Affiliation:
1. Departamento de Botánica, Facultad de Ciencias Naturales & Oceanográficas Universidad de Concepción Concepción Chile
2. Institute of Ecology and Biodiversity (IEB) Concepción Chile
3. Departamento de Ciencias y Tecnología Vegetal, Escuela de Ciencias y Tecnologías Universidad de Concepción Los Ángeles Chile
4. Centro Intihuasi, Instituto de Investigaciones Agropecuarias La Serena Chile
5. International Union for Conservation of Nature, Species Survival Commission, Cactus and Succulent Plants Specialist Group Cambridge UK
6. Department of Ecology and Evolutionary Biology The University of Arizona Tucson Arizona USA
7. Centro de Estudios Territoriales Universidad de Los Andes Santiago Chile
8. Millennium Institute Biodiversity of Antarctic and Sub‐Antarctic Ecosystems Santiago Chile
Abstract
AbstractIn this era of a global biodiversity crisis, vascular plants are facing unprecedented extinction rates. We conducted an assessment of the extinction risk of 32 species and 7 subspecies of Copiapoa, a genus endemic to Chile's fog‐dependent coastal Atacama Desert. We applied the International Union for Conservation of Nature Red List Categories and Criteria enhanced by expert insights and knowledge. Our primary aim was to analyze the impact of trade and poaching on their extinction risk. We employed machine learning models, including multinomial logistic regression (MLR), decision tree (DT), and random forest (RF), to analyze the relationships between conservation status and various factors. These factors encompassed trade and poaching activities, landscape condition, human footprint, monthly cloud frequency, and biological traits such as evolutionary distinctiveness and maximum diameter. Seven taxa had an area of occupancy (AOO) of <10 km2, 10 additional taxa had an AOO of <20 km2, and 16 taxa had an AOO of ≤100 km2. This reassessment exposed a critical level of extinction risk for the genus; 92% of the taxa were classified as threatened, 41% as critically endangered, 41% as endangered, and 10% as vulnerable. MLR, DT, and RF exhibited accuracies of 0.784, 0.730, and 0.598, respectively, and identified trade and poaching pressure and landscape condition as the primary drivers of extinction risk. Our assessment of Copiapoa showed trade, poaching, habitat degradation, and their synergic impacts as the main drivers of the genus’ extinction risk. Our results highlight the urgent need for nations to develop and enforce strategies to monitor and control trade and poaching pressure because these factors are crucial for the long‐term persistence of desert plants.
Funder
Fondo Nacional de Desarrollo Científico y Tecnológico
Reference103 articles.
1. Spatial patterns of evolutionary diversity in Cactaceae show low ecological representation within protected areas
2. Low level of anthropization linked to harsh vertebrate biodiversity declines in Amazonia
3. CITES Secretariat & United Nations Environment Programme World Conservation Monitoring Centre (UNEP‐WCMC). (2022).A guide to using the CITES Trade Database. Version 9.CITES. Cambridge United Kingdom.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献