The responses of leaf litter ant communities to wildfires in the Brazilian Amazon: a multi-region assessment
The responses of leaf litter ant communities to wildfires in the Brazilian Amazon: a multi-region assessment
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落叶蚁群落对巴西亚马逊野火的反应：多区域评估
DOI：
10.1007/s10531-012-0426-8
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发表时间：
2013
影响因子：
3.4
通讯作者：
M. Cochrane
中科院分区：
文献类型：
--
作者：
J. Silveira;J. Barlow;R. Andrade;J. Louzada;L. Mestre;S. Lacau;R. Zanetti;Izaya Numata;M. Cochrane
在亚马逊地区，火经常被用作土地管理的工具，但往往会蔓延到周围的森林，对森林生物多样性造成潜在的严重影响。我们调查了巴西亚马逊地区（罗赖马、帕拉、阿克里和马托格罗索）四个地理位置不同的地区，在我们取样之前8个月到10年的森林大火对蚂蚁群落的影响。我们建立了7-12个样带，每个500米，在每个地区的烧毁和未烧毁的森林，调查火灾对森林结构和落叶层蚂蚁群落的影响，这是使用Winkler袋采样。在阿克里州和马托格罗索州最近被烧毁的森林中，火灾对森林结构的影响更为剧烈，而罗赖马州和帕拉州较早被烧毁的森林的影响则更为微妙。蚂蚁物种丰富度之间没有不同的烧毁和未烧毁的地区，但社区组成不同的烧毁和控制森林在所有地区，除马托格罗索州。在物种一级，指标物种分析表明，在所有区域，除了阿克里，数量有限的物种是未燃烧的控制森林的重要指标。森林结构变量和落叶量都是重要的蚂蚁群落的形成，但它们的相对重要性不同地区。我们的研究结果表明，被烧毁的森林有不同的蚂蚁物种群落从未被烧毁的森林，这些差异仍然是明显的干扰后10年，突出了亚马逊火灾管理的有效政策的重要性。
Fire is frequently used as tool for land management in the Amazon, but often escapes into surrounding forests, with potentially severe impacts for forest biodiversity. We investigated the effects of single wildfires on ant communities in four geographically distinct regions of the Brazilian Amazon (Roraima, Pará, Acre and Mato Grosso) where forests had burned between 8 months and 10 years before our sampling. We established 7–12 transects, 500 m each, in burned and unburned forests in each region to investigate the effects of fire on forest structure and leaf litter ant communities, which were sampled using Winkler sacks. Fire effects on forest structure were more drastic in the most recently burned forests in Acre and Mato Grosso, while the impacts of older burns in Roraima and Pará were more subtle. Ant species richness was not different between burnt and unburned areas, but community composition differed between burned and control forests in all regions except Mato Grosso. At the species level, indicator species analysis showed that a limited number of species were significant indicators of unburned control forests in all regions, except Acre. Forests structure variables and leaf litter volume were all important in shaping ant communities, but their relative importance varied between regions. Our results indicate that burned forest have different ant species communities from unburned forests, and those differences are still apparent 10 years after the disturbance, highlighting the importance of effective policies for fire management in Amazon.
影响因子：
2.1
作者：
J. Barlow;J. Silveira;M. Cochrane
通讯作者：
J. Barlow;J. Silveira;M. Cochrane