Arid
DOI10.1111/aec.12571
Contrasting intraspecific foliar trait responses to stressful conditions of two rhizomatous granite outcrop species at different scales in southwestern Australia
Ottaviani, Gianluigi1; Keppel, Gunnar2,3
通讯作者Ottaviani, Gianluigi
来源期刊AUSTRAL ECOLOGY
ISSN1442-9985
EISSN1442-9993
出版年2018
卷号43期号:3页码:249-256
英文摘要

Plants respond to changing environmental conditions, and their ability to adjust intra-specifically to such shifts represents an ecological and evolutionary advantage. We studied seven plant traits for two common, rhizomatous granite outcrop species (the fern Cheilanthes austrotenuifolia, and the herb Stypandra glauca) with seasonal foliage during the cooler, wetter winter months at seven sites across an aridity gradient in southwestern Australia. We investigated trait patterns at regional and habitat scale, by investigating changes in trait values along the aridity gradient, and by comparing two different habitats types (sun-exposed and sheltered). We expected plants occurring in more arid sites and highly irradiated, shallow-soil (sun-exposed) habitats, to exhibit traits indicative of more conservative resource acquisition, retention and use strategies. At the habitat scale, we found support for our prediction, with plants in more stressful, sun-exposed habitats showing traits’ values associated with more conservative strategies (especially for water), such as smaller plants, denser leaves, higher foliar delta(13) C and C/N. However, at the regional scale many traits displayed the opposite pattern, suggesting less conservative resource acquisition in more arid sites. This evidence was particularly pronounced for specific leaf area (SLA), which exhibited a significant, positive relationship with increasing aridity. We suggest that the unexpected regional trends in foliar traits relate to shorter lived, faster growing leaves linked to highly efficient resource acquisition and use strategies during the shorter growing season in the more arid regions. These highly exploitative strategies may enable plants to avoid climate extremes, that is, hot and dry periods in the more arid sites. Our findings of contrasting foliar traits responses at different scales support the importance of multi-scale approaches to quantify the role of intraspecific trait variability.


英文关键词aridity gradient drought avoidance functional traits global biodiversity hotspot intraspecific trait variability multi-scale approach seasonal growth specific leaf area
类型Article
语种英语
国家Czech Republic ; Australia ; Germany
收录类别SCI-E
WOS记录号WOS:000430463400003
WOS关键词PLANT FUNCTIONAL DIVERSITY ; COMMUNITY-LEVEL ; ENVIRONMENTAL GRADIENTS ; ECONOMICS SPECTRUM ; FLORISTIC REGION ; STRATEGY SCHEME ; LEAF-AREA ; BIODIVERSITY ; VALUES ; CONSERVATION
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/2XILL650/207999
作者单位1.Acad Sci Czech Republ, Inst Bot, 135 Dukelska, CZ-37982 Trebon, Czech Republic;
2.Univ South Australia, Sch Nat & Built Environm, Adelaide, SA, Australia;
3.Univ Gottingen, Biodivers Macroecol & Biogeog Grp, Fac Forest Sci & Forest Ecol, Gottingen, Germany
推荐引用方式
GB/T 7714
Ottaviani, Gianluigi,Keppel, Gunnar. Contrasting intraspecific foliar trait responses to stressful conditions of two rhizomatous granite outcrop species at different scales in southwestern Australia[J],2018,43(3):249-256.
APA Ottaviani, Gianluigi,&Keppel, Gunnar.(2018).Contrasting intraspecific foliar trait responses to stressful conditions of two rhizomatous granite outcrop species at different scales in southwestern Australia.AUSTRAL ECOLOGY,43(3),249-256.
MLA Ottaviani, Gianluigi,et al."Contrasting intraspecific foliar trait responses to stressful conditions of two rhizomatous granite outcrop species at different scales in southwestern Australia".AUSTRAL ECOLOGY 43.3(2018):249-256.
条目包含的文件
条目无相关文件。
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
[Ottaviani, Gianluigi]的文章
[Keppel, Gunnar]的文章
百度学术
百度学术中相似的文章
[Ottaviani, Gianluigi]的文章
[Keppel, Gunnar]的文章
必应学术
必应学术中相似的文章
[Ottaviani, Gianluigi]的文章
[Keppel, Gunnar]的文章
相关权益政策
暂无数据
收藏/分享

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。