期刊
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
卷 78, 期 4, 页码 439-455出版社
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1046/j.0024-4066.2002.00205.x
关键词
canopy; niche specialization; rare species; species diversity; strangler fig; Urostigma
The diversity and niche specificity of hemi-epiphytic figs in a lowland dipterocarp forest in Sarawak were investigated in 1998. Twenty-seven fig species (264 individuals, c. 120 ha) colonized a diversity of host taxa (35 families), but densities were very low and only 1.77% of trees >30 cm d.b.h. were occupied. There were no significant associations with host taxa or host-bark roughness but among 11 common species (greater than or equal to9 individuals) the distributions of all other parameters (host-d.b.h., height and position of colonization, crown illumination, soil-texture and slope-angle) were significantly different, and we identified five fig guilds. The guilds corresponded to canopy strata, and appeared to reflect the establishment microsite requirements of different species. A fundamental trade-off within the hemiepiphytic habit was revealed: Species colonizing larger hosts were rarer, because of lower host densities and more specific microsite requirements, but had better light environments and attained a larger maximum size. The single strangler species appeared to escape many of these constraints, and an important source of mortality caused by host-toppling, indicating the advantages of this strategy. Thus, the hemi-epiphytic figs in this community have come to fill a remarkable diversity of niches, despite low levels of competition, through the exigencies of a complex environment. (C) 2003 The Linnean Society of London.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据