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Residues of DDE in kestrel eggs collected near Ithaca, New York, averaged 35, 42, 33 and 37 p.p.m. in 1969, 1970, 1971 and 1972, respectively. Based o...
Read morePitfall trapping in sugar-beet crops in East Anglia in 1970 and 1971 showed that Carabidae were much more active and abundant than other epigeic preda...
Read moreSince 2014, the Crop Protection Service Niedersachsen has carried out joint experiments on weed control with special consideration of water protection...
Read moreThe weed vegetation and seed bank were studied at the initiation (1979) and after the first cycle (1983) of a 4-course crop rotation (oats, clover [Tr...
Read moreThe following is substantially the authors' summary. Investigations on the diurnal activity and seasonal distribution of Glossina morsitans orientalis...
Read moreMycorrhizas form a critical link between above-ground plants and the soil system by influencing plant nutrition, nutrient cycling and soil structure. ...
Read moreAcacia nilotica is a spinescent woody legume that has become highly invasive in several parts of the world, including Australia where it has been decl...
Read moreThe effect of livestock on African rangelands has been a major focus of recent research, but little attention has been paid to the way livestock affec...
Read moreThe impacts of habitat disturbance on biodiversity within tropical forests are an area of current concern but are poorly understood and difficult to p...
Read moreNumbers of European hares Lepus europaeus have declined throughout Europe as a result of agricultural intensification. Ecological research to inform a...
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