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Factors affecting post-fire crown regeneration in cork oak (Quercus suber L.) trees
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Orientador(es)
Resumo(s)
Cork oak (Quercus suber) forests are acknowledged
for their biodiversity and economic (mainly cork
production) values. WildWres are one of the main threats
contributing to cork oak decline in the Mediterranean
Basin, and one major question that managers face after Wre
in cork oak stands is whether the burned trees should be
coppiced or not. This decision can be based on the degree
of expected crown regeneration assessed immediately after
Wre. In this study we carried out a post-Wre assessment of
the degree of crown recovery in 858 trees being exploited
for cork production in southern Portugal, 1.5 years after a
wildWre. Using logistic regression, we modelled good or
poor crown recovery probability as a function of tree and
stand variables. The main variables inXuencing the likelihood
of good or poor crown regeneration were bark thickness,
charring height, aspect and tree diameter. We also
developed management models, including simpler but easier
to measure variables, which had a lower predictive
power but can be used to help managers to identify, immediately
after Wre, trees that will likely show good crown
regeneration, and trees that will likely die or show poor
regeneration (and thus, potential candidates for trunk
coppicing
Descrição
Palavras-chave
cork oak wildfires crown regeneration forest management
Contexto Educativo
Citação
"European Journal of Forest Research". ISSN 1612-4669. 128 (3) (2009) 231-240
Editora
Springer