Publication: Modelo sobre las preferencias de hábitat a escala local de Tetraclinis articulata (Vahl) Masters en una población del límite septentrional de su área de distribución
Authors
Nicolás, María José ; Esteve Selma, Miguel A. ; Palazón Ferrando, José Antonio ; López Hernández, José Joaquín
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Facultad de Biología
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Publisher
Murcia: Universidad de Murcia, Servicio de Publicaciones
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DOI
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info:eu-repo/semantics/article
Description
Abstract
En el presente trabajo se analizan los efectos en la distribución a escala local de Tetraclinis articulata de los diferentes factores ambientales, tanto de índole física (altitud, orientación, iluminación solar, drenaje y pendiente), como de índole biológica (competencia con Pinus halepensis). Se han utilizado modelos lineales generalizados con objeto de describir dicha relación. El análisis confirma que, en la zona de estudio (Peña del Águila, Cartagena-Sureste de España), Tetraclinis articulata se encuentra en el límite de su distribución, siendo el factor limitante la disponibilidad hídrica, expresada fundamentalmente en función de la orientación. Tetraclinis articulata presenta un comportamiento diferencial en función de dicha orientación, con su óptimo fisiológico en orientaciones umbría (nordeste), y su óptimo ecológico en las orientaciones sur de componente este debido, probablemente, a la competencia con Pinus halepensis. La umbría está ocupada por un pinar con baja presencia de Tetraclinis articulata pero con individuos de gran porte. Por el contrario, la solana (sur-sureste) está dominada por un sabinar de mayor densidad, pero con individuos de porte medio menor. En el Este se instala un mosaico a base de manchas de Tetraclinis articulata y de Pinus halepensis fruto aparentemente de una competencia más equilibrada entre ambos.
The aim of the study is to investigate, at local scale, the relationship between the distribution of Tetraclinis articulata and differents environ mental factors: physical as elevation, orientation, solar rays incidence, drainage, slope; and biological as the competition with Pinus halepen sis. Generalized linear models were used to describe this relation, offe ring its explanation by means of the major ecological theories. The study corroborates that the Tetraclinis articulata distribution limits are in the area, where the limiting factor is the water availability stated by the orientation. Tetraclinis articulata also presents a differential behaviour depending on the orientation: its physiological optimum is in the sha ded one (north-east) but its ecological optimum is in the east because of competition with Pinus halepensis. The shaded orientation is taken up by a pinewood with some big size Tetraclinis articulata trees, the sunny-spot (south-south-east) is under control of a tetraclinar opened of high density of small size trees while the east is organized as a mosaic of Tetraclinis articulata patchs and Pinus halepensis patchs where there is a balanced competition between both.
The aim of the study is to investigate, at local scale, the relationship between the distribution of Tetraclinis articulata and differents environ mental factors: physical as elevation, orientation, solar rays incidence, drainage, slope; and biological as the competition with Pinus halepen sis. Generalized linear models were used to describe this relation, offe ring its explanation by means of the major ecological theories. The study corroborates that the Tetraclinis articulata distribution limits are in the area, where the limiting factor is the water availability stated by the orientation. Tetraclinis articulata also presents a differential behaviour depending on the orientation: its physiological optimum is in the sha ded one (north-east) but its ecological optimum is in the east because of competition with Pinus halepensis. The shaded orientation is taken up by a pinewood with some big size Tetraclinis articulata trees, the sunny-spot (south-south-east) is under control of a tetraclinar opened of high density of small size trees while the east is organized as a mosaic of Tetraclinis articulata patchs and Pinus halepensis patchs where there is a balanced competition between both.
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Tetraclinis articulata , Matorral y bosque mediterráneos , Ecosistemas semiáridos , Modelos de distribución , Modelos Lineales Generalizados , Disponibilidad hídrica , Competencia interespecífica , Mediterranean scrubland and forest , Semi-arid ecosystems , Distribution models , Generalized linear models , Water availability , Interspecies competition
Citation
Nicolás, M. J., Esteve Selma, M. Ángel, Palazón, J. A., & López Hernández, J. J. (2004). MODELO SOBRE LAS PREFERENCIAS DE HÁBITAT A ESCALA LOCAL DE TETRACLINIS ARTICULATA(VAHL) MASTERS EN UNA POBLACIÓN DEL LÍMITE SEPTENTRIONAL DE SU ÁREA DE DISTRIBUCIÓN. Anales De Biología, (26), 117–155.
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