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Las carreteras al mar: estudio sobre el impacto de los vertebrados silvestres y los ecosistemas circundantes en dos corredores viales de Colombia
Road construction in or near natural areas has been identified as a major cause of habitat loss and fragmentation worldwide. In the department of Valle del Cauca, Colombia, two road corridors in different stages of development run from the city of Cali to the Buenaventura seaport. A research project...
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Published in: | Trilogía, ciencia, tecnología y sociedad ciencia, tecnología y sociedad, 2021, Vol.13 (24), p.11-36 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | Spanish |
Subjects: | |
Online Access: | Get full text |
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Summary: | Road construction in or near natural areas has been identified as a major cause of habitat loss and fragmentation worldwide. In the department of Valle del Cauca, Colombia, two road corridors in different stages of development run from the city of Cali to the Buenaventura seaport. A research project was developed in two phases to evaluate and quantify the impacts these roads have on the wild fauna populations in the area: corridor modeling and field validation. Interactions between wildlife populations and these road corridors were evaluated and quantified by modelling the corridors with information from geographic information systems (GIS) supported by field data on drainage structures, road traffic jams and trapping records. Four priority crossing areas were identified for nine mammal species. After evaluating 738 road structures, 19 species were recorded using these road structures and 38 species were run over on both roads. These roads differ in structures and layouts, however, their problems are shared, such as the lack of pre-existing road structures suitable for the passage of fauna, their use as a refuge and the poorly structured development on their periphery are the causes of the barrier effect that limits connectivity and gene flow of animals in this area.
La construcción de carreteras al interior o en proximidad de áreas naturales ha sido identificada como una de las principales causas de perdida y fragmentación del hábitat en todo el mundo. En el departamento del Valle del Cauca, Colombia, dos corredores viales, en distintas etapas de desarrollo, comunican a la ciudad de Cali con el puerto de Buenaventura. Para evaluar y cuantificar los impactos que tienen estas carreteras en las poblaciones silvestres de fauna de la zona se desarrolló un proyecto de investigación en dos fases: modelación de corredores y validación en campo. Las interacciones entre las poblaciones de fauna silvestre y estos corredores viales fueron evaluadas y cuantificadas a partir del modelamiento de corredores con información proveniente de los sistemas de información geográfica (SIG) respaldados por datos tomados en campo sobre estructuras de drenaje, atropellamientos y registros de fototrampeo. Se identificaron cuatro zonas prioritarias de cruce para nueve especies de mamíferos. Tras evaluar 738 estructuras viales, se registraron 19 especies utilizando estas estructuras y 38 especies fueron atropelladas en ambas carreteras. Dichas vías difieren en estructuras y trazados, |
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ISSN: | 2145-7778 2145-4426 2145-7778 |