Differential nutrient limitation and tree height control leaf physiology, supporting niche partitioning in tropical dipterocarp forests
Differential nutrient limitation and tree height control leaf physiology, supporting niche partitioning in tropical dipterocarp forests
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不同营养限制和树高控制叶片生理，支持热带龙脑林生态位分配
DOI：
10.1111/1365-2435.14094
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发表时间：
2022-06-29
影响因子：
5.2
通讯作者：
Rowland, Lucy
中科院分区：
文献类型：
--
作者：
Bartholomew, David C.;Banin, Lindsay F.;Rowland, Lucy
揭示低地热带森林环境生态位划分的机制对于理解当前物种分布的驱动因素和对环境变化的潜在脆弱性具有重要意义。热带森林结构和物种组成的变化跨越土壤梯度在婆罗洲短距离。然而，我们的理解如何土壤条件影响树木的生理，以及这些关系是否驱动生态位划分婆罗洲森林内仍然不完整。本研究评估了叶片生理功能如何在细尺度土壤梯度上随养分有效性而变化，以及这些关系是否因树高而异。此外，我们测试是否种内叶性状变异允许通才物种填充更广泛的环境。我们测量了沿着热带雨林的4种热带森林类型（冲积林、泥岩林、砂岩林和克兰加斯林）中13种龙脑香属树种的218棵树的叶特征，树高从4米到66米不等。
Revealing the mechanisms of environmental niche partitioning within lowland tropical forests is important for understanding the drivers of current species distributions and potential vulnerability to environmental change. Tropical forest structure and species composition change across edaphic gradients in Borneo over short distances. However, our understanding of how edaphic conditions affect tree physiology and whether these relationships drive niche partitioning within Bornean forests remains incomplete. This study evaluated how leaf physiological function changes with nutrient availability across a fine-scale edaphic gradient and whether these relationships vary according to tree height. Furthermore, we tested whether intraspecific leaf trait variation allows generalist species to populate a wider range of environments. We measured leaf traits of 218 trees ranging in height from 4 to 66 m from 13 dipterocarp species within four tropical forest types (alluvial, mudstone, sandstone and kerangas) occurring along an