Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1326-1332 |
| Number of pages | 7 |
| Journal | Journal of Hydraulic Engineering |
| Volume | 134 |
| Issue number | 9 |
| Publication status | Published - 2008 |
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Hydraulic Resistance due to Aquatic Vegetation in Small Streams: Field Study. / Nikora, Vlad; Larned, Scott; Nikora, Nina; Debnath, Koustuv; Cooper, Glenn; Reid, Mike.
In: Journal of Hydraulic Engineering, Vol. 134, No. 9, 2008, p. 1326-1332.Research output: Contribution to journal › Article
TY - JOUR
T1 - Hydraulic Resistance due to Aquatic Vegetation in Small Streams: Field Study
AU - Nikora, Vlad
AU - Larned, Scott
AU - Nikora, Nina
AU - Debnath, Koustuv
AU - Cooper, Glenn
AU - Reid, Mike
PY - 2008
Y1 - 2008
N2 - This technical note examines vegetation effects on hydraulic resistance in small streams and suggests simple quantitative relationships for predicting and quantifying these effects using the plant characteristics with the greatest explanatory power. In particular, we examine the effects of aquatic plant biomass, stature, and architecture on hydraulic performance of five New Zealand streams representing a wide range of channel dimensions, flows, aquatic plant species, and assemblages. Comparisons among the vegetation parameters indicated that ratios of the site-averaged canopy height to the mean flow depth and of the site-averaged plant length to the mean flow depth were the best roughness descriptors. Effects of individual plant species and their characteristic patch patterns were not significant. The data from all sites collapsed around single lines, suggesting that general physical parameters of vegetation should be the primary determinants of hydraulic resistance in streams studied, not species-specific parameters, as often assumed.
AB - This technical note examines vegetation effects on hydraulic resistance in small streams and suggests simple quantitative relationships for predicting and quantifying these effects using the plant characteristics with the greatest explanatory power. In particular, we examine the effects of aquatic plant biomass, stature, and architecture on hydraulic performance of five New Zealand streams representing a wide range of channel dimensions, flows, aquatic plant species, and assemblages. Comparisons among the vegetation parameters indicated that ratios of the site-averaged canopy height to the mean flow depth and of the site-averaged plant length to the mean flow depth were the best roughness descriptors. Effects of individual plant species and their characteristic patch patterns were not significant. The data from all sites collapsed around single lines, suggesting that general physical parameters of vegetation should be the primary determinants of hydraulic resistance in streams studied, not species-specific parameters, as often assumed.
M3 - Article
VL - 134
SP - 1326
EP - 1332
JO - American Society of Civil Engineers, Journal of the Hydraulics Division
JF - American Society of Civil Engineers, Journal of the Hydraulics Division
SN - 0733-9429
IS - 9
ER -