Data from: Assessing changes in arthropod predator-prey interactions through DNA-based gut content analysis - variable environment, stable diet ...

• Main Authors: Eitzinger, Bernhard, Abrego, Nerea, Gravel, Dominique, Huotari, Tea, Vesterinen, Eero J., Roslin, Tomas
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: Interaction probability; Diet Analysis; Holocene; Lycosidae; Pardosa glacialis; Arctic
• Online Access: https://dx.doi.org/10.5061/dryad.k6gf1tf; https://datadryad.org/stash/dataset/doi:10.5061/dryad.k6gf1tf

Analyzing the structure and dynamics of biotic interaction networks and the processes shaping them is currently one of the key fields in ecology. In this paper, we develop a novel approach to gut content analysis, thereby deriving a new perspective on community interactions and their responses to environment. For this, we use an elevational gradient in the High Arctic, asking how the environment and species traits interact in shaping predator-prey interactions involving the wolf spider Pardosa glacialis. To characterize the community of potential prey available to this predator, we used pitfall trapping and vacuum sampling. To characterize the prey actually consumed, we applied molecular gut content analysis. Using joint species distribution models, we found elevation and vegetation mass to explain the most variance in the composition of the prey community locally available. However, such environmental variables had only a small effect on the prey community found in the spider’s gut. These patterns indicate ... : A1_matrixAbundance data of prey taxa (family level) collected at the study siteA2_matrixPresence/absence data of prey taxa (family level) collected at the study siteB1_matrixSpider gut content data and predator traits; information of detected prey in individual wolf spiders and individual predator traitsB2_matrixSpider gut content data; information on detected prey in mean number of wolf spiders per plot and dateC_matrixPrey taxa traitsD_matrixEnvironmental dataREADMEThis file explains all variables in the datasets that accompany: Assessing changes in arthropod predator-prey interactions through DNA-based gut content analysis – variable environment, stable diet submitted to Molecular Ecology contact: Bernhard Eitzinger [e-mail] pipeline used for bioinformaticsThe file contains all the commandds used in this study to generate the final data. The bioinformatics was carried out at servers on CSC - IT Center for SCience in Finland .Assessing_changes_pipe_DRYAD.shARC_ZOTUS_SequencesClustered to ...