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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“Positive parochialism”, local belonging and ecological concerns: Revisiting Common Ground's Parish Maps project
TL;DR: Parish Maps as mentioned in this paper is a collection of thousands of maps created by the UK arts and environment charity Common Ground, and was appraised in 1996 by Crouch and Matless in this journal, arguing that the view of parochialism manifest by Parish Maps offers a foundation for ecological concern.
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Transcriptional and genomic parallels between the monoxenous parasite Herpetomonas muscarum and Leishmania
TL;DR: Drosophila-Herpetomonas is a suitable model for less accessible insect-trypanosomatid host-parasite systems such as sand fly-Leishmania, and strong similarities between the H. muscarum transcriptome during fruit fly infection, and those of Leishmania during sand fly infections are found.
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Temperature drives variation in flying insect biomass across a German malaise trap network
Ellen A. R. Welti,Petr Zajicek,Mark Frenzel,Manfred Ayasse,Tim Bornholdt,Jörn Buse,Alice Classen,Frank Dziock,Rolf A. Engelmann,Jana Englmeier,Martin Fellendorf,Marc I. Förschler,Ute Fricke,Cristina Ganuza,Mathias Hippke,Günter Hoenselaar,Andrea Kaus-Thiel,Janika Kerner,Daniela Kilian,Klaus Mandery,Andreas Marten,Michael T. Monaghan,Michael T. Monaghan,Carsten Morkel,Jörg Müller,Stephanie Puffpaff,Sarah Redlich,Ronny Richter,Sandra Rojas-Botero,Tobias Scharnweber,Gregor Scheiffarth,Paul Schmidt Yáñez,Rhena Schumann,Sebastian Seibold,Ingolf Steffan-Dewenter,Stefan Stoll,Cynthia Tobisch,Sönke Twietmeyer,Johannes Uhler,Juliane Vogt,Dirk Weis,Wolfgang W. Weisser,Martin Wilmking,Peter Haase,Peter Haase +44 more
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Multidecadal changes in functional diversity lag behind the recovery of taxonomic diversity
Nathan Jay Baker,Francesca Pilotto,Phillip J. Haubrock,Phillip J. Haubrock,Burkhard Beudert,Peter Haase,Peter Haase +6 more
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Pesticides and Soil Invertebrates: A Hazard Assessment
TL;DR: In this paper, a review of nearly 400 studies on the effects of pesticides on non-target invertebrates that develop in the soil is presented, including 275 unique species, taxa or combined taxa of soil organisms and 284 different pesticide active ingredients or unique mixtures.
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