• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Trophic Basis for Restoration of Fish Fauna in Restored Urban Streams
【24h】

Trophic Basis for Restoration of Fish Fauna in Restored Urban Streams

机译：恢复城市河流中恢复鱼类动物的Trophyc基础

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We evaluated the importance of terrestrial subsidies to fish populations in streams affected by urbanization including unrestored reaches, reaches with restored riparian zones and some channel restoration, and forested reaches that were below wastewater treatment plants (WTTPs). We examined the importance of terrestrial subsidies using stable isotopes of N and C, and using gut analyses of fishes. Fish were significantly more depleted in 13C at restored sites than at unrestored sites. This result is importance because it illustrates the increased role of riparian subsidies to the stream food web. This isotopic shift in the fishes is most likely due to increased use of detrital resources by aquatic macroinvertebrates, which were the most important component of fish diets, although increased use of terrestrial insects would also contribute to a lower 8-13C value in fish. Despite these trends, aquatic carbon was still the dominant basal resource for most fishes. As riparian regrowth continues, the importance of the terrestrial subsidy should also increase.

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