Tropical Forest Community Ecology

298 Tad C. Theimer and Catherine A. Gehring

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Figure 17.1 Total number of individuals of 62 seedling species that recruited on both exclosure plots (above the
abscissa) and open plots during the 4.5 years after exclosures were erected.

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% AMF colonization (%)

Figure 17.2 Mean levels of colonization by arbuscular mycorrhizal fungi (AMF) ofCryptocaryaangulataseedlings
germinating naturally in five paired exclosure (hatched bars) and open (open bars) plots. The bars represent the mean
(±1 SE) of 3–4 seedlings from each plot. Seedlings were from the same germination cohort and were approximately
5 months old at the time of sampling. Seedlings from open plots had higher average levels of AMF colonization than
seedlings from exclosure plots (means±1 SE for open and exclosure seedlings are 23.18±1.58 and 8.24±0.89,
respectively, pairedt-test,t=−14.51,P<0.001).