Effects of aboveground grazing on coupling among nitrifier activity, abundance and community structure

Xavier Le Roux, Franck Poly, Pauline Currey, Claire Commeaux, Brigitte Hai, Graeme W Nicol, James I Prosser, Michael Schloter, Eléonore Attard, Katja Klumpp

Research output: Contribution to journalArticlepeer-review

104 Citations (Scopus)

Abstract

The influence of switches in grassland management to or from grazing on the dynamics of nitrifier activity, as well as the abundance of ammonia-oxidizing bacteria, AOB and ammonia-oxidizing archeae, AOA, was analyzed for two years after changing management. Additionally community structure of AOB was surveyed. Four treatments were compared in mesocosms: grazing on previously grazed grassland (G-G); no grazing on ungrazed grassland (U-U); grazing on ungrazed grassland (U-G) and cessation of grazing on grazed grassland (G-U). Nitrifier activity and abundance were always higher for G-G than U-U treatments and AOB community structure differed between these treatments. AOA abundance was in the same range as AOB abundance and followed the same trend. Grazing led to a change in AOB community structure within
Original languageEnglish
Pages (from-to)221-232
Number of pages12
JournalThe ISME Journal
Volume2
Issue number2
Early online date29 Nov 2007
DOIs
Publication statusPublished - Feb 2008

Keywords

  • Ammonia
  • Animals
  • Archaea
  • Bacteria
  • Betaproteobacteria
  • DNA, Archaeal
  • DNA, Bacterial
  • Ecosystem
  • Nitrates
  • Oxidoreductases
  • Phylogeny
  • Poaceae
  • Polymerase Chain Reaction
  • RNA, Ribosomal, 16S
  • Sheep
  • Soil
  • Soil Microbiology
  • Urine

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