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Two malathion-resistant strains of the stored-grain pest Oryzaephilus surinamensis (L.) were cultured in the laboratory in the UK in the absence of in...
Read moreThe following is based on the authors' summary. Under favourable physical conditions, populations of Acarus siró L. reared on sterilised wheat-germ fl...
Read moreDescribes the theory, construction and calibration of a new type of diffusion porometer in which the leaf is placed inside the porometer chamber; it i...
Read moreThe production of current season growth by Coleogyne ramosissima was determined by length measurement in Sept. when the twigs were dormant. Percentage...
Read moreIntraspecific variation in susceptibility to simazine was examined in 46 different populations of Senecio vulgaris collected from various fruit growin...
Read moreThe aquatic plants in this study were Ruppia spp. which occur at shallow depths, Chara spp. at intermediate depths and Potamogeton pectinatus, Myrioph...
Read moreDiurnal lepidopteran and vegetational communities were surveyed on 18 reclaimed coal surface mines and 5 hardwood sites in Virginia during 1992 and 19...
Read moreTanzania faces an acute shortage of timber that can only be met by private tree growers, at least in the short to medium term. The Tanzanian governmen...
Read moreEnglish Nature and the other statutory conservation agencies in the UK are monitoring designated sites, including SSSIs, according to an agreed framew...
Read moreData is presented on the distribution, extent, conservation status and management of MG4 flood plain meadows. Ninety two sites have been identified co...
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