Isabel Cañellas

Consejo Superior de Investigaciones Científicas

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Icíar Alberdi

Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria

Hortensia Sixto

Consejo Superior de Investigaciones Científicas

Fernando Montes

Consejo Superior de Investigaciones Científicas

Guillermo Gea‐Izquierdo

Consejo Superior de Investigaciones Científicas

Miren del Rı́o

Management Research Institute

Laura Hernández

Consejo Superior de Investigaciones Científicas

Mariola Sánchez‐González

Consejo Superior de Investigaciones Científicas

Daniel Moreno‐Fernández

Consejo Superior de Investigaciones Científicas

Patricia Adame

Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria

Rafael Calama

Instituto de Ciencias Forestales

Cooperative Institutions

Consejo Superior de Investigaciones Científicas

Universidad Politécnica de Madrid

Forest Science and Technology Centre of Catalonia

Center for International Forestry Research

Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria

Instituto de Ciencias Forestales

Forest Research

Universidad de Valladolid

Swiss Federal Institute for Forest, Snow and Landscape Research

Universidad Complutense de Madrid

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Bioclimatologie et biogéographie des steppes andes du nord de Afrique - Diversité biologique, développment durable et désertisation. Por LE HOUÉROU, H.L.

Pastos: Revista de la Sociedad Española para el Estudio de los Pastos (1995)

Isabel Cañellas

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Citations (22)

Response to the interaction of thinning and pruning of pine species in Mediterranean mountains

European Journal of Forest Research (2014)

Daniel Moreno‐Fernández Mariola Sánchez‐González Juan Gabriél Álvarez‐González Andrea Hevia Juan Majada

Thinning

Pruning

Aleppo Pine

Silviculture

10.1007/s10342-014-0800-z

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Citations (21)

Exploring range shifts of contrasting tree species across a bioclimatic transition zone

European Journal of Forest Research (2017)

Laura Hernández Rut Sánchez de Dios Fernando Montes Helios Sainz-Ollero Isabel Cañellas

Global Change

10.1007/s10342-017-1047-2

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Citations (27)

Fire activity projections in the SRES A2 and B2 climatic scenarios in peninsular Spain

International Journal of Wildland Fire (2012)

Antonio Vázquez de la Cueva José R. Quintana Isabel Cañellas

Climate change is affecting the meteorological and climatic conditions in which forest vegetation develops. These conditions are also determinant in present and future forest fire activity. In order to quantify the expected alterations in future fire activity, we built linear regression models using monthly meteorological variables and the recorded fire activity in peninsular Spain. These models were developed for 15 territories and for the number of fires, the forest area burned and the wooded forest area burned. The meteorological variables used as predictors are derived from a Regional Climate Model covering the period 1961–90 as the control scenario and 2071–2100 as the future scenario. In the 13 territories with valid models, the explained variance ranged from 20 to 68% for the number of fires, from 12 to 66% for the forest area burned, and from 12 to 62% for the wooded forest area burned. Based on these models, we calculated the ratios between the estimations for the climatic scenarios SRES A2 and B2 and the estimates for the control period. For the entire area and for the A2/control and B2/control respectively, the ratios are 2.5 and 2 times for the number of fires, 4.6 and 3.4 for the forest area burned and 3.9 and 3 times for the wooded forest area burned. In spite of the uncertainties regarding future climatic scenarios as well as the simplicity of the model, the results nevertheless point to a very significant increase in fire activity. Forest management should therefore be focussed on adaptation procedures as well as on ecosystem resilience. This strategy will promote a more sustainable coexistence of forests and fires in altered fire regimes.

Fire regime

10.1071/wf11013

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Citations (24)

Hydraulic adjustment of two Iberian pine species to climate variability

Dario Martin‐Benito Hans Beeckman M. del Raio Isabel Cañellas

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Spatio-temporal patterns of defoliation in agro-forestry Quercus ilex L. systems

Research Square (Research Square) (2024)

Isabel González Nerea Oliveira Icíar Alberdi Patricia Adame A. Fuertes

Abstract Agroforestry systems such as oak dehesas face increased vulnerability due to the abandonment of sustainable practices, extreme droughts, and emerging pathogens. Despite the adaptability of the holm oak (Quercus ilex L.) to adverse conditions, signs of deterioration such as defoliation, reduced growth, and increased mortality have been observed in recent years. This study aims to evaluate the temporal dynamics of defoliation in Q. ilex dehesa systems distributed across western Spain. Furthermore, we aim to study the potential effects of climate and site conditions on defoliation in Q. ilex stands. Defoliation was analyzed over a 31-year period (1987–2018) in 254 monitoring plots, examining correlations with site variables (elevation, latitude, slope, orientation, soil texture, nitrogen, and carbon) and climate factors (temperature, precipitation). Average defoliation ranged from 17.9–21.5%, with northern Q. ilex dehesas in cooler, wetter regions exhibiting less defoliation than southern populations in harsher environments. Between 1987 and 1998, defoliation increased markedly across the region, especially in northern dehesas (up to an 88% rise), compared to a 40–50% increase at more favorable sites. Defoliation was negatively correlated with soil nitrogen content, latitude, and elevation, and positively correlated with clay content and average annual temperature. Therefore, the forecasted harsher climatic conditions may contribute to increased defoliation of entire populations of Q. ilex growing in dehesas. This could threaten the persistence of these agroforestry systems and the ecosystem services provided by them, especially in the southern populations.

10.21203/rs.3.rs-5409975/v1

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Biotic factors and increasing aridity shape the altitudinal shifts of marginal Pyrenean silver fir populations in Europe

Forest Ecology and Management (2018)

Laura Hernández J. Julio Camarero Eustaquio Gil‐Pelegrín Miguel Ángel Saz Sánchez Isabel Cañellas

Vitality

Abies alba

Biotic component

Hornbeam

10.1016/j.foreco.2018.09.037

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Citations (23)

Acorn production in Spanish holm oak woodlands

Forest Systems (2006)

Guillermo Gea‐Izquierdo Isabel Cañellas G. Montero

We present a review on the state-of-the-art of fruit prodution in Western Iberia woodlands («dehesas»), and particularly in Q. ilex (holm oak) «dehesas». This threatened ecosystem is of very high ecological and economical importance. Quercus sp. fruits (acorns) are essential for wildlife, and for pig fattening in «dehesas». In the first part of this review we briefly describe the phenology of the holm oak and the factors affecting acorn morphology and chemical composition. In the second half we analyze the main known factors reported in the literature that determine acorn production: pruning, stand characteristics, and site (weather and soil). We make several suggestions to improve future research and detect the existing gaps in the undertanding of acorn production. Fruit production is highly variable, both between and within years and individuals. The mean production in «dehesas» (mean density circa 50 trees/ha) is around 250-600 kg/ha (≈100 g/canopy-m2, CV > 100%). Acorn morphology is also very variable, with mean sound acorn size around 3.5 × 1.6 cm, CV ≈ 10% (3.5 g/acorn, CV > 50%). Silviculture plays an essential role in acorn production. Acorn production per tree seems to be negatively related to density. The effect of pruning is less clear: production seems to be reduced in the first and second years after pruning. After the third year it is not possible to discern from the literature whether there is any response to pruning or not. Weather and soil (site) also impact production and their effects should be explored in future management. The influence of genetics is unknown and should also be addressed. Longer data series are necessary. The dasometric features of the stands need to be characterized, in order to better understand production and compare results from different locations. Much research is still required to understand the functioning of fruiting in these woodlands.

Acorn

Pruning

Silviculture

10.5424/srf/2006153-00976

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Citations (79)

Modeling individual-tree mortality in Pyrenean oak (Quercus pyrenaica Willd.) stands

Annals of Forest Science (2010)

Patricia Adame Miren del Rı́o Isabel Cañellas

10.1051/forest/2010046

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Citations (35)