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Philosophical Transactions of the Royal Society B: Biological Sciences logoLink to Philosophical Transactions of the Royal Society B: Biological Sciences
. 2003 Nov 29;358(1439):1779–1799. doi: 10.1098/rstb.2003.1403

On the rationale and interpretation of the Farm Scale Evaluations of genetically modified herbicide-tolerant crops.

G R Squire 1, D R Brooks 1, D A Bohan 1, G T Champion 1, R E Daniels 1, A J Haughton 1, C Hawes 1, M S Heard 1, M O Hill 1, M J May 1, J L Osborne 1, J N Perry 1, D B Roy 1, I P Woiwod 1, L G Firbank 1
PMCID: PMC1693276  PMID: 14561314

Abstract

Farmland biodiversity and food webs were compared in conventional and genetically modified herbicide-tolerant (GMHT) crops of beet (Beta vulgaris L.), maize (Zea mays L.) and both spring and winter oilseed rape (Brassica napus L.). GMHT and conventional varieties were sown in a split-field experimental design, at 60-70 sites for each crop, spread over three starting years beginning in 2000. This paper provides a background to the study and the rationale for its design and interpretation. It shows how data on environment, field management and the biota are used to assess the current state of the ecosystem, to define the typical arable field and to devise criteria for selecting, sampling and auditing experimental sites in the Farm Scale Evaluations. The main functional and taxonomic groups in the habitat are ranked according to their likely sensitivity to GMHT cropping, and the most responsive target organisms are defined. The value of the seedbank as a baseline and as an indicator of historical trends is proposed. Evidence from experiments during the twentieth century is analysed to show that large changes in field management have affected sensitive groups in the biota by ca. 50% during a year or short run of years--a figure against which to assess any positive or negative effects of GMHT cropping. The analysis leads to a summary of factors that were, and were not, examined in the first 3 years of the study and points to where modelling can be used to extrapolate the effects to the landscape and the agricultural region.

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Selected References

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  1. Buckelew L. D., Pedigo L. P., Mero H. M., Owen M. D., Tylka G. L. Effects of weed management systems on canopy insects in herbicide-resistant soybeans. J Econ Entomol. 2000 Oct;93(5):1437–1443. doi: 10.1603/0022-0493-93.5.1437. [DOI] [PubMed] [Google Scholar]
  2. Champion G. T., May M. J., Bennett S., Brooks D. R., Clark S. J., Daniels R. E., Firbank L. G., Haughton A. J., Hawes C., Heard M. S. Crop management and agronomic context of the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philos Trans R Soc Lond B Biol Sci. 2003 Nov 29;358(1439):1801–1818. doi: 10.1098/rstb.2003.1405. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Dewar Alan M., May Mike J., Woiwod Ian P., Haylock Lisa A., Champion Gillian T., Garner Beulah H., Sands Richard J. N., Qi Aiming, Pidgeon John D. A novel approach to the use of genetically modified herbicide tolerant crops for environmental benefit. Proc Biol Sci. 2003 Feb 22;270(1513):335–340. doi: 10.1098/rspb.2002.2248. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Firbank L. G., Forcella F. Agriculture. Genetically modified crops and farmland biodiversity. Science. 2000 Sep 1;289(5484):1481–1482. doi: 10.1126/science.289.5484.1481. [DOI] [PubMed] [Google Scholar]
  5. Haughton A. J., Bell J. R., Boatman N. D., Wilcox A. The effect of the herbicide glyphosate on non-target spiders: Part II. Indirect effects on Lepthyphantes tenuis in field margins. Pest Manag Sci. 2001 Nov;57(11):1037–1042. doi: 10.1002/ps.389. [DOI] [PubMed] [Google Scholar]
  6. Haughton A. J., Bell J. R., Wilcox A., Boatman N. D. The effect of the herbicide glyphosate on non-target spiders: Part I. Direct effects on Lepthyphantes tenuis under laboratory conditions. Pest Manag Sci. 2001 Nov;57(11):1033–1036. doi: 10.1002/ps.388. [DOI] [PubMed] [Google Scholar]
  7. Hawes C., Haughton A. J., Osborne J. L., Roy D. B., Clark S. J., Perry J. N., Rothery P., Bohan D. A., Brooks D. R., Champion G. T. Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philos Trans R Soc Lond B Biol Sci. 2003 Nov 29;358(1439):1899–1913. doi: 10.1098/rstb.2003.1406. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Kunin WE. Extrapolating species abundance across spatial scales . Science. 1998 Sep 4;281(5382):1513–1515. doi: 10.1126/science.281.5382.1513. [DOI] [PubMed] [Google Scholar]
  9. Losey J. E., Rayor L. S., Carter M. E. Transgenic pollen harms monarch larvae. Nature. 1999 May 20;399(6733):214–214. doi: 10.1038/20338. [DOI] [PubMed] [Google Scholar]
  10. Pachepsky E., Crawford J. W., Bown J. L., Squire G. Towards a general theory of biodiversity. Nature. 2001 Apr 19;410(6831):923–926. doi: 10.1038/35073563. [DOI] [PubMed] [Google Scholar]
  11. Rieger Mary A., Lamond Michael, Preston Christopher, Powles Stephen B., Roush Richard T. Pollen-mediated movement of herbicide resistance between commercial canola fields. Science. 2002 Jun 28;296(5577):2386–2388. doi: 10.1126/science.1071682. [DOI] [PubMed] [Google Scholar]
  12. Roy D. B., Bohan D. A., Haughton A. J., Hill M. O., Osborne J. L., Clark S. J., Perry J. N., Rothery P., Scott R. J., Brooks D. R. Invertebrates and vegetation of field margins adjacent to crops subject to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philos Trans R Soc Lond B Biol Sci. 2003 Nov 29;358(1439):1879–1898. doi: 10.1098/rstb.2003.1404. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Smart S. M., Clarke R. T., van de Poll H. M., Robertson E. J., Shield E. R., Bunce R. G. H., Maskell L. C. National-scale vegetation change across Britain; an analysis of sample-based surveillance data from the Countryside Surveys of 1990 and 1998. J Environ Manage. 2003 Mar;67(3):239–254. doi: 10.1016/s0301-4797(02)00177-9. [DOI] [PubMed] [Google Scholar]
  14. Timmons A. M., Charters Y. M., Crawford J. W., Burn D., Scott S. E., Dubbels S. J., Wilson N. J., Robertson A., O'Brien E. T., Squire G. R. Risks from transgenic crops. Nature. 1996 Apr 11;380(6574):487–487. doi: 10.1038/380487a0. [DOI] [PubMed] [Google Scholar]
  15. Wang D. C., Taraschi T. F., Rubin E., Janes N. Configurational entropy is the driving force of ethanol action on membrane architecture. Biochim Biophys Acta. 1993 Jan 18;1145(1):141–148. doi: 10.1016/0005-2736(93)90391-c. [DOI] [PubMed] [Google Scholar]
  16. Watkinson A. R., Freckleton R. P., Robinson R. A., Sutherland W. J. Predictions of biodiversity response to genetically modified herbicide-tolerant crops. Science. 2000 Sep 1;289(5484):1554–1557. doi: 10.1126/science.289.5484.1554. [DOI] [PubMed] [Google Scholar]

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