DOI: 10.1016/j.foreco.2017.05.005
Scopus记录号: 2-s2.0-85019084620
论文题名: Abundance, population structure and harvesting selection of two palm species (Hyphaene coriacea and Phoenix reclinata) in Zitundo area, southern Mozambique
作者: Martins A.R.O. ; Shackleton C.M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 398 起始页码: 64
结束页码: 74
语种: 英语
英文关键词: Cluster density
; Preference ratio
; Size distribution
; Stability indices
; Stem density
; Tapping
Scopus关键词: Automatic indexing
; Regression analysis
; Size distribution
; Stability
; Tapping (threads)
; Cluster densities
; Long term monitoring
; Long-term sustainability
; Population structures
; Preference ratio
; Southern Mozambique
; Stability indices
; Stem density
; Harvesting
; Hyphaene coriacea
; Phoenix reclinata
英文摘要: In southern Mozambique, the sap and leaves of the palms Hyphaene coriacea and Phoenix reclinata are harvested by local people as sources of traditional beverages, weaving, roofing, fencing and furniture material. The harvesting of these palm products may affect palm population structure, dynamics and viability. This work evaluates the abundance, population structure and harvesting selection of these two heavily harvested palm species. Hyphaene coriacea was more abundant, with a mean density of 601.5 ± 455.9 stems ha−1 against the 251.9 ± 527.3 stems ha−1 of Phoenix reclinata. Both species exhibited steeper negative slopes in the regression analyses of the size class distribution, indicating the presence of more individuals in smaller size classes. Although there was a dominance of shorter over taller size classes, limited recruitment was observed through low densities of seedling and juvenile size classes compared to the size class 1–50 cm. The Simpson index of dominance, the permutation index, and the fluctuating quotients between the consecutive size classes showed a degree of instability in both populations. Hyphaene coriacea appears to be more resilient to tapping than Phoenix reclinata, evident in the higher rate of stem survival after tapping. Hyphaene coriacea is favored for tapping compared to Phoenix reclinata. Tappers exhibited positive selection for five out of the six Hyphaene coriacea size classes, against only one Phoenix reclinata size class. The most preferred size class to tap for both species was between 101 cm and 150 cm tall. The instability detected by the indices of population stability, the coincidence between the size classes with high numbers of dead stems and the most preferred and the low level of the sexual reproduction encountered in both population emphasizes the need for long-term monitoring as well as management measures that integrate the resource users, to ensure the long-term sustainability of these populations. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64290
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Environmental Science, Rhodes University, Grahamstown, South Africa; Department of Biological Science, Universidade Eduardo Mondlane, PO Box 257, Maputo, Mozambique
Recommended Citation:
Martins A.R.O.,Shackleton C.M.. Abundance, population structure and harvesting selection of two palm species (Hyphaene coriacea and Phoenix reclinata) in Zitundo area, southern Mozambique[J]. Forest Ecology and Management,2017-01-01,398