Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.05.022 |
Competition and dominance between angiosperms and Araucaria angustifolia (Bert.) O. Kuntze in the Atlantic Forest in southern Brazil | |
Orellana, Enrique1; Vanclay, Jerome K.2 | |
2018-10-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 425页码:119-125 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; Australia |
英文摘要 | The dominance relationship between angiosperms and gymnosperms in natural forests has long been widely discussed, with some researchers believing that angiosperms tend to displace conifers due to competitive processes between the two species groups. The Lozenge or "temporal stand replacement" model states that a cohort of conifers is first established after a disturbance, while angiosperms establish themselves under the conifer canopy in a secondary stage that thereafter hinders conifer regeneration. This causes a drastic decline in conifer recruitment, restricting them to filling in gaps opportunistically. The objective of this study was to evaluate the competition for growth and survival between a conifer (Araucaria angustifolia) and two groups of angiosperms (shade-tolerant and light-demanding) in a species-rich forest using a distance-dependent competition index. We also investigated dominance among the three species groups by projecting the aboveground biomass of the groups for 50 years using an individual-tree distance-dependent growth model. We used data collected from 25 1-ha permanent plots located in the National Forest (FLONA) of Irati in southern Brazil, where all trees with more than a 10-cm diameter at breast height were identified for species and tagged, mapped, and measured. These plots have been measured every 3 years since their establishment in 2002. For diameter growth, the results indicated the araucarias were subject to severe intraspecific competition, while the light-demanding species suffered only moderate competition from the araucarias. The shade-tolerant species experienced little competition from any species group. No empirical evidence was found to support the hypothesis that competition estimates improve mortality predictions in a simple model based on stem diameter. Regarding the long-term dominance of the Araucaria, light-demanding, and shade-tolerant groups, the growth model indicated that araucarias will tend to dominate over the two angiosperm groups in aboveground biomass within 50 years, suggesting that this forest type follows the Lozenge model. |
英文关键词 | Lozenge model Forest dynamics Conifer-angiosperm forest Hegyi competition index |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438004500013 |
WOS关键词 | CANOPY TREE COMPETITION ; ENVIRONMENTAL GRADIENTS ; SPATIAL-DISTRIBUTION ; HEMISPHERE CONIFERS ; POPULATION-DYNAMICS ; GROWTH-MODEL ; RAIN-FOREST ; NEW-ZEALAND ; INDEXES ; SIZE |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
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/24259 |
专题 | 气候变化 |
作者单位 | 1.Midwest State Univ UNICTR, Dept Forest Engn, PR 153,Km 7, BR-84500000 Irati, Parana, Brazil; 2.Southern Cross Univ SCU, Forest Res Ctr, POB 157, Lismore, NSW, Australia |
推荐引用方式 GB/T 7714 | Orellana, Enrique,Vanclay, Jerome K.. Competition and dominance between angiosperms and Araucaria angustifolia (Bert.) O. Kuntze in the Atlantic Forest in southern Brazil[J]. FOREST ECOLOGY AND MANAGEMENT,2018,425:119-125. |
APA | Orellana, Enrique,&Vanclay, Jerome K..(2018).Competition and dominance between angiosperms and Araucaria angustifolia (Bert.) O. Kuntze in the Atlantic Forest in southern Brazil.FOREST ECOLOGY AND MANAGEMENT,425,119-125. |
MLA | Orellana, Enrique,et al."Competition and dominance between angiosperms and Araucaria angustifolia (Bert.) O. Kuntze in the Atlantic Forest in southern Brazil".FOREST ECOLOGY AND MANAGEMENT 425(2018):119-125. |
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