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Modelos de proceso de la producción y dinámica del bosque mediterráneo

Authors: Zavala, Miguel A.; Rodríguez Urbieta, Itzíar; Bravo de la Parra, R.; Angulo, O.;

Modelos de proceso de la producción y dinámica del bosque mediterráneo

Abstract

[ES]: La gestión sostenible de los ecosistemas forestales requiere el conocimiento de los principios que regulan su estructura y función a diferentes niveles de organización biológica, desde la hoja hasta el ecosistema. Los modelos de proceso son, junto a la experimentación, elementos esenciales para avanzar en la identificación de dichos principios. En este trabajo se revisan avances y retos claves para la formulación de modelos de proceso de ecosistemas forestales mediterráneos a diferentes niveles funcionales, desde la planta hasta el paisaje. A escala de planta se discute un modelo general de intercambio gaseoso, fundamentado en procesos de optimización, que incorpora explícitamente la retroalimentación entre la transpiración y el potencial hídrico del suelo. A escala de rodal se introduce un marco analítico en forma de sistema de ecuaciones en derivadas parciales que permite describir la dinámica de la estructura de la población a partir de la respuesta individual de cada árbol a la heterogeneidad ambiental y las interacciones entre individuos. Finalmente se discute la estructura general de los modelos de dinámica forestal espacialmente explícitos y su aplicación al estudio de los mecanismos de ensamblaje del bosque mediterráneo.

[EN]: Sustainable management of forest ecosystems requires an understanding of the mechanisms governing their structure and function across levels of biological organization, from the leaf to the ecosystem. Process-based models are, along experimentation, a critical element for advancing in this understanding. In this contribution we review key advances and challenges for the development of process-based models of Mediterranean forest ecosystems at several functional levels: from the whole-plant to the landscape. At the whole-plant level we discuss a gas exchange simulator that describes explicitly the feedback between transpiration and soil water potential through a plant optimization process. At the stand level, a partial differential equation framework is introduced, that allows us to scale up plant physiological processes from the leaf to the stand level. The model describes explicitly the dynamics of stand structure based on species individual responses to resource heterogeneity and among tree interactions. Finally we discuss the general structure of spatially-explicit forest models as well as their application to the identification of rules of community assembly of Mediterranean forests.

Esta recopilación ha sido financiada a través de los proyectos REN2002-04041-C02-02/ GLO y REN2000-0745/GLO, CICYT.

15 páginas, 9 figuras, 53 referencias.

Peer reviewed

Keywords

Water stress, Environmental heterogeneity, Stomatal conductance, Dispersal, Conductancia estomática, Dispersión, Heterogeneidad ambiental, Estrés hídrico, Coexistencia, Modelo continuo de población estructurada, Structured population continuous model, Coexistence

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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