Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Short term effects of intensive grazing on Listronotus bonariensis and some other epigeal invertebrates in a dairy pasture.

Abstract

The direct physical effects of treading and herbage removal by dairy cattle (at a stocking rate of 567 heifers/ha/day), on an overwintering population of Listronotus bonariensis and other invertebrates were quantified in a pasture in New Zealand during July 1980. Grazing had no apparent direct effects on populations of L. bonariensis, Rhytisternus miser, Clivina rugithorax, Xantholinus, Chelaner antarcticus or Lamyctes emarginatus. There was a significant increase in abundance of Haplaner sp. associated with grazing, while the abundance of Atheta spp. was decreased by 39% by grazing. The abundances of Pselaphophus atriventris and Deroceras reticulatum were reduced by 27 and 31%, resp., by grazing. It is concluded that intensive stocking of dairy pastures during winter has modest direct effects on the abundance of the epigeal meso- and macrofauna.