata Duch. ex Poir. across land-use intensity gradient from tropical...
Abstract To counteract the decline of pollinators in Europe, conservation strategies traditionally focus on enhancing local availability semi‐natural habitats, as supported by European Union's Common Agriculture Policy. In contrast, we show that densities bumblebees, an important pollinator group agroecosystems, were not determined proportion habitats agricultural landscapes. Instead, bumblebee positively related to highly rewarding mass flowering crops (i.e. oilseed rape) landscape....
Drastic biodiversity declines have raised concerns about the deterioration of ecosystem functions and motivated much recent research on relationship between species diversity functioning. A functional trait framework has been proposed to improve mechanistic understanding this relationship, but rarely tested for organisms other than plants. We analysed eight datasets, including five animal groups, examine how well a trait-based approach, compared with more traditional taxonomic predicts seven...
Biodiversity loss can affect the viability of ecosystems by decreasing ability communities to respond environmental change and disturbances. Agricultural intensification is a major driver biodiversity has multiple components operating at different spatial scales: from in-field management intensity landscape-scale simplification. Here we show that landscape-level effects dominate functional community composition even buffer on homogenization, animal in real-world managed landscapes unified...
Local community structure and interactions have been shown to depend partly on landscape context. In this paper we tested the hypothesis that spatial scale experienced by an organism depends its trophic level. We analyzed plant‐herbivore herbivore‐parasitoid in 15 agricultural landscapes differing structural complexity using rape pollen beetle ( Meligethes aeneus ), important pest oilseed Brassica napus parasitoids. very center of each a patch potted plants was placed grassy field margin...
Losses of biodiversity and ecosystem functioning due to rainforest destruction agricultural intensification are prime concerns for science society alike. Potentially, ecosystems show nonlinear responses land-use that would open management options with limited ecological losses but satisfying economic gains. However, multidisciplinary studies quantify socioeconomic tradeoffs under different rare. Here, we evaluate opposing land use strategies in cacao agroforestry Sulawesi, Indonesia, by...
Abstract Managing agricultural landscapes to support biodiversity and ecosystem services is a key aim of sustainable agriculture. However, how the spatial arrangement crop fields other habitats in impacts arthropods their functions poorly known. Synthesising data from 49 studies (1515 landscapes) across Europe, we examined effects landscape composition (% habitats) configuration (edge density) on margins, pest control, pollination yields. Configuration interacted with proportions non‐crop...
Summary Agri‐environment schemes promote organic farming in an attempt to reduce the negative effects of agricultural intensification on farmland biodiversity and ecosystem services such as pollination. Farming system, landscape context regional differences may all influence biodiversity, but their relative impact possible interactions have been little explored. The study was performed three regions (150 km apart, 400–500 2 per region) differing land use intensity. Within each region, seven...