More than 75 percent decline over 27 years in total flying insect biomass in protected areas.
Caspar A. Hallmann,Martin Sorg,Eelke Jongejans,Henk Siepel,Nick Hofland,Heinz Schwan,Werner Stenmans,Andreas Müller,Hubert Sumser,Thomas Hörren,Dave Goulson,Hans de Kroon +11 more
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This analysis estimates a seasonal decline of 76%, and mid-summer decline of 82% in flying insect biomass over the 27 years of study, and shows that this decline is apparent regardless of habitat type, while changes in weather, land use, and habitat characteristics cannot explain this overall decline.Abstract:
Global declines in insects have sparked wide interest among scientists, politicians, and the general public. Loss of insect diversity and abundance is expected to provoke cascading effects on food webs and to jeopardize ecosystem services. Our understanding of the extent and underlying causes of this decline is based on the abundance of single species or taxonomic groups only, rather than changes in insect biomass which is more relevant for ecological functioning. Here, we used a standardized protocol to measure total insect biomass using Malaise traps, deployed over 27 years in 63 nature protection areas in Germany (96 unique location-year combinations) to infer on the status and trend of local entomofauna. Our analysis estimates a seasonal decline of 76%, and mid-summer decline of 82% in flying insect biomass over the 27 years of study. We show that this decline is apparent regardless of habitat type, while changes in weather, land use, and habitat characteristics cannot explain this overall decline. This yet unrecognized loss of insect biomass must be taken into account in evaluating declines in abundance of species depending on insects as a food source, and ecosystem functioning in the European landscape.read more
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Glowing, glowing, gone? Monitoring long-term trends in glow-worm numbers in south-east England
TL;DR: This paper used additive mixed models (GAMMs) to control for varying sampling effort, temporal autocorrelation, non-stationarity of seasonal phenology and nonlinearity of temporal trajectories across sites.
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Winners and losers over 35 years of dragonfly and damselfly distributional change in Germany
Diana E. Bowler,David Eichenberg,Klaus Jürgen Conze,Frank Suhling,Kathrin Baumann,Theodor Benken,André Bönsel,Torsten Bittner,Arne Drews,André Günther,Nick J. B. Isaac,Falk Petzold,Marcel Seyring,Torsten Spengler,Bernd Trockur,Christoph Willigalla,Helge Bruelheide,Florian Jansen,Aletta Bonn +18 more
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Analysis of tropical and temperate elevational gradients in arthropod abundance
TL;DR: It is suggested that future changes in the length of growing season will impact the elevation at which summer arthropod abundance peaks and the sharpness of the peak, likely affecting diversity and distribution of other taxa that interact with arthropods.
Posted ContentDOI
Winners and losers over 35 years of dragonfly and damselfly distributional change in Germany
Diana E. Bowler,David Eichenberg,K.J. Conze,Frank Suhling,K. Baumann,A. Bönsel,T. Bittner,A. Drews,Angela Günther,Nick J. B. Isaac,F. Petzold,M. Seyring,T. Spengler,B. Trockur,C. Willigalla,Helge Bruelheide,Florian Jansen,Aletta Bonn +17 more
TL;DR: This study compiled over 1 million occurrence records of Odonata (dragonflies and damselflies) from different regional databases across Germany and developed a novel approach using time-series clustering to identify groups of species with similar patterns of temporal change.
Journal ArticleDOI
One planet: one health. A call to support the initiative on a global science–policy body on chemicals and waste
Werner Brack,Damià Barceló Cullerés,Alistair B.A. Boxall,Hélène Budzinski,Sara Castiglioni,Adrian Covaci,Valeria Dulio,Beate I. Escher,Peter Fantke,Faith Jebiwot Kandie,Despo Fatta-Kassinos,Félix Hernández,Klára Hilscherová,Juliane Hollender,Henner Hollert,Annika Jahnke,Barbara Kasprzyk-Hordern,Stuart J. Khan,Andreas Kortenkamp,Klaus Kümmerer,Brice Lalonde,Marja H. Lamoree,Yves Levi,Pablo A. Lara Martín,Cassiana Carolina Montagner,Christian Mougin,Titus A.M. Msagati,Jörg Oehlmann,Leo Posthuma,Malcolm J. Reid,Martin Reinhard,Susan D. Richardson,Pawel Rostkowski,Emma L. Schymanski,Flurina Schneider,Jaroslav Slobodnik,Yasuyuki Shibata,Shane A. Snyder,Fernando Fabriz Sodré,I. Teodorovic,Kevin V. Thomas,Gisela de Aragão Umbuzeiro,Pham Hung Viet,Karina Gin Yew-Hoong,Xiaowei Zhang,Ettore Zuccato +45 more
TL;DR: In this paper , the authors call scientists and practitioners to mobilize their scientific networks and to intensify science-policy interaction with national governments to support the negotiations on the establishment of an intergovernmental body based on scientific knowledge explaining the anticipated benefit for human and environmental health.
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