检索结果-南通市图书馆

Effect of elevation on floristic diversity,life forms and chorotypes in the AlHada mountain escarpment,Saudi Arabia

Journal of Mountain Science 2022年第10期19卷 2806-2816页

作者： Mohamed A.FADL Hatim M.AL-YASI Emad A.ALSHERIF Department of Biology College of ScienceTaif UniversityTaif 21944Saudi Arabia Department of Biology College of Science and ArtsUniversity of JeddahJeddah 21921Saudi Arabia Department of Botany and Microbiology Faculty of ScienceBeni-Suef UniversityBeni Suef 62521Egypt

Mountains are biodiversity hotspots,and due to their unique microclimatic circumstances,they host a vast range of endemic *** are two main hypotheses,the rapoport and the mid-domain effect hypotheses,which explain how elevation and species richness are *** current study was conducted in the Al-Hada escarpment,which is a unique area in the *** is located on the border of Eurasia and Africa,where there are a lot of plant species from both *** study aimed to detect the effect of elevation on the floristic composition of the study *** obtained results showed that the Al-Hada escarpment flora consists of 297 species belonging to 194 genera and fifty-seven distinct *** two families,Poaceae and Asteracae,had 22%of the whole recorded *** obtained results showed that with increasing elevation,the numbers of species,genera,and families increased,in accordance with the rapoport *** numbers of families increased by 62%from the lowest elevation to the highest one,while the numbers of both species and genera increased by more than *** exhibited the maximum number,which was 44%,and Chamaephytes came in second with 25%.Phanerophytes and hemicryptophytes made up 13%and 11%of all life forms,respectively,while geophytes made up just 7%.Monoregional elements represented 33.2%of the total recorded species,where Saharo-Sindian species had the most monoregional species,accounting for around 13%of the total *** the highest elevation,succulents accounted for 7.6%of the research area,whereas Nfixing plants accounted for 6.2%.At the highest elevation,they had the lowest value,and at the middle elevation,they had the highest *** the rise in elevation,the neotropical,endemic,and Mediterranean elements *** and Nfixing species did not show a clear relationship with the elevation but exhibited the lowest value at the highest elevation,and vice *** and geophytes increased while th

关键词： rapoport hypothesis Mid-domain effect Arid land Mountain Altitude Al-Hada escarpment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：