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The density of Pteronia pallens (Asteraceae), a shrub toxic to sheep, increased in Karoo rangeland at the expense of a congeneric palatable shrub, P. ...
Read morePopulations of the hepialid Wiseana cervinata on 0.8-ha plots in pastures in New Zealand appeared to be regulated by density-dependent recruitment, po...
Read morePesticides applied to seeds before sowing may present a high risk to seed-eating birds. Some of these chemicals are highly toxic but are avoided by ca...
Read moreIn an apple orchard in south-western England where tits (Parus spp.) ate 95% of the overwintering larvae of Cydia pomonella (L.), only 35% of the surv...
Read moreIn citrus orchards in Trinidad, the presence of the ant Azteca sp. on a tree was negatively correlated with the presence of nests of the termite Nasut...
Read moreThe following is virtually the authors' summary. About 1, 000 kg English wheat was stored, in two equal bulks, in a damp unheated brick building in so...
Read moreThe factors that maintain the mosaic distribution pattern of dominant ants in cacao plantations in Ghana were investigated in a series of observations...
Read moreThe distribution of ants in a Ghana cacao plantation [cf. preceding abstract] was investigated in order to gain information for an integrated control ...
Read moreCertain species of dominant ants were selectively eliminated from different subplots in order to elucidate the influence of ants and other factors on ...
Read moreAs part of a wider study on the ecology of cereal crops, preliminary studies were carried out in Britain on the nocturnal activity and vertical distri...
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