Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13763 |
Shift in community structure in an early-successional Mediterranean shrubland driven by long-term experimental warming and drought and natural extreme droughts | |
Liu, Daijun1,2; Estiarte, Marc1,2; Ogaya, Roma1,2; Yang, Xiaohong3; Penuelas, Josep1,2 | |
2017-10-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Peoples R China |
英文摘要 | Global warming and recurring drought are expected to accelerate water limitation for plant communities in semiarid Mediterranean ecosystems and produce directional shifts in structure and composition that are not easily detected, and supporting evidence is scarce. We conducted a long-term (17 years) nocturnal-warming (+0.6 degrees C) and drought (-40% rainfall) experiments in an early-successional Mediterranean shrubland to study the changes in community structure and composition, contrasting functional groups and dominant species, and the superimposed effects of natural extreme drought. Species richness decreased in both the warming and drought treatments. Responses to the moderate warming were associated with decreases in herb abundance, and responses to the drought were associated with decreases in both herb and shrub abundances. The drought also significantly decreased community diversity and evenness. Changes in abundance differed between herbs (decreases) and shrubs (increases or no changes). Both warming and drought, especially drought, increased the relative species richness and abundance of shrubs, favoring the establishment of shrubs. Both warming and drought produced significant shifts in plant community composition. Experimental warming shifted the community composition from Erica multiflora toward Rosmarinus officinalis, and drought consistently shifted the composition toward Globularia alypum. The responses in biodiversity(e.g., community biodiversity, changes of functional groups and compositional shifts) were also strongly correlated with atmospheric drought (SPEI) in winter-spring and/or summer, indicating sensitivity to water limitation in this early-successional Mediterranean ecosystem, especially to natural extreme droughts. Our results suggest that the shifts in species assembles and community diversity and composition are accelerated by the long-term nocturnal-warming and drought, combined with natural severe droughts, and that the magnitude of the impacts of climate change is also correlated with the successional status of ecosystem. The results thus highlight the necessity for assessing the impacts on ecosystemic functioning and services and developing effective measures for conserving biodiversity. |
英文关键词 | community diversity composition shifts frequent droughts functional groups global warming long-term climatic experiments mediterranean ecosystems species richness |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410642100025 |
WOS关键词 | SIMULATED CLIMATE-CHANGE ; TERRESTRIAL ECOSYSTEMS ; GLOBAL CHANGE ; PRIMARY PRODUCTIVITY ; ERICA-MULTIFLORA ; BIODIVERSITY ; MANIPULATION ; RESPONSES ; IMPACTS ; SENSITIVITY |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17221 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.CSIC, Global Ecol Unit CREAF CSIC UAB, Bellaterra, Spain; 2.CREAF, Cerdanyola Del Valles, Catalonia, Spain; 3.Southwest Univ, Minist Educ, Key Lab Hort Sci Southern Mountainous Reg, Chongqing, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Daijun,Estiarte, Marc,Ogaya, Roma,et al. Shift in community structure in an early-successional Mediterranean shrubland driven by long-term experimental warming and drought and natural extreme droughts[J]. GLOBAL CHANGE BIOLOGY,2017,23(10). |
APA | Liu, Daijun,Estiarte, Marc,Ogaya, Roma,Yang, Xiaohong,&Penuelas, Josep.(2017).Shift in community structure in an early-successional Mediterranean shrubland driven by long-term experimental warming and drought and natural extreme droughts.GLOBAL CHANGE BIOLOGY,23(10). |
MLA | Liu, Daijun,et al."Shift in community structure in an early-successional Mediterranean shrubland driven by long-term experimental warming and drought and natural extreme droughts".GLOBAL CHANGE BIOLOGY 23.10(2017). |
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