• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecography >The effects of green tree retention and subsequent prescribed burning on ground beetles (Coleoptera : Carabidae) in boreal pine-dominated forests
【24h】

The effects of green tree retention and subsequent prescribed burning on ground beetles (Coleoptera : Carabidae) in boreal pine-dominated forests

机译：在北方松树为主的森林中，绿化树保留和随后规定的燃烧对地面甲虫（鞘翅目：甲科）的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We studied how two methods to promote biodiversity in managed forests, i.e. green tree retention and prescribed fire, affect the assemblages of carabid beetles. Our experiment consisted of 24 study sites, each 3-5 ha in size, which had been prepared according to factorial design. Each of the eight treatment combinations determined by the two factors explored - tree retention level (0, 10, 50 m(3)/ha(-1) and uncut controls) and prescribed use of fire (yeso) - was replicated three times. We sampled carabids using pitfall traps one year after the treatments. Significantly more individuals were caught in most of the burned sites, but this difference was partially reflective of the trap-catches of Pterostichus adstrictus. The fire did not increase no. of P. adstrictus in the uncut sites as much as in the other sites. Species richness was significantly affected by both factors, being higher in the burned than in the unburned sites and in the harvested than in the unharvested sites. Many species were concentrated in the groups of retention trees in the burned sites, but only a few were in the unburned sites. The species turnover was greater in the burned than in the unburned sites, as indicated by the NMDS ordinations. Greater numbers of smaller sized species and proportion of brachypterous species were present in the burned sites. Fire-favored species, and also the majority of other species that prefer open habitats were more abundantly caught in the burned sites than in the unburned sites. Dead wood or logging waste around the traps did not correlate with the occurrence of species. We conclude that carabids are well adapted to disturbances, and that frequent use of prescribed fire is essential for the maintenance of natural assemblages of carabid beetles in the boreal forest. Small retention tree groups can not maintain assemblages of uncut forest, but they can be important by providing food, shelter and breeding sites for many species, particularly in the burned sites.
机译：我们研究了两种在人工林中促进生物多样性的方法，即绿树保留和规定的林火如何影响甲虫的组合。我们的实验由24个研究地点组成，每个研究地点的大小为3-5公顷，这些研究地点是根据析因设计而准备的。根据所探究的两个因素确定的八种处理组合中的每一种-重复了三个，分别确定了树的保留水平（0、10、50 m（3）/ ha（-1）和未砍伐的对照）和规定的使用火度（是/否）。次。在治疗一年后，我们使用陷阱陷阱对甲虫进行了采样。在大多数烧毁的地点中，明显有更多的人被捕，但是这种差异部分反映了Pterostichus adstrictus的陷阱。火灾没有增加。未切割部位的Ad。adstrictus和其他部位一样。物种丰富度受到这两个因素的显着影响，被烧毁的比未烧毁的地区和收割的要高。许多物种集中在被烧毁地点的保留树群中，但是只有少数物种处于未烧毁地点。如NMDS指令所示，被烧物种的周转率高于未烧物种的周转率。烧毁的地点中存在着大量的小规格物种和短鳞类物种。受火类喜爱的物种以及大多数其他喜欢开放栖息地的物种在未燃烧地点的捕捞量更多。陷阱周围的枯木或伐木废物与物种的发生无关。我们得出的结论是，甲壳动物很容易适应干扰，频繁使用规定的火对于维护北方森林中甲壳动物的自然组合至关重要。小型保留树木群无法维持未砍伐的森林，但通过为许多物种提供食物，庇护所和繁殖场所，尤其是在被烧毁的土地上，它们可能很重要。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号