Tim Diekötter
A5027301794- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Plant Parasitism and Resistance
- Insect and Pesticide Research
- Insect and Arachnid Ecology and Behavior
- Insect-Plant Interactions and Control
- Forest Ecology and Biodiversity Studies
- Wildlife Ecology and Conservation
- Animal and Plant Science Education
- Orthoptera Research and Taxonomy
- Land Use and Ecosystem Services
- Weed Control and Herbicide Applications
- Botany and Plant Ecology Studies
- Genetic diversity and population structure
- Agronomic Practices and Intercropping Systems
- Allelopathy and phytotoxic interactions
- Forest Management and Policy
- Economic and Environmental Valuation
- Soil Carbon and Nitrogen Dynamics
- Environmental Conservation and Management
- Biological Control of Invasive Species
- Rangeland and Wildlife Management
- Animal Vocal Communication and Behavior
- Bat Biology and Ecology Studies
Kiel University
2016-2025
Leibniz University Hannover
2023
Justus-Liebig-Universität Gießen
2010-2021
ETH Zurich
2005-2016
Miami University
2007-2013
Giessen School of Theology
2007
École Polytechnique Fédérale de Lausanne
2006
Helmholtz Centre for Environmental Research
2005-2006
Ghent University
2006
Technische Universität Berlin
2006
Summary In many European agricultural landscapes, species richness is declining considerably. Studies performed at a very large spatial scale are helpful in understanding the reasons for this decline and as basis guiding policy. unique, large‐scale study of 25 landscapes seven countries, we investigated relationships between several taxa, links biodiversity landscape structure management. We estimated total vascular plants, birds five arthropod groups each 16‐km 2 landscape, recorded various...
Summary Agricultural intensification poses a serious threat to biodiversity as consequence of increased land‐use intensity, decreased landscape heterogeneity and reduced habitat diversity. Although there is interest in the preservation total species richness an agricultural (γ diversity), effects have been assessed primarily by at local scale (α diversity). This ignores between communities (β which important component richness. In this study, measures structure diversity were related γ, α β...
Significance Decades of research have fostered the now-prevalent assumption that noncrop habitat facilitates better pest suppression by providing shelter and food resources to predators parasitoids crop pests. Based on our analysis largest pest-control database its kind, surrounding farm fields does affect multiple dimensions control, but actual responses pests enemies are highly variable across geographies cropping systems. Because often not enhance biological more information about local...
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 In landscapes influenced by anthropogenic activities, such as intensive agriculture, knowledge of the relative importance and interaction environmental factors on composition function local communities across a range spatial scales is important for maintaining biodiversity. We analysed five arthropod taxa covering broad functional aspects (wild bees, true bugs, carabid beetles, hoverflies spiders) in 24 (4 × 4 km) seven European countries along gradients both land‐use intensity...
Significance Land-use intensification is a major threat to biodiversity. So far, however, studies on biodiversity impacts of land-use intensity (LUI) have been limited single or few groups organisms and not considered temporal variation in LUI. Therefore, we examined total ecosystem grasslands varying LUI with newly developed index called multidiversity, which integrates the species richness 49 different organism ranging from bacteria birds. Multidiversity declined strongly increasing LUI,...
Biodiversity continues to decline in the face of increasing anthropogenic pressures such as habitat destruction, exploitation, pollution and introduction alien species. Existing global databases species' threat status or population time series are dominated by charismatic The collation datasets with broad taxonomic biogeographic extents, that support computation a range biodiversity indicators, is necessary enable better understanding historical declines project - avert future declines. We...
Very few principles have been unraveled that explain the relationship between soil properties and biota across large spatial scales different land-use types. Here, we seek these general relationships using data from 52 differently managed grassland forest soils in three study regions spanning a latitudinal gradient Germany. We hypothesize that, after extraction of variation is explained by location type, still significant proportions abundance diversity biota. If predictors organisms were...
Species diversity promotes the delivery of multiple ecosystem functions (multifunctionality). However, relative functional importance rare and common species in driving biodiversity–multifunctionality relationship remains unknown. We studied between (according to their local abundances across nine different trophic groups), multifunctionality indices derived from 14 on 150 grasslands a land-use intensity (LUI) gradient. The above- below-ground had opposite effects, with above-ground being...
Citizen science is becoming increasingly popular as a format in environmental and sustainability education. not only allows researchers to gather large amounts of biodiversity-related data, it also has the potential engage public biodiversity research. Numerous citizen projects have emerged that assume participation project affects participants’ knowledge, attitudes, behavior. We investigated what evidence really exists about outcomes on side individual participants. For this purpose, we...
Summary 1. New incentives at the national and international level frequently lead to substantial structural changes in agricultural landscapes. Subsidizing energy crops, for example, recently fostered a strong increase area cultivated with oilseed rape Brassica napus across EU. These landscape structure affect biodiversity associated ecosystem services. 2. Mass‐flowering has been shown positively colony growth densities of bumblebees, which may enhance pollination services agroecosystems....
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...
Abstract Agricultural intensification is considered to be a major driver of terrestrial biodiversity decline. Resulting loss, isolation and degradation flower‐rich habitats are threatening pollinators. Agri‐environmental schemes ( AES ) aim counteract these negative effects, including measures enhance floral resources in agricultural landscapes. The impact plant species composition on their efficiency mitigate pollinator however, largely unexplored. We tested four recommended seed mixtures...
Abstract Citizen science (CS) is regarded as a promising format in environmental and sustainability education well education. CS projects often assume that participation the project influences, for example, participants' knowledge or behaviour. We investigated whether to what extent biodiversity citizen (BDCS) projects, from self‐reported perspective, achieve following six participant outcomes: (a) content, process nature of knowledge, (b) skills inquiry, (c) self‐efficacy environment, (d)...
Bees are the most important group of insect pollinators, but their populations declining. To gain a better understanding wild bee responses to different stressors (e.g. land-use change) and conservation measures, regional national monitoring schemes currently being established in Germany, which is used here as model region, many other countries. We offer perspectives on how best design future programs with focus evaluating implementation measures. discuss traditional novel sampling methods,...
Environmental change is not likely to act on biodiversity in a random manner, but rather according species traits that affect assembly processes, thus, having potentially serious consequences ecological functions. We investigated the effects of anthropogenic land use functional richness local hoverfly communities 24 agricultural landscapes across temperate Europe. A multivariate ordination separated seven groups based resource use, niche characteristics and response type. Intensive reduced...
ABSTRACT Aim To determine whether the effect of habitat fragmentation and heterogeneity on species richness at different spatial scales depends dispersal ability assemblages if this results in nested assemblages. Location Agricultural landscapes distributed over seven temperate Europe countries covering a range from France to Estonia. Methods We sampled 16 local communities each 24 agricultural (16 km 2 ) that differ amount semi‐natural patches. Carabid beetles were used as model organisms...