Crítica y perspectivas de los AGRO(bio)combustibles: el caso de Cataluña en el contexto español.

Sastre S, Peguero G, Lomas PL, di Donato M (2008) Crítica y perspectivas de los AGRO(bio)combustibles: el caso de Cataluña en el contexto español. Dossier CIP Ecosocial n.1 Sostenibilidad.

 

 

Hormigas en zonas gipsófilas. Primera cita de Cardiocondyla batesii Forel (Hymenopera, Formicidae) y actualización del listado para Catalunya.

Roig X. Espadaler X, Cuscó R, García F, Gómez K, Serrano S, Vila R (2008) Hormigas en zonas gipsófilas. Primera cita de Cardiocondyla batesii Forel (Hymenopera, Formicidae) y actualización del listado para Catalunya. Boletín de la sociedad entomológica aragonesa 42: 189-192.

Pollination networks and functional specialization: a test using Lesser Antillean plant-hummingbird assemblages.

Dalsgaard B, Martín González A M, Olesen J M, Timmermann A, Andersen L A, Ollerton J (2008) Pollination networks and functional specialization: a test using Lesser Antillean plant-hummingbird assemblages. Oikos 117: 789-793.

Response of the invader Cortaderia selloana and two coexisting natives to competition and water stress.

Domènech R, Vilà M (2008) Response of the invader Cortaderia selloana and two coexisting natives to competition and water stress. Biological Invasions 10: 903-912.

Cortaderia selloana seed germination under different ecological conditions.

Domènech R, Vilà M (2008) Cortaderia selloana seed germination under different ecological conditions. Acta Oecologia 33 : 93-96.

La compressió amb pèrdua en imatges destinades a la generació de cartografia temàtica: Nous resultats.

Zabala A, Pons X (2008) La compressió amb pèrdua en imatges destinades a la generació de cartografia temàtica: Nous resultats. Actes del II Congrés Català de Geografia. Barcelona. 29, 30 i 31 de maig de 2008.

Contrasting effects of invasive plants in plant-pollinator networks.

Bartomeus N, Vilà M, Santamaría L (2008) Contrasting effects of invasive plants in plant-pollinator networks. Oecologia 155: 761-770.

Semblança del Dr. Oriol de Bolòs i Capdevila (in memoriam)",

Pons X (2008) Semblança del Dr. Oriol de Bolòs i Capdevila (in memoriam)", http://scg.iec.cat/Scg7/Scg72/S720067a.htm, 14:6-9.

Estrés hídrico: ecofisiología y escalas de la sequía. En: VALLADARES,F.(ed.). *Ecología del bosque mediterráneo en un mundo cambiante*. 2ª edidción. Naturaleza y Parques Nacionales. Ministerio de Medio Ambiente. Madrid. pp. 165-192

VALLADARES, F., VILAGROSA, A., PEÑUELAS, J., OGAYA, R., CAMARERO, J.J., (2008) Estrés hídrico: ecofisiología y escalas de la sequía. En: VALLADARES,F.(ed.). *Ecología del bosque mediterráneo en un mundo cambiante*. 2ª edidción. Naturaleza y Parques Nacionales. Ministerio de Medio Ambiente. Madrid. pp. 165-192

Implications of foliar terpene content and hydration on leaf flammability of Quercus ilex and Pinus halepensis

Alessio G.A., Peñuelas J., De Lillis M., Llusià J. (2008) Implications of foliar terpene content and hydration on leaf flammability of Quercus ilex and Pinus halepensis. Plant Biology. 10: 123-128.
Enllaç
Doi: 10.1111/j.1438-8677.2007.00011.x

Resum:

We investigated the implications of foliar hydration and terpene content on leaf flammability in two widely distributed forest species of the Mediterranean basin, Quercus ilex, which does not store terpenes, and Pinus halepensis, a terpene-storing species. The experiments were carried out in plants grown under different water regimes that generated a wide range of foliar hydration and terpene contents. We monitored the temperatures and time elapsed to reach the smoke, pyrolysis and flame phases. Smoke appeared much earlier (37 versus 101 s) and at lower temperatures (96 versus 139 °C) in Quercus ilex than in Pinus halepensis. Quercus ilex reached pyrolysis earlier than Pinus halepensis (278 versus 338 s) but at the same temperature (365-371 °C). There were no significant differences in time elapsed nor in temperature for flammability (386-422 s; 505-487 °C in both species). Quercus ilex had lower water hydration than Pinus halepensis (41 versus 100%) and the leaf content of terpenes in Quercus was three orders of magnitude lower. The results of this study show no differences in the flame phase between the two species and the absence of a significant relationship between temperature and elapsed time of the different flammability phases in relation to monoterpene content; thus indicating that the role of monoterpenes in flammability phases is smaller than that of the water content. This, however, does not exclude the effects of terpene content on plant combustibility and fire propagation once fires start. © 2008 German Botanical Society and The Royal Botanical Society of the Netherlands.

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