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The brown locust Locustana pardalina is a major agricultural pest in southern Africa, with populations periodically reaching plague proportions. Manag...
Read moreFew studies have addressed how density-dependent and density-independent regulation of population growth and abundance varies among habitats for a spe...
Read moreThe zebra mussel Dreissena polymorpha is a well-known biofouler, having potentially serious impacts on freshwater-dependent industries. Chemical treat...
Read moreSorghum cv. Funk's 522 was grown in 1978 followed by rye cv. Abruzzi under conventional tillage (CT) (disc ploughing) or no tillage (NT). Soyabean cv....
Read moreDescribes a study in Bleans Woods National Nature Reserve, north-east Kent, to investigate the effects of seasonal and temporal variations in soil tem...
Read moreA new method for determining the age of grasstrees (Xanthorrhoea spp and Kingia australis) is proposed. It is based on annual fluctuations in stem dia...
Read moreHoneybee colony weight (C) was related to the weight of honey stored (H), but this relationship was not linear because of the increased population of ...
Read moreEstimates of water used by irrigated cotton crops, obtained by micrometeorological methods, soil water sampling and lysimetry, were related to Penman'...
Read moreMean adult bee populations were 18 000 in late May, 37 000 in early June and 13 000 in late September, while mean brood populations were 15 000 in lat...
Read moreThe population dynamics of B. globosus were studied at 5 river sites in the Zimbabwe highveld for between 4 and 28 months. Adult snail abundance, recr...
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