Un marco conceptual y analítico para estimar la integridad ecológica a escala de paisaje

L. A. Vélez Restrepo; A. Gómez Sal

doi:10.3989/arbor.2008.i729.159

Authors

L. A. Vélez Restrepo Universidad Nacional de Colombia, sede Medellín, Escuela de Planeación urbano-regional
A. Gómez Sal Departamento de Ecología, Universidad de Alcalá

DOI:

https://doi.org/10.3989/arbor.2008.i729.159

Keywords:

Ecological integrity, naturalness, landscape integrity, spatial structure, landscape planning, forest maturity index, ecological coherence

Abstract

A conceptual and analytical framework to assess ecological integrity at a landscape level. A concep tual and methodological approach for the ecological integrity analysis at landscape level is presented. The aim is providing a tool for land planning and nature conservation. With this purpose the meaning of integrity and related concepts are discussed, and a model to evaluate landscape integrity by a comprehensive scheme is proposed. The first index is based in metrics of landscape ecology theory (connectivity, cover of both conservation areas and human managed land, etc.) to evaluate the different ecosystem fragments pattern. The second one, an ecosystems integrity index, is focused to evaluate remnants with a structure close to maturity and evaluates the mathematical distance to a reference hypothetical composition. Finally, the agricultural area is evaluated by a coherence index, with emphasis in ecological processes but also including the natural structures with conservation functions. These indexes are combined in a model that facilitates the joint consideration of their values and the comparison with theoretical scenarios. The model allows us to develop a concurrent management of relevant variables that usually are associated to different environmental qualities. Because of its characteristics and the intermediate scale of application, the model constitutes an important tool for matching ecosystem integrity and land planning. Both are actions and concept and relevant for nature conservation and landscape management, but in general independently considered.

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Author Biography

L. A. Vélez Restrepo, Universidad Nacional de Colombia, sede Medellín, Escuela de Planeación urbano-regional

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