Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa62af |
Contrasting impacts of reindeer grazing in two tundra grasslands | |
Vowles, Tage1; Lovehav, Cajsa2; Molau, Ulf1; Bjork, Robert G.2 | |
2017-03-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | Plant communities in Arctic and alpine areas are changing due to higher temperatures and longer vegetation periods and it is uncertain how this will affect plant-herbivore dynamics. For instance, relatively fast-growing, deciduous shrub species that are the most responsive to warming may also be the most targeted by herbivores such as reindeer, giving less palatable evergreen shrubs the chance to expand. Using herbivore exclosures, we have studied how two grasslands with contrasting nutrient and moisture regimes, a dry, nutrient-poor alpine grass heath and a wet, productive low herb meadow, changed between 1995 and 2012, in grazed and ungrazed conditions. At the grass heath, evergreen low shrub abundance had more than doubled, regardless of grazer treatment, whereas at the low herb meadow, evergreen shrubs had increased only outside exclosures while deciduous tall shrubs and forbs were significantly more abundant inside exclosures. Deciduous tall shrubs were also significantly taller in exclosures. These contrasting findings suggest that the impact of herbivores is to a great deal determined by their influence on competitive interactions between plant species, and therefore depends on the underlying composition of the plant community. Consequently, as the balance in these competitive interactions is shifting due to climate warming, we conclude that the potential of herbivory to influence this balance is considerable yet highly site dependent. |
英文关键词 | tundra reindeer grazing grass heath herb meadow evergreen shrubs deciduous shrubs plant community |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397606500001 |
WOS关键词 | ARCTIC TUNDRA ; SHRUB EXPANSION ; VEGETATION ; RESPONSES ; HERBIVORES ; PRODUCTIVITY ; ECOSYSTEMS ; TRANSITION ; HYPOTHESIS ; EXCLUSION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/15096 |
专题 | 气候变化 |
作者单位 | 1.Univ Gothenburg, Dept Biol & Environm Sci, Box 461, SE-40530 Gothenburg, Sweden; 2.Univ Gothenburg, Dept Earth Sci, Box 460, SE-40530 Gothenburg, Sweden |
推荐引用方式 GB/T 7714 | Vowles, Tage,Lovehav, Cajsa,Molau, Ulf,et al. Contrasting impacts of reindeer grazing in two tundra grasslands[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(3). |
APA | Vowles, Tage,Lovehav, Cajsa,Molau, Ulf,&Bjork, Robert G..(2017).Contrasting impacts of reindeer grazing in two tundra grasslands.ENVIRONMENTAL RESEARCH LETTERS,12(3). |
MLA | Vowles, Tage,et al."Contrasting impacts of reindeer grazing in two tundra grasslands".ENVIRONMENTAL RESEARCH LETTERS 12.3(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论