G2TT
来源类型Articles
规范类型论文
DOI10.1017/S0266467416000614
ISSN0266-4674
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
URLhttps://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
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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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