A5075407185- Plant and animal studies
- Botany and Plant Ecology Studies
- Ecology and Vegetation Dynamics Studies
- Insect and Pesticide Research
- Mediterranean and Iberian flora and fauna
- Insect and Arachnid Ecology and Behavior
- Plant Parasitism and Resistance
- Lichen and fungal ecology
- Peatlands and Wetlands Ecology
- Ecology, Conservation, and Geographical Studies
- Forest Ecology and Biodiversity Studies
- Geology and Paleoclimatology Research
- Aeolian processes and effects
- Bryophyte Studies and Records
- Plant and Fungal Species Descriptions
- Rangeland and Wildlife Management
- Plant Diversity and Evolution
- Forest Insect Ecology and Management
- Lepidoptera: Biology and Taxonomy
- Coastal wetland ecosystem dynamics
- Entomological Studies and Ecology
- Tree Root and Stability Studies
- Forest Management and Policy
- Rangeland Management and Livestock Ecology
- Agroforestry and silvopastoral systems
Osnabrück University
1994-2021
University of Freiburg
1988
Abstract Impacts of climate change on individual species are increasingly well documented, but we lack understanding how these effects propagate through ecological communities. Here combine distribution models with network analyses to test potential impacts >700 plant and animal in pollination seed-dispersal networks from central Europe. We discover that interact a low diversity have narrow climatic niches most vulnerable change. In contrast, biotic specialization plants is not related...
Summary 1. The evaluation of restoration measures is an important task conservation biology. Inland sand dunes and dry, oligotrophic grasslands have become rare habitat types in large parts Central Europe their management major importance for the preservation many endangered plant insect species. Within such habitats, it to restore key ecosystem services, as pollination networks. As wild bees are most pollinators ecosystems, they represent a suitable group evaluate measures. Furthermore,...
ABSTRACT Questions How have Nardus grasslands (i.e., unfertilised grassland on acid soils) in Germany changed recent decades? What are the ecological drivers of these changes? Were changes species composition caused by decrease atmospheric deposition nitrogen (N) and sulphur (S) mediated recovery soil pH? Have climate change management contributed to composition? Location Six regions within German low mountain range northern Alps (230 m—2120 m a.s.l.). Methods For a synoptic analysis...
We analysed the interaction web of a plant-bee pollinator community (Hymenoptera: Apidae, honeybees excluded) for two years. Based on ordination incidence matrix, both webs showed coherence and clumping but no species turnover. While this may indicate moderate set nested subsets sub-communities, further analysis nestedness did not reveal uniform results. A null-model different metrics evidence despite asymmetric structure bipartite graphs. However, revealed significant modularization within...
We studied community structures of mainly threatened types sandy dry grassland, and those flower-visiting wild bees, in successional, non-ruderal or ruderal gradients the Upper Rhine Valley (Germany). searched for congruent characteristics floristic/faunistic structure plant bee species, differences between two study years. also asked which vegetation type complex plays most important role as a pollen nectar resource what conclusions can be drawn nature conservation. The complexes range from...
Only one species of the Hymenoptera Apoidea Anthophila is native to Iceland: Bombus jonellus (Kirby, 1802). A second species, Andrena tarsata Nylander, 1848, mentioned by Schmiedeknecht (1882–1884), but there reasonable doubt an existence in Iceland. Four bumblebee were introduced: B. hortorum (Linnaeus, 1761), first detection 1959; lucorum 1979; hypnorum 1758) and pascuorum (Scopoli, 1763), detections 2010. Furthermore terrestris 1761) was introduced for tomato pollination greenhouses...
Extensive alluvial pasture landscapes with high biodiversity were for centuries characteristic of the northwestern German lowland plains, but 50 years nearly all have been replaced by intensive agricultural management systems. As part a rehabilitation project an landscape along River Hase (Ems river basin) was to be redeveloped. The dikes set back and soil sand rearranged, creating wetland-river dune complex low in nutrients. Hardly any plant species present seed bank. Without further...