Bardgett, R.D. (2005) The biology of soil: a community and ecosystem approach. 242 pp. Oxford, Oxford University Press.
Bernklau, E.J. & Bjostad, L.B. (1998a) Behavioral responses of first-instar western corn rootworm (Coleoptera: Chrysomelidae) to carbon dioxide in a glass bead bioassay. Journal of Economic Entomology 91, 444–456.
Bernklau, E.J. & Bjostad, L.B. (1998b) Reinvestigation of host location by western corn rootworm larvae (Coleoptera: Chrysomelidae): CO 2 is the only volatile attractant. Journal of Economic Entomology 91, 1331–1340.
Bernklau, E.J., Fromm, E.A. & Bjostad, L.B. (2004) Disruption of host location of western corn rootworm larvae (Coleoptera: Chrysomelidae) with carbon dioxide. Journal of Economic Entomology 97, 330–339.
Blossey, B. & Hunt-Joshi, T.R. (2003) Belowground herbivory by insects: influence on plants and aboveground herbivores. Annual Review of Entomology 48, 521–547.
Brown, V.K. & Gange, A.C. (1990) Insect herbivory below ground. Advances in Ecological Research 20, 1–58.
Chou, Y.M., Polansky, A.M. & Mason, R.L. (1998) Transforming non-normal data to normality in statistical process control. Journal of Quality Technology 30, 133–141.
Doerr, V.A.J. & Doerr, E.D. (2004) Fractal analysis can explain individual variation in dispersal search paths. Ecology 85, 1428–1438.
Dusenbery, D.B. (1992) Sensory ecology: how organisms acquire and respond to information. 558 pp. New York, W.H. Freeman.
Gollany, H.T., Schumacher, T.E., Rue, R.R. & Liu, S.Y. (1993) A carbon dioxide microelectrode for in situ CO 2 measurement. Microchemical Journal 48, 42–49.
Gregory, P.J. (1988) Growth and functioning of plant roots. pp. 113–167 in Wild, A. (Ed.) (1988) Russell's soil conditions and plant growth. Harlow, Longman.
Halley, J.M., Hartley, S., Kallimanis, A.S., Kunin, W.E., Lennon, J.J. & Sgardelis, S.P. (2004) Uses and abuses of fractal methodology in ecology. Ecology Letters 7, 254–271.
Harrison, R.D., Gardner, W.A., Tollner, W.E. & Kinard, D.J. (1993) X-Ray computed-tomography studies of the burrowing behavior of 4th-instar Pecan weevil (Coleoptera, Curculionidae). Journal of Economic Entomology 86, 1714–1719.
Hatch, D.J. & Murray, P.J. (1994) Transfer of nitrogen from damaged roots of white clover (Trifolium repens L.) to closely associated roots on intact perennial ryegrass (Lolium perenne L.). Plant and Soil 166, 181–185.
Hewitt, E.J. (1966) Sand and water culture methods used in the study of plant nutrition. Technical Communication of the Commonwealth Agricultural Bureau of Horticultural and Plantation Crops, 22.
Johnson, S.N. & Gregory, P.J. (2006) Chemically-mediated host-plant location and selection by root-feeding insects. Physiological Entomology 13, 1–13.
Johnson, S.N., Gregory, P.J., Murray, P.J., Zhang, X. & Young, I.M. (2004a) Host plant recognition by the root-feeding clover weevil, Sitona lepidus (Coleoptera: Curculionidae). Bulletin of Entomological Research 94, 433–439.
Johnson, S.N., Read, D.B. & Gregory, P.J. (2004b) Tracking larval insect movement within soil using high resolution X-ray microtomography. Ecological Entomology 29, 117–122.
Johnson, S.N., Gregory, P.J., Greenham, J.R., Zhang, X. & Murray, P.J. (2005) Attractive properties of an isoflavonoid found in white clover root nodules on the clover root weevil. Journal of Chemical Ecology 31, 2223–2229.
Jones, O.T. & Coaker, T.H. (1977) Orientated responses of carrot fly larvae, Psila rosae, to plant odours, carbon dioxide and carrot root volatiles. Physiological Entomology 2, 189–197.
Mandelbrot, B.B. (1967) How long is the coast of Britain? Statistical self-similarity and fractional dimension. Science 156, 636–638.
Mortimer, S.R., van der Putten, W.H., Brown, V.K. (1999) Insect and nematode herbivory under ground: interactions and role in vegetation succession. pp. 205–238 in Olff, H., Brown, V.K. & Drent, R.H. (Eds) Herbivores: between plants and predators. Oxford, Blackwell Science.
Nams, V.O. (2005) Using animal movement paths to measure response to spatial scale. Oecologia 143, 179–188.
Rasmann, S., Köllner, T.G., Degenhardt, J., Hiltpold, I., Toepfer, S., Kuhlmann, U., Gershenzen, J. & Turlings, T.C.J. (2005) Recruitment of entomopathogenic nematodes by insect-damaged maize roots. Nature 434, 732–737.
Schadler, M., Alphei, J., Scheu, S., Brandl, R. & Auge, H. (2004) Resource dynamics in an early-successional plant community are influenced by insect exclusion. Soil Biology and Biochemistry 36, 1817–1826.
Sheppard, S.K. & Lloyd, D. (2002) Direct mass spectrometric measurement of gases in soil monoliths. Journal of Microbiological Methods 50, 175–188.
Spike, B.P. & Tollefson, J.J. (1991) Yield response of corn subjected to Western corn rootworm (Coleoptera, Chrysomelidae) infestation and lodging. Journal of Economic Entomology 84, 1585–1590.
Treonis, A.M., Grayston, S.J., Murray, P.J. & Dawson, L.A. (2005) Effects of root feeding, cranefly larvae on soil microorganisms and the composition of rhizosphere solutions collected from grassland plants. Applied Soil Ecology 28, 203–215.
Van der Putten, W.H., Vet, L.E.M., Harvey, J.A., Wackers, F.L. (2001) Linking above- and belowground multitrophic interactions of plants, herbivores, pathogens, and their antagonists. Trends in Ecology and Evolution 16, 547–554.
Wardle, D.A., Bardgett, R.D., Klironomos, J.N., Setala, H., van der Putten, W.H., Wall, D.H. (2004) Ecological linkages between aboveground and belowground biota. Science 304, 1629–1633.