Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau
Grazing by domestic herbivores is generally recognized as a major ecological factor and an important evolutionary force in grasslands. Grazing has both extensive and profound effects on individual plants and communities. We investigated the response patterns of Polygonum viviparum species and the sp...
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ftchinacascnwipb:oai:210.75.249.4:363003/30336 2023-05-15T18:03:01+02:00 Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau Zhu, Zhi-Hong Lundholm, Jeremy Li, Yingnian Wang, Xiaoan 2008-06-01 http://ir.nwipb.ac.cn/handle/363003/1212 http://210.75.249.4/handle/363003/15048 http://210.75.249.4/handle/363003/20144 http://210.75.249.4/handle/363003/25240 http://210.75.249.4/handle/363003/30336 unknown JOURNAL OF INTEGRATIVE PLANT BIOLOGY Zhu ZhiHong,Lundholm Jeremy, Li Yingnian,Wang Xiaoan.Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2008,50(6): 659-672 http://ir.nwipb.ac.cn/handle/363003/1212 http://210.75.249.4/handle/363003/15048 http://210.75.249.4/handle/363003/20144 http://210.75.249.4/handle/363003/25240 http://210.75.249.4/handle/363003/30336 期刊论文 2008 ftchinacascnwipb 2023-03-26T20:31:58Z Grazing by domestic herbivores is generally recognized as a major ecological factor and an important evolutionary force in grasslands. Grazing has both extensive and profound effects on individual plants and communities. We investigated the response patterns of Polygonum viviparum species and the species diversity of an alpine shrub meadow in response to long-term livestock grazing by a field manipulative experiment controlling livestock numbers on the Qinghai-Tibet Plateau in China. Here, we hypothesize that within a range of grazing pressure, grazing can alter relative allocation to different plant parts without changing total biomass for some plant species if there is life history trade-offs between plant traits. The same type of communities exposed to different grazing pressures may only alter relative species' abundances or species composition and not vary species diversity because plant species differ in resistant capability to herbivory. The results show that plant height and biomass of different organs differed among grazing treatments but total biomass remained constant. Biomass allocation and absolute investments to both reproduction and growth decreased and to belowground storage increased with increased grazing pressure, indicating the increasing in storage function was attained at a cost of reducing reproduction of bulbils and represented an optimal allocation and an adaptive response of the species to long-term aboveground damage. Moreover, our results showed multiform response types for either species groups or single species along the gradient of grazing intensity. Heavy grazing caused a 13.2% increase in species richness. There was difference in species composition of about 18%-20% among grazing treatment. Shannon-Wiener (H') diversity index and species evenness (E) index did not differ among grazing treatments. These results support our hypothesis. Grazing by domestic herbivores is generally recognized as a major ecological factor and an important evolutionary force in grasslands. Grazing has ... Report Polygonum viviparum Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) |
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Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) |
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ftchinacascnwipb |
language |
unknown |
description |
Grazing by domestic herbivores is generally recognized as a major ecological factor and an important evolutionary force in grasslands. Grazing has both extensive and profound effects on individual plants and communities. We investigated the response patterns of Polygonum viviparum species and the species diversity of an alpine shrub meadow in response to long-term livestock grazing by a field manipulative experiment controlling livestock numbers on the Qinghai-Tibet Plateau in China. Here, we hypothesize that within a range of grazing pressure, grazing can alter relative allocation to different plant parts without changing total biomass for some plant species if there is life history trade-offs between plant traits. The same type of communities exposed to different grazing pressures may only alter relative species' abundances or species composition and not vary species diversity because plant species differ in resistant capability to herbivory. The results show that plant height and biomass of different organs differed among grazing treatments but total biomass remained constant. Biomass allocation and absolute investments to both reproduction and growth decreased and to belowground storage increased with increased grazing pressure, indicating the increasing in storage function was attained at a cost of reducing reproduction of bulbils and represented an optimal allocation and an adaptive response of the species to long-term aboveground damage. Moreover, our results showed multiform response types for either species groups or single species along the gradient of grazing intensity. Heavy grazing caused a 13.2% increase in species richness. There was difference in species composition of about 18%-20% among grazing treatment. Shannon-Wiener (H') diversity index and species evenness (E) index did not differ among grazing treatments. These results support our hypothesis. Grazing by domestic herbivores is generally recognized as a major ecological factor and an important evolutionary force in grasslands. Grazing has ... |
format |
Report |
author |
Zhu, Zhi-Hong Lundholm, Jeremy Li, Yingnian Wang, Xiaoan |
spellingShingle |
Zhu, Zhi-Hong Lundholm, Jeremy Li, Yingnian Wang, Xiaoan Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau |
author_facet |
Zhu, Zhi-Hong Lundholm, Jeremy Li, Yingnian Wang, Xiaoan |
author_sort |
Zhu, Zhi-Hong |
title |
Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau |
title_short |
Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau |
title_full |
Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau |
title_fullStr |
Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau |
title_full_unstemmed |
Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau |
title_sort |
response of polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in qinghai-tibet plateau |
publishDate |
2008 |
url |
http://ir.nwipb.ac.cn/handle/363003/1212 http://210.75.249.4/handle/363003/15048 http://210.75.249.4/handle/363003/20144 http://210.75.249.4/handle/363003/25240 http://210.75.249.4/handle/363003/30336 |
genre |
Polygonum viviparum |
genre_facet |
Polygonum viviparum |
op_relation |
JOURNAL OF INTEGRATIVE PLANT BIOLOGY Zhu ZhiHong,Lundholm Jeremy, Li Yingnian,Wang Xiaoan.Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2008,50(6): 659-672 http://ir.nwipb.ac.cn/handle/363003/1212 http://210.75.249.4/handle/363003/15048 http://210.75.249.4/handle/363003/20144 http://210.75.249.4/handle/363003/25240 http://210.75.249.4/handle/363003/30336 |
_version_ |
1766173719426760704 |