Birgit Jauker
A5012413483- Plant and animal studies
- Insect and Pesticide Research
- Ecology and Vegetation Dynamics Studies
- Insect and Arachnid Ecology and Behavior
- Plant Parasitism and Resistance
- Species Distribution and Climate Change
- Insect-Plant Interactions and Control
- Botanical Studies and Applications
- Peatlands and Wetlands Ecology
- Advanced Database Systems and Queries
- Invertebrate Taxonomy and Ecology
- Wildlife Ecology and Conservation
- Botany and Plant Ecology Studies
- Insect behavior and control techniques
- Distributed and Parallel Computing Systems
- Horticultural and Viticultural Research
- Computational Physics and Python Applications
- Forest Management and Policy
- Genetic diversity and population structure
- Rangeland and Wildlife Management
- Neural Networks and Applications
- Plant Physiology and Cultivation Studies
- Environmental DNA in Biodiversity Studies
Justus-Liebig-Universität Gießen
2012-2025
Giessen School of Theology
2018
University of Padua
2013
University of Göttingen
2012
ABSTRACT Land use change threatens global biodiversity and compromises ecosystem functions, including pollination food production. Reduced taxonomic α‐diversity is often reported under land change, yet the impacts could be different at larger spatial scales (i.e., γ‐diversity), either due to reduced β‐diversity amplifying diversity loss or increased dampening loss. Additionally, studies focus on diversity, while other important components, phylogenetic can exhibit differential responses....
Abstract Land-use change and intensification threaten bee populations worldwide, imperilling pollination services. Global models are needed to better characterise, project, mitigate bees' responses these human impacts. The available data are, however, geographically taxonomically unrepresentative; most from North America Western Europe, overrepresenting bumblebees raising concerns that model results may not be generalizable other regions taxa. To assess whether the geographic taxonomic...
Landscape‐wide mass‐flowering of oilseed rape (canola Brassica napus ) can considerably affect wild bee communities and pollination success plants. We aimed to assess the impact on plants abundance during after oilseed‐rape bloom, including effects crop–noncrop spillover at landscape adjacent‐field scales. focused two shrub species (hawthorn Crataegus spp., dog rose Rosa canina adjacent herb flowering in forest edges, connected hedges, isolated hedges Lower Saxony, Germany. selected 35...
Summary Human‐dominated landscapes are characterized by a mosaic of natural and managed ecosystems, affecting arthropod communities on different spatial scales. Effective landscape management for functionally important organisms suffers from little understanding organism spillover between semi‐natural habitats adjacent crops, how it is affected the surrounding landscape. We examined syrphid abundance (Diptera: Syrphidae) in three types linear habitats, differing connectedness to annual crops...
Abstract To gain insight into the drivers of pollinator loss, a holistic approach to land-use change including habitat size, isolation, quality and surrounding landscape matrix is necessary. Moreover, species’ responses may differ depending on their life history traits such as dispersal ability, trophic level, or sociality. We assessed species richness wild bees in 32 calcareous grasslands central Germany that connectivity, resource availability context. Declining area and, lesser degree,...
Abstract Considerable uncertainties exist on how increased biofuel cropping affects biodiversity. Regarding oilseed rape, the most common crop in EU , positive responses of flower‐visiting insects to plentiful nectar and pollen seem apparent. However, previous investigations this insect guild revealed conflicting results, potentially because they focused different taxonomic groups representing a narrow range ecological traits considered only short time periods. Here, using trap nests...
ABSTRACT Motivation Pollinators play a crucial role in maintaining Earth's terrestrial biodiversity. However, rapid human‐induced environmental changes are compromising the long‐term persistence of plant‐pollinator interactions. Unfortunately, we lack robust, generalisable data capturing how communities structured across space and time. Here, present EuPPollNet (European Plant‐Pollinator Networks) database, fully open European‐level database containing harmonised taxonomic on interactions...
Abstract The risk of ecosystem function degradation with biodiversity loss has emerged as a major scientific concern in recent years. Possible relationships between taxonomic diversity and magnitude stability processes build upon species' functional characteristics, which determine both susceptibility to environmental change contribution properties. within communities thus provides potential buffer against disturbance, especially for properties emerging from interactions among species. In...
Losses of both habitat area and connectivity have been identified as important drivers species richness declines, but little theoretical empirical work exists that addresses the effect fragmentation on relative commonness highly mobile such pollinating insects. With a large dataset wild bee butterfly abundances collected across Europe, we first tested evenness in pollinator communities using array indexes give different weight to dominance rarity. Second, if traits related mobility diet...
Background and aims – Agricultural intensification loss of farmland heterogeneity have contributed to population declines wild bees other pollinators, which may caused subsequent in insect-pollinated plants. Material methods Using data from 37 studies on 22 pollinator-dependent plant species across Europe, we investigated whether flower visitation seed set plants decline with an increasing proportion arable land within 1 km. Key results Seed increased by bees, most were but not insects....
In complex plant–pollinator networks, distantly related taxa spanning a great trait diversity shape network architecture. We were interested in whether this functional buffers against habitat loss and quantified contributions of wild bees hoverflies to structure 32 calcareous grassland fragments near Göttingen, Germany. Species richness both pollinator declined with loss. The associated 80% interactions resulted small, tightly connected, less specialized networks. Because bee hoverfly...