More than 75 percent decline over 27 years in total flying insect biomass in protected areas
| Autor: | Dave Goulson, Henk Siepel, Eelke Jongejans, Werner Stenmans, Thomas Hörren, Nick Hofland, Andreas Müller, Hubert Sumser, Heinz Schwan, Caspar A. Hallmann, Hans de Kroon, Martin Sorg |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Insecta Time Factors Animal Ecology and Physiology Social Sciences lcsh:Medicine Plant Science Insect Q1 01 natural sciences Ecosystem services Land Use Biomass Taxonomic rank lcsh:Science GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) Conservation Science media_common Biomass (ecology) Multidisciplinary Geography Ecology Eukaryota Plants Terrestrial Environments Insects Habitat Grasslands Organismal Animal Physiology Seasons Research Article Conservation of Natural Resources Arthropoda Ecological Metrics media_common.quotation_subject Biomass (Ecology) Herbs Biology Human Geography 010603 evolutionary biology 03 medical and health sciences Animals Ecosystem Plant Communities Land use Plant Ecology Ecology and Environmental Sciences lcsh:R fungi Organisms Biology and Life Sciences Species diversity Species Diversity Models Theoretical 15. Life on land Invertebrates 030104 developmental biology Flight Animal Sample Size Earth Sciences lcsh:Q |
| Zdroj: | PLoS ONE, Vol 12, Iss 10, p e0185809 (2017) PLoS ONE PLoS One, 12, 1-21 PLoS One, 12, 10, pp. 1-21 |
| ISSN: | 1932-6203 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|