TY - JOUR
T1 - Assessment of environmental conditions of Nan-Shih stream in Taiwan
AU - Hu, Tung Jer
AU - Wang, Hsiao Wen
AU - Lee, Hong Yuan
N1 - Funding Information:
The authors would like to thank Water Resources Agency and NSC-92-2211-E-267-004 for financial support. The authors also thank C.H. Lin and W.L. Lin for the identification of aquatic insects and algae. The authors of this work benefited greatly from discussions with Mr. S.S. Shih and Mr. A.M. Borghuis.
PY - 2007/4
Y1 - 2007/4
N2 - Restoration is a complex endeavor requiring the understanding of the degrading environment before applying any improvement measure. Environmental and ecological data in Nan-Shih stream were investigated in this study to assess its stream condition. Based on the data collected, the Index of Biotic Integrity (IBI index) which takes fish species as the major target, the Family-level Biotic Index (FBI) aquatic insects Hilsenhoff index and the Genus Index (GI) of algae were thus analyzed to quantify Nan-Shih stream's ecological system. The indices above were then applied on Index of Stream Condition (ISC index) to describe the overall river condition. Modified sub-indices, including the hydrology, physical form, streamside zone, water quality, and aquatic life, were made and used to provide baseline assessment information. ISC value is 33.89 evaluated as marginal level, in which hydrology sub-index score was the lowest indicating impact of artificial structures affecting flow significantly. The recommendations of the river corridor restoration and the habitat improvement were thus proposed as a reference for river management.
AB - Restoration is a complex endeavor requiring the understanding of the degrading environment before applying any improvement measure. Environmental and ecological data in Nan-Shih stream were investigated in this study to assess its stream condition. Based on the data collected, the Index of Biotic Integrity (IBI index) which takes fish species as the major target, the Family-level Biotic Index (FBI) aquatic insects Hilsenhoff index and the Genus Index (GI) of algae were thus analyzed to quantify Nan-Shih stream's ecological system. The indices above were then applied on Index of Stream Condition (ISC index) to describe the overall river condition. Modified sub-indices, including the hydrology, physical form, streamside zone, water quality, and aquatic life, were made and used to provide baseline assessment information. ISC value is 33.89 evaluated as marginal level, in which hydrology sub-index score was the lowest indicating impact of artificial structures affecting flow significantly. The recommendations of the river corridor restoration and the habitat improvement were thus proposed as a reference for river management.
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U2 - 10.1016/j.ecolind.2006.04.003
DO - 10.1016/j.ecolind.2006.04.003
M3 - Article
AN - SCOPUS:33846642496
VL - 7
SP - 430
EP - 441
JO - Ecological Indicators
JF - Ecological Indicators
SN - 1470-160X
IS - 2
ER -