nam 22 uu 4500 dbt_mods_00049601 10.1111/ddi.13274 doi dbt_mods_00049601 ger DE-601 rda eng 500 sdnb 570 sdnb Bowler, Diana E. Author aut German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Friedrich Schiller University Jena Helmholtz‐Center for Environmental Research – UFZ Winners and losers over 35 years of dragonfly and damselfly distributional change in Germany Bowler, Diana E.;Eichenberg, David;Conze, Klaus‐Jürgen;Suhling, Frank;Baumann, Kathrin;Benken, Theodor;Bönsel, André;Bittner, Torsten;Drews, Arne;Günther, André;Isaac, Nick J.B.;Petzold, Falk;Seyring, Marcel;Spengler, Torsten;Trockur, Bernd;Willigalla, Christoph;Bruelheide, Helge;Jansen, Florian;Bonn, Aletta;Franzén, Markus 2021-07-27 14 Seiten text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Zweitveröffentlichung Abstract Aim Recent studies suggest insect declines in parts of Europe; however, the generality of these trends across different taxa and regions remains unclear. Standardized data are not available to assess large‐scale, long‐term changes for most insect groups but opportunistic citizen science data are widespread for some. Here, we took advantage of citizen science data to investigate distributional changes of Odonata. Location Germany. Methods We compiled over 1 million occurrence records from different regional databases. We used occupancy‐detection models to account for imperfect detection and estimate annual distributions for each species during 1980–2016 within 5 × 5 km quadrants. We also compiled data on species attributes that were hypothesized to affect species’ sensitivity to different drivers and related them to the changes in species’ distributions. We further developed a novel approach to cluster groups of species with similar patterns of distributional change to represent multispecies indicators. Results More species increased (45%) than decreased (29%) or remained stable (26%) in their distribution (i.e. number of occupied quadrants). Species showing increases were generally warm‐adapted species and/or running water species, while species showing decreases were cold‐adapted species using standing water habitats such as bogs. Time series clustering defined five main patterns of change—each associated with a specific combination of species attributes, and confirming the key roles of species’ temperature and habitat preferences. Overall, our analysis predicted that mean quadrant‐level species richness has increased over most of the time period. Main conclusions Trends in Odonata provide mixed news—improved water quality, coupled with positive impacts of climate change, could explain the positive trends of many species. At the same time, declining species point to conservation challenges associated with habitat loss and degradation. Our study demonstrates the great value of citizen science and the work of natural history societies for assessing large‐scale distributional change. biodiversity monitoring citizen science long‐term change occupancy‐detection models range‐shifting trait‐based article Eichenberg, David Author aut German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Conze, Klaus‐Jürgen Author aut GdO (Gesellschaft deutschsprachiger Odonatologen) & Arbeitskreis Libellen NRW Suhling, Frank Author aut Technische Universität Braunschweig Baumann, Kathrin Author aut Arbeitsgemeinschaft Libellen in Niedersachsen und Bremen Benken, Theodor Author aut Schutzgemeinschaft Libellen in Baden‐Württemberg e.V Bönsel, André Author aut Planung für alternative Umwelt GmbH Bittner, Torsten Author aut Landesanstalt für Umwelt Baden‐Württemberg Drews, Arne Author aut Umwelt und ländliche Räume Schleswig‐Holstein Günther, André Author aut Naturschutzinstitut Freiberg Isaac, Nick J.B. Author aut UK Centre for Ecology & Hydrology Petzold, Falk Author aut Arbeitskreis Libellen Thüringen Seyring, Marcel Author aut Landesamt für Umweltschutz Sachsen‐Anhalt Spengler, Torsten Author aut Arbeitsgemeinschaft Libellen in Niedersachsen und Bremen Trockur, Bernd Author aut Arbeitskreis Libellen der DELATTINIA e.V. ‐ Naturforschende Gesellschaft des Saarlandes Willigalla, Christoph Author aut WÖG Willigalla Ökologische Gutachten Bruelheide, Helge Author aut German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Martin Luther University Halle‐Wittenberg Jansen, Florian Author aut University of Rostock Bonn, Aletta Author aut German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Friedrich Schiller University Jena Helmholtz‐Center for Environmental Research – UFZ (DE-588)1140649558 Franzén, Markus Editor edt Friedrich-Schiller-Universität Jena Fakultät für Biowissenschaften host institution his 27:8<1353 Divers Distrib Diversity and Distributions 1366-9516 1472-4642 dbt_mods_00049602 https://www.db-thueringen.de/receive/dbt_mods_00049601 object in context https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00054057/DDI_DDI13274.pdf raw object https://www.db-thueringen.de/rsc/thumbnail/dbt_mods_00049601.png preview https://www.db-thueringen.de/receive/dbt_mods_00049601 uri