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Sample size estimates for monitoring population densities of Tetranychus urticae and Panonychus ulmi in apple orchards in South Africa were derived fr...
Read moreMonthly totals of arthropods found killed by pathogenic fungi in collections from 5 X 4 quadrats in three forest types in Ghana were shown to be inver...
Read moreAdults of Hylemya (Erioischia) brassicae (Bch.) labelled with 32P were released 24 m from a plot of cabbage and recaptured with water traps. The respo...
Read moreThe nesting success of the sparrowhawk (Accipiter nisus) in and near arable areas in Britain has declined since 1947, owing to increased egg-breakage ...
Read moreData on changes in numbers of 31 species of butterfly in the UK in 1976-86 were used to investigate associations between relative abundance and weathe...
Read moreA model for the growth and development of cassava under pest-free conditions, as modified by weather, soil nitrogen and water, is described. The model...
Read moreLife tables for populations of Hylemya (Erioischia) brassicae (Bch.) on cabbage crops in Canada [cf. RAE/A 60, 538] and England [50, p. 286] are analy...
Read moreWhen Callosobruchus maculatus (F.) was provided with the seeds of several varieties of cowpea (Vigna unguiculata) in the laboratory in the UK and was ...
Read moreThe increase in numbers of Auchenorhyncha following cutting of an Arrhenatherum grassland were recorded in a field experiment at a nature reserve in e...
Read moreMathematical models for birth and death processes in local populations (within a local patch), and for migration between local patches in a heterogene...
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