Abstract
Abstract The palmettos Serenoa repens and Sabal etonia are foundation species in many peninsular Florida vegetative associations. We monitored survival and growth of palmetto seedlings using two cohorts found in different vegetative associations. Mixed-species cohorts containing both Serenoa repens and Sabal etonia were individually tagged in 1989 and have been monitored until 2008. One cohort (N = 100 seedlings) is in an “inopina-phase” scrubby flatwoods and a second cohort (N = 78 seedlings) is in a “wiregrass-phase” flatwoods. The sand substrates at both sites are nutrient-poor Entisols that show rapid permeability, low available-water capacity, and acidic pH. In addition to experiencing seasonal and variable annual precipitation patterns, these cohorts endured a severe and prolonged drought during 1999–2001 as well as an intense fire at the height of this drought. Seedlings showed remarkable survivorship, with 57% of the flatwoods cohort and 35% of the scrubby flatwoods cohort surviving from 1989 ...
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