Plant diversity and community structure of Brazilian Paramos
文献类型：期刊论文
| 作者 | Campos, PV; Villa, PM; Nunes, JA; Schaefer, CEGR; Porembski, S; Neri, AV |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 15期号:6页码:1186-1198 |
| 关键词 | Rock outcrops High altitude grasslands Species abundance distribution Species richness |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-017-4674-7 |
| 文献子类 | Article |
| 英文摘要 | In Eastern South America, high altitude grasslands represent a mountain system that has a high number of endemic species. However, studies on the ecology of plant communities in these environments remain scarce. We aimed to evaluate the patterns of biodiversity and structure of plant communities from rocky outcrops in high altitude grasslands of three areas at the Capara National Park, southeastern Brazil, by sampling 300 randomly distributed plots. Then, we compared the floristic composition, relative abundance, and biological and vegetation spectra among areas. We classified species as endemic and non-endemic and verified the occurrence of endangered species. Species richness was evaluated by rarefaction analysis on the sampling units. The importance value and species abundance distribution (SAD) models were assessed. We also performed an indicator species analysis. We sampled 58 species belonging to 49 genera and 32 families. The number of species decreased with increasing altitude, with significant differences being observed among areas regarding richness, abundance, and cover. Of the total number of species, 10 are endemic to the Capara National Park and 17 are listed on the Brazilian Red List of endangered species. The dominant families on all peaks were Asteraceae and Poaceae. The SAD models showed lognormal and geometric distributions, corroborating the fact that 10 species that were common to all three areas were also the most dominant ones in the communities and showed the highest importance values, which ranged between 35% and 60%. Indicator species analysis revealed that 28 species (48.27%) were indicators. Of these, 42.85% had maximum specificity, meaning that they occurred only in one area. Thus, the number of species per life form ratio was similar among areas, yet vegetation spectra differed, especially for hemicryptophytes. The altimetric difference among the areas showed to be a very important driver in the community assembly, influencing the evaluated variables, however, other drivers as soil depth, slope and water could also influence the community structure on a smaller and local spatial scale. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000435362700003 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/35504]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.6 |
| 推荐引用方式 GB/T 7714 | Campos, PV,Villa, PM,Nunes, JA,et al. Plant diversity and community structure of Brazilian Paramos[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(6):1186-1198. |
| APA | Campos, PV,Villa, PM,Nunes, JA,Schaefer, CEGR,Porembski, S,&Neri, AV.(2018).Plant diversity and community structure of Brazilian Paramos.JOURNAL OF MOUNTAIN SCIENCE,15(6),1186-1198. |
| MLA | Campos, PV,et al."Plant diversity and community structure of Brazilian Paramos".JOURNAL OF MOUNTAIN SCIENCE 15.6(2018):1186-1198. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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