Canopy tree populations in mesic savannas are often bimodal with few saplings but many smaller individuals of indeterminate age that repeatedly suffer topkill and regenerate from underground tissues. Little is known about growth rates or mechanisms that allow subadult trees to reach the canopy. The wooded savannas of northern Australia have high frequencies of dry-season fires. In a 32400-m 2 field experiment, 2405 juveniles (<150-cm height) and saplings (150-499cm) of the eucalypt canopy...[Show more]
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