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Rodent numbers were estimated by trapping (on the ground) in 8 habitat types representing the major land uses in an area where primarily tropical rain...
Read moreThe tritium method was used to measure the transpiration of 20 trees in a rain forest in the Amazon Territory of Venezuela. Transpiration rates ranged...
Read moreSeedlings and young trees of Pinus sylvestris were grown in outdoor fumigation chambers at 5 and 150 mu g SO2/m3 (approx.). The higher SO2 concn. redu...
Read moreThe av. daily deposition velocity of SO2 onto a canopy of pine [Pinus sylvestris/P. nigra var. maritima] in Nottinghamshire, UK, in a dry summer (1975...
Read moreD.b.h., canopy status, stem form, crown form and climber infestation were measured at intervals over a 14-yr period for trees of Khaya ivorensis and S...
Read moreThe populations of Operophtera brumata (L.) on 8 cider apple trees of 4 cultivars were monitored from October 1972 until May 1975 in Western England. ...
Read moreThe value of a temperature integrator was demonstrated when determining the development of the parasite Aphidius matricariae Hal. on the host Myzus pe...
Read moreTwo plots, each of 240 broom (Sarothamnus scoparius) seedlings were planted in England in March 1966. For 11 years, one plot was sprayed 1-3 times a y...
Read moreThe application of dimethoate to winter wheat in southern England to control cereal aphids (mainly Sitobion avenae (F.)) caused changes in the numbers...
Read moreA simplified method for the estimation of the intrinsic rate of natural increase (rm) of aphids is proposed. Having determined the prereproductive tim...
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