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article/chapitre/communication
J. Holland ; L. Winder ; J. Perry | 1999
article/chapitre/communication
J. Perry ; L. Winder ; J. Holland ; R. Alston | 1999A new index and four new graphical displays, termed ''red-blue'' plots, are presented to study and measure clustering in spatially referenced count data. The index can detect clusters in the form of patches, comprising several nearby large count[...]
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ouvrage
Carabid beetles exist in almost every type of habitat ranging from tropical rainforests to semi-arid deserts. In temperate regions they are usually the most abundant insects of cultivated land and consequently are frequently monitored as environ[...]
article/chapitre/communication
L. Winder ; J. Perry ; J. Holland | 1999The spatial and temporal distribution of the grain aphid Sitobion avenae F. (Homoptera: Aphididae) was studied within a field of winter wheat during the summer of 1996. Sampling was done using four nested grids comprising 133 locations. Analysis[...]
article/chapitre/communication
J. Holland ; J. Perry ; L. Winder | 1999The within-field spatial distribution of some common farmland arthropods from the Carabidae, Araneae and Collembola was assessed using two-dimensional grids of pitfall traps distributed across whole winter wheat fields. In the first year, the ex[...]
