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Understanding how resource diversification affects ecological interactions, food web structure and ecosystem functioning is essential in both fundamen...Read more
Agricultural land use threatens ecosystem services such as biological control by natural enemies because of simplification of habitat structure and in...Read more
At Rothamsted in southern England from 1973 to 1977, alate cereal aphids (Sitobion avenae (F.), Metopolophium dirhodum (Wlk.), and in some years S. fr...Read more