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    • IJAFR, volume 54, no 2, 2015
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    • Irish Journal of Agricultural & Food Research
    • IJAFR, volume 54, no 2, 2015
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    The response of sward-dwelling arthropod communities to reduced grassland management intensity in pastures

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    Author
    Helden, Alvin J.
    Anderson, Annette
    Finn, John cc
    Purvis, Gordon
    Keyword
    Rural Environment Protection Scheme (REPS)
    agri-environment
    Insect
    Biodiversity
    Pasture
    Date
    2015-12-30
    
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    URI
    http://hdl.handle.net/11019/1054; http://dx.doi.org/10.1515/ijafr-2015-0012
    Citation
    Helden, A., Anderson, A., Finn, J., et al. (2015). The response of sward-dwelling arthropod communities to reduced grassland management intensity in pastures. Irish Journal of Agricultural and Food Research, 54(2), pp. 107-120. doi:10.1515/ijafr-2015-0012
    Abstract
    We compared arthropod taxon richness, diversity and community structure of two replicated grassland husbandry experiments to investigate effects of reduced management intensity, as measured by nutrient input levels (390, 224 and 0 kg/ha per year N in one experiment, and 225 and 88 kg/ha per year N in another). Suction sampling was used to collect Araneae, Coleoptera, Hemiptera and Hymenoptera, with Araneae and Coleoptera also sampled with pitfall trapping. Univariate analyses found no significant differences in abundance and species density between treatments. However, with multivariate analysis, there were significant differences in arthropod community structure between treatments in both experiments. Reducing N input and associated stocking rates, as targeted by agri-environment schemes, can significantly alter arthropod communities but without increasing the number of species present. Other approaches that may be necessary to achieve substantial enhancement of sward arthropod biodiversity are suggested.
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    Environment, Soils & Land Use
    IJAFR, volume 54, no 2, 2015

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