| Invertebrate biodiversity in maize following withdrawal of triazine herbicides. | |
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MedLine Citation:
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PMID: 16011925 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Responses of key invertebrates within Farm Scale Evaluations (FSEs) of maize reflected advantageous effects for weeds under genetically modified herbicide-tolerant (GMHT) management. Triazine herbicides constitute the main weed control in current conventional systems, but will be withdrawn under future EU guidelines. Here, we reappraise FSE data to predict effects of this withdrawal on invertebrate biodiversity under alternative management scenarios. Invertebrate indicators showed remarkably consistent and sensitive responses to weed abundance. Their numbers were consistently reduced by atrazine used prior to seedling emergence, but at reduced levels compared to similar observations for weeds. Large treatment effects were, therefore, maintained for invertebrates when comparing other conventional herbicide treatments with GMHT, despite reduced differences in weed abundance. In particular, benefits of GMHT remained under comparisons with best estimates of future conventional management without triazines. Pitfall trapped Collembola, seed-feeding carabids and a linyphiid spider followed closely trends for weeds and may, therefore, prove useful for modelling wider biodiversity effects of herbicides. Weaker responses to triazines applied later in the season, at times closer to the activity and capture of invertebrates, suggest an absence of substantial direct effects. Contrary responses for some suction-sampled Collembola and the carabid Loricera pilicornis were probably caused by a direct deleterious effect of triazines. |
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Authors:
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David R Brooks; Suzanne J Clark; Joe N Perry; David A Bohan; Gillian T Champion; Les G Firbank; Alison J Haughton; Cathy Hawes; Matthew S Heard; Ian P Woiwod |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Proceedings. Biological sciences / The Royal Society Volume: 272 ISSN: 0962-8452 ISO Abbreviation: Proc. Biol. Sci. Publication Date: 2005 Jul |
Date Detail:
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Created Date: 2005-07-13 Completed Date: 2005-10-04 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 101245157 Medline TA: Proc Biol Sci Country: England |
Other Details:
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Languages: eng Pagination: 1497-502 Citation Subset: IM |
Affiliation:
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Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK. david.brooks@bbsrc.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Animals Biodiversity* Great Britain Host-Parasite Interactions Invertebrates / drug effects, physiology* Plants, Genetically Modified Population Density Triazines / toxicity Zea mays / parasitology* |
| Chemical | |
Reg. No./Substance:
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0/Triazines |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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