Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.05.052 |
Fire- and distance-dependent recruitment of the Brazil nut in the Peruvian Amazon | |
Porcher, Vincent1; Thomas, Evert1; Corvera Gomringer, Ronald2; Bardales Lozano, Ricardo2 | |
2018-11-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 427页码:52-59 |
文章类型 | Article |
语种 | 英语 |
国家 | Peru |
英文摘要 | The low natural regeneration of the Brazil nut (Bertholletia excelsa) in the Madre de Dios region of Peru is a major concern for the conservation and sustainable use of this species which sustains one of the cornerstone non-timber forest product economies in Amazonia. The Brazil nut is a gap-dependent, long-lived pioneer species that has been shown to regenerate more effectively in fallows than in mature forests. Aside from light and nutrient availability, recruitment success of the species might also be influenced by conspecific negative distance-dependent (CNDD) processes as shown for a myriad of other tropical tree species, but to date has not been studied in the Brazil nut. We measured Brazil nut recruitment in forty 150 x 10 m(2) transects (totaling 6 ha), proportionally laid out in mature forest and fallow land. We found a higher likelihood of regeneration in fallows than in mature forest, which was mainly due to more successful transitioning from seedlings to saplings in fallows. Recruitment rates in fallows increased with the number of fire events occurring over the past 12 years, largely owing to the accumulation of resprouting individuals, but this positive correlation was only observed up to three fire events. We observed CNDD recruitment of the Brazil nut in fallows but not in mature forest, suggesting that pests and diseases might also condition Brazil nut recruitment. Our findings suggest that a better management of fallow land and more controlled use of fire in neighboring land uses could be a cost-effective manner to create Brazil nut rich forests through natural regeneration. On the other hand, the absence of high density Brazil nut stands in mature forests in Madre de Dios might mean that the impact of ancient humans there has been more limited than in other Amazonian regions. |
英文关键词 | Bertholletia excelsa Conspecific negative distance-dependence Sprouting Fire-dependent recruitment Peru |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440775600007 |
WOS关键词 | TREE BERTHOLLETIA-EXCELSA ; NEGATIVE DENSITY-DEPENDENCE ; SEED DISPERSAL ; POPULATION-STRUCTURE ; EXTRACTIVE RESERVES ; SPATIAL-PATTERNS ; BOLIVIAN AMAZON ; SURVIVAL ; FOREST ; REGENERATION |
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/23650 |
专题 | 气候变化 |
作者单位 | 1.Biovers Int, Avenida La Molina 1895,POB 1558, Lima, Peru; 2.Inst Invest Amazonia Peruana, Puerto Maldonado, Madre De Dios, Peru |
推荐引用方式 GB/T 7714 | Porcher, Vincent,Thomas, Evert,Corvera Gomringer, Ronald,et al. Fire- and distance-dependent recruitment of the Brazil nut in the Peruvian Amazon[J]. FOREST ECOLOGY AND MANAGEMENT,2018,427:52-59. |
APA | Porcher, Vincent,Thomas, Evert,Corvera Gomringer, Ronald,&Bardales Lozano, Ricardo.(2018).Fire- and distance-dependent recruitment of the Brazil nut in the Peruvian Amazon.FOREST ECOLOGY AND MANAGEMENT,427,52-59. |
MLA | Porcher, Vincent,et al."Fire- and distance-dependent recruitment of the Brazil nut in the Peruvian Amazon".FOREST ECOLOGY AND MANAGEMENT 427(2018):52-59. |
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