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Which stream wood becomes functional following wildfires?

Large wood is a critical element in stream ecosystems, but only a subset of wood pieces actually provide hydraulic, geomorphic, and ecological functions. We test the current paradigm that larger pieces provide more function, and examine the role wildfires may play in affecting functionality of recruited wood. We conducted a cross-basin analysis in nine central Portugal watersheds, obtaining a variety of measure...

Cork oak vulnerability to fire: the role of bark harvesting, tree characteristi...

Forest 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...

Habitat use at fine spatial scale: how does patch clustering criteria explain t...

Large mammalian herbivores are keystone species in different ecosystems. To mediate the effects of large mammalian herbivores on ecosystems, it is crucial to understand their habitat selection pattern. At finer scales, herbivore patch selection depends strongly on plant community traits and therefore its understanding is constrained by patch definition criteria. Our aim was to assess which criteria for patch de...

Seleção de espécies lenhosas adequadas às técnicas de engenharia natural

Soil bioengineering was developed in central Europe after World War II and in Mediterranean Europe in the last twenty years; soil bioengineering has been recently applied also in Portugal suggesting its potential future development. Soil bioengineering, to consolidate and stabilize sliding down slopes, uses indigenous trees and shrubs with good vegetative propagation. A key feature of these species, employed as...

The FIRE PARADOX project: towards science-based fire management in Europe

Growth, soil properties and foliage chemical analysis comparison between pure a...

Ecosystems with mixed species compared to the ones with pure compositions provide a broader range of options in the fields of biodiversity, conservation, protection and restoration. Industrial plantations in Portugal are mostly monocultures with the predominance of coniferous forests, so the introduction of broadleaves could be important for the biodiversity and sustainability of Portuguese forests. This study ...

Ecologia do fogo e gestão de áreas ardidas

Evolução do material lenhoso de pinheiro bravo e eucalipto

The present work describes and analyzes the recent evolution of wood production from maritime pine (Pinus pinaster Aiton) and eucalyptus (Eucalyptus sp.) in a context that takes in account their potentiality to supply raw material for wood base industries. The improvements, from nineteen century to present time, on the methodologies associated with land inventories, with emphasis on national forest inventories,...

A fileira do papel e do cartão e a fileira das embalagens: análise de contexto

The present work describes and analyses the context of the paper and paper board sector and that of wood, paper and paper board wrapping and packaging sector, integrating the phases of industrial transformation up to the final products. The production flows are characterized, as well as the structure of the enterprises and workforce at the different phases of the productive cycle. The specificities associated w...

Avaliação da produção primária líquida em povoamentos puros e mistos de Quercus...

With this study we quantified Net Primary Production (NPP) of Pinus pinaster and Quercus pyrenaica pure and mixed stands. This evaluation was based on sampling plots from the last National Forest Inventory and is exclusively located in the district of Vila Real. Results from this study allowed the first NPP figures for these kind of forest stands, and thus the quantification of these ecosystems potential for se...