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26 results on '"Randle, Z."'

1. Invertebrate Responses to the Management of Genetically Modified Herbicide-Tolerant and Conventional Spring Crops. I. Soil-Surface-Active Invertebrates

Author

Brooks, D. R., Bohan, D. A., Champion, G. T., Haughton, A. J., Hawes, C., Heard, M. S., Clark, S. J., Dewar, A. M., Firbank, L. G., Perry, J. N., Rothery, P., Scott, R. J., Woiwod, I. P., Birchall, C., Skellern, M. P., Walker, J. H., Baker, P., Bell, D., Browne, E. L., Dewar, A. J. G., Fairfax, C. M., Garner, B. H., Haylock, L. A., Horne, S. L., Hulmes, S. E., Mason, N. S., Norton, L. R., Nuttall, P., Randle, Z., Rossall, M. J., Sands, R. J. N., Singer, E. J., and Walker, M. J.

Published
2003

4. The State of Britain’s Larger Moths 2021

Author

Fox, R., Dennis, E. B., Harrower, C. A., Blumgart, D., Bell, J. R., Shortall, C. R., Cook, P., Davis, A. M., Evans-Hill, L. J., Haynes, F., Hill, D., Isaac, N. J. B., Parsons, M. S., Pocock, M. J. O., Prescott, T., Randle, Z., Tordoff. G. M., Tuson, D., and Bourn N. A. D.

Abstract

This report summarises current knowledge of the state of Britain’s c.900 species of larger moths, presenting analyses of long-term change based on millions of records gathered through the Rothamsted Insect Survey (RIS) and National Moth Recording Scheme (NMRS).

Published
2021

5. United Kingdom Butterfly Monitoring Scheme annual report 2017

Author

Brereton, T.M., Botham, M.S., Middlebrook, I., Randle, Z., Noble, D., Harris, S., Dennis, E.B., Robinson, A., Roy, D.B., Brereton, T.M., Botham, M.S., Middlebrook, I., Randle, Z., Noble, D., Harris, S., Dennis, E.B., Robinson, A., and Roy, D.B.

Published
2018

9. Comparison of trends in butterfly populations between monitoring schemes

Author

Roy, D.B., Ploquin, E.F., Randle, Z., Risely, K., Botham, M.S., Middlebrook, I., Noble, D., Cruickshanks, K., Freeman, S.N., Brereton, T.M., Roy, D.B., Ploquin, E.F., Randle, Z., Risely, K., Botham, M.S., Middlebrook, I., Noble, D., Cruickshanks, K., Freeman, S.N., and Brereton, T.M.

Abstract

Butterflies are an important indicator of the impacts of environmental change. Butterfly monitoring schemes (BMS) have provided national and Europe-wide trends in their abundance and been widely used for research. Most schemes sample sites that are self-selected by contributors and therefore tend to cover locations that are rich in butterflies. To provide a more representative assessment of butterfly populations, the wider countryside butterfly survey (WCBS) was developed with a stratified-random sample of survey sites across the UK. We compare butterfly trends from the WCBS locations against those measured from traditional butterfly transects which are typically located in areas of good quality semi-natural habitats. Across the 26 species analysed, there was a significant positive relationship between trends measured from the two schemes between 2009 and 2013, the period when both schemes were operating fully. There was a tendency (17 out of 26 species analysed) for these changes to be greater within WCBS compared to traditional BMS transects, although this effect was not consistent across comparisons between pairs of consecutive years. When assessing these individual year-to-year changes, there was however a significant correlation between the two schemes in all cases. Over relatively short time periods, weather patterns are likely to dominate butterfly population fluctuations and lead to comparable trends across monitoring schemes. Over longer time periods, differences in land management may affect habitat condition differently for protected areas versus the wider countryside and it is therefore important to maintain comprehensive butterfly monitoring programmes to detect and interpret such effects.

Published
2015

10. The state of the UK’s butterflies 2015

Author

Fox, R., Brereton, T.M., Asher, J., August, T.A., Botham, M.S., Bourn, N.A.D., Cruickshanks, K.L., Bulman, C.R., Ellis, S., Harrower, C.A., Middlebrook, I., Noble, D.G., Powney, G.D., Randle, Z., Warren, M.S., Roy, D.B., Fox, R., Brereton, T.M., Asher, J., August, T.A., Botham, M.S., Bourn, N.A.D., Cruickshanks, K.L., Bulman, C.R., Ellis, S., Harrower, C.A., Middlebrook, I., Noble, D.G., Powney, G.D., Randle, Z., Warren, M.S., and Roy, D.B.

Published
2015

15. Early parasitoid recruitment in invading Cynipid galls

Author

Ozaki, K. et al, Schonrogge, K., Moriya, S., Melika, G., Randle, Z., Begg, T., Aebi, A., Stone, G., Ozaki, K. et al, Schonrogge, K., Moriya, S., Melika, G., Randle, Z., Begg, T., Aebi, A., and Stone, G.

Published
2006

19. Countryside Survey 2000. Module 2: Freshwater studies

Author

Furse, M. T., Davy-Bowker, J., Dawson, F. H., Gunn, R. J. M., Blackburn, J. H., Gunn, I. M., Winder, J. M., Scarlett, P. M., Gravelle, M., Kneebone, N., Nesbitt, I., Amarillo, M., Brereton, C., Cannan, C. E., Collett, G., Collier, D., Cooper, G., Dent, M., Fairfax, C. M., Hardie, D. J., Henville, P., Hilton, C., James, B., Moorhouse, C., Randle, Z., Shirley, C., Small, S. R., Vowles, K. E., Clarke, R. T., Watkins, J. W., Furse, M. T., Davy-Bowker, J., Dawson, F. H., Gunn, R. J. M., Blackburn, J. H., Gunn, I. M., Winder, J. M., Scarlett, P. M., Gravelle, M., Kneebone, N., Nesbitt, I., Amarillo, M., Brereton, C., Cannan, C. E., Collett, G., Collier, D., Cooper, G., Dent, M., Fairfax, C. M., Hardie, D. J., Henville, P., Hilton, C., James, B., Moorhouse, C., Randle, Z., Shirley, C., Small, S. R., Vowles, K. E., Clarke, R. T., and Watkins, J. W.

Published
2003

21. Countryside Survey 2000. Module 2: survey of freshwater habitats. The field survey

Author

Furse, M. T., Dawson, F. H., Amarillo, M. L., Blackburn, J. H., Brereton, C., Cannan, C. E., Collett, G. D., Collier, D. C., Dent, M. M., Fairfax, C. M., Gunn, I. M., Gunn, R. J. M., Gravelle, M. J., Henville, P., Hilton, C. J., James, J. B., Moorhouse, C. D., Randle, Z., Scarlett, P. M., Shirley, C. L. R., Small, S. R., Winder, J. M., Furse, M. T., Dawson, F. H., Amarillo, M. L., Blackburn, J. H., Brereton, C., Cannan, C. E., Collett, G. D., Collier, D. C., Dent, M. M., Fairfax, C. M., Gunn, I. M., Gunn, R. J. M., Gravelle, M. J., Henville, P., Hilton, C. J., James, J. B., Moorhouse, C. D., Randle, Z., Scarlett, P. M., Shirley, C. L. R., Small, S. R., and Winder, J. M.

Published
1999

23. Environment Agency South West region River Habitat Survey 1997 [part II]

Author

Dawson, F.H., Henville, P., Scarlett, P., Smith, D., Pile, J., Crowhurst, L., Gravelle, M.J., Knights, N., Shirley, C.L.R., Collier, D., Randle, Z., Moorhouse, D.C, Dawson, F.H., Henville, P., Scarlett, P., Smith, D., Pile, J., Crowhurst, L., Gravelle, M.J., Knights, N., Shirley, C.L.R., Collier, D., Randle, Z., and Moorhouse, D.C

Published
1997

24. Where and why are species' range shifts hampered by unsuitable landscapes?

Author

Hodgson JA, Randle Z, Shortall CR, and Oliver TH

Subjects
Computer Simulation, Forests, Geography, Climate Change, Ecosystem
Abstract

There is widespread concern that species will fail to track climate change if habitat is too scarce or insufficiently connected. Targeted restoration has been advocated to help species adapt, and a "conductance" metric has been proposed, based on simulation studies, to predict effective habitat configurations. However, until now there is very little empirical evidence on how the configuration of habitat is affecting expansion at species' cool range margins. We analysed the colonisation events that have occurred in continuously monitored trap locations for 54 species of southerly distributed moths in Britain between 1985 and 2011. We tested whether the time until colonisation was affected by attributes of each species, and of intervening landcover and climate between the trap and the baseline distribution (1965-1985). For woodland species, the time until colonisation of new locations was predicted by the "conductance" of woodland habitat, and this relationship was general, regardless of species' exact dispersal distances and habitat needs. This shows that contemporary range shifts are being influenced by habitat configuration as well as simple habitat extent. For species associated with farmland or suburban habitats, colonisation was significantly slower through landscapes with a high variance in elevation and/or temperature. Therefore, it is not safe to assume that such relatively tolerant species face no geographical barriers to range expansion. We thus elucidate how species' attributes interact with landscape characteristics to create highly heterogeneous patterns of shifting at cool range margins. Conductance, and other predictors of range shifts, can provide a foundation for developing coherent conservation strategies to manage range shifts for entire communities., (© 2022 The Authors. Global Change Biology published by John Wiley & Sons Ltd.)

Published
2022
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25. Crop management and agronomic context of the Farm Scale Evaluations of genetically modified herbicide-tolerant crops.

Author

Champion GT, May MJ, Bennett S, Brooks DR, Clark SJ, Daniels RE, Firbank LG, Haughton AJ, Hawes C, Heard MS, Perry JN, Randle Z, Rossall MJ, Rothery P, Skellern MP, Scott RJ, Squire GR, and Thomas MR

Subjects
Beta vulgaris physiology, Brassica napus physiology, Geography, Plants, Genetically Modified metabolism, Seeds physiology, United Kingdom, Zea mays physiology, Agriculture methods, Crops, Agricultural metabolism, Ecosystem, Herbicides metabolism, Plants, Genetically Modified physiology
Abstract

The Farm Scale Evaluations of genetically modified herbicide-tolerant crops (GMHT) were conducted in the UK from 2000 to 2002 on beet (sugar and fodder), spring oilseed rape and forage maize. The management of the crops studied is described and compared with current conventional commercial practice. The distribution of field sites adequately represented the areas currently growing these crops, and the sample contained sites operated at a range of management intensities, including low intensity. Herbicide inputs were audited, and the active ingredients used and the rates and the timings of applications compared well with current practice for both GMHT and conventional crops. Inputs on sugar beet were lower than, and inputs on spring oilseed rape and forage maize were consistent with, national averages. Regression analysis of herbicide-application strategies and weed emergence showed that inputs applied by farmers increased with weed densities in beet and forage maize. GMHT crops generally received only one herbicide active ingredient per crop, later and fewer herbicide sprays and less active ingredient (for beet and maize) than the conventional treatments. The audit of inputs found no evidence of bias.

Published
2003
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26. Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. I. Soil-surface-active invertebrates.

Author

Brooks DR, Bohan DA, Champion GT, Haughton AJ, Hawes C, Heard MS, Clark SJ, Dewar AM, Firbank LG, Perry JN, Rothery P, Scott RJ, Woiwod IP, Birchall C, Skellern MP, Walker JH, Baker P, Bell D, Browne EL, Dewar AJ, Fairfax CM, Garner BH, Haylock LA, Horne SL, Hulmes SE, Mason NS, Norton LR, Nuttall P, Randle Z, Rossall MJ, Sands RJ, Singer EJ, and Walker MJ

Subjects
Animals, Beta vulgaris physiology, Brassica napus physiology, Plants, Genetically Modified metabolism, United Kingdom, Zea mays physiology, Agriculture methods, Biodiversity, Herbicides metabolism, Invertebrates physiology, Plants, Genetically Modified physiology
Abstract

The effects of herbicide management of genetically modified herbicide-tolerant (GMHT) beet, maize and spring oilseed rape on the abundance and diversity of soil-surface-active invertebrates were assessed. Most effects did not differ between years, environmental zones or initial seedbanks or between sugar and fodder beet. This suggests that the results may be treated as generally applicable to agricultural situations throughout the UK for these crops. The direction of the effects was evenly balanced between increases and decreases in counts in the GMHT compared with the conventional treatment. Most effects involving a greater capture in the GMHT treatments occurred in maize, whereas most effects involving a smaller capture were in beet and spring oilseed rape. Differences between GMHT and conventional crop herbicide management had a significant effect on the capture of most surface-active invertebrate species and higher taxa tested in at least one crop, and these differences reflected the phenology and ecology of the invertebrates. Counts of carabids that feed on weed seeds were smaller in GMHT beet and spring oilseed rape but larger in GMHT maize. In contrast, collembolan detritivore counts were significantly larger under GMHT crop management.

Published
2003
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