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The effects of competition between ecologically contrasting populations from acid and calcareous soils were investigated in a pot experiment. The effe...
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Read moreThe area, subjected to pressure by pedestrians and vehicles, was divided into 3 zones according to the intensity of wear. Significant differences in t...
Read moreThe following is based largely on the author's summary. A study was made in eastern England in 1969-70 on aphidophagous Syrphids and Syrphid predation...
Read moreThe following is based largely on the authors' summary. The ecology of Aphis craccivora Koch and subterranean-clover stunt virus [cf. RAE A 58 646] wa...
Read moreFields in southern England were sampled over seven years to assess populations of eggs and larvae of Hylemya (Leptohylemyia) coarctata (Fall.) and of ...
Read moreThe following is based partly on the author's summary. Cattle egrets (Ardeola ibis) feeding in dairy-cattle pastures in the south-western Cape Provinc...
Read moreThe following is virtually the author's summary of this second part of a series [cf. RAE A 59 2659]. Experiments on saplings of lime (Tilia) under con...
Read moreThe following is virtually the author's summary. Dipterous eggs laid in the soil round the bases of plants in market-garden crops of cabbage and cauli...
Read moreThe following is virtually the author's summary of this account of investigations on Guadalcanal (Solomon Is.) based on observations by the author and...
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