The impact of tropical peat fire on termite assemblage in Sumatra, Indonesia: reduced complexity of community structure and survival strategies
The impact of tropical peat fire on termite assemblage in Sumatra, Indonesia: reduced complexity of community structure and survival strategies
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热带泥炭火灾对印度尼西亚苏门答腊岛白蚁群落的影响：降低群落结构和生存策略的复杂性
DOI：
10.1093/ee/nvw116
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Neoh;K.-B.;Bong;L.- J.;Muhammad;A.;Itoh;M.;Kozan;O.;Takematsu;Y.;Yoshimura;T.
东南亚的热带泥炭沼泽森林约占全球泥炭地的72%。然而，为了农业扩张而排干泥炭后，大规模的森林开发导致了灾难性的泥炭火灾。在这项研究中，我们比较了白蚁组合在燃烧和未燃烧的泥炭在印度尼西亚苏门答腊岛。我们还确定了哪个分类组特别耐火干扰和与其在火影响的泥炭地中的持久性相关的特征。总体而言，火灾影响泥炭的白蚁物种丰富度比泥炭沼泽森林中发现的物种总数低40%。虽然估计的物种丰富度值在火灾影响的泥炭和泥炭沼泽森林没有显着差异，火灾改变了白蚁群落结构显着。只有鼻白蚁科的白蚁在火灾事件中幸存下来，而据报道对火灾和其他开放栖息地有弹性的白蚁科成员在火灾事件中消失了。在被烧毁的遗址中发现的鼻白蚁完全是木巢动物。这表明，白蚁在开放栖息地的干燥耐受性不是简单的潜在生存策略，但树枝和树皮可能提供了一个避难所，从热在火灾期间。结果还表明，在最近燃烧的泥炭和长期燃烧的泥炭物种组成的高度相似性意味着低的物种周转。因此，无论多少时间已经过去了，因为火灾影响泥炭被遗弃或耕作，栖息地复杂性的增加并不有利于殖民地的森林依赖组。
Tropical peat swamp forests in Southeast Asia account for approximately 72% of global peatland. However, extensive forest exploitation following peat drainage for agricultural expansion has been leading to catastrophic peat fires. In this study, we compared the termite assemblage in burnt and unburnt peats in Sumatra, Indonesia. We also identified which taxonomic group is particularly resistant to fire disturbance and the traits that correlate with its persistence in fire-impacted peatlands. Overall, the termite species richness in fire-impacted peats was up to 40% lower than that of the total species found in peat swamp forests. Although the estimated species richness values in fire-impacted peats and peat swamp forests were not significantly different, fire changed termite community structure significantly. Only termites of the family Rhinotermitidae survived in the fire event, whereas members of the Termitidae that were reportedly resilient to fire and open habitats elsewhere disappeared during the fire events. The rhinotermitids found in the burnt sites were exclusively wood nesters. This suggests that the desiccation tolerance of termites in open habitat is not the simple underlying survival strategy, but tree branches and barks might have provided a refuge from heat during fire. The result also suggests that the high similarity in species composition in recently burnt peats and long burnt peats implies low species turnover. Thus, regardless of how much time had passed since the fire-impacted peats were abandoned or cultivated, the increase in habitat complexity did not favor colonization by the forest-dependent group.