{"id":100653,"date":"2017-10-23T12:00:42","date_gmt":"2017-10-23T11:00:42","guid":{"rendered":"https:\/\/www.transcend.org\/tms\/?p=100653"},"modified":"2017-10-30T10:13:13","modified_gmt":"2017-10-30T10:13:13","slug":"more-than-75-percent-decline-over-27-years-in-total-flying-insect-biomass-in-protected-areas","status":"publish","type":"post","link":"https:\/\/www.transcend.org\/tms\/2017\/10\/more-than-75-percent-decline-over-27-years-in-total-flying-insect-biomass-in-protected-areas\/","title":{"rendered":"More Than 75 Percent Decline Over 27 Years in Total Flying Insect Biomass in Protected Areas"},"content":{"rendered":"
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Pesticides could be to blame for decline in flying insects.<\/p><\/div>\n

Abstract<\/strong><\/p>\n

18 Oct 2017 – <\/em>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.<\/p>\n

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.<\/p>\n

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DOWNLOAD PDF FILE:\u00a0<\/strong>More Than 75 Percent Decline Over 27 Years in Total Flying Insect Biomass in Protected Areas<\/a><\/p><\/blockquote>\n

__________________________________________________<\/strong><\/p>\n

Caspar A. Hallmann – Roles Conceptualization, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing \u2013 original draft, Writing \u2013 review & editing. E-mail: c.hallmann@science.ru.nl<\/a>. Affiliation Radboud University, Institute for Water and Wetland Research, Animal Ecology and Physiology & Experimental Plant Ecology, PO Box 9100, 6500 GL Nijmegen, The Netherlands ORCID http:\/\/orcid.org\/0000-0002-4630-0522<\/a> <\/em><\/p>\n

Martin Sorg – Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Resources, Writing \u2013 review & editing. Affiliation Entomological Society Krefeld e.V., Entomological Collections Krefeld, Marktstrasse 159, 47798 Krefeld, Germany <\/em><\/p>\n

Eelke Jongejans – Roles Conceptualization, Funding acquisition, Investigation, Supervision, Writing \u2013 review & editing. Affiliation Radboud University, Institute for Water and Wetland Research, Animal Ecology and Physiology & Experimental Plant Ecology, PO Box 9100, 6500 GL Nijmegen, The Netherlands <\/em><\/p>\n

Henk Siepel – Roles Conceptualization, Investigation, Supervision, Writing \u2013 review & editing. Affiliation Radboud University, Institute for Water and Wetland Research, Animal Ecology and Physiology & Experimental Plant Ecology, PO Box 9100, 6500 GL Nijmegen, The Netherlands <\/em><\/p>\n

Nick Hofland – Roles Formal analysis, Resources, Software, Validation. Affiliation Radboud University, Institute for Water and Wetland Research, Animal Ecology and Physiology & Experimental Plant Ecology, PO Box 9100, 6500 GL Nijmegen, The Netherlands <\/em><\/p>\n

Heinz Schwan – Roles Data curation, Funding acquisition, Investigation, Methodology, Project administration, Writing \u2013 review & editing. Affiliation Entomological Society Krefeld e.V., Entomological Collections Krefeld, Marktstrasse 159, 47798 Krefeld, Germany <\/em><\/p>\n

Werner Stenmans – Roles Data curation, Funding acquisition, Methodology, Project administration, Writing \u2013 review & editing. Affiliation Entomological Society Krefeld e.V., Entomological Collections Krefeld, Marktstrasse 159, 47798 Krefeld, Germany <\/em><\/p>\n

Andreas M\u00fcller – Roles Data curation, Project administration, Resources, Writing \u2013 review & editing. Affiliation Entomological Society Krefeld e.V., Entomological Collections Krefeld, Marktstrasse 159, 47798 Krefeld, Germany <\/em><\/p>\n

Hubert Sumser – Roles Data curation, Investigation, Methodology, Resources, Writing \u2013 review & editing. Affiliation Entomological Society Krefeld e.V., Entomological Collections Krefeld, Marktstrasse 159, 47798 Krefeld, Germany <\/em><\/p>\n

Thomas H\u00f6rren – Roles Data curation, Investigation, Methodology, Resources, Writing \u2013 review & editing. Affiliation Entomological Society Krefeld e.V., Entomological Collections Krefeld, Marktstrasse 159, 47798 Krefeld, Germany <\/em><\/p>\n

Dave Goulson – Roles Conceptualization, Investigation, Writing \u2013 review & editing. Affiliation University of Sussex, School of Life Sciences, Falmer, Brighton BN1 9QG, United Kingdom <\/em><\/p>\n

Hans de Kroon – Roles Conceptualization, Funding acquisition, Investigation, Methodology, Resources, Supervision, Writing \u2013 review & editing. Affiliation Radboud University, Institute for Water and Wetland Research, Animal Ecology and Physiology & Experimental Plant Ecology, PO Box 9100, 6500 GL Nijmegen, The Netherlands <\/em><\/p>\n

Go to Original \u2013 journals.plos.org<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

18 Oct 2017 – German researchers have reported a rapid drop in the number of flying insects at dozens of natural reserves. Many of the reserves involved are surrounded by farms and pesticides could be to blame. According to the report, between 1989 and 2016 the biomass of flying insects captured in 63 different locations in Germany – including grasslands, swamps and sand dunes – decreased by a seasonal average of 76%.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61,145,140,200],"tags":[],"class_list":["post-100653","post","type-post","status-publish","format-standard","hentry","category-environment","category-science","category-organic-gmo-genetic-engineering","category-academia-knowledge-scholarship"],"_links":{"self":[{"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/posts\/100653","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/comments?post=100653"}],"version-history":[{"count":0,"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/posts\/100653\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/media?parent=100653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/categories?post=100653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.transcend.org\/tms\/wp-json\/wp\/v2\/tags?post=100653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}