Peña Cortés, Fernando; Rebolledo Castro, Gonzalo; Hermosilla, K.; Hauenstein Barra, Enrique; Bertrán, Carlos; Schlatter, Roberto; Tapia, J.

Landscape Dynamics for the period 1980-2004 in the Budi River and Lake coastal basin, Chile : Considerations for the conservation of its wetlands

datacite.alternateIdentifier.citation	Ecologia Austral, Vol.16, N°2, 183,196, 2006	es
datacite.creator	Peña Cortés, Fernando
datacite.creator	Rebolledo Castro, Gonzalo
datacite.creator	Hermosilla, K.
datacite.creator	Hauenstein Barra, Enrique
datacite.creator	Bertrán, Carlos
datacite.creator	Schlatter, Roberto
datacite.creator	Tapia, J.
datacite.date	2006
datacite.date.issued	2012-02-26
datacite.subject	Humedales	es
datacite.subject	Biodiversidad	es
datacite.subject	Ecología del paisaje	es
datacite.title	Landscape Dynamics for the period 1980-2004 in the Budi River and Lake coastal basin, Chile : Considerations for the conservation of its wetlands	es
dc.date.accessioned	2012-02-26T05:02:44Z
dc.date.available	2012-02-26T05:02:44Z
dc.description.abstract	The landscape corresponds to a complex, open, space-time system, intermediate between nature and society. Its conditions and dynamics are determined by natural processes and human presence in which local and regional alterations modify ecological processes and patterns of biodiversity. Conspicuous in the Budi lake/river basin landscape are continental wetlands and marshy bodies of water and forests. Conflicts have arisen due to substitution and land-use change. Using the framework and scale of analysis of landscape ecology, the landscape dynamics of the Budi lake/river basin has been analyzed as an input for ecological planning of this area and conservation of its wetlands. Studies of variation of areas destined for different uses and land cover, as well as rate of change starting from category maps drawn up on the basis of photo-interpretation of aerial photographs of the area under study taken in 1980, 1994 and 2004, were done. Eight landscape types were identified, starting from previously drawn up classifications of ground cover and land-use. We also evaluated the variation in landscape patterns through the application of 21 measuring processes related to typology and surface, perimeters, shapes, diversity, aggregation and adjacency as indicators of landscape dynamics and evolution, which were applied in three levels: patches, classes and total landscape area. Among others, results showed a significant increase of the area of riverside wetlands (3,039.7 hectares in 1980 compared to 4,384.8 hectares in 2004), and a decrease in clear- water surface area. Furthermore, in the last 30 years there were increases in forestry plantations, of 17.6% between 1980 and 1994, and of 27.2% between 1994 and 2004; meanwhile, farming and cattle-raising have steadily decreased. Also, an increase in the number of patches and a decrease in their average size (except for wetlands), an increase in the total perimeters, and a decrease of distances between neighbours were assessed; all of which points to a landscape which is undergoing a process of fragmentation, with patches interspersed within the dominant pattern. The analysis carried out defines a system of wetlands having high connectivity with the contributing watersheds, spatial heterogeneity and intermixing of classes, in which current watershed uses are affecting the evolution of riverside areas. These indicates the extent of alteration of the system as well as the importance of the anthropogenic variable in its evolution; factors to be taken into account during the decision-making process of future proposals for land-use regulations involving control of sedimentation, protection of vegetation and maintaining connectivity.	es
dc.format	PDF	es
dc.identifier.uri	https://repositoriodigital.uct.cl/handle/10925/771
dc.language.iso	en	es
dc.source	Ecologia Austral	es
dc.title.alternative	Dinámica del paisaje para el período 1980-2004 en la cuenca costera del Lago Budi, Chile : Consideraciones para la conservación de sus humedales	es
oaire.resourceType	Artículo de Revista	es
uct.carrera	Geografía	es
uct.carrera	Ingeniería en Recursos Naturales Renovables	es
uct.catalogador	FGE	es
uct.comunidad	Recursos Naturales	es
uct.facultad	Facultad de Recursos Naturales	es
uct.indizacion	Scielo	es