Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14914 |
Simulated climate change decreases nutrient resorption from senescing leaves | |
Prieto, Ivan; Querejeta, Jose, I | |
2019-12-10 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
![]() |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Spain |
英文摘要 | Nutrient resorption is the process whereby plants recover nutrients from senescing leaves and reallocate them to storage structures or newer tissues. Elemental resorption of foliar N and P has been shown to respond to temperature and precipitation, but we know remarkably little about the influence of warming and drought on the resorption of these and other essential plant macro- and micronutrients, which could alter the ability of species to recycle their nutrients. We conducted a 5 year manipulative field study to simulate predicted climate change conditions and studied the effects of warming (W), rainfall reduction (RR), and their combination (W+RR) on nutrient resorption efficiency in five coexisting shrub species in a semiarid shrubland. Both mature and senesced leaves showed significant reductions in their nutrient contents and an altered stoichiometry in response to climate change conditions. Warming (W, W+RR) reduced mature leaf N, K, Ca, S, Fe, and Zn and senesced leaf N, Ca, Mg, S, Fe, and Zn contents relative to ambient temperature conditions. Warming increased mature leaf C/N ratios and decreased N/P and C/P ratios and increased senesced leaf C/N and C/P ratios. Furthermore, W and W+RR reduced nutrient resorption efficiencies for N (6.3%), K (19.8%), S (70.9%) and increased Ca and Fe accumulation in senesced leaves (440% and 35.7%, respectively) relative to the control treatment. Rainfall reduction decreased the resorption efficiencies of N (6.7%), S (51%), and Zn (46%). Reductions in nutrient resorption efficiencies with warming and/or rainfall reduction were rather uniform and consistent across species. The negative impacts of warming and rainfall reduction on foliar nutrient resorption efficiency will likely cause an impairment of plant nutrient budgets and fitness across coexisting native shrubs in this nutrient-poor habitat, with probable implications for key ecosystem functions such as reductions in nutrient retention in vegetation, litter decomposition, and nutrient cycling rates. |
英文关键词 | drought green leaves gypsum ecosystems plant stoichiometry plant-climate interactions resorption efficiency senesced leaves warming |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000501589300001 |
WOS关键词 | PLANT COMMUNITY PATTERNS ; LITTER DECOMPOSITION ; NITROGEN RESORPTION ; QUERCUS-VARIABILIS ; MINERAL-NUTRITION ; LEAF NUTRIENTS ; EFFICIENCY ; STOICHIOMETRY ; RESPONSES ; SOIL |
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/225321 |
专题 | 环境与发展全球科技态势 |
作者单位 | CSIC, CEBAS, Dept Conservac Suelos & Agua, Murcia, Spain |
推荐引用方式 GB/T 7714 | Prieto, Ivan,Querejeta, Jose, I. Simulated climate change decreases nutrient resorption from senescing leaves[J]. GLOBAL CHANGE BIOLOGY,2019. |
APA | Prieto, Ivan,&Querejeta, Jose, I.(2019).Simulated climate change decreases nutrient resorption from senescing leaves.GLOBAL CHANGE BIOLOGY. |
MLA | Prieto, Ivan,et al."Simulated climate change decreases nutrient resorption from senescing leaves".GLOBAL CHANGE BIOLOGY (2019). |
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。
修改评论