scholarly journals Stream Temperature Response to Three Riparian Vegetation Scenarios by Use of a Distributed Temperature Validated Model

2010 ◽  
Vol 44 (6) ◽  
pp. 2072-2078 ◽  
Author(s):  
T. R. Roth ◽  
M. C. Westhoff ◽  
H. Huwald ◽  
J. A. Huff ◽  
J. F. Rubin ◽  
...  
2013 ◽  
Vol 43 (11) ◽  
pp. 993-1005 ◽  
Author(s):  
Elizabeth Cole ◽  
Michael Newton

Determining the effectiveness of different riparian buffers for mitigating forest-harvesting impacts on stream temperatures continues to be of interest throughout the world. Four small, low or medium elevation streams in managed western Oregon forests were studied to determine how the arrangement and amount of streamside retention strips (buffers) in clear-cut units influenced stream temperatures. Buffers included (i) no tree, (ii) predominantly sun-sided 12 m wide partial, and (iii) two-sided (Best Management Practice, (BMP)) 15–30 m wide buffers. Harvested units alternated with uncut units along 1800–2600 m study reaches. Impacts of harvesting on stream temperatures were determined by time series comparisons of postharvest and preharvest regressions. Trends for daily maximum and mean stream temperature significantly increased after harvest in no tree buffer units. Partial buffers led to slight (<2 °C) or no increased warming. BMP units led to significantly increased warming, slight, or no increased warming. Temperature responses in uncut units appeared to be linked to responses in upstream harvested units. In many instances, when harvested units exhibited significantly higher postharvest trends, lower trends were observed in the uncut units downstream. Stream temperature trends of 7 day moving maxima indicated warming through the no tree buffer units and some of the BMP units. Peaks in maxima were not maintained in downstream units. Stream temperature responses were related to buffer implementation and stream features, relating to cooling and warming.


2014 ◽  
Vol 31 (8) ◽  
pp. 975-992 ◽  
Author(s):  
K. Matheswaran ◽  
M. Blemmer ◽  
P. Thorn ◽  
D. Rosbjerg ◽  
E. Boegh

2018 ◽  
Vol 624 ◽  
pp. 480-490 ◽  
Author(s):  
Pierre Loicq ◽  
Florentina Moatar ◽  
Yann Jullian ◽  
Stephen J. Dugdale ◽  
David M. Hannah

Author(s):  
Jana S. Stewart ◽  
Stephen M. Westenbroek ◽  
Matthew G. Mitro ◽  
John D. Lyons ◽  
Leah E. Kammel ◽  
...  

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 519
Author(s):  
Nicole Durfee ◽  
Carlos G. Ochoa ◽  
Gerrad Jones

This study examined the relationship between stream temperature and environmental variables in a semiarid riparian corridor in northcentral Oregon, USA. The relationships between riparian vegetation cover, subsurface flow temperature, and stream temperature were characterized along an 800 m reach. Multiple stream temperature sensors were located along the reach, in open and closed canopy areas, with riparian vegetation cover ranging from 4% to 95%. A support vector regression (SVR) model was developed to assess the relationship between environmental characteristics and stream temperature at the larger valley scale. Results show that air temperature was highly correlated with stream temperature (Pearson’s r = 0.97). Based on the ANOVA, no significant (p < 0.05) differences in stream temperature levels were found among sensor locations at the valley scale, irrespective of percent vegetation cover. Channel subsurface temperature levels from an intermittent flow tributary were generally cooler than those in the perennial stream in the summer and warmer during winter months, indicating that the tributary may have a localized moderating effect on stream temperature. SVR model results showed that air temperature, followed by streamflow, was the strongest variable influencing stream temperature. In general, riparian area land cover showed little effect on stream temperature along the entire riparian corridor. This research indicates that air temperature, subsurface flow, and streamflow are important variables affecting the stream temperature variability observed in the study area.


2016 ◽  
Author(s):  
Heidelinde Trimmel ◽  
Philipp Weihs ◽  
David Leidinger ◽  
Herbert Formayer ◽  
Gerda Kalny

Abstract. The influence of expected changes in heat wave intensity during the 21st century on the temperatures of an pre-alpine river are simulated and the mitigating effects of riparian vegetation shade on the radiant and turbulent energy fluxes analysed. Minor stream water temperature increases are modelled within the first half of the century, but a more significant increase is predicted for the period 2071–2100. The magnitude of maximum, mean and minimum stream temperature rises for a 20 year return period heat event was estimated to be in the region of 3 °C. Additional riparian vegetation is not able to fully mitigate the expected temperature rise caused by climate change, but can reduce maximum, mean and minimum stream temperatures by 1 to 2° C. Removal of existing vegetation amplifies stream temperature increases. Maximum stream temperatures could increase by more than 4 °C even in yearly heat events.


Author(s):  
S. Westenbroek ◽  
J. S. Stewart ◽  
C. A. Buchwald ◽  
M. Mitro ◽  
J. D. Lyons ◽  
...  

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