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Agricultural land use affects abundance and dispersal tendency of predatory arthropods

Hanson, Helena I. LU ; Birkhofer, Klaus LU ; Smith, Henrik G. LU ; Palmu, Erkki LU and Hedlund, Katarina LU (2017) In Basic and Applied Ecology 18. p.40-49
Abstract

Predatory arthropods contribute to biological control, but to become an integral part of agricultural management, it is essential to identify drivers of their spatio-temporal distribution at the landscape scale. This study focuses on how agricultural land use affects the community composition, emergence and dispersal tendency of predatory arthropods. The arthropods were collected in emergence traps during the growing season (14 weeks) in a gradient of agricultural land uses from intensively managed sugar beet fields, over winter wheat fields, to less intensively managed grasslands. The emergence traps were equipped with one pitfall trap and a collecting bottle at the top. The distribution of the arthropods between these two collecting... (More)

Predatory arthropods contribute to biological control, but to become an integral part of agricultural management, it is essential to identify drivers of their spatio-temporal distribution at the landscape scale. This study focuses on how agricultural land use affects the community composition, emergence and dispersal tendency of predatory arthropods. The arthropods were collected in emergence traps during the growing season (14 weeks) in a gradient of agricultural land uses from intensively managed sugar beet fields, over winter wheat fields, to less intensively managed grasslands. The emergence traps were equipped with one pitfall trap and a collecting bottle at the top. The distribution of the arthropods between these two collecting methods was assumed to represent their tendency to move out of the habitat. The grasslands had the highest numbers of spiders, while the winter wheat fields had the highest numbers of omnivorous rove beetles and macropterous predaceous ground beetles. The phenology of emergence differed between the land-use types, resulting in seasonal differences in community composition. The overall dispersal tendency of predatory arthropods was higher in crop fields than in grasslands. This study suggests that only a diverse mix of agricultural land uses will provide high levels of predators from different functional groups, throughout the growing season.

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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Biological control, Emergence, Functional groups, Landscape, Natural enemies, Phenology
in
Basic and Applied Ecology
volume
18
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:85007170316
  • wos:000395478300005
ISSN
1439-1791
DOI
10.1016/j.baae.2016.10.004
language
English
LU publication?
yes
id
5a2200a5-7d5a-41bd-b1b2-7ce49a1bfbdd
date added to LUP
2017-04-19 11:33:21
date last changed
2017-09-18 13:32:39
@article{5a2200a5-7d5a-41bd-b1b2-7ce49a1bfbdd,
  abstract     = {<p>Predatory arthropods contribute to biological control, but to become an integral part of agricultural management, it is essential to identify drivers of their spatio-temporal distribution at the landscape scale. This study focuses on how agricultural land use affects the community composition, emergence and dispersal tendency of predatory arthropods. The arthropods were collected in emergence traps during the growing season (14 weeks) in a gradient of agricultural land uses from intensively managed sugar beet fields, over winter wheat fields, to less intensively managed grasslands. The emergence traps were equipped with one pitfall trap and a collecting bottle at the top. The distribution of the arthropods between these two collecting methods was assumed to represent their tendency to move out of the habitat. The grasslands had the highest numbers of spiders, while the winter wheat fields had the highest numbers of omnivorous rove beetles and macropterous predaceous ground beetles. The phenology of emergence differed between the land-use types, resulting in seasonal differences in community composition. The overall dispersal tendency of predatory arthropods was higher in crop fields than in grasslands. This study suggests that only a diverse mix of agricultural land uses will provide high levels of predators from different functional groups, throughout the growing season.</p>},
  author       = {Hanson, Helena I. and Birkhofer, Klaus and Smith, Henrik G. and Palmu, Erkki and Hedlund, Katarina},
  issn         = {1439-1791},
  keyword      = {Biological control,Emergence,Functional groups,Landscape,Natural enemies,Phenology},
  language     = {eng},
  month        = {02},
  pages        = {40--49},
  publisher    = {Elsevier},
  series       = {Basic and Applied Ecology},
  title        = {Agricultural land use affects abundance and dispersal tendency of predatory arthropods},
  url          = {http://dx.doi.org/10.1016/j.baae.2016.10.004},
  volume       = {18},
  year         = {2017},
}