Creating diverse habitat environment in ecological water resources management

Jian-Ping Suen, Ching Nuo Chen, Chih Heng Tsai

研究成果: Conference contribution

摘要

Recent developments in instream flow methodology have shifted from minimum flow regulation to the regime-based approach, recognizing that natural streamflow variation is an essential component in sustaining aquatic ecosystem biodiversity. However, when restoring streamflow variability within a water resources management project, it is difficult to precisely connect a specific species or community to its flow variability requirements. One alternate approach is to potentially promote aquatic biodiversity by increasing both the spatial and temporal habitat diversity of a river system. In this paper, a two dimensional numerical model is used to simulate depth and velocity distributions for multiple streamflow conditions at a stream section downstream of a reservoir. The model is based on depth-averaged theory and is specific to an alluvial river with a movable bed. Fuzzy concepts are applied to modeled pools, riffles, and other habitat units - which are defined by depth and velocity - to assign approximately 290,000 mesh areas of the numerical model under different streamflow conditions. Both spatial and temporal habitat variation is evaluated to indicate which set of streamflow conditions maintains the more diverse habitat objective. This allows downstream flow-based habitat diversity to become an ecological objective of reservoir operation.

原文English
主出版物標題World Environmental and Water Resources Congress 2008
主出版物子標題Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008
DOIs
出版狀態Published - 2008 十二月 1
事件World Environmental and Water Resources Congress 2008: Ahupua'a - Honolulu, HI, United States
持續時間: 2008 五月 122008 五月 16

出版系列

名字World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008
316

Other

OtherWorld Environmental and Water Resources Congress 2008: Ahupua'a
國家/地區United States
城市Honolulu, HI
期間08-05-1208-05-16

All Science Journal Classification (ASJC) codes

  • 管理、監督、政策法律
  • 水科學與技術
  • 污染

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