Arid
DOI10.1007/s11356-017-8879-7
Long-term simulated nitrogen deposition alters the plant cover dynamics of a Mediterranean rosemary shrubland in Central Spain through defoliation
Cabal, Ciro1,2; Ochoa-Hueso, Raul3; Esther Perez-Corona, Maria4; Manrique, Esteban1
通讯作者Cabal, Ciro
来源期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
EISSN1614-7499
出版年2017
卷号24期号:34页码:26227-26237
英文摘要

Nitrogen (N) deposition due to anthropogenic pollution is a major driver of the global biodiversity loss. We studied the effect of experimental N and phosphorus (P) fertilization (0, 10, 20, and 50 kg N ha(-1) year(-1) and 14 kg P ha(-1) year(-1) over the background deposition levels) on plant cover dynamics of a rosemary (Rosmarinus officinalis L.) shrubland after 8 years of nutrient addition in a semiarid Mediterranean ecosystem from Central Spain. We specifically aimed at testing whether N deposition has the potential to influence the observed expanding trend of woody vegetation into areas dominated by grassland, biological soil crusts, and bare soil. Our results show that N addition loads above 10 kg N ha(-1) year(-1) reverted the cover dynamics of shrubs. Under N addition conditions, N was no longer a limiting nutrient and other elements, especially P and calcium, determined the seasonal growth of young twigs. Interestingly, N fertilization did not inhibit the growth of young shoots; our estimates point to a reduced rosemary leaf lifespan that is driving individuals to death. This may be triggered by long-term accumulation of N compounds in leaves, suggesting the need to consider the old organs and tissues in long-lived perennial plants, where N toxicity effects could be more mediated by accumulation processes. Shrublands are a widely distributed ecosystem type in biodiverse Mediterranean landscapes, where shrubs play a key role as nurse plants. Therefore, the disappearance of shrublands may accelerate the biodiversity loss associated with other global change drivers, hamper the recruitment of seedlings of woody species, and, as a consequence, accelerate desertification.


英文关键词Defoliation Mediterranean ecosystems Nitrogen deposition Phosphorus Leaf lifespan Semiarid shrublands Shrub cover Long-termnutrient addition
类型Article
语种英语
国家Spain ; USA
收录类别SCI-E
WOS记录号WOS:000417372600008
WOS关键词SEMIARID ENVIRONMENT ; TREE SEEDLINGS ; BIODIVERSITY HOTSPOTS ; RETAMA SPHAEROCARPA ; STIPA-TENACISSIMA ; SEED BANK ; FACILITATION ; ECOSYSTEMS ; UNDERSTOREY ; RESPONSES
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198802
作者单位1.CSIC, Museo Nacl Ciencias Nat, Serrano 115 Dpdo, Madrid 28006, Spain;
2.Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA;
3.Univ Autonoma Madrid, Dept Ecol, C Darwin 2, E-28049 Madrid, Spain;
4.Univ Complutense Madrid, Dept Ecol, Fac Biol, C Jose Antonio Novais 2, E-28040 Madrid, Spain
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GB/T 7714
Cabal, Ciro,Ochoa-Hueso, Raul,Esther Perez-Corona, Maria,et al. Long-term simulated nitrogen deposition alters the plant cover dynamics of a Mediterranean rosemary shrubland in Central Spain through defoliation[J],2017,24(34):26227-26237.
APA Cabal, Ciro,Ochoa-Hueso, Raul,Esther Perez-Corona, Maria,&Manrique, Esteban.(2017).Long-term simulated nitrogen deposition alters the plant cover dynamics of a Mediterranean rosemary shrubland in Central Spain through defoliation.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(34),26227-26237.
MLA Cabal, Ciro,et al."Long-term simulated nitrogen deposition alters the plant cover dynamics of a Mediterranean rosemary shrubland in Central Spain through defoliation".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.34(2017):26227-26237.
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