Comparative Biology of Tropical Trees: a Perspective from Pasoh
Comparative Biology of Tropical Trees: a Perspective from Pasoh
复制标题
热带树木的比较生物学：帕索的视角
DOI：
10.1007/978-4-431-67008-7_13
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发表时间：
2003
影响因子：
11.1
通讯作者：
S. Thomas
中科院分区：
文献类型：
--
作者：
S. Thomas
从20世纪60年代末开始，帕索森林保护区（Pasoh FR）的树种一直是众多比较研究的焦点。迄今为止的研究已经检查了空间分布和土壤偏好，生殖物候，垂直分层，以及与传粉者和种子捕食者的相互作用。最近的研究也开始解决生态变化的生理和形态基础。Pasoh FR主要是由植物遗传学上密切相关的树木群所控制。在同一个属（Eugenia）中有多达47个物种在该地点同域分布。对这些物种群中的几个的详细研究表明，所描述的形态种对应于生殖隔离的分类群。密切相关的物种通常在生殖时间，微生境偏好和成熟时的垂直层方面有所不同。比较研究还强调了几个基础的生态“生态位分化”在Pasoh，无论是内部和之间的系统发育组。在网站上的树种表现出显着的差异，在垂直分层方面，相对于当地的水流模式，土壤母质，生长和光照的要求。最近的理论研究表明，生态位分化可能不是必要的，以维持高物种丰富度的热带森林群落。那么，人们应该如何解释在Pasoh FR发现的树种之间的巨大生态差异呢？在诸如人口统计率参数和繁殖时的大小等特征中存在着巨大的种间差异，这表明“零”模型的一个核心假设物种是等同的是完全不正确的。充分考虑种间生态差异以及扩散限制和热带森林群落零模型的其他核心要素的模型是必要的，以进一步我们的热带树木多样性的理论理解，并更好地预测热带森林对人类和自然干扰的响应。比较研究对于确定参数和检验这种模式是必不可少的，而且在提供对该区域森林管理和养护至关重要的基本“森林学”信息方面也发挥着重要作用。
From the late 1960s, tree species at Pasoh Forest Reserve (Pasoh FR) have been the focus of numerous comparative studies. Research to date has examined spatial distributions and edaphic preferences, reproductive phenology, vertical stratification, and interactions with pollinators and seed predators. Recent studies have also begun to address physiological and morphological bases for ecological variation. Pasoh FR is dominated by groups of trees that are phylogenetically closely related. As many as 47 species within a single genus (Eugenia) occur in sympatry at the site. Detailed studies of several of these speciose groups indicate that described morphospecies correspond to reproductivelyisolated taxa. Closely related species commonly differ in terms of reproductive timing, microhabitat preference, and vertical stratum at maturity. Comparative studies have also emphasized several bases for ecological “niche differentiation” at Pasoh, both within and among phylogenetic groups. Tree species at the site show pronounced differences in terms of vertical stratification, and relative to local patterns of water flow, soil parent material, and light requirements for growth. Recent theoretical studies suggest that niche differentiation may not be necessary to maintain high species richness in tropical forest communities. How, then, should one interpret the large ecological differences found among tree species at Pasoh FR? The existence of large interspecific differences in such characteristics as demographic rate parameters and size at reproduction indicates that one central assumption of “null” models-that species are equivalent-is simply incorrect. Models that fully incorporate interspecific ecological differences as well as dispersal limitation and other central elements of null models of tropical forest communities are needed to further our theoretical understanding of tropical tree diversity, and to better predict tropical forest responses to human and natural disturbance. Comparative studies are essential to parameterize and test such models, and also serve an important role in providing basic “silvics” information essential to forest management and conservation in the region.
影响因子：
1.9
作者：
GENTRY, AH
通讯作者：
GENTRY, AH