Paul Henning Krogh

Does introduction of clover in an agricultural grassland affect the food base and functional diversity of Collembola?

Publication: Research - peer-reviewJournal article

DOI

  • Alessandra D'Annibale
    Alessandra D'Annibale
  • Valentina Sechi
    Valentina SechiDepartment of Soil Quality, Wageningen UniversityNetherlands
  • Thomas Larsen
    Thomas LarsenLeibniz-Laboratory for Radiometric Dating and Stable Isotope Research, Christian-Albrechts-Universität zu KielGermany
  • Søren Christensen
    Søren ChristensenKøbenhavns UniversitetDenmark
  • Paul Henning Krogh
  • Jørgen Eriksen

Introduction of legumes (i.e. white clover) in agricultural grasslands is a common practice to improve yields, but how this affects soil fauna populations, particularly mesofauna, is still poorly understood. We investigated taxonomical and functional differences of Collembola communities between plots with either perennial ryegrass (Lolium perenne L.), whiteclover (Trifolium repens L.) or a mixture of both in a Danish agricultural grassland 6 and 14 months after establishing the leys (September and May, respectively). Diet preferences were investigated via stable isotope analyses (SIA) of carbon (13C) and nitrogen (15N). Collembolan abundance data were used to analyse morphological and ecological traits of the collected taxa and calculate functional diversity indices. Our stable isotope results show that root-derived resources made larger contributions to epedaphic and hemiedaphic species in the white clover than ryegrass plots. Changes in taxa specific density and traits distribution as a response to the C:N ratio of plant material, suggest that plant material quality was the main factor affecting the collembolan community,especially when comparing the two sampling occasions. Functional richness decreased under conditions of low quality material. In contrast to our hypothesis, population densities did not increase under mixture treatment and functional richness decreased. Our results suggest that habitat changes, via different plant composition, can affect some functional groups, having in turn effects on the functional diversity of the community.  

Original languageEnglish
JournalSoil Biology & Biochemistry
Volume112
Pages (from-to)165-176
ISSN0038-0717
DOIs
StatePublished - 19 May 2017

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