A remote sensing based methodology of delineating stream channel morphology

2008 ◽  
Author(s):  
Mansoor Delali Leh ◽  
Sreekala Gopalapillai Bajwa ◽  
Indrajeet Chaubey ◽  
Jackson Cothren
Keyword(s):  
Remote Sensing ◽  
Channel Morphology ◽  
Stream Channel

scholarly journals Quantifying variability in stream channel morphology

2003 ◽  
Vol 39 (9) ◽  
Author(s):  
Kristie Trainor ◽  
Michael Church
Keyword(s):  
Channel Morphology ◽  
Stream Channel

scholarly journals Impacts of Sand and Gravel Quarrying on the Stream Channel and Surrounding Environment

2017 ◽  
Vol 4 (1) ◽  
pp. 7-12
Author(s):  
Maharabam Anjali Devi ◽  
Lunghim Rongmei
Keyword(s):  
Remote Sensing ◽  
Remote Sensing And Gis ◽  
River Channel ◽  
Natural Process ◽  
Sediment Supply ◽  
River Morphology ◽  
Stream Channel ◽  
Gravel Mining ◽  
Surrounding Environment ◽  
Sand And Gravel

The longtime sustainability of river channel in the natural process depends on the gradient, volume of water, sediment supply and deposition in the river. Naturally, rivers maintain balance of river channel in all stage of the cycle of erosion. However, human activity mainly sand and gravel mining frequently disturb the balance that has much impact on the river morphology. The Imphal River between Motbung to Awang Leikinthabi is one of the worse sand and gravel-querying regions in Manipur. Hence, the main aim of this paper is to assess the impacts of querying on riverine landform and surrounding environment by using Remote Sensing and GIS.

Ecological impacts on aquatic macroinvertebrates following upland stream invasion by a ponded pasture grass (Glyceria maxima) in southern Australia

2004 ◽  
Vol 55 (7) ◽  
pp. 709 ◽  
Author(s):  
Amber Clarke ◽  
P. S. Lake ◽  
Dennis J. O'Dowd
Keyword(s):  
Ecosystem Engineer ◽  
High Capacity ◽  
Ecosystem Processes ◽  
Channel Morphology ◽  
Ecological Impacts ◽  
Freshwater Wetlands ◽  
Stream Channel ◽  
Pasture Grass ◽  
Functional Feeding Group ◽  
Sediment Matrix

Glyceria maxima (Reed sweet-grass), an emergent aquatic grass native to Eurasia, has naturalised in North America, New Zealand and southern Australia. Introduced as a ponded pasture species, it threatens native biodiversity and ecosystem processes in freshwater wetlands and waterways. We compared paired sections, either invaded or not invaded by G. maxima, of three upland streams in Gippsland, Victoria, Australia to infer its impacts on macroinvertebrate abundance, morphospecies density, and morphospecies and functional feeding group (FFG) composition. Its potential effects in altering sedimentation were explored by comparing stream channel morphology in paired stream sections at one site. Invasion by G. maxima appears to drive changes in macroinvertebrate morphospecies composition and FFG composition, reducing a diverse array of macroinvertebrates to a more uniform fauna. The estimated volume of plant/sediment matrix in a 50 m invaded stream section was around 1100 m3, nearly 15-fold greater than in an adjacent uninvaded stream section. Glyceria maxima is an autogenic ecosystem engineer, with the ability to convert sections of fast-flowing aerobic streams into partially anaerobic swamps. By generating a root-mat swamp with a high capacity to process nutrients, G. maxima may facilitate its own growth and spread, as well as that of secondary invaders.

The impacts of ski slope development on stream channel morphology in the White River National Forest, Colorado, USA

Geomorphology ◽  
2009 ◽  
Vol 103 (3) ◽  
pp. 375-388 ◽  
Author(s):  
Gabrielle C.L. David ◽  
Brian P. Bledsoe ◽  
David M. Merritt ◽  
Ellen Wohl
Keyword(s):  
Channel Morphology ◽  
National Forest ◽  
Stream Channel ◽  
White River
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