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Professor James Bell's Outputs (98)

Seasonal migration to high latitudes results in major reproductive benefits in an insect (2012)
Journal Article
Chapman, J. W., Bell, J. R., Burgin, L. E., Reynolds, D. R., Pettersson, L. B., Hill, J. K., …Thomas, J. A. (2012). Seasonal migration to high latitudes results in major reproductive benefits in an insect. Proceedings of the National Academy of Sciences of the United States of America, 109(37), 14924-14929. https://doi.org/10.1073/pnas.1207255109

Little is known of the population dynamics of long-range insect migrants, and it has been suggested that the annual journeys of billions of nonhardy insects to exploit temperate zones during summer represent a sink from which future generations seldo... Read More about Seasonal migration to high latitudes results in major reproductive benefits in an insect.

Climatic change is advancing the phenology of moth species in Ireland (2012)
Journal Article
O’Neill, B. F., Bond, K., Tyner, A., Sheppard, R., Bryant, T., Chapman, J., …Donnelly, A. (2012). Climatic change is advancing the phenology of moth species in Ireland. Entomologia Experimentalis et Applicata, 143(1), 74-88. https://doi.org/10.1111/j.1570-7458.2012.01234.x

Recent increases in global temperatures have contributed to advancing phenology of plants and animals. These increases in temperature have been shown to affect the phenological phases (phenophases) of plants and birds in Ireland, but less is known ab... Read More about Climatic change is advancing the phenology of moth species in Ireland.

Putting the brakes on a cycle: bottom-up effects damp cycle amplitude (2012)
Journal Article
Bell, J. R., Burkness, E. C., Milne, A. E., Onstad, D. W., Abrahamson, M., Hamilton, K. L., & Hutchison, W. D. (2012). Putting the brakes on a cycle: bottom-up effects damp cycle amplitude. Ecology Letters, 15(4), 310-318. https://doi.org/10.1111/j.1461-0248.2011.01739.x

Pest population density oscillations have a profound effect on agroecosystem functioning, particularly when pests cycle with epidemic persistence. Here, we ask whether landscape-level manipulations can be used to restrict the cycle amplitude of the E... Read More about Putting the brakes on a cycle: bottom-up effects damp cycle amplitude.

Suction sampling as a significant source of error in molecular analysis of predator diets (2011)
Journal Article
King, R., Davey, J., Bell, J., Read, D., Bohan, D., & Symondson, W. (2012). Suction sampling as a significant source of error in molecular analysis of predator diets. Bulletin of Entomological Research, 102(3), 261 - 266. https://doi.org/10.1017/S0007485311000575

The molecular detection of predation is a fast growing field, allowing highly specific and sensitive detection of prey DNA within the gut contents or faeces of a predator. Like all molecular methods, this technique is prone to potential sources of er... Read More about Suction sampling as a significant source of error in molecular analysis of predator diets.

Generalist predators disrupt parasitoid aphid control by direct and coincidental intraguild predation (2011)
Journal Article
Traugott, M., Bell, J., Raso, L., Sint, D., & Symondson, W. (2012). Generalist predators disrupt parasitoid aphid control by direct and coincidental intraguild predation. Bulletin of Entomological Research, 102(2), 239 - 247. https://doi.org/10.1017/s0007485311000551

Generalist predators and parasitoids are considered to be important regulators of aphids. The former not only feed on these pests, but might also consume parasitoids at all stages of development. This direct or coincidental interference affects the n... Read More about Generalist predators disrupt parasitoid aphid control by direct and coincidental intraguild predation.

The trait and host plant ecology of aphids and their distribution and abundance in the United Kingdom (2011)
Journal Article
Bell, J. R., Taylor, M. S., Shortall, C. R., Welham, S. J., & Harrington, R. (2012). The trait and host plant ecology of aphids and their distribution and abundance in the United Kingdom. Global Ecology and Biogeography, 21(4), 405-415. https://doi.org/10.1111/j.1466-8238.2011.00685.x

Aim We characterized the annual populations of 170 aphid species by their log abundance, site occupancy and site continuity (i.e. the persistence of species in time) and used this information to make predictions about groups of species that displayed... Read More about The trait and host plant ecology of aphids and their distribution and abundance in the United Kingdom.

Trophic level asynchrony in rates of phenological change for marine, freshwater and terrestrial environments (2010)
Journal Article
THACKERAY, S. J., SPARKS, T. H., FREDERIKSEN, M., BURTHE, S., BACON, P. J., BELL, J. R., …WANLESS, S. (2010). Trophic level asynchrony in rates of phenological change for marine, freshwater and terrestrial environments. Global Change Biology, 16(12), 3304-3313. https://doi.org/10.1111/j.1365-2486.2010.02165.x

Recent changes in the seasonal timing (phenology) of familiar biological events have been one of the most conspicuous signs of climate change. However, the lack of a standardized approach to analysing change has hampered assessment of consistency in... Read More about Trophic level asynchrony in rates of phenological change for marine, freshwater and terrestrial environments.

Multiplex reactions for the molecular detection of predation on pest and nonpest invertebrates in agroecosystems (2010)
Journal Article
KING, R. A., MORENO-RIPOLL, R., AGUSTÍ, N., SHAYLER, S. P., BELL, J. R., BOHAN, D. A., & SYMONDSON, W. O. (2011). Multiplex reactions for the molecular detection of predation on pest and nonpest invertebrates in agroecosystems. Molecular Ecology Resources, 11(2), 370-373. https://doi.org/10.1111/j.1755-0998.2010.02913.x

Species- and group-specific PCR primers were developed to study predation on pest and nonpest invertebrate species by generalist carabid predators in agroecosystems. To ensure the amplification of degraded DNA in predator gut samples, amplicons were... Read More about Multiplex reactions for the molecular detection of predation on pest and nonpest invertebrates in agroecosystems.

Prey choice by carabid beetles feeding on an earthworm community analysed using species- and lineage-specific PCR primers (2010)
Journal Article
KING, R. A., VAUGHAN, I. P., BELL, J. R., BOHAN, D. A., & SYMONDSON, W. O. (2010). Prey choice by carabid beetles feeding on an earthworm community analysed using species- and lineage-specific PCR primers. Molecular Ecology, 19(8), 1721-1732. https://doi.org/10.1111/j.1365-294X.2010.04602.x

The carabid beetle Pterostichus melanarius is a major natural enemy of pests, such as aphids and slugs in agricultural systems. Earthworms are a dominant non-pest component of the diet of P. melanarius which help sustain the beetles during periods wh... Read More about Prey choice by carabid beetles feeding on an earthworm community analysed using species- and lineage-specific PCR primers.

The GAMes aphids play (2009)
Conference Proceeding
Bell, J., Harrington, R., Welham, S., Clark, S., & Pickup, J. (2009). The GAMes aphids play.

BICCO-Net: the Biodiversity Impacts of Climate Change Observation Network (2009)
Presentation / Conference
Chamberlain, D., Eglington, S., Haysom, K., Roy, D., Willis, S., Broome, A., …Bell, J. R. (2009, June). BICCO-Net: the Biodiversity Impacts of Climate Change Observation Network. Paper presented at ZSL Biodiversity Monitoring and Conservation Symposium, London, UK

Endoparasitism in cereal aphids: molecular analysis of a whole parasitoid community (2008)
Journal Article
TRAUGOTT, M., BELL, J., BROAD, G., POWELL, W., VAN VEEN, F., VOLLHARDT, I., & SYMONDSON, W. (2008). Endoparasitism in cereal aphids: molecular analysis of a whole parasitoid community. Molecular Ecology, 17(17), 3928-3938. https://doi.org/10.1111/j.1365-294X.2008.03878.x

Insect parasitoids play a major role in terrestrial food webs as they are highly diverse, exploit a wide range of niches and are capable of affecting host population dynamics. Formidable difficulties are encountered when attempting to quantify host–p... Read More about Endoparasitism in cereal aphids: molecular analysis of a whole parasitoid community.

Beneficial links for the control of aphids: the effects of compost applications on predators and prey (2008)
Journal Article
Bell, J. R., Traugott, M., Sunderland, K. D., Skirvin, D. J., Mead, A., Kravar-Garde, L., …Symondson, W. O. (2008). Beneficial links for the control of aphids: the effects of compost applications on predators and prey. Journal of Applied Ecology, 45(4), 1266-1273. https://doi.org/10.1111/j.1365-2664.2008.01479.x

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Polyphagous predators, such as spiders and beetles, perform a fundamental ecosystem service as regulators of agricultural pests, particularly aphids. They are most effective when they colonize the crop before the pest has reached its exponential g... Read More about Beneficial links for the control of aphids: the effects of compost applications on predators and prey.

Do functional traits improve prediction of predation rates for a disparate group of aphid predators? (2008)
Journal Article
Bell, J., Mead, A., Skirvin, D., Sunderland, K., Fenlon, J., & Symondson, W. (2008). Do functional traits improve prediction of predation rates for a disparate group of aphid predators?. Bulletin of Entomological Research, 98(6), 587 - 597. https://doi.org/10.1017/s0007485308005919

Aphid predators are a systematically disparate group of arthropods united on the basis that they consume aphids as part of their diet. In Europe, this group includes Araneae, Opiliones, Heteroptera, chrysopids, Forficulina, syrphid larvae, carabids,... Read More about Do functional traits improve prediction of predation rates for a disparate group of aphid predators?.

Weed and invertebrate community compositions in arable farmland (2008)
Journal Article
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, 2, Article 21-30. https://doi.org/10.1007/s11829-007-9027-y

A large proportion of the land surface area of Great Britain (GB) is used for arable agriculture. Due to changes in farm management practices over the last 50 years, there have been marked declines in the abundance of arable wildlife groups of conser... Read More about Weed and invertebrate community compositions in arable farmland.

Molecular detection of predation on earthworms (2007)
Presentation / Conference
King, R., Bell, J., Bohan, D., & Symondson, W. (2007, September). Molecular detection of predation on earthworms. Paper presented at UK and Irish Earthworm Researchers' Meeting, London, UK

Ballooning dispersal in arthropod taxa: conditions at take-off (2007)
Journal Article
Reynolds, A. M., Bohan, D. A., & Bell, J. R. (2007). Ballooning dispersal in arthropod taxa: conditions at take-off. Biology Letters, 3(3), https://doi.org/10.1098/rsbl.2007.0109

We have solved a long-standing and seemingly paradoxical set of questions that relate to the conditions which govern spider ballooning. We show that observations of spider ballooning excursions are best explained by meteorological conditions which ma... Read More about Ballooning dispersal in arthropod taxa: conditions at take-off.

Ballooning dispersal in arthropod taxa with convergent behaviours: dynamic properties of ballooning silk in turbulent flows (2006)
Journal Article
Reynolds, A., Bohan, D., & Bell, J. (2006). Ballooning dispersal in arthropod taxa with convergent behaviours: dynamic properties of ballooning silk in turbulent flows. Biology Letters, 2(3), 371–373. https://doi.org/10.1098/rsbl.2006.0486

We present a new model of ballooning behaviour in arthropods in which draglines are regarded as being extendible and completely flexible. Our numerical simulations reveal that silk draglines within turbulent flows can become twisted and stretched int... Read More about Ballooning dispersal in arthropod taxa with convergent behaviours: dynamic properties of ballooning silk in turbulent flows.