The biosystematics and evolution of the Polyalthia hypoleuca species complex (Annonaceae) of Malesia. II. Comparative distributional ecology
The biosystematics and evolution of the Polyalthia hypoleuca species complex (Annonaceae) of Malesia. II. Comparative distributional ecology
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马来西亚 Polyalthia hyperleuca 物种复合体（番荔枝科）的生物系统学和进化。
DOI：
10.1017/s0266467400004776
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发表时间：
1990
影响因子：
1.4
通讯作者：
S. Rogstad
中科院分区：
文献类型：
--
作者：
S. Rogstad
摘要 热带低地雨林高度生物多样性的一个组成部分是一系列密切相关的同域物种的存在。例如，单系Polyalthiahypoleuca复合体的六种不同树种在整个马来西亚雨林中以各种组合规律地同域生长。理论和经验证据表明，此类系列的成员要么 (1) 在至少一个主要利基组成部分方面具有良好的差异化； （2）可能缺乏差异化的利基市场。在这项研究中，该复合体的某些同域成员在影响其分布的自生态特征上表现出明显的差异，包括：（1）P. glauca、P.hypoteuca和P.sumatrana在生长特征、成熟高度、幼苗发芽要求方面存在差异，并且在不同水合程度的土壤中发现； (2) P. discolor 与多脉 P. discolor 相比，在不同的基质类型上生长高度不同； (3) P. glauca 和 P.hypoteuca 幼苗的蒸腾特性和对洪水和干旱的响应不同。
ABSTRACT One component of the high organismal diversity of tropical lowland rain forests is the existence of series of closely related, sympatric species. For example, the six distinct tree species of the monophyletic Polyalthia hypoleuca complex regularly grow sympatrically in various combinations throughout the rain forests of Malesia. Theoretical and empirical evidence has been presented indicating that the members of such series either (1) are well differentiated with respect to at least one major niche component; or (2) may lack differentiated niches. In this study, certain sympatric members of the complex are shown to have clearly diverged in autecological characteristics that affect their distribution including: (1) P. glauca, P. hypoleuca, and P. sumatrana differ in growth characteristics, height at maturity, seedling germination requirements, and are found on soils with differing degrees of hydration; (2) P. discolor grows to a different height and on different substrate types than does P. multinervis; and (3) P. glauca and P. hypoleuca seedlings differ in transpiration characteristics and response to flooding and drought.