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Ant community structure during forest succession in a subtropical forest in South-East China

机译:东南亚热带森林演替过程中的蚂蚁群落结构

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Understanding how communities respond to environmental gradients is critical to predict responses of species to changing habitat conditions such as in regenerating secondary habitats after human land use. In this study, ground-living ants were sampled with pitfall traps in 27 plots in a heterogeneous and diverse subtropical forest to test if and how a broad set of environmental variables including elevation, successional age, and tree species richness influence ant diversity and community composition. In total, 13,441 ant individuals belonging to 71 species were found. Ant abundance was unrelated to all environmental variables. Rarefied ant species richness was negatively related to elevation, and Shannon diversity decreased with shrub cover. There was considerable variation in ant species amongst plots, associated with elevation, successional age, and variables related to succession such as shrub cover. It is shown that younger secondary forests may support a species-rich and diverse community of ants in subtropical forests even though the species composition between younger and older forests is markedly different. These findings confirm the conservation value of secondary subtropical forests, which is critical because subtropical forests have been heavily exploited by human activities globally. However, the findings also confirm that old-growth forest should have priority in conservation as it supports a distinct ant community. Our study identifies a set of ant species which are associated with successional age and may thus potentially assist local conservation planning. (C) 2014 Elsevier Masson SAS. All rights reserved.
机译:了解社区如何应对环境梯度对于预测物种对不断变化的栖息地条件的响应至关重要,例如在人类土地使用后再生次生栖息地方面。在这项研究中,对生活中的蚂蚁进行了采样,在一个异质多样的亚热带森林的27个样地中使用陷阱陷阱进行了测试,以测试包括海拔,演替年龄和树木物种丰富度在内的一系列环境变量是否以及如何影响蚂蚁的多样性和群落组成。总共发现了13441个蚂蚁个体,它们属于71种。蚂蚁的丰度与所有环境变量无关。稀有蚂蚁物种丰富度与海拔呈负相关,香农多样性随灌木覆盖而降低。地块之间的蚂蚁种类差异很大,与海拔,演替年龄以及与演替有关的变量(例如灌木覆盖)相关。研究表明,即使年轻和老龄森林之间的物种组成明显不同,年轻的次生森林也可能在亚热带森林中支持物种丰富和多样化的蚂蚁群落。这些发现证实了亚热带次生林的保护价值,这是至关重要的,因为亚热带森林已被全球人类活动大力开发。但是,研究结果还证实,由于其支持独特的蚂蚁群落,因此应优先考虑保护老树林。我们的研究确定了与演替年龄相关的一组蚂蚁物种,因此可能有助于当地的保护规划。 (C)2014 Elsevier Masson SAS。版权所有。

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