Effects of ice storm on species richness and abundance of resident birds in subtropical forest in southern China
Effects of ice storm on species richness and abundance of resident birds in subtropical forest in southern China
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冰暴对我国南方亚热带森林物种丰富度和留鸟丰度的影响
DOI：
10.1111/1749-4877.12442
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发表时间：
2020
影响因子：
3.3
通讯作者：
Fasheng Zou
中科院分区：
文献类型：
--
作者：
Myung‐Bok Lee;Yongmi Hong;Zufei Shu;Qiang Zhang;Fasheng Zou
2008年1月至2月，中国南方发生了一次严重的冰暴。这场风暴破坏了近2100万公顷的林地，许多树木的分支、树干断裂和树干弯曲。这种自然干扰为研究极端气候事件对森林鸟类的影响提供了一个独特的机会。利用层次多物种占有模型（物种丰富度，27种）和N混合模型（丰度，3种），研究了暴雨对华南亚热带森林留鸟物种的影响。在广东省车八岭国家级自然保护区，采用雾网法对鸟类进行采样，风暴前后每月采样一次，连续1年。考虑到年与月之间的温度变化，我们将月平均温度作为额外的协变量纳入模型。风暴前观察到的物种丰富度更高。估计物种丰富度（从层次模型）也往往是更大的风暴前比后，虽然这些估计的95%贝叶斯可信区间重叠。温度对物种丰富度估计值有负面影响，表明冬季物种丰富度较高。在捕获最多的三种物种中，栗色短脚鹬（Hemixos castanonotus）的丰度在风暴后显著下降。其他两个物种，灰树（Dendrocitta formosae）和Huet的Fulvetta（Alcippe hueti）对风暴的反应不明显。我们的研究表明，2008年冰风暴可能不会对亚热带森林中留鸟的物种丰富度产生显着影响;然而，这种影响可能是物种特异性的，对某些物种的种群产生负面影响。
Between January and February 2008, a severe ice storm occurred in southern China. The storm damaged nearly 21 million hectares of forest lands with broken branch, trunk breakage, and stem bending of many trees. This natural disturbance provides a unique opportunity to study impacts of extreme climatic event on forest birds. Using hierarchical multi‐species occupancy model (species richness; 27 species) and N‐mixture model (abundance; 3 species), we investigated how the storm affected resident bird species in subtropical forest in southern China. We sampled birds at Chebaling National Nature Reserve in Guangdong Province, monthly for 1 year each before and after the storm by mist nets. To take into account variations in temperature between years and between months, we incorporated monthly mean temperature into the models as an additional covariate. Observed species richness was greater before the storm. Estimated species richness (from the hierarchical model) also tended to be greater before than after the storm although 95% Bayesian credible intervals of these estimates were overlapped. Temperature showed a negative effect on estimated species richness, indicating greater species richness during winter. Among three species captured the most, abundance of Chestnut Bulbul (Hemixos castanonotus) significantly decreased after the storm. Other two species, Grey Treepie (Dendrocitta formosae) and Huet's Fulvetta (Alcippe hueti) showed insignificant responses to the storm. Our study indicates that the 2008 ice storm may not have a significant impact on species richness of resident birds in subtropical forest; however, the effect can be species‐specific and negative to some species’ population.