Predicting understory maximum shrubs cover using altitude and overstory basal area in different Mediterranean forests
González-Olabarria, José Ramón
Mola Yudego, Blas
MetadataShow full item record
In some areas of the Mediterranean basin where the understory stratum represents a critical fire hazard, managing the canopy cover to control the understory shrubby vegetation is an ecological alternative to the current mechanical management techniques. In this study, we determine the relationship between
the overstory basal area and the cover of the understory shrubby vegetation for different dominant canopy species (Pinaceae and Fagaceae species) along a wide altitudinal gradient in the province of Catalonia (Spain). Analyses were conducted using data from the Spanish National Forest Inventory. At the regional scale, when all stands are analysed together, a strong negative relationship between mean shrub cover and site elevation was found. Among the Pinaceae species, we found fairly good relationships between stand basal area and the maximum development of the shrub stratum for species located at intermediate elevations (Pinus nigra, Pinus sylvestris). However, at the extremes of the elevation-climatic gradient (Pinus halepensis and Pinus uncinata stands), stand basal area explained very little of the shrub cover variation probably because microsite and topographic factors override its effect. Among the Fagaceae species, a negative relationship between basal area and the maximum development of the shrub stratum was found in Quercus humilis and Fagus sylvatica dominated stands but not in Quercus ilex. This can be due to the particular canopy structure and management history of Q. ilex stands. In conclusion, our study revealed a marked effect of the tree layer composition and the environment on the relationship between the development of the understory and overstory tree structure. More fine-grained studies are needed to provide forest managers with more detailed information about the relationship between these two forest strata.
Is part ofEuropean Journal of Forest Research, 2011, vol. 130, núm. 1, p. 55-65
Showing items related by title, author, creator and subject.
Are forest disturbances amplifying or canceling out climate change-induced productivity changes in European forests? Reyer, Christopher P. O.; Bathgate, Stephen; Blennow, Kristina; Borges, José G.; Bugmann, Harald; Delzon, Sylvain; Faias, Sonia P.; Garcia Gonzalo, Jordi; Gardiner, Barry; González-Olabarria, José Ramón; Gracia, Carlos; Guerra Hernández, Juan; Kellomäki, Seppo; Kramer, Koen; Lexer, Manfred J.; Lindner, Marcus; van der Maaten, Ernst; Maroschek, Michael; Muys, Bart; Nicoll, Bruce; Palahí, Marc; Palma, João H.N.; Paulo, Joana A.; Peltola, Heli; Pukkala, Timo; Rammer, Werner; Ray, Duncan; Sabaté i Jorba, Santi; Schelhaas, Mart-Jan; Seidl, Rupert; Temperli, Christian; Tomé, Margarida; Yousefpour, Rasoul; Zimmermann, Niklaus E.; Hanewinkel, Marc (IOP Publishing, 2017-03-16)Recent studies projecting future climate change impacts on forests mainly consider either the effects of climate change on productivity or on disturbances. However, productivity and disturbances are intrinsically linked ...
Valuing acorn dispersal and resprouting capacity ecological functions to ensure Mediterranean forest resilience after fire Puerta-Piñero, Carolina; Brotons, Lluís; Coll Mir, Lluís; González-Olabarria, José Ramón (Springer Nature, 2011-08-21)Ecological processes within forests provide vital ecosystem services to society, most of which depend on the persistence of tree cover that can be altered after the impact of a disturbance. The aim of the present study was ...
Combining aerial LiDAR and multispectral imagery to assess postfire regeneration types in a Mediterranean forest Martín Alcón, Santiago; Coll Mir, Lluís; De Cáceres, Miquel; Guitart i Xarpell, Lídia; Cabré, Mariló; Just, Ariadna; González-Olabarria, José Ramón (NRC Research Press (Canadian Science Publishing), 2015-02-26)Wildfires play a major role in driving vegetation changes and can cause important environmental and economic losses in Mediterranean forests, especially where the dominant species lacks efficient postfire regeneration ...