Individual study: Responses of grassland invertebrates to management by cutting: IV positive responses of Auchenorhyncha
Morris M.G. (1981) Responses of grassland invertebrates to management by cutting: IV positive responses of Auchenorhyncha. Journal of Applied Ecology, 18, 763-771
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Delay mowing or first grazing date on pasture or grassland
A replicated, randomised, controlled trial in 1973-1975 on a tall oatgrass Arrhenatherum elatius-dominated grassland in Cambridgeshire, UK (Morris 1981b) (same study as Morris 1979, Morris 1981a) found that three of seven leafhopper (Auchenorrhyncha) species were more abundant on plots cut in July than in plots cut in May, in at least one of the three years. There were significantly more Macrosteles laevis and Neophilaenus campestris individuals on plots cut in July-only than May-only in all three years (M. laevis: 0.8-1.9 individuals in May-only vs. 0.1 individuals in July-only plots; N. campestris: 1.0-2.5 vs. 0.0-0.3). There were more Adarrus ocellaris leafhoppers on plots cut in July-only than May-only in 1975 (10.3 vs. 1.5 individuals). However, one leafhopper species, Recilia coronifera, was less abundant on plots cut in July than May-only in 1975 (0.0 vs. 0.4 individuals). Four cutting treatments (uncut, May cut, July cut, May and July cuts) were replicated four times and randomly allocated to plots of 16 x 12 m. Invertebrates were sampled in October 1972-December 1975 using a D-Vac suction sampler.