College of Agriculture, Henan University of Science and Technology,
Luoyang, 471003, P.R. China
2
Northwest Institute of Plateau Biology, Chinese Academy of Sciences (CAS),
59#, Xiguan Street, Xining 810001, Qinghai, P.R. China
CORRESPONDING AUTHOR
X. F. Yi
College of Agriculture, Henan University of Science and Technology,
Luoyang, 471003, P.R. China; Northwest Institute of Plateau Biology, Chinese Academy of Sciences (CAS),
59#, Xiguan Street, Xining 810001, Qinghai, P.R. China
Stable carbon and nitrogen isotope ratios were measured in plant populations and plateau pikas
to determine enrichment in stable isotopes of three alpine meadow ecosystems at different elevations
in the Qinghai-Tibet Plateau. The results indicated that stable carbon isotope signatures of plant
populations at the three locations showed significant variations, δ13C of plant populations showed
an enrichment of 0.86‰ per 1000 m over the linear proportion of the altitudinal response, while
stable nitrogen isotopes showed no apparent difference. The stable nitrogen isotopes of plateau pikas
became significantly isotopically heavier along altitudinal gradients and showed an enrichment
of 3.17‰/km. Stable carbon isotopes showed no significance, however, and the enrichment of
0.448‰/km. δ 13C and δ 15N in plateau pikas were not significantly correlated. There appeared to
be segregation between the metabolism of stable carbon and nitrogen isotopes of plateau pikas.
Variances in metabolic rate at lower water availability and temperatures are presumed to be the main
cause of enrichment of stable nitrogen isotopes along altitudinal gradients. Attention should be paid
to construct trophic positions and to trace food chain information based on an isotopic enrichment
model.
CITATIONS(10):
1.
Physiological, elemental, and stable isotope responses of the organs of mungbean to reduced atmospheric pressure Yan Zhao, Bin Guo, Kehong Liang, Donghua Wang, Shuming Yang In Vitro Cellular & Developmental Biology - Plant
Stable Nitrogen and Carbon Isotopes May Not Be Good Indicators of Altitudinal Distributions of Montane Passerines Yuan-Mou Chang, Kent A. Hatch, Hsin-Lin Wei, Hsiao-Wei Yuan, Cheng-Feng You, Dennis Eggett, Yi-Hsuan Tu, Ya-Ling Lin, Hau-Jie Shiu The Wilson Journal of Ornithology
Nitrogen isotope composition characteristics of modern plants and their variations along an altitudinal gradient in Dongling Mountain in Beijing XianZhao Liu, GuoAn Wang, JiaZhu Li, Qing Wang Science in China Series D: Earth Sciences
Measurements of nitrogen isotope composition of plants and surface soils along the altitudinal transect of the eastern slope of Mount Gongga in southwest China Xian-zhao Liu, Guoan Wang Rapid Communications in Mass Spectrometry
The effect of metabolic rate on stable carbon and nitrogen isotope compositions in deer mice, Peromyscus maniculatus J. J. Smith, J. S. Millar, F. J. Longstaffe, R. Boonstra Canadian Journal of Zoology
Leaf and Soil δ15N Patterns Along Elevational Gradients at Both Treelines and Shrublines in Three Different Climate Zones Xue Wang, Yong Jiang, Haiyan Ren, Fei-Hai Yu, Mai-He Li Forests
Isotopic niche of the American pika (Ochotona princeps) through space and time M.L. Westover, K.A. Lizewski, K.B. Klingler, F.A. Smith Canadian Journal of Zoology
Spatial patterns of leaf δ
13
C and δ
15
N of aquatic macrophytes in the arid zone of northwestern China Xusheng Gong, Zhiyan Xu, Qiutong Peng, Yuqing Tian, Yang Hu, Zhongqiang Li, Tao Hao Ecology and Evolution
Variation of stable carbon and nitrogen isotopes ratio in Ficus tikoua and their linkage to its specific pollinator Lu Tan, Yaobin Song, Ronghua Fu, Mei Liu, Yan Li, Marcial Escudero, Yan Chen, Ming Dong Flora
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