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The population behaviour of Panolis flammea was observed to determine whether the association between outbreaks and trees growing in deep peat sites i...
Read moreThe routes of transfer of fluoride to invertebrates and the relative fluoride loading of different body parts were studied in larvae of Diprion pini. ...
Read moreA number of insect vectors of plant-virus diseases make only transitory visits to the crop in which the economic effects of the disease are important....
Read moreEffects of the roadside atmosphere were investigated by placing pots of Lolium perenne 0.5, 1.5, 3.5 or 9 m from the roadside. At each distance, pots ...
Read moreThe performance of Lolium perenne plants grown in roadside soil in the absence of roadside atmospheric conditions was studied. Significantly fewer pla...
Read moreThe rate of deforestation in West Africa was around 2% (12 000 km2) per annum during the 1980s, and recent evidence from Cameroon suggests that the ra...
Read moreThe following is virtually the author's summary. The investigation described de-fines the limits of temperature and humidity beyond which the grain mi...
Read moreThe following is based almost entirely on the author's summary. In investigations in southern England, nearly twice as many eggs were laid by females ...
Read moreA recent reappraisal of the evidence of the effects of cyclodiene insecticides on sparrowhawks Accipiter nisus and kestrels Falco tinnunculus in Brita...
Read morePopulation differentiation in the collembolan Orchesella cincta under the influence of metal soil pollution was studied by measuring Pb and Cd excreti...
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