Sensitivity of the Water Balance of South-Western France Maritime Pine Forests to Climate

1997 ◽  
pp. 193-205 ◽  
Author(s):  
D. Loustau ◽  
P. Berbigier ◽  
K. Kramer
Keyword(s):  
Water Balance ◽  
Maritime Pine ◽  
Pine Forests

Assessment of the Availability of Forest Biomass for Biofuels Production in Southwestern Portugal

2017 ◽  
Vol 371 ◽  
pp. 121-127 ◽  
Author(s):  
Isabel Malico ◽  
A.C. Gonçalves ◽  
A. Sousa
Keyword(s):  
Forest Biomass ◽  
Management Unit ◽  
Maritime Pine ◽  
Raw Material ◽  
Geographical Information ◽  
Pine Forests ◽  
Potential Contribution ◽  
Pinewood Nematode ◽  
Forest Residues ◽  
Residual Biomass

In 2014, Portugal was the seventh largest pellets producer in the World. Since the shortage of raw material is one of the major obstacles that the Portuguese pellets market faces, the need for a good assessment of biomass availability for energy purposes at both country and regional levels is reinforced. This work uses a Geographical Information System environment and remote sensing data to assess the availability and sustainability of forest biomass residues in a management unit with around 940 ha of maritime pine forest. The period considered goes from 2004 to 2015. The study area is located in Southwestern Portugal, close to a pellets factory; therefore the potential contribution of the residual biomass generated in the management unit to the production of pellets is evaluated. An allometric function is used for the estimation of maritime pine above ground biomass. With this estimate, and considering several forest operations, the residual biomass available was assessed, according to stand composition and structure. This study shows that, when maritime pine forests are managed to produce wood, the amount of residues available for energy production is small (an average of 0.37 t ha-1 year-1 were generated in the study area between 2004 and 2015). As a contribution to the sustainability of the Portuguese pellets industries, new management models for maritime pine forests may be developed. The effect of the pinewood nematode on the availability of residual biomass can be clearly seen in this study. In the management unit considered, cuts were made to prevent dissemination of the disease. This contributes to a higher availability of forest residues in a specific period of time, but, in the medium term, they lead to a decrease in the amount of residues that can be used for energy purposes.

scholarly journals Positive coupling between growth and reproduction in young post-fire Aleppo pines depends on climate and site conditions

2015 ◽  
Vol 24 (4) ◽  
pp. 507 ◽  
Author(s):  
Raquel Alfaro-Sánchez ◽  
J. Julio Camarero ◽  
Francisco R. López-Serrano ◽  
Raúl Sánchez-Salguero ◽  
Daniel Moya ◽  
...  
Keyword(s):  
Water Balance ◽  
Climate Warming ◽  
Growth Patterns ◽  
Tree Regeneration ◽  
Aleppo Pine ◽  
Pine Forests ◽  
Female Cone ◽  
Cone Production ◽  
Moisture Conditions ◽  
Growth And Reproduction

In fire- and drought-prone Mediterranean forests tree growth and regeneration depend on the moisture regime between fires. Therefore, post-fire tree regeneration will depend on moisture conditions and how they are altered by fire recurrence and climate warming. Aleppo pine forests are the most abundant Circum-Mediterranean ecosystems subjected to frequent wildfires and summer droughts. Because both stressors constrain their reproduction and growth patterns across diverse ecological conditions, these forests represent a suitable system to test how moisture availability drives post-fire regeneration. Aleppo pine is an obligate seeder species that reproduces at an early age after fire. Such precocious behaviour poses the question as to whether post-fire regeneration depends on moisture conditions and the coupling between female cone production and growth. Here, we evaluate if female cone production and radial growth are linked at the tree level in post-fire Aleppo pines by comparing a dry v. a very dry site and considering stands with three different tree densities in south-eastern Spain. We found that trees with higher basal areas produced more female cones and this positive association intensified as the water balance improved. Aleppo pines from the very dry site were more precocious in reproductive terms than pines of the same age from the dry site, but long-term cone production was lower at the very dry site. Lower tree density enhances the resilience of xeric post-fire Aleppo pine forests, in growth and reproduction terms, but this effect can be reversed by droughts. Overall, a more positive water balance improves post-fire regeneration by enhancing growth and cone production. Thus, silvicultural treatments such as thinning should be applied by taking into account the post-fire water balance to maximise growth and cone production in Aleppo pine stands. Our findings illustrate how climate warming could hamper post-fire tree regeneration by aggravating drought stress.

Resin tapping potential of Atlantic maritime pine forests depends on tree age and timing of tapping

2020 ◽  
Vol 157 ◽  
pp. 112940
Author(s):  
Rafael Zas ◽  
Ricardo Quiroga ◽  
Roberto Touza ◽  
Carla Vázquez-González ◽  
Luis Sampedro ◽  
...  
Keyword(s):  
Maritime Pine ◽  
Pine Forests ◽  
Tree Age

Changes in understory vegetation following prescribed fire in maritime pine forests

1991 ◽  
Vol 41 (1-2) ◽  
pp. 21-31 ◽  
Author(s):  
Francisco C. Rego ◽  
Stephen C. Bunting ◽  
Jose M. da Silva
Keyword(s):  
Prescribed Fire ◽  
Understory Vegetation ◽  
Maritime Pine ◽  
Pine Forests

Effects of air pollution from pulp and paper industry on breeding success of Great tit in maritime pine forests

Ecoscience ◽  
2011 ◽  
Vol 18 (2) ◽  
pp. 115-123 ◽  
Author(s):  
Rute A. Costa ◽  
Tapio Eeva ◽  
Catarina Eira ◽  
Jorge Vaqueiro ◽  
José V. Vingada
Keyword(s):  
Air Pollution ◽  
Breeding Success ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Great Tit ◽  
Pulp And Paper ◽  
Maritime Pine ◽  
Pine Forests

scholarly journals Drought-induced growth decline of Aleppo and maritime pine forests in south-eastern Spain.

2010 ◽  
Vol 19 (3) ◽  
pp. 458 ◽  
Author(s):  
Raúl Sánchez-Salguero ◽  
Rafael Maria Navarro ◽  
Jesús Juio Camarero ◽  
Ángel Fernández-Cancio
Keyword(s):  
Maritime Pine ◽  
Pine Forests ◽  
South Eastern ◽  
Growth Decline

Water balance of pine forests: Synthesis of new and published results

2018 ◽  
Vol 259 ◽  
pp. 107-117 ◽  
Author(s):  
Pantana Tor-ngern ◽  
Ram Oren ◽  
Sari Palmroth ◽  
Kimberly Novick ◽  
Andrew Oishi ◽  
...  
Keyword(s):  
Water Balance ◽  
Pine Forests

Evaluating the Economic Potential of Uneven-aged Maritime Pine Forests

2018 ◽  
Vol 143 ◽  
pp. 210-217 ◽  
Author(s):  
Renato Rosa ◽  
Paula Soares ◽  
Margarida Tomé
Keyword(s):  
Maritime Pine ◽  
Pine Forests ◽  
Economic Potential
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