Factores antropogénicos que explican la distribución de plantas exóticas en gradientes altitudinales de la cordillera de los Andes.
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Date
2024
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Concepción
Abstract
La mayor parte de los estudios sobre especies invasoras se realiza en lugares más accesibles del territorio, prestando poca atención a lo que sucede en lugares remotos como los ecosistemas de montaña, sin embargo, en el 2005 se creó la Red de Investigación de invasiones de montaña (MIREN) para estudiar a nivel global las invasiones en sitios con mayor gradiente altitudinal y evaluar la importancia de los factores que facilitan esta invasión. En esta habilitación profesional se analizaron los muestreos de vegetación realizados en 12 caminos distribuidas en 4 regiones de Chile (Central, Centro- sur, Sur y Subantártica) con el protocolo MIREN. Se hipotetizó que la cercanía a los asentamientos humanos son la principal vía de dispersión que poseen los propágulos de especies exóticas para establecerse en regiones montañosas. De los resultados de este trabajo se desprende que el incremento del turismo, la presencia de senderos y cercanía a asentamientos humanos en ecosistemas montañosos remotos facilitan la colonización y establecimiento de especies invasoras, siendo las variables más significativas, el índice de huella humana, distancia asentamiento humanos y cercanía al camino.
The most common studies on invasive species are carried out in more accessible parts of the territory, paying little attention to what happens in remote places such as mountain ecosystems. However, in 2005 the Mountain Invasion Research Network (MIREN) was created to study invasions at a global level in places with a greater altitudinal gradient and to evaluate the importance of the factors that facilitate this invasion. In the following research, sampling was carried out on 12 roads distributed in 4 regions of Chile (Central, Central-South, South and Subantarctic) with the t-Miren trail protocol, where 20 transects with 3 plots each were carried out along these roads, The presence of human settlements is the main dispersal route for propagules of exotic species to establish themselves in mountainous regions. This work suggests that the increase in tourism, the presence of trails and proximity to human settlements in remote mountain ecosystems facilitate the colonization and establishment of invasive species.
The most common studies on invasive species are carried out in more accessible parts of the territory, paying little attention to what happens in remote places such as mountain ecosystems. However, in 2005 the Mountain Invasion Research Network (MIREN) was created to study invasions at a global level in places with a greater altitudinal gradient and to evaluate the importance of the factors that facilitate this invasion. In the following research, sampling was carried out on 12 roads distributed in 4 regions of Chile (Central, Central-South, South and Subantarctic) with the t-Miren trail protocol, where 20 transects with 3 plots each were carried out along these roads, The presence of human settlements is the main dispersal route for propagules of exotic species to establish themselves in mountainous regions. This work suggests that the increase in tourism, the presence of trails and proximity to human settlements in remote mountain ecosystems facilitate the colonization and establishment of invasive species.
Description
Tesis presentada para optar al título profesional Ingeniera en Conservación de Recursos Naturales
Keywords
Plantas exóticas, Plantas de montaña, Cordillera de los Andes