Arid
DOI10.1071/RJ14003
Life histories of two arid-zone shrubs change with differences in habitat, grazing and climate
Norman, P.1; Denham, R.1; Calvert, M. J.2
通讯作者Norman, P.
来源期刊RANGELAND JOURNAL
ISSN1036-9872
EISSN1834-7541
出版年2014
卷号36期号:3页码:249-257
英文摘要

Shrubs are an important component of vegetation throughout the world. They are particularly significant in semiarid environments where they can dominate, driving ecosystem structure and functioning, and shaping land use. Life-history information was derived for Eremophila sturtii R. Br. and Dodonaea viscosa subsp. angustissima J.G. West, two widespread and common shrubs of semiarid eastern Australia. Plants growing under background climatic conditions took between 2 and 4 years to become established, attained the capacity to reproduce sexually at between 10 and 12 years, were in a sexually reproductive stage for between 17 and 28 years and lived an average maximum of 33-40 years. Under background climatic conditions between 70 and 80% of plants that entered the juvenile stage survived to sexual maturity while under severe drought this proportion fell to between 40 and 60%. Juvenile plants, particularly of E. sturtii, experienced the highest mortality under background conditions while, when exposed to severe drought, older plants, particularly D. viscosa subsp. angustissima in the intermediate stage, experienced the greatest increase in mortality, dying at more than twice the background rate. The high survival rates of E. sturtii and D. viscosa subsp. angustissima shown here, even under extreme drought conditions and in grazed-and ungrazed areas, help to explain why these shrub species have been observed to dominate vegetation in large areas of eastern Australia.


英文关键词development stage establishment life span mortality rate stage-classified matrix models
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000340270900005
WOS关键词ENCROACHMENT ; DYNAMICS ; DROUGHT ; PLANTS ; ECOSYSTEMS ; GRASSLANDS ; RANGELAND ; SAVANNA ; FIRE ; INVASIVENESS
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184629
作者单位1.Dept Sci Informat Technol Innovat & Arts, Brisbane, Qld 4001, Australia;
2.Dept Agr Fisheries & Forestry, Brisbane, Qld 4001, Australia
推荐引用方式
GB/T 7714
Norman, P.,Denham, R.,Calvert, M. J.. Life histories of two arid-zone shrubs change with differences in habitat, grazing and climate[J],2014,36(3):249-257.
APA Norman, P.,Denham, R.,&Calvert, M. J..(2014).Life histories of two arid-zone shrubs change with differences in habitat, grazing and climate.RANGELAND JOURNAL,36(3),249-257.
MLA Norman, P.,et al."Life histories of two arid-zone shrubs change with differences in habitat, grazing and climate".RANGELAND JOURNAL 36.3(2014):249-257.
条目包含的文件
文件名称/大小 资源类型 版本类型 开放类型 使用许可
Life histories of tw(288KB)期刊论文出版稿开放获取CC BY-NC-SA浏览
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Norman, P.]的文章
[Denham, R.]的文章
[Calvert, M. J.]的文章
百度学术
百度学术中相似的文章
[Norman, P.]的文章
[Denham, R.]的文章
[Calvert, M. J.]的文章
必应学术
必应学术中相似的文章
[Norman, P.]的文章
[Denham, R.]的文章
[Calvert, M. J.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Life histories of two arid-zone shrubs change with differences in habitat, grazing and climate.pdf
格式: Adobe PDF
此文件暂不支持浏览

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。