Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2019.117633 |
Blowdown disturbance effect on the density, richness and species composition of the seed bank in Central Amazonia | |
Bordon, Natali Gomes1; Nogueira, Anselmo2; Leal Filho, Niwton3; Higuchi, Niro4 | |
2019-12-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 453 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil |
英文摘要 | Windstorms, known as blowdowns, create large canopy gaps in the tropical rainforest. Despite the occurrence of blowdowns in Central Amazonia, no studies have yet investigated the seed bank in areas altered by blowdown in the Amazon rainforest. The seed bank plays an important role in the regeneration of larger natural gaps, and changes in, or partial loss of, seed bank can modify the successional dynamics locally. In the present study, we compared the density, richness and floristic composition of a seed bank in a post-blowdown secondary forest with approximately six years old and a continuous forest. The seed bank was characterized by collecting 160 soil samples systematically distributed in each forest type at two different times. Samples were collected at a minimum distance of 30 m from each other, sampling the superficial soil 5 cm in depth and 20 cm in diameter. At each sampling point, the slope and canopy openness was also measured. The density and floristic composition of the seed bank was estimated using counts of seedlings that had emerged in a nursery of the collected soil samples. The post-blowdown secondary forest exhibited seed banks 30% denser and 20% richer, on average, than continuous forest. The floristic composition also differed between forest types, with a predominance of Melastomataceae, Urticaceae, and Araceae in the secondary forest, followed by Cyperaceae and Moraceae; however, these did not differ between forest types. In contrast, for other families, greater richness and density were observed in the continuous forest. Higher density and richness of trees, shrubs, epiphytes, and hemiepiphytes were observed in the secondary forest, except for the richness of epiphytes. In general, terrain slope was unrelated to density, richness and floristic composition of the seed bank. Under a disturbance of great magnitude, such as a blowdown, the density and richness of the seed bank were not reduced; on the contrary, its potential for local regeneration was maintained. Despite the limited contribution of the seed bank to the regeneration of climax species, the seed bank was shown to be diverse in species, including different life forms, and may contribute to the regeneration of forest strata, even after severe disturbances. |
英文关键词 | Forest disturbance Melastomataceae Large gaps Araceae Tree fall |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496607200035 |
WOS关键词 | TROPICAL RAIN-FOREST ; PIONEER TREES ; CATASTROPHIC WINDTHROW ; PHYSIOLOGICAL DORMANCY ; DISTRIBUTION PATTERNS ; STANDING VEGETATION ; TREEFALL PITS ; SOIL ; GAP ; GERMINATION |
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/224761 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Inst Nacl de Pesquisas da Amazonia, Programa Posgrad Bot, Av Andre Araajo 2936, BR-69060001 Manaus, Amazonas, Brazil; 2.Univ Fed ABC, Ctr Ciancias Nat & Humans, Rua Arcturus, BR-09606070 Sao Bernardo Do Campo, SP, Brazil; 3.Inst Nacl de Pesquisas da Amazonia, Dept Ecol, Av Andre Andre Araujo 2936,CP 478, BR-69060001 Manaus, Amazonas, Brazil; 4.Inst Nacl de Pesquisas da Amazonia, Dept Silvicultura Trop, Manejo Florestal, Av Andre Araujo 2936,CP 478, BR-69067375 Manaus, Amazonas, Brazil |
推荐引用方式 GB/T 7714 | Bordon, Natali Gomes,Nogueira, Anselmo,Leal Filho, Niwton,et al. Blowdown disturbance effect on the density, richness and species composition of the seed bank in Central Amazonia[J]. FOREST ECOLOGY AND MANAGEMENT,2019,453. |
APA | Bordon, Natali Gomes,Nogueira, Anselmo,Leal Filho, Niwton,&Higuchi, Niro.(2019).Blowdown disturbance effect on the density, richness and species composition of the seed bank in Central Amazonia.FOREST ECOLOGY AND MANAGEMENT,453. |
MLA | Bordon, Natali Gomes,et al."Blowdown disturbance effect on the density, richness and species composition of the seed bank in Central Amazonia".FOREST ECOLOGY AND MANAGEMENT 453(2019). |
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