نتایج جستجو برای: 2008 from acaciatashakkori
تعداد نتایج: 5664487 فیلتر نتایج به سال:
no studies have been reported on children obesity prevalence of guangzhou, one of the most urbanized areas in china. this study tracks the secular trends of obesity prevalence of children.the data were derived from the surveys on students' constitution and health carried out by government. randomly, 3832 students in 2007, 13141 in 2008, 14052 in 2009, 13750 in 2010, and 15225 in 2011, aged 7-12...
Indirect interactions as mediated by higher and lower trophic levels have been advanced as key forces structuring herbivorous arthropod communities around the globe. Here, we present a first quantification of the interaction structure of a herbivore-centered food web from the High Arctic. Targeting the Lepidoptera of Northeast Greenland, we introduce generalized overlap indices as a novel tool ...
Plant diversity is known to affect success of host location by pest insects, but its effect on olfactory orientation of non-pest insect species has hardly been addressed. First, we tested in laboratory experiments the hypothesis that non-host plants, which increase odour complexity in habitats, affect the host location ability of herbivores and parasitoids. Furthermore, we recorded field data o...
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