Arid
DOI10.3732/ajb.0900242
PHENOTYPIC PLASTICITY AND PRECIPITATION RESPONSE IN SONORAN DESERT WINTER ANNUALS
Angert, Amy L.1,2; Horst, Jonathan L.1; Huxman, Travis E.1; Venable, D. Lawrence1
通讯作者Angert, Amy L.
来源期刊AMERICAN JOURNAL OF BOTANY
ISSN0002-9122
出版年2010
卷号97期号:3页码:405-411
英文摘要

Temporal environmental variation has profound influences on population dynamics and community structure. Examination of functional traits that influence resource uptake and allocation can illuminate how co-occurring species translate environmental variation into different demographic outcomes, yet few studies have considered interspecific differences in trait plasticity. We experimentally manipulated soil moisture to test the hypothesis that differences in morphological plasticity contribute to species differences in demographic response to unpredictable precipitation in Sonoran Desert winter annual plants. We compared plasticity of leaf traits and biomass allocation between Pectocarya recurvata (Boraginaceae) and Stylocline micropoides (Asteraceae), co-occurring species that differ in long-term demographic patterns. The species with highly variable population dynamics, Stylocline, had striking increases in leaf area and root biomass in response to an experimental increase in soil moisture. In contrast, the species with buffered long-term population dynamics, Pectocarya, did not differ in leaf morphology or biomass allocation between soil moisture treatments. Regardless of water treatment, Pectocarya had earlier reproductive phenology and greater fecundity than Stylocline, suggesting that differences in the timing of the phenological transitions from vegetative to reproductive growth may affect species’ responses to precipitation pulses. Combining long-term observations with experimental manipulations provides a window into the functional underpinnings and demographic consequences of trait plasticity.


英文关键词Asteraceae biomass allocation Boraginaceae functional trait Pectocarya recurvata pulse response species coexistence specific leaf area Stylocline micropoides
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000275106800004
WOS关键词RELATIVE GROWTH-RATE ; FUNCTIONAL TRAITS ; UNBALANCED DATA ; FLOWERING TIME ; DROUGHT STRESS ; PLANT ; COMPONENTS ; COEXISTENCE ; ALLOCATION ; EVOLUTION
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构University of Arizona ; Colorado State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/163118
作者单位1.Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA;
2.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA
推荐引用方式
GB/T 7714
Angert, Amy L.,Horst, Jonathan L.,Huxman, Travis E.,et al. PHENOTYPIC PLASTICITY AND PRECIPITATION RESPONSE IN SONORAN DESERT WINTER ANNUALS[J]. University of Arizona, Colorado State University,2010,97(3):405-411.
APA Angert, Amy L.,Horst, Jonathan L.,Huxman, Travis E.,&Venable, D. Lawrence.(2010).PHENOTYPIC PLASTICITY AND PRECIPITATION RESPONSE IN SONORAN DESERT WINTER ANNUALS.AMERICAN JOURNAL OF BOTANY,97(3),405-411.
MLA Angert, Amy L.,et al."PHENOTYPIC PLASTICITY AND PRECIPITATION RESPONSE IN SONORAN DESERT WINTER ANNUALS".AMERICAN JOURNAL OF BOTANY 97.3(2010):405-411.
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