Identificación de sitios prioritarios de restauración y protección para la conectividad de pudu puda en la cordillera de la costa entre las regiones de maule a Biobío.
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Date
2023
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Universidad de Concepción
Abstract
El objetivo general de este estudio fue generar un modelo de conectividad potencial para P. puda, en la Cordillera de la Costa de las regiones del Maule, Ñuble y Biobío con el fin de identificar oportunidades de protección y restauración ecológica que aseguren la conectividad funcional de la especie en un paisaje altamente transformado. La conectividad fue modelada mediante la teoría de circuitos y rutas de menor costo a través del software ArcGIS 10.4.1 utilizando las herramientas Linkage Mapper y Gnarly Landscape Utilities. Además, se elaboraron índices para la priorización de los nodos y uniones según su importancia para la protección y restauración respectivamente. Los principales resultados fueron que la red ecológica del P. puda se encuentra dividida en 14 componentes, donde el de mayor proporción representa un 65% del total y el resto menor al 15% cada uno, El nodo de mayor superficie representa el 12% de la red. Los sitios prioritarios tanto de protección como de restauración están ubicados en el componente de mayor extensión de la red ecológica, en las comunas de Pelluhue, Cauquenes y Cobquecura. Existen áreas protegidas dentro de la red, pero cubren solo uno de los ocho sitios que resultaron con mayor prioridad de protección. Los 19 sitios prioritarios de restauración son de alto flujo y gran resistencia del paisaje. Se concluye que es urgente implementar acciones de protección y restauración para asegurar la movilidad de la especie en paisajes altamente fragmentados.
The general objective of this study was to generate a model of potential connectivity for P. puda in the Coastal Mountain Range of the Maule, Ñuble and Biobío regions in order to identify opportunities for ecological protection and restoration to ensure the functional connectivity of the species in a highly transformed landscape. Connectivity was modeled by means of circuit theory and least-cost routes through ArcGIS 10.4.1 software using the Linkage Mapper and Gnarly Landscape Utilities tools. In addition, indices were developed for the prioritization of nodes and links according to their importance for protection and restoration respectively. The main results were that the ecological network of P. puda is divided into 14 components, where the largest component represents 65% of the total and the rest less than 15% each. The node with the largest surface area represents 12% of the network. The priority sites for both protection and restoration are located in the largest component of the ecological network, in the communes of Pelluhue, Cauquenes and Cobquecura. There are protected areas within the network, but they cover only one of the eight sites with the highest protection priority. The 19 restoration priority sites are of high flow and high landscape resistance. It is concluded that it is urgent to implement protection and restoration actions to ensure the mobility of the species in highly fragmented landscapes.
The general objective of this study was to generate a model of potential connectivity for P. puda in the Coastal Mountain Range of the Maule, Ñuble and Biobío regions in order to identify opportunities for ecological protection and restoration to ensure the functional connectivity of the species in a highly transformed landscape. Connectivity was modeled by means of circuit theory and least-cost routes through ArcGIS 10.4.1 software using the Linkage Mapper and Gnarly Landscape Utilities tools. In addition, indices were developed for the prioritization of nodes and links according to their importance for protection and restoration respectively. The main results were that the ecological network of P. puda is divided into 14 components, where the largest component represents 65% of the total and the rest less than 15% each. The node with the largest surface area represents 12% of the network. The priority sites for both protection and restoration are located in the largest component of the ecological network, in the communes of Pelluhue, Cauquenes and Cobquecura. There are protected areas within the network, but they cover only one of the eight sites with the highest protection priority. The 19 restoration priority sites are of high flow and high landscape resistance. It is concluded that it is urgent to implement protection and restoration actions to ensure the mobility of the species in highly fragmented landscapes.
Description
Tesis presentada para optar al título profesional de Ingeniero en Conservación de Recursos Naturales
Keywords
Pudú, Habitat (Ecología), Gestión ambiental Chile