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| A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe | |
Tian, Qiuying; Liu, Nana2; Bai, Wenming ; Li, Linghao; Chen, Jiquan3,4; Reich, Peter B.; Yu, Qiang7; Guo, Dali10; Smith, Melinda D.; Knapp, Alan K.; Cheng, Weixin7,11; Lu, Peng; Gao, Yan; Yang, An; Wang, Tianzuo; Li, Xin; Wang, Zhengwen7; Ma, Yibing12; Han, Xingguo7; Zhang, Wen-Hao
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| 2016 | |
| Source Publication | ECOLOGY
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| ISSN | 0012-9658 |
| Volume | 97Issue:1Pages:65-74 |
| Abstract | Loss of plant diversity with increased anthropogenic nitrogen (N) deposition in grasslands has occurred globally. In most cases, competitive exclusion driven by preemption of light or space is invoked as a key mechanism. Here, we provide evidence from a 9-yr N-addition experiment for an alternative mechanism: differential sensitivity of forbs and grasses to increased soil manganese (Mn) levels. In Inner Mongolia steppes, increasing the N supply shifted plant community composition from grass-forb codominance (primarily Stipa krylovii and Artemisia frigida, respectively) to exclusive dominance by grass, with associated declines in overall species richness. Reduced abundance of forbs was linked to soil acidification that increased mobilization of soil Mn, with a 10-fold greater accumulation of Mn in forbs than in grasses. The enhanced accumulation of Mn in forbs was correlated with reduced photosynthetic rates and growth, and is consistent with the loss of forb species. Differential accumulation of Mn between forbs and grasses can be linked to fundamental differences between dicots and monocots in the biochemical pathways regulating metal transport. These findings provide a mechanistic explanation for N-induced species loss in temperate grasslands by linking metal mobilization in soil to differential metal acquisition and impacts on key functional groups in these ecosystems. |
| Keyword | Artemisia frigida forbs and grasses Inner Mongolia China manganese mobilization and acquisition nitrogen deposition photosynthesis soil acidification species richness Stipa krylovii temperate steppe |
| Subject Area | Ecology |
| DOI | 10.1890/15-0917.1 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | NUTRIENT ENRICHMENT ; ACIDIC GRASSLANDS ; BIODIVERSITY LOSS ; REGIONAL TRENDS ; DIVERSITY ; FERTILIZATION ; LIGHT ; ACIDIFICATION ; COMPETITION ; THRESHOLDS |
| WOS Research Area | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS ID | WOS:000369852600009 |
| Publisher | WILEY |
| Subtype | Article |
| Publication Place | HOBOKEN |
| EISSN | 1939-9170 |
| Funding Organization | Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31130008, 31272234, 31430016, 41320104002] ; National Basic Research Program of ChinaNational Basic Research Program of China [2010CB833502] |
| Corresponding Author Email | whzhang@ibcas.ac.cn |
| OA | Green Published |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/25221 |
| Collection | 植被与环境变化国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Res Network Global Change Biol, Beijing Inst Life Sci, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Int Ctr Ecol Meteorol & Environm IceMe, Nanjing 210044, Jiangsu, Peoples R China 5.Michigan State Univ, CGCEO Geog, E Lansing, MI 48823 USA 6.Reich, Peter B.] Univ Minnesota, Dept Forest Resources, St Paul, MN 55108 USA 7.Reich, Peter B.] Univ Western Sydney, Hawkesbury Inst Environm, Penrith, NSW 2753, Australia 8.Chinese Acad Sci, State Key Lab Forest & Soil Ecol, Inst Appl Ecol, Shenyang 110164, Peoples R China 9.Yu, Qiang; Smith, Melinda D.; Knapp, Alan K.] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 10.Yu, Qiang; Smith, Melinda D.] Chinese Acad Sci, Grad Degree Program Ecol, Beijing 100101, Peoples R China 11.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Synth Res Ctr, Chinese Ecosyst Res Network,Inst Geog Sci & Nat R, Beijing 100101, Peoples R China 12.Univ Calif Santa Cruz, Environm Studies, Santa Cruz, CA 95064 USA 13.Chinese Acad Agr Sci, Natl Soil Fertil & Fertilizer Effects Long Term M, Beijing 100081, Peoples R China |
| Recommended Citation GB/T 7714 | Tian, Qiuying,Liu, Nana,Bai, Wenming,et al. A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe[J]. ECOLOGY,2016,97(1):65-74. |
| APA | Tian, Qiuying.,Liu, Nana.,Bai, Wenming.,Li, Linghao.,Chen, Jiquan.,...&Zhang, Wen-Hao.(2016).A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe.ECOLOGY,97(1),65-74. |
| MLA | Tian, Qiuying,et al."A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe".ECOLOGY 97.1(2016):65-74. |
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| Tian-2016-A novel so（2194KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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