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Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Moorland is an ecosystem of tropical high mountain regions that plays an important role in water regulation due to its climatic, orographic and biodiversity-oriented environmental conditions. However, these qualities frequently present conflicts regarding soil use due to production activities unrelated to preservation and conservation. This study analyzes the main changes in vegetation cover (periods 1986 - 2000 - 2016) that reflect edges as agricultural frontiers, in the moorland area of the Cortadera Regional Natural Park (municipality of Siachoque, Colombia). Vegetation cover types were identified using the CORINE Land Cover methodology at a scale of 1:100,000, with the satellite image processor Landsat. Representative cover types included High open forest (Baa), dense non-wooded firm ground grassland (HdTf), mosaic of pastures and crops (Mpc), lagoons, lakes and natural swamps (LlCn) and artificial water bodies (Caa). A continuous decrease of the HdTf over time was identified (from 3,604 ha in 1986, to 3,106 ha in 2000 and 2,531 ha in 2016). In contrast, Mpc cover increased by 1,447 ha in 30 years (from 1,231 ha in 1986 to 2,678 ha in 2016). It is concluded that the changes in distribution of vegetation cover types are produced by the expansion of the agricultural frontier, despite the area's declaration in 2015 as a protected area. These results demonstrate a clear need for this issue to be addressed through participatory action of stakeholders involved in the conservation process, restoration and preservation of the Cortadera moor. [ABSTRACT FROM AUTHOR]

Copyright of Boletin de Geologia is the property of Universidad Industrial de Santander and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Deforestation has increased in different areas of the world due to the development of antropic activities such as the expantion od agricultural and livestock frontiries growth of areas of human settlements, among others. The displacement of vegetation cover is one of the factors that affect the water supply and regulation service. In the work, a methodology was developed and applied to understand the incidence of the contraction of the forest cover to the water regulation capacity of the Murrí river that is born in the area of the Las Orquídeas National natural Park, Colombia. It was identified that the basin experiences the process of changing native forest cover for pasture, however, its incidence on the water regime could not be statistically evidenced. This phenomenon may be associated with fact that the park area represents 8.4 % of the total area of the basin and the change in coverage in this does not exceed the resilience capacity of the basin. It is recommended to ratify the methodology with a greater number of satellite images and study the resilience capacity of Colombian hydrographic basins to plan the human activities that generate the change of land cover in a sustainable way. [ABSTRACT FROM AUTHOR]

Copyright of Bitácora Urbano/Territorial is the property of Bitacora Urbano/Territorial and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Artnodes is the property of Universitat Oberta de Catalunya and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Facultad de Ingeniería - UPTC is the property of Universidad Pedagogica y Tecnologica de Colombia, Facultad de Ingenieria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Ciencias Agricolas is the property of University of Narino, Faculty of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Biomass burning is a major source of greenhouse gas emissions in developing countries. In Colombia, land use change, forestry, and agriculture are responsible for more than 50% of the total greenhouse gas emissions. Fire is commonly used as a mechanism for land use change. In Colombia the Llanos Orientales and the Amazonia are subject to biomass burning every year during the dry season, specially from January to March. Studies of the spatial and temporal distribution of emissions are required for emissions report at a national level. The goal of this state of the art article is to describe a method to estimate emissions with a remote sensing approach and to present some of the variables already measured in Colombia. [ABSTRACT FROM AUTHOR]

Copyright of Ingeniería de Recursos Naturales y del Ambiente is the property of Universidad del Valle and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)