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The ability of Harpalus rufipes (Deg.) to feed on aphids was studied in the laboratory in the UK and compared with evidence of predation on aphids in ...
Read moreLand clearing for irrigated agriculture in the Sudan clay plains is urgently needed because the Roseires Dam is to be completed in 1967. Two different...
Read moreAlthough invasions by alien plants are major threats to the biodiversity of natural habitats, individual habitats vary considerably in their susceptib...
Read moreDetailed floristic records from 12 mires on 3 Suffolk fens were gathered in 1959 and 1991. The data were analysed using tabulation and ordination to e...
Read moreThe influence of annual and seasonal (summer vs. winter) rainfall variability and of different seasons and systems of sheep grazing, including complet...
Read moreWetland ecosystems throughout the world are threatened by drainage and intensification of agriculture. Consequently, many wetland species of conservat...
Read moreAnimal pollination is important for more than 75% of agricultural crops, including coffee, whose productivity can increase with adequate pollination. ...
Read moreNatural enemies of plant pathogens might play an important role in controlling plant disease levels in natural and agricultural systems. Yet, plant pa...
Read moreThe responses of herbaceous vegetation on upland steppe of Yellowstone National Park's N. winter rangeland to winter grazing by elk were investigated ...
Read moreWell-informed management of harvested species requires understanding how changing ecological conditions affect demography and population dynamics, inf...
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