Catastrophic disturbance, logging and the ecology of mahogany (Swietenia macrophylla King): Grounds for listing a major tropical timber species in CITES

被引:100
作者
Snook, LK
机构
来源
BOTANICAL JOURNAL OF THE LINNEAN SOCIETY | 1996年 / 122卷 / 01期
关键词
conservation; tropical forest; Mexico; regeneration stand dynamics; forestry; hurricane; fire; flooding; Amazon; Belize;
D O I
10.1111/j.1095-8339.1996.tb02061.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Recent debate on whether or not mahogany (Swietenia macrophylla King) is threatened by the international timber trade has focused on the breadth of its range and estimates of the remaining stock of mahogany trees. These data are inadequate to reveal the status of mahogany populations, both because they are incomplete in areal extent and because they do not reveal population parameters such as the existence or density of young trees smaller than commercial size. However, there is sufficient information on the regeneration ecology of mahogany to indicate that under natural conditions this species regenerates in essentially even-aged stands after catastrophic disturbances destroy many or most trees, and, in the case of fires and flooding, saplings and seedlings as well. Adult mahoganies tend to survive these events, and regenerate by shedding seed onto the resulting gaps or clearings. This ecological strategy makes mahogany vulnerable to logging, first because juvenile mahoganies are not found in the understorey, and secondly because logging operations shortcircuit mahogany regeneration processes by selectively removing almost all mahogany seed sources while leaving standing competing vegetation of other species. Listing of mahogany in CITES Appendix II could provide both a mechanism to fill in gaps in information and an incentive to change current practices in favour of silvicultural management to provide for regeneration of this valuable timber species in forest subjected to logging. (C) 1996 The Linnean Society of London
引用
收藏
页码:35 / 46
页数:12
相关论文
共 42 条
[1]  
ARGUELLES A, 1991, THESIS UACH TEXCOCO
[2]  
BASCOPE F, 1992, MAH WORKSH REV IMPL
[3]  
Beavers J, 1994, THESIS U MASSACHUSET
[4]  
DEBARROS PLC, 1992, UNPUB NATURAL ARTIFI
[5]  
Figueroa J., 1994, ASSESSMENT DISTRIBUT
[6]  
FINOL HERMAN, 1964, REV FOREST VENEZOLANA, V7, P17
[7]  
GERHARDT K, 1994, COMPREHENSIVE SUMMAR, V39
[8]   TROPICAL RAIN-FOREST - NONRENEWABLE RESOURCE [J].
GOMEZPOMPA, A ;
VAZQUEZY.C ;
GUEVARA, S .
SCIENCE, 1972, 177 (4051) :762-+
[9]  
GULLISON RE, 1996, BOTANICAL J LINNEAN, V122
[10]  
GULLISON RE, 1992, ECOLOGIA BOLIVIA, V19, P43