Modeling trophic positions of the alpine meadow ecosystem combining stable carbon and nitrogen isotope ratios
文献类型：期刊论文
| 作者 | Yi, XF; Yang, YQ; Zhang, X |
| 刊名 | ecological modelling
 |
| 出版日期 | 2006-03-15 |
| 卷号 | 193期号:3-4页码:801-808 |
| 关键词 | stable carbon and nitrogen isotopes alpha and vector model trophic relationships Alpine meadow ecosystem Tibetan Plateau |
| 合作状况 | 其它 |
| 中文摘要 | stable carbon and nitrogen isotope ratios of single tissues or whole bodies were analyzed to establish trophic positions of main consumers living at the alpine meadow ecosystem in the tibetan plateau. the results demonstrated that delta c-13 and delta n-15 values of vertebrates showed great variations and ranged from -26.83 to -22.51 parts per thousand and from 2.33 to 8.44 parts per thousand, respectively. plateau pika, root vole, plateau hare, infants of rodents and hatchlings of passerine bird species had the lowest delta c-13 and delta n-15 values. delta c-13 and delta n-15 values of omnivorous and insectivorous birds and amphibians showed intermediate. carnivorous species, steppe polecat and upland buzzard, and omnivorous robin accentor and white wagtail possessed extremely higher vc and delta n-15 values. omnivorous birds captured in earlier year had significantly less negative delta c-13 and greater delta n-15 values than those captured later. based on steady angular enrichment between trophic levels, an "alpha and vector model" combing delta c-13 and delta n-15 values was introduced to reveal trophic positions, the results indicated that tibetan sheep, tibetan yak, plateau pika, root vole, plateau hare, infants of small rodents showed the lowest trophic positions (tp 1.81-2.38). while omnivorous and insectivorous birds, their hatchlings and amphibians showed intermediate trophic positions (tp 2.06-2.89), carnivorous species steppe polecat and upland buzzard, migrant birds possessed extremely higher trophic positions (tp 2.89-3.05). the isotopic investigation of organisms and the introduced "alpha and vector model" successfully demonstrated the same trophic positions and diet prediction of consumers as nitrogen enrichment model at the alpine meadow ecosystem. besides of this information, the "alpha and vector model" can also be incorporated into multiple isotope signatures to infer trophic relationships. this angular enrichment model has the potential to address basic ecological questions, such as trophic structure, trophic dynamics, and energy flow in other terrestrial ecosystems of properly handled. (c) 2005 elsevier b.v. all rights reserved. |
| 英文摘要 | stable carbon and nitrogen isotope ratios of single tissues or whole bodies were analyzed to establish trophic positions of main consumers living at the alpine meadow ecosystem in the tibetan plateau. the results demonstrated that delta c-13 and delta n-15 values of vertebrates showed great variations and ranged from -26.83 to -22.51 parts per thousand and from 2.33 to 8.44 parts per thousand, respectively. plateau pika, root vole, plateau hare, infants of rodents and hatchlings of passerine bird species had the lowest delta c-13 and delta n-15 values. delta c-13 and delta n-15 values of omnivorous and insectivorous birds and amphibians showed intermediate. carnivorous species, steppe polecat and upland buzzard, and omnivorous robin accentor and white wagtail possessed extremely higher vc and delta n-15 values. omnivorous birds captured in earlier year had significantly less negative delta c-13 and greater delta n-15 values than those captured later. based on steady angular enrichment between trophic levels, an "alpha and vector model" combing delta c-13 and delta n-15 values was introduced to reveal trophic positions, the results indicated that tibetan sheep, tibetan yak, plateau pika, root vole, plateau hare, infants of small rodents showed the lowest trophic positions (tp 1.81-2.38). while omnivorous and insectivorous birds, their hatchlings and amphibians showed intermediate trophic positions (tp 2.06-2.89), carnivorous species steppe polecat and upland buzzard, migrant birds possessed extremely higher trophic positions (tp 2.89-3.05). the isotopic investigation of organisms and the introduced "alpha and vector model" successfully demonstrated the same trophic positions and diet prediction of consumers as nitrogen enrichment model at the alpine meadow ecosystem. besides of this information, the "alpha and vector model" can also be incorporated into multiple isotope signatures to infer trophic relationships. this angular enrichment model has the potential to address basic ecological questions, such as trophic structure, trophic dynamics, and energy flow in other terrestrial ecosystems of properly handled. (c) 2005 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 生物科学 |
| 类目[WOS] | ecology |
| 研究领域[WOS] | environmental sciences & ecology |
| 关键词[WOS] | seasonal-changes ; food web ; delta-c-13 ; animals ; marine ; diets ; salmon ; c-13 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000236016700041 |
| 公开日期 | 2009-12-08 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/1341]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Henan Univ Sci & Technol, Coll Agr, Luoyang 471003, Peoples R China 2.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China 3.Chinese Acad Sci, Inst Zool, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi, XF,Yang, YQ,Zhang, X. Modeling trophic positions of the alpine meadow ecosystem combining stable carbon and nitrogen isotope ratios[J]. ecological modelling,2006,193(3-4):801-808. |
| APA | Yi, XF,Yang, YQ,&Zhang, X.(2006).Modeling trophic positions of the alpine meadow ecosystem combining stable carbon and nitrogen isotope ratios.ecological modelling,193(3-4),801-808. |
| MLA | Yi, XF,et al."Modeling trophic positions of the alpine meadow ecosystem combining stable carbon and nitrogen isotope ratios".ecological modelling 193.3-4(2006):801-808. |
入库方式： OAI收割
来源：西北高原生物研究所
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