Arid
DOI10.1093/conphys/cou006
High water-use efficiency and growth contribute to success of non-native Erodium cicutarium in a Sonoran Desert winter annual community
Kimball, Sarah1; Gremer, Jennifer R.2; Barron-Gafford, Greg A.3; Angert, Amy L.4; Huxman, Travis E.5; Venable, D. Lawrence2
通讯作者Kimball, Sarah
来源期刊CONSERVATION PHYSIOLOGY
ISSN2051-1434
出版年2014
卷号2期号:1
英文摘要

The success of non-native, invasive species may be due to release from natural enemies, superior competitive abilities, or both. In the Sonoran Desert, Erodium cicutarium has increased in abundance over the last 30 years. While native species in this flora exhibit a strong among-species trade-off between relative growth rate and water-use efficiency, E. cicutarium seems to have a higher relative growth rate for its water-use efficiency value relative to the pattern across native species. This novel trait combination could provide the non-native species with a competitive advantage in this water-limited environment. To test the hypothesis that E. cicutarium is able to achieve high growth rates due to release from native herbivores, we compared the effects of herbivory on E. cicutarium and its native congener, Erodium texanum. We also compared these two species across a range of environmental conditions, both in a common garden and in two distinct seasons in the field, using growth analysis, isotopic compositions and leaf-level gas exchange. Additionally, we compared the competitive abilities of the two Erodium species in a greenhouse experiment. We found no evidence of herbivory to either species. Physiological measurements in a common environment revealed that E. cicutarium was able to achieve high growth rates while simultaneously controlling leaf-level water loss. Non-native E. cicutarium responded to favourable conditions in the field with greater specific leaf area and leaf area ratio than native E. texanum. The non-native Erodium was a stronger competitor than its native congener in a green-house competition experiment. The ability to maintain relatively higher values of water-use efficiency: relative growth rate in comparison to the native flora may be what enables E. cictarium to outcompete native species in both wet and dry years, resulting in an increase in abundance in the highly variable Sonoran Desert.


英文关键词community structure competition enemy release hypothesis invasive species trade-offs winter annual plants
类型Article
语种英语
国家USA ; Canada
收录类别SCI-E
WOS记录号WOS:000209703800039
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences ; Physiology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology ; Physiology
来源机构University of Arizona
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181472
作者单位1.Univ Calif Irvine, Ctr Environm Biol, Irvine, CA 92697 USA;
2.Univ Arizona, EEB, Tucson, AZ 85721 USA;
3.Univ Arizona, Biosphere 2, Tucson, AZ 85721 USA;
4.Univ British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada;
5.Univ Calif Irvine, EEB, Irvine, CA 92697 USA
推荐引用方式
GB/T 7714
Kimball, Sarah,Gremer, Jennifer R.,Barron-Gafford, Greg A.,et al. High water-use efficiency and growth contribute to success of non-native Erodium cicutarium in a Sonoran Desert winter annual community[J]. University of Arizona,2014,2(1).
APA Kimball, Sarah,Gremer, Jennifer R.,Barron-Gafford, Greg A.,Angert, Amy L.,Huxman, Travis E.,&Venable, D. Lawrence.(2014).High water-use efficiency and growth contribute to success of non-native Erodium cicutarium in a Sonoran Desert winter annual community.CONSERVATION PHYSIOLOGY,2(1).
MLA Kimball, Sarah,et al."High water-use efficiency and growth contribute to success of non-native Erodium cicutarium in a Sonoran Desert winter annual community".CONSERVATION PHYSIOLOGY 2.1(2014).
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