A - Papers appearing in refereed journals
Winder, L., Alexander, C. J., Holland, J. M., Woolley, C. and Perry, J. N. 2001. Modelling the dynamic spatio-temporal response of predators to transient prey patches in the field. Ecology Letters. 4 (6), pp. 568-576.
|Authors||Winder, L., Alexander, C. J., Holland, J. M., Woolley, C. and Perry, J. N.|
The spatio-temporal dynamics of two aphid species (Metopolophium dirhodum and Sitobion arenae) and a generalist predator (Pterostichus melanarius) were observed in a field-scale study using a grid of 256 sampling locations with a 12-m spacing. Using Spatial Analysis by Distance Indices we demonstrate that populations show ephemeral spatial pattern at the field scale. We observed a positive, lagged beetle response to this aphid pattern; Conversely, the aphids displayed a negative, lagged response to beetle spatial pattern. Examination of the local structure of the spatio-temporal dynamics revealed a strong response by the beetle population to aphid patches. The temporal structure of spatial associations between the species shows a strong correspondence with those from a conceptual model of predator-prey spatial interaction. The spatially coupled dynamics were sufficiently strong for the predator to have a negative effect on the intrinsic rate of increase of their prey.
|Year of Publication||2001|
|Journal citation||4 (6), pp. 568-576|
|Digital Object Identifier (DOI)||doi:10.1046/j.1461-0248.2001.00269.x|
|Open access||Published as non-open access|
|Funder project or code||433|
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