Age structure and static life tables of the endangered Juniperus phoenicea L. in North Sinai Mountains, Egypt:implication for conservation

作     者：Emad A.FARAHAT Emad A.FARAHAT

作者机构：Botany and Microbiology DepartmentFaculty of ScienceHelwan UniversityCairoEgypt 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2020年第17卷第9期

页      面：2170-2178页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：Ministry of Higher Education and Scientific Research, MHE&SR Ministry of Higher Education and Scientific Research, MHESR 

主　　题：Juniperus phoenicea Age distribution Life history Mortality Endangered plant Sinai 

摘      要：Studying the population ecology of endangered plants provides important baseline information for its monitoring and *** phoenicea *** an endangered species in arid ecosystems in Africa and the Middle *** static life tables,survival curve and age structure of *** populations from two mountains in North Sinai,Egypt(Gabal(G.)El-Halal and ***-Maghara)were *** each mountain,fifteen plots were selected,and field measurements such as stand density,tree height,and crown diameter were ***,44 trees were cored and crossdated according to standard dendrochronological *** results showed that the tree ages ranged from 50 to 262 years at ***-Halal and 96 to431 years at *** *** individuals dominated the study area,with only a few individuals being younger than 100 ***,seedling recruitment was extremely *** the studied *** populations showed high mortality rates among both old and young individuals,there is an imminent need for establishing a conservation program to prevent its extinction in the ***,management and conservation efforts should be made to minimize human disturbance and protect the relic habitats of this endangered species at its southern distribution limits in Africa.