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来源类型 | Articles |
规范类型 | 论文 |
DOI | 10.1017/S0266467416000614 |
ISSN | 0266-4674 |
Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon | |
Luttrell, C.; Sills, E.O.; Aryani, R.; Ekaputri, A.D.; Evnike, M.F. | |
发表日期 | 2017 |
出处 | Journal of Tropical Ecology 33(2): 114-127 |
出版年 | 2017 |
语种 | 英语 |
摘要 | To date, the spatial distribution pattern and density of Brazil nut trees in logged forest stands is unclear across the Amazon basin. We asked the following questions: (1) What are the densities and spatial distributions of Brazil nut juveniles (10 = dbh < 40 cm) and adults (= 40 cm dbh) in three selectively logged Brazil nut concessions (1413 ha sampled) in Madre de Dios, Peru; (2) What is the spatial relationship between adults and juveniles (10 = dbh < 30 cm); and (3) What is the spatial relationship between juveniles (10 = dbh <30 cm) and cut stumps (= 10 y)? Spatial analyses were conducted using statistics derived from Ripley's K function. Juveniles were aggregated in all three concessions. Results for adult populations rejected the null hypothesis of a random distribution among trees = 40 cm dbh. We did not find an attraction between juveniles and cut-stump locations, nor between adults and juveniles. The strong peaks of aggregation for juveniles and adult Brazil nuts in this study occurred at long distances (300-900 m), suggesting multiple tree canopy gaps as drivers of spatial distribution patterns, either via natural or anthropogenic sources. Our data contribute to a more thorough understanding of Brazil nut population structure in disturbed forests in south-western Amazonia. |
主题 | forests ; trees ; spatial distribution ; multiple use forestry ; seeds ; distribution |
区域 | Peru,Amazon |
URL | https://www.cifor.org/library/6360/ |
来源智库 | Center for International Forestry Research (Indonesia) |
引用统计 | |
资源类型 | 智库出版物 |
条目标识符 | http://119.78.100.153/handle/2XGU8XDN/93570 |
推荐引用方式 GB/T 7714 | Luttrell, C.,Sills, E.O.,Aryani, R.,et al. Spatial distribution of Bertholletia excelsa in selectively logged forests of the Peruvian Amazon. 2017. |
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