Arid
DOI10.1007/s11258-017-0749-3
Tracking the impact of drought on functionally different woody plants in a Mediterranean scrubland ecosystem
Gazol, Antonio; Sanguesa-Barreda, Gabriel; Granda, Elena; Julio Camarero, J.
通讯作者Gazol, Antonio
来源期刊PLANT ECOLOGY
ISSN1385-0237
EISSN1573-5052
出版年2017
卷号218期号:8页码:1009-1020
英文摘要

Climate warming is predicted to amplify drought stress. Thus, it is important to understand how coexisting plant species respond to severe droughts. Here we study how seven Mediterranean woody plant species with different evolutionary history and functional characteristics (Pinus halepensis Mill., Juniperus phoenicea L., Pistacia lentiscus L., Rhamnus lycioides L., Rosmarinus officinalis L., Genista scorpius (L.) DC., and Globularia alypum L.) responded to a severe winter drought during 2011-2012 in Spain. The study site is located in the Valcuerna valley, Monegros desert, northeastern Spain. We evaluated how the drought affected the annual growth-ring formation of the species by using dendrochronology and quantified the intensity of drought-induced defoliation and mortality and compared it between species and groups of species with different evolutionary history. Radial growth of all species was strongly reduced by the 2012 drought. The pre-Mediterranean species (P. halepensis, J. phoenicea, P. lentiscus and R. lycioides) reduced growth more than the Mediterranean species (R. officinalis, G. scorpius and G. alypum). Defoliation was significantly higher in pre-Mediterranean than in Mediterranean species. When species were analyzed separately we found that P. halepensis was the species with the highest growth reduction but J. phoenicea was defoliated more severely and showed higher mortality rates as a consequence of drought. In the case of the Mediterranean shrubs, drought-induced mortality was only noticeable in R. officinalis. Drought impacted growth of all species but this did not induce mortality in all of them. Growth reduction was dependent on evolutionary history. However, functional characteristics of the species such as leaf stomatal regulation and root architecture may be more important than evolutionary history on explaining drought-induced mortality. Indeed, species with shallow root systems such as J. phoenicea and R. officinalis were the most adversely affected by the drought.


英文关键词Annual growth rings Defoliation Dendrochronology Growth decline Mortality Shrub
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000406652800009
WOS关键词DIE-OFF ; CLIMATE ; WATER ; MORTALITY ; TREES ; SHRUBS ; GROWTH ; STRATEGIES ; RESPONSES ; FORESTS
WOS类目Plant Sciences ; Ecology ; Forestry
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201547
作者单位CSIC, IPE, Avda Montanana 1005, Zaragoza 50192, Spain
推荐引用方式
GB/T 7714
Gazol, Antonio,Sanguesa-Barreda, Gabriel,Granda, Elena,et al. Tracking the impact of drought on functionally different woody plants in a Mediterranean scrubland ecosystem[J],2017,218(8):1009-1020.
APA Gazol, Antonio,Sanguesa-Barreda, Gabriel,Granda, Elena,&Julio Camarero, J..(2017).Tracking the impact of drought on functionally different woody plants in a Mediterranean scrubland ecosystem.PLANT ECOLOGY,218(8),1009-1020.
MLA Gazol, Antonio,et al."Tracking the impact of drought on functionally different woody plants in a Mediterranean scrubland ecosystem".PLANT ECOLOGY 218.8(2017):1009-1020.
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