DOI: 10.1016/j.foreco.2014.01.028
Scopus记录号: 2-s2.0-84893945843
论文题名: The fate of populations of Euterpe oleracea harvested for palm heart in Colombia
作者: Vallejo M.I. ; Galeano G. ; Bernal R. ; Zuidema P.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 318 起始页码: 274
结束页码: 284
语种: 英语
英文关键词: Arecaceae
; NTFP
; Population dynamics
; Sustainable management
; Transient dynamics
; Use
英文摘要: Palm heart is an important non-timber forest product obtained from various palm species in tropical forests. We studied the effect of four decades of palm heart extraction from the clonal palm Euterpe oleracea at the southern Pacific coast of Colombia. We monitored populations that had been subject to a range of harvest intensities and used measured vital rates (survival, growth, sexual and clonal reproduction) to construct population matrix models. We then used these models to simulate several harvest scenarios and to project the population dynamics for the next 50. years. Our projections suggest that the currently implemented intensive harvest regimes - which involve up to four harvests per year - result in dramatic demographic changes, primarily affecting seedlings and adults. In addition, current harvest regimes affect the future supply of palm heart, which is projected to drop sharply during the first years following harvest and fails to recover unless a number of stems are spared. Our simulations indicate that the most sustainable scenarios involve annual harvest between 50% and 75% of all harvestable stems, without any removal of small shoots from the clumps. Implementation of this regime must be accompanied by other management practices, including planning harvestable areas, marking the stems to be cut during subsequent harvests, assigning harvesters to specific areas, and leaving harvest residues as mulch around clumps. The degradation of populations of E oleracea directly affects livelihoods of local people, by reducing cash income from palm heart sales and by reducing availability of palm fruits, a locally important food resource. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66047
Appears in Collections: 影响、适应和脆弱性
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作者单位: Grupo de Investigación en Palmas Silvestres Neotropicales, Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Colombia; Forest Ecology and Forest Management Group, Wageningen University, Netherlands
Recommended Citation:
Vallejo M.I.,Galeano G.,Bernal R.,et al. The fate of populations of Euterpe oleracea harvested for palm heart in Colombia[J]. Forest Ecology and Management,2014-01-01,318