Updating the distribution of Nothofagus alessandrii:Impact of deforestation,fragmentation and connectivity  

作　　者：Antonio M.Cabrera-Ariza Carlos A.Rivas Miguel Aguilera-Peralta Rafael M.Navarro-Cerrillo Romulo Santelices-Moya 

机构地区：[1]Centro de Investigacion de Estudios Avanzados del Maule,Universidad Catolica del Maule,Avenida San Miguel 3605,Talca,3460000,Chile [2]Centro de Desarrollo del Secano Interior,Facultad de Ciencias Agrarias y Forestales,Universidad Catolica del Maule,Talca,3460000,Chile [3]Department of Forest Engineering,Laboratory of Dendrochronology,Silviculture and Global Change—DendrodatLab—ERSAF,University of Cordoba,Cordoba,Spain

出　　处：《Forest Ecosystems》2025年第1期136-145,共10页森林生态系统(英文版)

基　　金：funded by Universidad Cato lica del Maule;Proyectos de Investigacio n con Financiamiento Interno 2022 línea Fortalecimiento Fondecyt Regular。

摘　　要：Nothofagus alessandrii forests in the Mediterranean region of Chile face significant threats from deforestation,fragmentation,wildfires,and climate change.This study investigated the temporal and spatial dynamics of N.alessandrii populations and their implications for habitat fragmentation and connectivity.Using remote sensing data and geographic information system analysis,we assessed deforestation patterns,fragmentation metrics,and connectivity indices for different scenarios between 2009 and 2022.A reduction in the N.alessandrii forest area,extensive fragmentation,and decreased connectivity were observed over time,with wildfires exacerbating these trends.Reforestation simulations showed the potential of targeted restoration efforts to improve connectivity,especially when focusing on proximate patches.However,careful consideration of seed dispersal distances and wildfire risk is essential for effective reforestation planning.Overall,our findings underscore the urgent need for conservation interventions to preserve N.alessandrii forests and their biodiversity in Chile's coastal mountain ecosystems.A proactive and collaborative approach is essential to ensure the survival of these forests for future generations.

关 键 词：Ruil Endangered species Red list IUCN Conservation biology 

分 类 号：S718.5[农业科学—林学]