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|a (DE-627)JST139234578
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|a (JST)26164807
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Grass, Ingo
|e verfasserin
|4 aut
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1 |
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|a Insectivorous birds disrupt biological control of cereal aphids
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
|b c
|2 rdamedia
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|a Online-Ressource
|b cr
|2 rdacarrier
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|a Insect-feeding birds may interfere with trophic interactions in plant–insect food webs, which may be particularly important in agroecosystems. Here, we studied how Eurasian Tree Sparrows (Passer montanus) affect aphids and their predators in cereal fields using bird exclusion experiments. The Tree Sparrows fed their nestlings with aphid antagonists. Hoverflies and ladybird beetles accounted for 77% of the food for the nestlings during peak aphid density. When birds were excluded, densities of hoverfly larvae, which were the most abundant aphid predator group in the cereals, were 4% higher in wheat and 45% higher in oat, while aphid densities were 24% lower in wheat and 26% lower in oat. The demonstrated disruption of biological control by mesopredators through bird predation may be a common phenomenon in cropping systems characterized by small-sized and abundant pest species. Management of biotic interactions such as biological control needs a broad food-web perspective, even in simplified agroecosystems.
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|a © 2017 The Ecological Society of America
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|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Agronomy
|x Crops
|x Field crops
|x Food crops
|x Grains
|x Cereal grains
|x Oats
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650 |
|
4 |
|a Biological sciences
|x Ecology
|x Animal ecology
|x Pests
|x Bird pests
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650 |
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4 |
|a Biological sciences
|x Biology
|x Zoology
|x Animals
|x Birds
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650 |
|
4 |
|a Biological sciences
|x Biology
|x Developmental biology
|x Animal development
|x Insect development
|x Insect larvae
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650 |
|
4 |
|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Agroecology
|
650 |
|
4 |
|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Agronomy
|x Crops
|x Field crops
|x Food crops
|x Grains
|x Cereal grains
|
650 |
|
4 |
|a Biological sciences
|x Ecology
|x Ecological processes
|x Ecosystem dynamics
|x Trophic dynamics
|x Trophic relationships
|x Predation
|x Predators
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650 |
|
4 |
|a Biological sciences
|x Ecology
|x Animal ecology
|x Insect ecology
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650 |
|
4 |
|a Applied sciences
|x Food science
|x Foodstuffs
|x Food
|
650 |
|
4 |
|a Behavioral sciences
|x Ethology
|x Animal behavior
|x Habitat selection
|x Animal nesting
|x Bird nesting
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655 |
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4 |
|a research-article
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700 |
1 |
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|a Lehmann, Katrin
|e verfasserin
|4 aut
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700 |
1 |
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|a Thies, Carsten
|e verfasserin
|4 aut
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700 |
1 |
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|a Tscharntke, Teja
|e verfasserin
|4 aut
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773 |
0 |
8 |
|i Enthalten in
|t Ecology
|d Duke University Press
|g 98(2017), 6, Seite 1583-1590
|w (DE-627)311927165
|w (DE-600)2010140-5
|x 19399170
|7 nnns
|
773 |
1 |
8 |
|g volume:98
|g year:2017
|g number:6
|g pages:1583-1590
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856 |
4 |
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|u http://www.jstor.org/stable/26164807
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|d 98
|j 2017
|e 6
|h 1583-1590
|