The dry weight and specific stem weight of seedlings sampled
from the seedbeds were arcsine (square-root) transformed and
analyzed using a 2-way univariate General Liner Model (GLM). The
seedbed-blocks were initially included in the analyses but were
later removed because block had no effect. Data from the choice-
experiment that was conducted in the greenhouse were ranked
because of non-independence of observations. The ranked data
were subjected to repeated-measures GLM with age, snail size,
seedlings per hill, and seedbed seed-density as main factors and
removing block (which had no effect) from the analysis. The con-
trolswere removed fromthe analysis because survival of hills in the
control arenas was 100% in every case. Hill biomass and absolute
snail-related reductions in hill biomass (differences between hill
biomass in arenas with snails present and control arenas without