Large-scale monitoring of effects of clothianidin dressed oilseed rape seeds on pollinating insects in Northern Germany : implementation of the monitoring project and its representativeness
Monitoring studies at the landscape level are complex, expensive and difficult to conduct. Many aspects have to be considered to avoid confounding effects which is probably the reason why they are not regularly performed in the context of risk assessments of plant protection products to pollinating...
| Veröffentlicht in: | Ecotoxicology (London, England). - 1992. - 25(2016), 9 vom: 01. Nov., Seite 1630-1647 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2016
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| Zugriff auf das übergeordnete Werk: | Ecotoxicology (London, England) |
| Schlagworte: | Journal Article Bee monitoring GIS Risk assessment Site selection Spatial analysis Sublethal effects Guanidines Insecticides Neonicotinoids mehr... |
| Zusammenfassung: | Monitoring studies at the landscape level are complex, expensive and difficult to conduct. Many aspects have to be considered to avoid confounding effects which is probably the reason why they are not regularly performed in the context of risk assessments of plant protection products to pollinating insects. However, if conducted appropriately their contribution is most valuable. In this paper we identify the requirements of a large-scale monitoring study for the assessment of side-effects of clothianidin seed-treated winter oilseed rape on three species of pollinating insects (Apis mellifera, Bombus terrestris and Osmia bicornis) and present how these requirements were implemented. Two circular study sites were delineated next to each other in northeast Germany and comprised almost 65 km2 each. At the reference site, study fields were drilled with clothianidin-free OSR seeds while at the test site the oilseed rape seeds contained a coating with 10 g clothianidin and 2 g beta-cyfluthrin per kg seeds (Elado®). The comparison of environmental conditions at the study sites indicated that they are as similar as possible in terms of climate, soil, land use, history and current practice of agriculture as well as in availability of oilseed rape and non-crop bee forage. Accordingly, local environmental conditions were considered not to have had any confounding effect on the results of the monitoring of the bee species. Furthermore, the study area was found to be representative for other oilseed rape cultivation regions in Europe |
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| Beschreibung: | Date Completed 13.01.2017 Date Revised 31.03.2024 published: Print-Electronic CommentIn: Ecotoxicology. 2018 Jan;27(1):1-7. - PMID 29138969 Citation Status MEDLINE |
| ISSN: | 1573-3017 |