• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of forest research >Ecological functions of persistent Japanese cedar litter in structuring stream macroinvertebrate assemblages
【24h】

Ecological functions of persistent Japanese cedar litter in structuring stream macroinvertebrate assemblages

机译：持久性日本雪松凋落物在构造河流大型无脊椎动物组合中的生态功能

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

Stream macroinvertebrate assemblages are expected to be affected by the abundance and constitution of litter from surrounding forests. We compared forest floor cover, overland flow, stream environment, and stream macroinvertebrate assemblages between the catchments of a Japanese cedar plantation (CP) and a primary deciduous forest (DF). Both systems experience excessive deer browsing. Understory vegetation cover was higher in the DF than in the CP in summer, although cover was low (< 20 %), possibly because of excessive deer browsing. Litter cover was much higher in the CP than in the DF in summer as a result of the long abscission period, slow breakdown, and low rate of dispersal of Japanese cedar litter compared to deciduous litter. Monthly overland flow was always lower in the CP than in the DF, and substrate size was smaller in the DF stream. In the CP, cedar litter accumulated in the stream, probably because of its low breakdown rate and morphology, and abundant shredder taxa characterized the macroinvertebrate assemblage. In contrast, abundant burrower taxa characterized the macroinvertebrate assemblage in the DF stream. These results imply that Japanese cedar litter functions in structuring the macroinvertebrate assemblage by supplying persistent food resources for detritivores, and by buffering fine sedimentation via overland flow under excessive deer browsing.
机译：溪流大型无脊椎动物种群预计会受到周围森林凋落物的丰度和组成的影响。我们比较了日本雪松人工林（CP）和原始落叶林（DF）的集水区之间的森林地表覆盖率，陆上径流，河流环境和河流大型无脊椎动物群落。两个系统都经历了过多的鹿浏览。夏季，DF的地下植被覆盖率高于CP，尽管其覆盖率较低（<20％），这可能是由于鹿的过度浏览所致。与落叶落叶相比，日本雪松凋落物的脱落期长，分解速度慢，散布率低，因此其夏季的凋落物覆盖率大大高于DF。 CP的每月陆上流量总是低于DF，而DF流中的底物尺寸较小。在CP中，雪松凋落物在溪流中积累，这可能是由于其低分解率和形态，以及大型无脊椎动物组合具有丰富的切碎分类群。相反，丰富的穴居生物群是DF流中大型无脊椎动物组合的特征。这些结果表明，日本雪松凋落物通过提供持久的食物资源给有害生物，并在过量的鹿群浏览下通过陆上水流来缓冲细微的沉积作用，从而在构造大型无脊椎动物中起作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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