Including dynamics in the equation: Tree growth rates and host specificity of vascular epiphytes
Including dynamics in the equation: Tree growth rates and host specificity of vascular epiphytes
复制标题
在方程中包括动力学：树木生长速率和维管附生植物的宿主特异性
DOI：
10.1111/1365-2745.13333
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发表时间：
2020
影响因子：
5.5
通讯作者：
Wagner
中科院分区：
文献类型：
--
作者：
Wagner
林冠是丰富生物群的家园。一个显著的特征是栖息地建设树木的动态，它们正在生长并最终消失。树种在生长速度、最终大小和寿命方面有很大差异。然而，这些固有的动态一直是研究维管附生植物（维管植物栖息在树上而不寄生它们）的宿主特异性的盲点-尤其是因为树木的生长速度和寿命通常是未知的高度多样化的热带森林。本研究旨在解决这一盲点。我们比较了在巴拿马的一个低地潮湿森林中的四个重点树种的285个个体上发现的真菌丰度（>23,000个个体）。从一个永久性的树木地块重复的胸径普查数据提供了独特的机会来估计我们的抽样树木的年龄。我们比较了树木寿命对寄主偏好的相对重要性与其他寄主树木特征，即小气候条件和树皮的酸度，粗糙度和稳定性。所研究的树种在寄主质量和附生植物物种的寄主偏好部分不同。关于相对寄主树质量的结论在很大程度上取决于是否考虑不同的树木生长速率。比较这些结论，让重要的洞察树的寿命在塑造真菌群落的作用。将树木性状差异与所观察到的重点树种中附生植物的分布相关联，表明了各种树木特征的同时作用如何导致宿主偏倚。这项研究突出了大量的，但到目前为止，隐藏的作用，不同的树木生长速度的寄主树特异性的维管真菌。未来的研究需要充分考虑这一可能的混杂因素，以避免虚假的结论。
The forest canopy is home to a rich biota. One salient feature are the dynamics of the habitat‐building trees, which are growing and eventually vanishing. Tree species strongly differ in growth rates, final size and longevity. Nevertheless, these inherent dynamics have been a blind spot in studies on host specificity of vascular epiphytes (vascular plants dwelling on trees without parasitizing them)—not least because tree growth rates and longevity are usually unknown in highly diverse tropical forests. The present study aims at tackling this blind spot.We compared epiphyte abundances (>23,000 individuals) found on 285 individuals of four focal tree species in a lowland moist forest in Panama. Data on repeated dbh censuses from a permanent tree plot provided the unique opportunity to estimate the age of our sampled trees. We compared the relative importance of tree longevity for host biases with that of other host tree characteristics, namely microclimatic conditions and bark acidity, rugosity and stability.The studied tree species differ in host quality and epiphyte species partly differ in host preferences. The conclusions concerning relative host tree quality depend hugely on whether or not different tree growth rates are considered. Comparing these conclusions allows important insights into the role of tree longevity in shaping epiphyte communities. Relating tree trait differences to the observed distributions of epiphytes among the focal tree species shows how the simultaneous action of various tree characteristics causes host biases.Synthesis. This study highlights the substantial but, up to now, hidden role of different tree growth rates for host tree specificity of vascular epiphytes. Future investigations need to consider this possibly confounding factor adequately to avoid spurious conclusions.
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影响因子：
3.9
作者：
Brown JH
通讯作者：
Brown JH
Leochilus（兰科）专着
影响因子：
1.7
作者：
M. W. Chase
通讯作者：
M. W. Chase
影响因子：
1.7
作者：
Einzmann, Helena Julia Regina;Zotz, Gerhard
通讯作者：
Zotz, Gerhard
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
A. P. W. Schimper
通讯作者：
A. P. W. Schimper
影响因子：
4.8
作者：
Bullock, SH;Turner, RM;Rodríguez-Navarro, JL
通讯作者：
Rodríguez-Navarro, JL