Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/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
![]() |
ISSN | 1442-9985 |
EISSN | 1442-9993 |
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。 |
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。