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Cork oak vulnerability to fire: the role of bark harvesting, tree characteristi...
Catry, Filipe; Moreira, Francisco; Pausas, Juli; Fernandes, Paulo; Rego, Francisco; Cardillo, Enrique; Curt, ThomasForest ecosystems where periodical tree bark harvesting is a major economic activity may be particularly vulnerable to disturbances such as fire, since debarking usually reduces tree vigour and protection against external agents. In this paper we asked how cork oak Quercus suber trees respond after wildfires and, in particular, how bark harvesting affects post-fire tree survival and resprouting. We gathered dat...
Coefficient shifts in geographical ecology: an empirical evaluation of spatial ...
Bini, L. Mauricio; Diniz-Filho, J. Alexandre F.; Rangel, Thiago F. L. V. B.; Akre, Thomas S. B.; Albaladejo, Rafael G.; Albuquerque, Fabio S.Copyright © 2009 The Authors. Copyright © ECOGRAPHY 2009. ; A major focus of geographical ecology and macro ecology is to understand the causes of spatially structured ecological patterns. However, achieving this understanding can be complicated when using multiple regressions, because the relative importance of explanatory variables, as measured by regression coefficients, can shift depending on whether spati...
Biomass and mineralmass estimates in a "cerrado" ecosystem
Delitti,Welington Braz Carvalho; Meguro,Marico; Pausas,Juli GarciaThis work aimed to develop allometric equations for tree biomass estimation, and to determine the site biomass in different "cerrado" ecosystems. Destructive sampling in a "campo cerrado" (open savanna) was carried out at the Biological Reserve of Moji-Guaçu, State of São Paulo, southeastern Brazil. This "campo cerrado" (open savanna) grows under a tropical climate and on acid, low nutrient soils. Sixty wood pl...
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