1. Increasing landscape heterogeneity by restoring semi-natural elements to reverse farmland biodiversity declines is not always economically feasible or acceptable to farmers due to competition for land. We hypothesized that increasing the heterogeneity of the crop mosaic itself, hereafter referred to as crop heterogeneity, can have beneficial effects on within-field plant diversity. 2. Using a unique multi-country dataset from a cross-continent collaborative project covering 1451 agricultural fields within 432 landscapes in Europe and Canada, we...
Data from: Intraspecific variation in herbivore-induced plant volatiles influences the spatial range of plant-parasitoid interactionsYavanna Aartsma, Benjamin Leroy, Wopke Van Der Werf, Marcel Dicke, Erik H. Poelman, Felix J.J.A. Bianchi & Felix J. J. A. Bianchi
Chemical information influences the behaviour of many animals, thus affecting species interactions. Many animals forage for resources that are heterogeneously distributed in space and time, and have evolved foraging behaviour that utilizes information related to these resources. Herbivore-induced plant volatiles (HIPVs), emitted by plants upon herbivore attack, provide information on herbivory to various animal species, including parasitoids. Little is known about the spatial scale at which plants attract parasitoids via HIPVs under field conditions and...
Data from: Bt rice plants may protect neighbouring non-Bt rice plants against the striped stem borer, Chilo suppressalisYaoyu Jiao, Xiaoyun Hu, Yufa Peng, Kongming Wu, Jörg Romeis & Yunhe Li
The area planted with insect-resistant genetically engineered crops expressing Bacillus thuringiensis (Bt) genes has greatly increased in many areas of the world. Given the nearby presence of non-Bt crops (including those planted as refuges) and non-crop habitats, pests targeted by the Bt trait have a choice between Bt and non-Bt crops or weeds, and their host preference may greatly affect insect management and management of pest resistance to Bt proteins. In this study we examined...
Data from: Multi-decadal time series of remotely sensed vegetation improves prediction of soil carbon in a subtropical grasslandChris H. Wilson, T. Trevor Caughlin, Sami W. Rifai, Elizabeth H. Boughton, Michelle C. Mack & S. Luke Flory
Soil carbon sequestration in agroecosystems could play a key role in climate change mitigation but will require accurate predictions of soil organic carbon (SOC) stocks over spatial scales relevant to land management. Spatial variation in underlying drivers of SOC, such as plant productivity and soil mineralogy, complicates these predictions. Recent advances in the availability of remotely sensed data make it practical to generate multidecadal time series of vegetation indices with high spatial resolution and coverage....
Data from: Plant-pollinator interactions along an urbanization gradient from cities and villages to farmland landscapesKristy Udy, Hannah Reininghaus, Christoph Scherber & Teja Tscharntke
Urbanization affects pollinator diversity and plant-pollinator networks by changing resource availability locally and in the surrounding landscape. We experimentally established (N = 12) standardized plant communities in farmland, villages and cities to identify the relative role of local and landscape effects on plant-pollinator communities along this urbanization gradient. We found that the number of flower visits by solitary bees, but not bumblebees, were highest in cities and lowest in farmland, with villages being intermediate, whereas...
Data from: Comparing the sampling performance of sound recorders versus point counts in bird surveys: a meta-analysisKevin Darras, Péter Batáry, Brett Furnas, Antonio Celis-Murillo, Steven L. Van Wilgenburg, Yeni Ariyati Mulyani & Teja Tscharntke
1) Autonomous sound recording is a promising survey method for birds and other vocalising terrestrial wildlife. However, while there are clear advantages of sound recording methods over classical point counts conducted by humans, it has been difficult to quantitatively assess how they compare in their sampling performance. Quantitative comparisons of bird species richness between acoustic recorders and human point counts have previously been hampered by the differing and often unknown detection ranges among sampling methods....
MTA Centre for Ecological Research2
Ecosystèmes, Biodiversité, Evolution1
Centre d'Ecologie Fonctionnelle et Evolutive1
Centre d'Etudes Biologiques de Chizé1
Institute of Landscape Ecology1
University of Göttingen1
Northern Arizona University1