Identification and number of invertebrates recovered from each litter sample.
Samples of litter were taken from 0.25 m2 plots in the research locations, and invertebrate animals extracted with Tullgren funnels. Animals were collected and preserved for counting and identification. For details see Richardson, B.A., Richardson, M.J. & Soto-Adames, F. (2005). Separating the effects of forest type and elevation on the diversity of litter invertebrate communities in a humid tropical forest in Puerto Rico. Journal of Animal Ecology 74, 926-936.