CHARACTERIZATION OF DIFFERENT POPULATION STRUCTURES OF BLEPHAROCALYX SALICIFOLIUS (KUNTH) O. BERG (MYRTACEAE) SUBMITTED TO DIFFERENT DISTURBANCE SCENARIOS

Plauto Simão De-Carvalho, Sabrina do Couto de Miranda, Janete Rêgo Silva, Daniel Villarroel Segarra, John Du Vall Hay

Resumo


The ordinary models of agriculture economic development and land occupation pressures natural Brazilian savannas landscapes, especially over the last few decades. Those pressures result in the intensification of disturbance factors like fire, exotic species and fragmentation. Understanding how native species are structured under disturbance in Cerrado may contribute to mitigate anthropic pressure. In this study we have compared the structure of a native Myrtaceae species under different scenarios of fire disturbance by comparing population subsets attributes in an area of cerrado sensu stricto in Brazil. We have found the classical physiognomic responses to fire and vegetation cover to stem diameter, the number of branches and height. However, here well descripted to a Cerrado native species, usually poorly reported by science. Mean stem diameter was a sensitive parameter to disturbance. The number of bifurcations was higher where fire is intensified. This Cerrado's Myrtaceae species is competitive in height as similarly reported to Australian eucalypts and corroborates evolutive abilities to avoid fire topkill.


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Referências


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