Rothamsted Research

where knowledge grows

clark

Suzanne Clark

Role(s):
Research Scientist
Computational & Systems Biology
Harpenden
Works With:
Phone:
+44 (0) 1582 763 133 ext: +44 1582 938742
Location:
Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ
Past Projects
Member
  • Application of statistical methods to predictive biology
  • Combating resistance to aphicides in UK aphid pests

PERRY, J.N. & CLARK, S.J. (1983) Use of population models to estimate the proportion of cyst-nematode eggs killed by fumigation. Journal of Applied Ecology 20, 857-864.

JOHNSON, C.G., WALSH, J.F., DAVIES, J.B., CLARK , S.J. & PERRY, J.N. (1985) The pattern and speed of displacement of females of Simulium damnosum Theobald s.l. (Diptera:simuliidae) across the Onchocerciasis Control Programme Area of West Africa in 1977 & 1978. Bulletin of Entomological Research 75, 73-92.

BROBYN, P.J., WILDING, N. & CLARK, S.J. (1985) The persistence of infectivity of conidia of the aphid pathogen Erynia neoaphidis on leaves in the field. Annals of Applied Biology 107, 365-376.

POWELL, W., WILDING, N., BROBYN, P.J. & CLARK, S.J. (1986) Interference between parasitiods [HYM:APHIDIIDAE] and fungi [ENTOMOPTHORALES] attacking cereal aphids. Entomophaga 31, 293-302.

FFRENCH-CONSTANT, R.H., DEVONSHIRE, A.L. & CLARK, S.J. (1987) Differential rate of selection for resistance by carbamate, organophosphorous and combined pyrethroid and organophosphorous insecticides in Myzus persicae (Sulzer) (Hemiptera:Aphididae). Bulletin of Entomological Research 77, 227-238.

BROBYN, P.J., WILDING, N. & CLARK, S.J. (1987) Laboratory observations on the effect of humidity on the persistence of infectivity of conidia of the aphid pathogen Erynia neoaphidis. Annals of Applied Biology, 110, 579-584.

BROBYN, P.J., CLARK, S.J. & WILDING, N. (1988) The effect of fungus infection of Metopolophium dirhodum (Hom.:Aphididae) on the oviposition behaviour of the aphid parasitoid Aphidius rhopalosiphi (Hym.:Aphidiidae). Entomophaga 33, 333-338.

FFRENCH-CONSTANT, R.H., CLARK , S.J. & DEVONSHIRE, A.L. (1988) Effect of decline of insecticide residues on selection for insecticide resistance in Myzus persicae (Sulzer)(Hemiptera:Aphididae). Bulletin of Entomological Research 78, 19-29.

PERRY, J.N., WALL, C. & CLARK, S.J. (1988) Close-range behaviour of male pea moths, Cydia nigricana, responding to sex-pheromone re-released via the substrate. Entomologia experimentalis et applicata 49, 37-42.

CLARK , S.J. & PERRY, J.N. (1989) Estimation of the Negative Binomial parameter κ by Maximum Quasi-Likelihood. Biometrics 45, 309-316.

HARRINGTON, R., BARTLET, E., RILEY, D.K., FFRENCH-CONSTANT, R.H. & CLARK , S.J. (1989) Resurgence of insecticide-resistant Myzus persicae on potatoes treated repeatedly with cypermethrin and mineral oil. Crop Protection 8, 340-348.

WILLIAMS, I.H., MARTIN, A.P., FERGUSON , A.W. & CLARK, S.J. (1990) Effect of pollination on flower, pod and seed production in white lupin (Lupinus albus). Journal of Agricultural Science, Cambridge 115, 67-73.

WILLIAMS, I.H., MARTIN, A.P. & CLARK, S.J. (1990) Pollination requirements of linseed (Linum usitatissimum). Journal of Agricultural Science, Cambridge 115, 347-352.

HARRINGTON, R., HOWLING, G.G., BALE, J.S. & CLARK, S.J. (1991) A new approach to the use of meteorological and suction trap data in predicting aphid problems. EPPO Bulletin 21, 499-505.

BUDENBERG, W.J., POWELL, W. & CLARK, S.J. (1992) The influence of aphids and honeydew on the leaving rate of searching aphid parasitoids from wheat plants. Entomologia experimentalis et applicata 63, 259-264.

CLARK , S.J., TATCHELL, G.M., PERRY, J.N. & WOIWOD, I.P. (1992) Comparative phenologies of two migrant cereal aphid species. Journal of Applied Ecology 29, 571-580.

PELL, J.K., WILDING, N., PLAYER, A.L. & CLARK, S.J. (1993) Selection of an isolate of Zoopthera radicans (Zygomycetes: Entomopthorales) for biocontrol of the diamondback moth Plutella xylostella (Lepidoptera: Yponomeutidae). Journal of Invertebrate Pathology 61, 75-80.

HOWLING, G.G., HARRINGTON, R., CLARK , S.J. & BALE, J.S. (1993) The use of multiple regression via principal components in forecasting early season aphid (Homoptera: Aphididae) flight. Bulletin of Entomological Research 83, 377-381.

DECKER, U.M., POWELL, W. & CLARK, S.J. (1993) Sex pheromones in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi. Entomologia experimentalis et applicata 69, 33-39.

TAYLOR , M.S., TATCHELL, G.M. & CLARK, S.J. (1994) Morph identification in natural populations of alate female bird cherry aphids, Rhopalosiphum padi L., by multivariate methods. Annals of Applied Biology 125, 1- 11.

BUTT, T.M., IBRAHIM, L., BALL, B.V. & CLARK, S.J. (1994) Pathogenicity of the entomogenous fungi Metarhizium anispoliae and Beauveria bassiana against the cabbage stem flea beetle (Psylliodes chrysocephala), three crucifer pests and the honeybee. Biocontrol, Science and Technology 4, 207-214.

BARTLET, E., PARSONS, D., WILLIAMS, I.H. & CLARK, S.J. (1994) The influence of glucosinolates and sugars on the feeding of the cabbage stem flea beetle, Psylliodes chrysocephala. Entomologia experimentalis et applicata 73, 77-83.

CLARK, S.J. & PERRY, J.N. (1994) Small sample estimation for Taylor 's power law. Journal of Environmental and Ecological Statistics 1, 287-302.

MORGAN, L.W., BODDY, L., CLARK , S.J. & WILDING, N. (1995) Influence of temperature on germination of primary and secondary conidia of Erynia neoaphidis (Zygomycetes: Entomophthorales). Journal of Invertebrate Pathology 65, 132-138.

MANN, J.A., TATCHELL, G.M. DUPUCH, M.J., HARRINGTON, R., CLARK , S.J. & McCARTNEY, H.A. (1995) Movement of apterous Sitobion avenae (Homoptera: Aphididae) in response to leaf perturbations caused by wind and rain. Annals of Applied Biology 126, 417-427.

CLARK , S.J., COWARD, N.P., DAWSON , G.W., HENDERSON , I.F. & MARTIN, A.P. (1995) Metal chelate molluscicides: the redistribution of iron diazaalkanolates from the gut lumen of the slug, Deroceras reticulatum (M�ller) (Pulmonata: Limacidae). Pesticide Science 44, 381-388.

BUTT, T.M. IBRAHIM, L., CLARK, S.J. & BECKETT, A. (1995) The germination behaviour of Metarhizium anisopliae on the surface of aphid and flea beetle cuticles. Mycological Research 99, 945-950.

ZHOU, X., HARRINGTON, R., WOIWOD, I.P., PERRY, J.N., BALE, J.S. & CLARK, S.J. (1995) Effects of temperature on aphid phenology. Global Change Biology 1, 303-313.

ZHOU, X., HARRINGTON, R., WOIWOD, I.P., PERRY, J.N., CLARK, S.J.& BALE, J.S. (1996) Impact of climate change on aphid flight phenology. Aspects of Applied Biology 45, 299-305.

UMORU, P.A., POWELL, W. & CLARK, S.J. (1996) Effect of Pirimicarb on the foraging behaviour of Diaeretiella rapae (Hymenoptera:Braconidae) on host-free and infested oilseed rape plants. Bulletin of Entomological Research 86, 193-201.

LOWLES, A.J., TATCHELL, G.M., HARRINGTON, R. & CLARK, S.J. (1996) The effect of temperature and inoculation access period on the transmission of barley yellow dwarf virus by Rhopalosiphum padi (L.) and Sitobion avenae (F.). Annals of Applied Biology 128, 45-53.

BARTLET, E., MITHEN, R. & CLARK, S.J. (1996) Feeding of the cabbage stem flea beetle Psylliodes chrysocephala on high and low glucosinolate cultivars of oilseed rape. Entomologia Experimentalis et Applicata 80, 87-89.

CLARK, S.J., PERRY, J.N. & MARSHALL, E.J.P. (1996) Estimating Taylor's power law parameters for weeds and the effect of spatial scale. Weed Research 36, 405-417.

CLARK, S.J., DODDS, C.J., HENDERSON, I.F. & MARTIN, A.P. (1997) A bioassay for screening materials influencing feeding behaviour in the field slug Deroceras reticulatum (M�ller). Annals of Applied Biology 130, 379-385.

PELL, J.K., PLUKE, R., CLARK, S.J., KENWARD, M.G. & ALDERSON,P.J. (1997) Interactions between two aphid natural enemies, the entomopathogenic fungus Erynia neoaphidis Remaudiere & Hennebert (Zygomycetes: Entomophthorales) and the predatory beetle Coccinella septempunctata L. (Coleoptera: Coccinellidae). Journal Invertebrate Pathology 69, 261-268.

OSBORNE, J.L., AWMACK, C.S., CLARK , S.J., WILLIAMS, I.H. & MILLS, V.C. (1997) Nectar and flower production in Vicia faba L. (field bean) at ambient and elevated carbon dioxide. Apidologie 28, 43-55.

ZHOU, X., PERRY, J.N., WOIWOD, I.P., HARRINGTON, R., BALE, J.S. & CLARK, S.J. (1997) Detecting chaotic dynamics of insect populations from long-term survey data. Ecological Entomology 22, 231-241.

MUDD, A., FERGUSON , A.W., BLIGHT, M.M., WILLIAMS, I.H., SCUBLA, P., SOLINAS, M. & CLARK, S.J. (1997) Extraction, isolation, and composition of oviposition-deterring secretion of cabbage seed weevil Ceutorhynchus assimilis. Journal of Chemical Ecology 23, 2227-2240.

FOSTER, S.P., HARRINGTON, R., DEVONSHIRE, A.L., DENHOLM, I., CLARK, S.J. & MUGGLESTONE, M.A. (1997) Evidence for a possible fitness trade-off between insecticide resistence and the low temperature movement that is essential for survival of UK populations of Myzus persicae (Hemiptera: Aphididae). Bulletin of Entomological Research 87, 573-579.

MIETKIEWSKI, R.T., PELL, J.K. & CLARK, S.J. (1997) Influence of pesticide use on the natural occurrence of entomopathogenic fungi in arable soils in the UK : field and laboratory comparisons. Biocontrol Science and Technology 7, 565-575.

LOXDALE, H.D., BROOKES, C.P., WYNNE, I.R. & CLARK, S.J. 1998) Genetic variability within and between English populations of the damson-hop aphid, Phorodon humuli (Hemiptera: Aphididae), with special reference to esterases associated with insecticide resistance. Bulletin of Entomological Research 88, 513-526.

ZHOU, X., PERRY, J.N., WOIWOD, I.P., HARRINGTON, R., BALE, J.S. & CLARK, S.J. (1997) Temperature change and complex aphid dynamics. Oecologia 112, 543-550.

PELL, J.K, BARKER, A.D.P., CLARK, S.J., WILDING, N. & ALDERSON, P.G. (1998) Use of a novel sporulation monitor to quantify the effects of formulation and storage on conidiation by dried mycelia of the entomopathogenic fungus Zoopthora radicans. Biocontrol Science & Technology 8, 13-21.

ROY , H.E., PELL, J.K., CLARK , S.J. & ALDERSON, P.G. (1998) Implications of predator foraging on aphid pathogen dynamics. Journal of Invertebrate Pathology 71, 236-247.

INYANG, E.N., BUTT, T.M., IBRAHIM, L., CLARK, S.J., PYE, B.J., BECKETT, A. & ARCHER, S. (1998) The effect of plant growth and topography on the acquisition of conidia of the insect pathogen Metarhizium anisopliae by larvae of Phaedon cochleariae. Mycological Research 102, 1365-1374.

TAYLOR , M.R., HARRINGTON, R. & CLARK, S.J. (1998) Unseasonal male aphids. In: Aphids in natural and managed ecosystems Nieto Nafria, J.M. & Dixon, A.F.G., eds, 287-293. Universidad de Leon , Leon .

KORIE, S., CLARK , S.J., PERRY, J.N., MUGGLESTONE, M.A., BARTLETT ,P.W., MARSHALL , E.J.P. & MANN, J.A. (1999) Analysing maps of dispersal around a single focus. Journal of Environmental and Ecological Statistics 5, 317-344.

CLARK , S.J., HENDERSON , I.F., HILL, D.J. & MARTIN, A.P. (1999) Use of lichen secondary metabolites as antifeedants to protect higher plants from damage caused by slug feeding. Annals of Applied Biology 134, 101-108.

FERGUSON, A.W., SOLINAS, M., ZIESMANN, J., ISIDORO, N., WILLIAMS, I.H., SCUBLA, P., MUDD, A., CLARK, S.J. & WADHAMS, L.J. (1999) Identification of the gland secreting oviposition-deterring pheromone in the cabbage seed weevil, Ceutorhynchus assimilis, and the mechanism of pheromone deposition. J. Insect Physiology 45, 687-699.

OSBORNE, J.L., CLARK, S.J., MORRIS, R.J., WILLIAMS, I.H., RILEY, J.R., SMITH, A.D., REYNOLDS, D.R. & EDWARDS A.S. (1999) A landscale scale study of bumble bee foraging range and constancy, using harmonic radar. J. of Applied Ecology 36, 519-533.

MENDOZA DE GIVES, P., DAVIES, K.G., CLARK, S.J. & BEHNKE, J.M. (1999) Predatory behaviour of trapping fungi against srf mutants of Caenorhabditis elegans and different plant and animal parasitic nematodes. Parasitology 119, 95-104.

IBRAHIM, L., BUTT, T.M., BECKETT, A. & CLARK, S.J. (1999) The germination of oil-formulated conidia of the insect- pathogen, Metarhizium anisopliae. Mycological Research 103, 901-907.

FERGUSON , A.W., ZIESMANN, J., BLIGHT, M.M., WILLIAMS, I.H., WADHAMS, L.J., CLARK , S.J., WOODCOCK, C.M. & MUDD, A. (1999) Perception of oviposition-deterring pheromone by cabbage seed weevil (Ceutorhynchus assimilis). J. of Chemical Ecology 25, 1655-1670.

FERGUSON , A.W., KLUKOWSKI, Z., WALCZAK, B., PERRY, J.N., MUGGLESTONE, M.A., CLARK , S.J. & WILLIAMS, I.H. (2000) The spatio-temporal distribution of adult Ceutorhynchus assimilis in a crop of winter oilseed rape in relation to the distribution of their larvae and that of the parasitoid Trichomalus perfectus. Entomologia Experimentalis et Applicata 95, 161-171.

KORIE, S., PERRY, J.N., MUGGLESTONE, M.A., CLARK, S.J., THOMAS, C.F.G. & MOHAMAD ROFF, M.N. (2000) Spatio-temporal associations in beetle and virus count data. JABES 5, 214-239.

SMYRNIOUDIS, I.N., HARRINGTON, R., KATIS, N. & CLARK, S.J. (2000) The effect of drought stress and temperature on spread of barley yellow dwarf virus (BYDV). Agricultural and Forest Entomology 2, 161-166.

COUTY, A., DE LA VI�A, G., CLARK , S.J., KAISER, L., PHAM-DELEGUE, M.-H. & POPPY, G.M. (2001) Direct and indirect sublethal effects of Galanthus nivalis agglutinin (GNA) on the development of a potato-aphid parasitoid, Aphelinus abdominalis (Hymenoptera: Aphelinidae). Journal of Insect Physiology 47, 553-561.

HEMMATI, F., PELL, J.K., McCARTNEY, H.A., CLARK, S.J. & DEADMAN, M.L. (2001) Conidial discharge in the aphid pathogen Erynia neoaphidis. Mycological Research 105, 715-722.

SCHULER, T.H., DENHOLM, I., JOUANIN, L., CLARK, S.J., CLARK, A.J. & POPPY, G.M. (2001) Population-scale scale laboratory studies of the effect of transgenic plants on nontarget insects. Molecular Ecology 10, 1845-1853.

SMYRNIOUDIS, I.N., HARRINGTON, R., HALL, M., KATIS, N. & CLARK, S.J. (2001) The effect of temperature on variation in transmission of a BYDV PAV-like isolate by clones of Rhopalosiphum padi and Sitobion avenae. European Journal of Plant Pathology 107, 167-173.

SMYRNIOUDIS, I.N., HARRINGTON, R., CLARK , S.J. & KATIS, N. (2001) The effect of natural enemies on the spread of barley yellow dwarf virus (BYDV) by Rhopalosiphum padi (Hemiptera: Aphididae). Bulletin of Entomological Research 91, 301-306.

COUTY, A., CLARK , S.J. & POPPY, G.M. (2001) Are fecundity and longevity of female Aphelinus abdominalis affected by development in GNA-dosed Macrosiphum euphorbiae? Physiological Entomology 26, 287-293.

FLORES CRESPO, J., MENDOZA DE GIVES, P., HERRERA RODRIQUEZ, D., LIEBANO HERNANDEZ, E., VAZQUEZ PRATS, V. & CLARK, S.J. (2001) Comparison of the use of two nematode-trapping fungi in the control of Haemonchus contortus infective larvae in ovine faeces. International Journal of Nematology 11, 253-259.

LLEWELLYN, K.S., LOXDALE, H.D., HARRINGTON, R., BROOKES, C.P., CLARK, S.J. & SUNNUCKS, P. (2003) Migration and genetic structure of the grain aphid (Sitobion avenae) in Britain related to climate and clonal fluctuation as revealed using microsatellites. Molecular Ecology 12, 21-34.

SHAW, K.E., DAVIDSON, G., CLARK, S.J., BALL, B.V., PELL, J.K., CHANDLER, D. & SUNDERLAND, K.D. (2002) Laboratory bioassays to assess the pathogenicity of mitosporic fungi to Varroa destructor (Acari: Mesostigmata), an ectoparasitic mite of the honeybee, Apis mellifera. Biological Control 24, 266-276.

YEO, H., PELL, J.K., ALDERSON, P.G., CLARK, S.J. & PYE, B.J. (2003) Laboratory evaluation of temperature effects on the germination and growth of entomopathogenic fungi and on their pathogenicity to two aphid species. Pest Management Science 59, 156-165.

PERRY, J.N., ROTHERY, P., CLARK, S.J., HEARD, M.S. & HAWES, C. (2003) Design, analysis and statistical power of the Farm-Scale Evaluations of genetically modified herbicide-tolerant crops . Journal of Applied Ecology 40, 17-31.

SCHULER, T.H., POTTING, R.P.J., DENHOLM, I., CLARK, S.J., CLARK, A.J., STEWART, C.N. & POPPY, G.M. (2003) Tritrophic choice experiments with Bt plants, the diamondback moth (Plutella xylostella) and the parasitoid Cotesia plutellae. Transgenic Reseach 12, 351-361.

FERGUSON , A.W., KLUKOWSKI, Z., WALCZAK, B., CLARK , S.J., MUGGLESTONE, M.A., PERRY, J.N. & WILLIAMS, I.H. (2003) Spatial distribution of pest insects in oilseed rape: implications for integrated pest management. Agriculture, Ecosystems and Environment 95, 509-521.

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., PERRY, J.N., RANDLE, Z., ROSSALL, M.J., ROTHERY, P., SKELLERN, M.P., SCOTT, R.J., SQUIRE, G.R. & THOMAS, M.R. (2003) Crop management and agronomic context of the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Phil. Trans. R. Soc. Lond. B. 358, 1801-1818.

HEARD, M.S., HAWES, C., CHAMPION, G.T., CLARK, S.J., FIRBANK, L.G., HAUGHTON, A.J., PARISH, A.M., PERRY, J.N., ROTHERY, P., SCOTT, R.J., SKELLERN, M.P., SQUIRE, G.R. & HILL, M.O. (2003) Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. I. Effects on abundance and diversity. Phil. Trans. R. Soc. Lond. B. 358, 1819-1832.

HEARD, M.S., HAWES, C., CHAMPION, G.T., CLARK, S.J., FIRBANK, L.G., HAUGHTON, A.J., PARISH, A.M., PERRY, J.N., ROTHERY, P., ROY, D.B., SCOTT, R.J., SKELLERN, M.P., SQUIRE, G.R. & HILL, M.O. (2003) Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. II. Effects on individual species. Phil. Trans. R. Soc. Lond. B. 358 , 1833-1846.

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. & WALKER, M.J. (2003) Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional crops. I. Soil-surface-active invertebrates. Phil. Trans. R. Soc. Lond. B. 358 , 1847-1862.

HAUGHTON, A.J., CHAMPION, G.T., HAWES, C., HEARD, M.S., BROOKS, D.R., BOHAN, D.A., CLARK, S.J., DEWAR, A.M., FIRBANK, L.G., OSBORNE, J.L., PERRY, J.N., ROTHERY, P., ROY, D.B., SCOTT, R.J., WOIWOD, I.P., BIRCHALL, C., SKELLERN, M.P., WALKER, J.H., BAKER, P., BROWNE, E.L., DEWAR, A.J.G., GARNER, B.H., HAYLOCK, L.A., HORNE, S.L., MASON, N.S., SANDS, R.J.N. & WALKER, M.J. (2003) Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. II. Within-field epigeal and aerial arthropods. Phil. Trans. R. Soc. Lond. B. 358, 1863-1877.

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., CHAMPION, G.T., HAWES, C., HEARD, M.S. & FIRBANK, L.G. (2003) 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. Phil. Trans. R. Soc. Lond. B. 358 , 1879-1898.

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., DEWAR, A.M., HEARD, M.S., WOIWOD, I.P., DANIELS, R.E., YOUNG, M.W., PARISH, A.M., SCOTT, R.J., FIRBANK, L.G. & SQUIRE, G.R. (2003) Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Phil. Trans. R. Soc. Lond. B. 358, 1899-1913.

ROTHERY, P., CLARK , S.J. & PERRY, J.N. (2003) Design of the farm-scale evaluations of genetically modified herbicide-tolerant crops. Environmetrics 14, 711-717.

FIRBANK, L.G., PERRY, J.N., SQUIRE, G.R., BOHAN, D.A., BROOKS, D.R., CHAMPION, G.T., CLARK, S.J., DANIELS, R.E., DEWAR, A.M., HAUGHTON, A.J., HAWES, C., HEARD, M.S., HILL, M.O., MAY, M.J., OSBORNE, J.L., ROTHERY, P., ROY, D.B., SCOTT, R.J. & WOIWOD, I.P. (2003) The implications of spring-sown genetically modified herbicide-tolerant crops for farmland biodiversity: A commentary on the Farm Scale Evaluations of Spring Sown Crops. ISBN 0-85521-036-2.

SHAH, P.A., CLARK, S.J. & PELL, J.K. (2003) Direct and indirect estimates of Pandora neoaphidis conidia in laboratory bioassays with aphids. Journal of Invertebrate Pathology 84, 145-147.

SHAH, P.A., CLARK, S.J. & PELL, J.K. (2004) Assessment of aphid host range and isolate variability in Pandora neoaphidis (Zygomycetes: Entomophthorales). Biological Control 29, 90-99.

SCHULER, T.H., DENHOLM, I., CLARK, S.J., STEWART, C.N. & POPPY, G.M. (2004) Effects of Bt plants on the development and survival of the parasitoid Cotesia plutellae (Hymenoptera: Braconidae) in susceptible and Bt-resistant larvae of the diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae). Journal of Insect Physiology 50, 435-443.

PERRY, J.N., FIRBANK, L.G., CHAMPION, G.T., CLARK, S.J., HEARD, M.S., MAY, M.J., HAWES, C., SQUIRE, G.R., ROTHERY, P., WOIWOD, I.P. & PIDGEON, J.D. (2004) Ban on triazine herbicides likely to reduce but not negate relative benefits of GMHT maize cropping. Nature 428, 313-316.

LLEWELLYN, K.S., LOXDALE, H.D., HARRINGTON, R., CLARK , S.J. & SUNNUCKS, P. (2004) Evidence for gene flow and local clonal selection in field populations of the grain aphid (Sitobion avenae) in Britain revealed using microsatellites. Heredity 93, 143-153.

EKESI, S., SHAH, P.A., CLARK, S.J. & PELL, J.K. (2005) Conservation biological control with the fungal pathogen Pandora neoaphidis: implications of aphid species, host plant and predator foraging. Agricultural and Forest Entomology 7, 21-30.

BARARI, H., COOK, S.M., CLARK , S.J. & WILLIAMS, I.H. (2005) Effect of a turnip rape (Brassica rapa) trap crop on stem-mining pests and their parasitoids in winter oilseed rape (Brassica napus). Biocontrol 50, 69-86.

BOHAN, D.A., BOFFEY, C.W.H., BROOKS, D.R., CLARK, S.J., DEWAR, A.M., FIRBANK, L.G., HAUGHTON, A.J., HAWES, C., HEARD, M.S., MAY, M.J., OSBORNE, J.L., PERRY, J.N., ROTHERY, P., ROY, D.B., SCOTT, R.J., SQUIRE, G.R., WOIWOD, I.P. & CHAMPION. G.T. (2005) Effects on weed and invertebrate abundance and diversity of herbicide management in genetically modified herbicide-tolerant winter-sown oilseed rape. Proc. Roy. Soc. B. 272, 463-474.

SCHULER, T.H., CLARK, A.J., CLARK, S.J., POPPY, G.M., STEWART, C.N. & DENHOLM, I. (2005) Laboratory studies of the effects of reduced prey choice caused by Bt plants on a predatory insect. Bulletin of Entomological Research 95, 243-247.

FIRBANK, L.G., ROTHERY, P., MAY, M.J., CLARK, S.J., SCOTT, R.J., STUART, R.C., BOFFEY, C.W.H., BROOKS, D.R., CHAMPION, G.T., HAUGHTON, A.J., HAWES, C., HEARD, M.S., DEWAR, A.M., PERRY, J.N. & SQUIRE, G.R. (2005) Effects of genetically modified herbicide-tolerant cropping systems on weed seedbanks in two years of following crops. Biology Letters 2, 140-143.

SHAH, P.A., GATEHOUSE, A.M.R., CLARK, S.J. & PELL, J.K (2005) Wheat containing snowdrop lectin (GNA) does not affect infection of the cereal aphid Metopolophium dirhodum by the fungal natural enemy Pandora neoaphidis. Transgenic Research 14, 473-476.

CLARK, S.J., ROTHERY, P. & PERRY, J.N. (2005) Farm Scale Evaluations of genetically modified herbicide-tolerant crops: a statistical assessment. Proc. Roy. Soc. B 273, 237 - 243.

WEI, W., SCHULER, T.H., CLARK, S.J., STEWART, C.N. Jr & POPPY, G.M. (2005) Age-related increase in levels of insecticidal protein in the progenies of transgenic oilseed rape and its efficacy against a susceptible strain of diamondback moth. Annals of Applied Biology 147, 227-234.

BROOKS, D.R., CLARK, S.J., PERRY, J.N., BOHAN, D.A., CHAMPION, G.T., FIRBANK, L.G., HAUGHTON, A.J., HAWES, C., HEARD, M.S. & WOIWOD, I.P. (2005) Invertebrate biodiversity in maize following withdrawal of triazine herbicides. Proc. Roy. Soc. B 272, 1497-1502.

BAVERSTOCK, J., ROY, H.E., CLARK, S.J., ALDERSON, P.G. & PELL, J.K. (2006) Effect of fungal infection on the reproductive potential of aphids and their progeny. Journal of Invertebrate Pathology 91, 136-139.

GIBBONS, D.W., BOHAN, D.A., ROTHERY, P., STUART, R.C., HAUGHTON, A.J., SCOTT, R.J., WILSON, J.D., PERRY, J.N., CLARK, S.J., DAWSON, R.J.G. & FIRBANK, L.G. (2006) Weed seed resources for birds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. Proc. Roy. Soc. B 273, 1921-1928.

WELHAM, S.J. & CLARK, S.J. (2006) Issues concerning the design and analysis of comparative field experiments. Outlooks on Pest Management 17, 175-180.

CARRECK, N.L., BUTT, T.M., CLARK, S.J., IBRAHIM, L., ISGER, E.A., PELL, J.K. & WILLIAMS, I.H. (2007) Honey bees can disseminate a microbial control agent to more than one inflorescence pest of oilseed rape. Biocontrol Science and Technology 17, 179-191.

HEARD, M.S., CLARK, S.J., ROTHERY, P., PERRY, J.N., BOHAN, D.A., BROOKS, D.R., CHAMPION, G.T., DEWAR, A.M., HAWES, C., HAUGHTON, A.J., MAY, M.J., SCOTT, R.J., STUART, R.S., SQUIRE, G.R. & FIRBANK, L.G. (2006) Effects of successive seasons of genetically modified herbicide-tolerant maize cropping on weeds and invertebrates. Annals of Applied Biology 149, 249-254.

PAREJA, M., MORAES, M.C.B., CLARK, S.J., BIRKETT, M.A. & POWELL, W. (2007) Response of the aphid parasitoid Aphidius funebris to volatiles from undamaged and aphid-infested Centaurea nigra . Journal of Chemical Ecology 33, 695-710.

TKACZUK, C., SHAH, P.A., CLARK, S.J. & PELL, J.K. (2007) Influence of host plant on susceptibility of the aphid Acyrthosiphon pisum (Hemiptera: Aphididae) to the fungal pathogen Pandora neoaphidis (Zygomycetes: Entomophthorales). European Journal of Entomology 104, 205-210.

CLARK , S.J., ROTHERY, P., PERRY, J.N. & HEARD, M.S. (2007) Farm Scale Evaluations of genetically modified herbicide-tolerant crops: assessment of within-field variation and sampling methodology for arable weeds. Weed Research 47, 157 � 163.

BOHAN, D.A., HAWES, C., HAUGHTON, A.J., DENHOLM, I. , CHAMPION, G.T., PERRY, J.N. & CLARK, S.J. (2007) Statistical models to evaluate invertebrate-plant trophic interactions in arable systems. Bulletin of Entomological Research 97, 265-280.

CABRERA POCH, H.L., MANZANILLA LOPEZ, R.H. & CLARK, S.J. (2007) Ecotypes of the model legume Lotus japonicus vary in their interaction phenotypes with the root-knot nematode Meloidogyne incognita. Annals of Botany 99, 1223-1229.

HARRINGTON, R., CLARK , S.J., WELHAM, S.J., VERRIER, P.J., DENHOLM, C.H., HULL�, M., MAURICE, D., ROUNSEVELL, M.D., COCU, N., & EUROPEAN UNION EXAMINE CONSORTIUM. (2007) Environmental change and the phenology of European Aphids. Global Change Biology 13, 1550-1564.

STEPEK, G., CURTIS, R.H.C., KERRY, B.R., SHEWRY, P.R., CLARK, S.J., LOWE, A.E., DUCE, I.R., BUTTLE, D.J. & BEHNKE, J.M. (2007) Nematicidal effects of cysteine proteinases against sedentary parasitic nematodes. Parasitology 134, 1831-1838.

WEI, W., SCHULER, T.H., CLARK, S.J., STEWART, C.N. Jr & POPPY, G.M. (2008) Movement of transgenic plant-expressed Bt Cry1Ac proteins through high trophic levels. Journal of Applied Entomology 132, 1-11.

BROOKS, D.R., PERRY, J.N., CLARK, S.J., HEARD, M.S., FIRBANK, L.G., HOLDGATE, R., MASON, N.S., SHORTALL, C.R., SKELLERN, M.P. & WOIWOD, I.P. (2008) National-scale metacommunity dynamics of carabid beetles in UK farmland. Journal of Animal Ecology 77, 265-274.

ROY, H.E., BAVERSTOCK, J., WARE, R.L., CLARK, S.J., MAJERUS, M.E.N., BAVERSTOCK, K.E. & PELL, J.K. (2008) Intraguild predation of the aphid pathogenic fungus Pandora neoaphidis by the invasive coccinellid Harmonia axyridis. Ecological Entomology 33, 175-182.

LOGAN, J.G., BIRKETT, M.A., CLARK, S.J., POWERS, S.J., SEAL, N.J., WADHAMS, L.J., MORDUE (LUNTZ), A.J. & PICKETT, J.A. (2008) Identification of human-derived volatile chemicals that interfere with attraction of Aedes aegypti mosquitoes. J. Chemical Ecology 34, 308-322.

BAVERSTOCK, J., BAVERSTOCK, K.E., CLARK, S.J. & PELL, J.K. (2008) Transmission of Pandora neoaphidis in the presence of co-occurring arthropods. Journal of Invertebrate Pathology 98, 356-359.

BAVERSTOCK, J., CLARK, S.J. & PELL, J.K. (2008) Effect of seasonal abiotic conditions and field margin habitat on the activity of Pandora neoaphidis inoculum on soil. Journal of Invertebrate Pathology 97, 282-290.

GUZMAN-FRANCO, A.W., CLARK, S.J., ALDERSON, P.G. & PELL, J.K. (2008) Effect of temperature on the in vitro radial growth of Zoophthora radicans and Pandora blunckii, two co-occurring fungal pathogens of the diamondback moth Plutella xylostella. BioControl 53, 501-516.

SMITH, V., BOHAN, D.A., CLARK, S.J., HAUGHTON, A.J., BELL, J.R. & HEARD, M.S. (2008) Weed and invertebrate community compositions in arable farmland. Arthropod-Plant Interactions (APIS) 2, 21-30.

HAUGHTON, A.J., BOND, A.J., LOVETT, A.A., DOCKERTY, T., SUNNENBERG, G., CLARK, S.J., BOHAN, D.A., SAGE, R.B., MALLOTT, M.D., MALLOTT, V.E., CUNNINGHAM, M.D., RICHE, A.B., SHIELD, I.F., FINCH, J.W., TURNER, M.M. & KARP, A. (2009) A novel, integrated approach to assessing social, economic and environmental implications of changing rural land-use: a case study of perennial biomass crops. Journal of Applied Ecology 46, 315-322.

LOGAN, J.G., SEAL, N.J., COOK, J., STANCZYK, N.M., BIRKETT, M.A., CLARK, S.J., GEZAN, S.A., WADHAMS, L.J., PICKETT, J.A. & MORDUE (LUNTZ), A.J. (2009) Identification of human-derived volatile chemicals that interfere with attraction of the Scottish biting midge and their potential use as repellents. Journal of Medical Entomology 46, 208-219.

BAVERSTOCK, J., CLARK, S.J., ALDERSON, P.G. & PELL, J.K. (2009) Intraguild interactions between the entomopathogenic fungus Pandora neoaphidis and an aphid predator and parasitoid at the population scale. Journal of Invertebrate Pathology 102, 167-172.

DEVINE, G.J., ZAMORA PEREA, E., KILLEEN, G.F., STANCIL, J.D., CLARK, S.J. & MORRISON, A.C. (2009) Using adult mosquitoes to transfer insecticides to Aedes aegypti larval habitats. Proceedings of the National Academy of Sciences 106, 11530-11534.

JACOBS, J.H., CLARK, S.J., DENHOLM, I., GOULSON, D., STOATE, C. & OSBORNE, J.L. (2009) Pollination biology of fruit-bearing hedgerow plants and the role of flower-visiting insects in fruit-set. Annals of Botany 104, 1397 – 1404.

JACOBS, J.H., CLARK, S.J., DENHOLM, I., GOULSON, D., STOATE, C. & OSBORNE, J.L. (2009) Pollinator effectiveness and fruit set in common ivy, Hedera helix (Araliaceae). Arthropod-Plant Interactions 4, 19-28.

SALISBURY, A., CLARK, S.J., POWELL, W. & HARDIE, J. (2010) Susceptibility of six Lilium to damage by the lily beetle, Lilioceris lilii (Coleoptera; Chrysomelidae). Annals of Applied Biology 156, 103-110.

WOOD, C.R., CLARK, S.J., BARLOW, J.F. & CHAPMAN, J.W.(2010) Layers of nocturnal insect migrants at high-altitude: the influence of atmospheric conditions on their formation. Agricultural and Forest Entomology 12, 113 – 121.

SANTILLAN-GALICIA, M.T., BALL, B.V., CLARK, S.J. & ALDERSON, P.G. (2010) Transmission of deformed wing virus and slow paralysis virus to adult bees (Apis mellifera L.) by Varroa destructor. Journal of Apicultural Research and Bee World 49, 141-148.  

GUZMAN-FRANCO, A., CLARK, S.J., ALDERSON, P.G. & PELL, J.K. (2009) Competition and co-existence of Zoophthora radicans and Pandora blunckii, two co-occurring fungal pathogens of the diamondback moth, Plutella xylostella. Mycological Research 113, 1312-1321.

BAVERSTOCK, J., PORCEL, M., CLARK, S.J., COPELAND, J.E. & PELL, J.K. (2011) Potential value of the fibre nettle Urtica dioica as a resource for the nettle aphid Microlophium carnosum and its insect and fungal natural enemies. BioControl 56, 215-223.

GUZMAN-FRANCO, A.W., ATKINS, S.D., CLARK, S.J., ALDERSON, P.G. & PELL, J.K. (2011) Use of quantitative PCR to understand within-host competition between two entomopathogenic fungi. Journal of Invertebrate Pathology 107, 155-158.

BROOKS D.R., STORKEY, J., CLARK, S.J., FIRBANK, L.G., PETIT, S. & WOIWOD, I.P. (2012) Trophic links between functional groups of arable plants and beetles are stable at the national scale. Journal of Animal Ecology 81, 4-13.

BROOKS, D.R., BATER, J.E., CLARK, S.J., MONTEITH, D.T., ANDREWS, C., CORBETT, S.J., BEAUMONT, D.A. & CHAPMAN, J.W. (2012) Large carabid beetle declines in a United Kingdom monitoring network increases evidence for a widespread loss in insect biodiversity. Journal of Applied Ecology 49, 1009-1019. (doi: 10.1111/j.1365-2664.2012.02194.x)

GILKS, W.R., WELHAM, S.J., WANG, J., CLARK, S.J. & KING, G.J. (2012) Three-point appraisal of genetic linkage maps. Theoretical and Applied Genetics 125, 1393-1402.

CHAMBERLAIN, K., BRIENS, M., JACOBS, J.H., CLARK, S.J., PICKETT, J.A. & WOODCOCK, C.M. (2012) Use of honey bees (Apis mellifera L.) to detect the presence of Mediterranean fruit fly (Ceratitis capitata Wiedemann) larvae in Valencia oranges. Journal of the Science of Food and Agriculture 92, 2050-2054.

BAVERSTOCK, J., TORRANCE, M.T., CLARK, S.J. & PELL, J.K. (2012) Mesocosm experiments to assess the transmission of Pandora neoaphidis within simple and mixed field margins and over the crop-margin interface. Journal of Invertebrate Pathology 110, 102-107.

MORALES-VIDAL, S., ALATORRE-ROSAS, R., CLARK, S.J., PELL, J.K.  & GUZMAN-FRANCO, A.W. (2013) Competition between isolates of Zoophthora radicans co-infecting Plutella xylostella populations. Journal of Invertebrate Pathology 113, 137-145.

OSBORNE, J.L., SMITH, A., CLARK, S.J., REYNOLDS, D.R., BARRON, M.C. & REYNOLDS, A.M. (2013) The ontogeny of bumblebee flight trajectories: from naïve explorers to experienced foragers. PLoS ONE (doi:10.1371/journal.pone.0078681)