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There is a lack of information concerning input and output of nutrients in savanna ecosystems (llanos). The south-western Venezuelan llanos are season...Read more
Biodiversity cannot always be conserved. Economic development activities can result in biodiversity losses, but also increase human well-being, so tra...Read more
An outline balance sheet for water, Na, K, Ca, P and N was constructed for a stream catchment of 83 ha. The catchment surface comprised 11-20% eroding...Read more
An integrated impact assessment methodology is developed and applied to estimate current and future economic impacts of flood risk in Italy under clim...Read more
Soil erosion losses and erosion control techniques in agroecosystems on the Pacific coast of Jalisco, Mexico were studied for 2 years under 7 manageme...Read more
Phosphorus inputs and losses are calculated for contrasting farming systems: cereals were a major product in all systems. In typical modern British wh...Read more
Aquaculture is replacing capture fisheries in supplying the world with dietary protein. Although disease is a major threat to aquaculture production, ...Read more
In investigations in cider-apple orchards in southern England in winter 1971-73, groups of up to 30 larvae of Cydia pomonella (L.) were allowed to spi...Read more
The numbers of Brevicoryne brassicae and its parasites and predators in a crop of brussels sprouts were counted during a season. The results were grou...Read more