Farming practices change food web structures in cereal aphid–parasitoid–hyperparasitoid communities
نویسندگان
چکیده
منابع مشابه
Guide to good farming practices for animal production food safety.
Food safety is now universally recognised as a public health priority. It requires a global approach, from production to consumption. This article addresses the first stage of the food chain and the steps farmers can take to optimise the food safety control of products of animal origin. This inevitably means controlling the health status of the animals from which food products are derived. The ...
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One of the effects of fisheries on ecosystems is that they tend to remove the larger, higher-trophic-level species and thus progressively lower the mean trophic level (TL) of the landings. This effect is known as “fishing down the food web” (Pauly et al. 1998; but see also Essington et al. [2006] for addition of low-TL fisheries instead of decline in high-TL fisheries, termed “fishing through m...
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ژورنال
عنوان ژورنال: Oecologia
سال: 2012
ISSN: 0029-8549,1432-1939
DOI: 10.1007/s00442-012-2387-8