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The effects of increased nutrient and organic loading on a community dominated by submersed macrophytes and gastropods were investigated in a drainage...
Read moreThe numbers of dead and live Sitobion avenae falling to the ground in a wheat crop in 1988-89 in the UK were estimated. The estimates showed that more...
Read moreHerbivorous insect communities were studied on oak (Quercus petraea) trees in pure stands of oak or in mixtures with alder (Alnus glutinosa), pine (Pi...
Read moreAn investigation was made of factors affecting the distribution and abundance of insect herbivores on oak (Quercus petraea) in pure stands or in mixtu...
Read more1. Crop damage caused by pest bird species is an economic problem in agricultural areas world-wide. Previous research in North America has focused on ...
Read moreThe influence of plot size in assessing the impact of pesticide treatment on invertebrate populations in cereal fields was investigated in winter whea...
Read moreDistribution and phenology of the beetles was studied at an infestation centre in a wood dominated by Ulmus glabra in Scania, S. Sweden, in 1983-85 us...
Read morePost-dispersal seed losses in annual arable weed species are poorly quantified, but may be of significance for natural population control, especially ...
Read morePollination of crops depends on local agricultural management and the quality of adjacent habitats. Lowland coffee Coffea canephora, is an important t...
Read moreCacao has been grown on a large scale round Popondetta in the Northern District of Papua New Guinea since 1958. Pest problems were present in the area...
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