Understanding Constraints on Submersed Vegetation Distribution in a Large, Floodplain River: the Role of Water Level Fluctuations, Water Clarity and River Geomorphology

Wetlands ◽  
2021 ◽  
Vol 41 (5) ◽  
Author(s):  
Alicia M. Carhart ◽  
John E. Kalas ◽  
James T. Rogala ◽  
Jason J. Rohweder ◽  
Deanne C. Drake ◽  
...  
Keyword(s):  
Water Level ◽  
Water Clarity ◽  
Water Level Fluctuations ◽  
Vegetation Distribution ◽  
Floodplain River ◽  
River Geomorphology ◽  
Large Floodplain River

scholarly journals Water physicochemistry and benthic macroinvertebrate communities in a tropical reservoir: The role of water level fluctuations and water depth

Limnologica ◽  
2015 ◽  
Vol 55 ◽  
pp. 13-20 ◽  
Author(s):  
Francis S. Magbanua ◽  
Nikki Yvette B. Mendoza ◽  
Christine Jewel C. Uy ◽  
Christoph D. Matthaei ◽  
Perry S. Ong
Keyword(s):  
Water Level ◽  
Water Depth ◽  
Water Level Fluctuations ◽  
Benthic Macroinvertebrate ◽  
Macroinvertebrate Communities ◽  
Tropical Reservoir

The role of water-level fluctuations in shallow lake ecosystems – workshop conclusions

Hydrobiologia ◽  
2003 ◽  
Vol 506-509 (1-3) ◽  
pp. 23-27 ◽  
Author(s):  
Hugo Coops ◽  
Meryem Beklioglu ◽  
Thomas L. Crisman
Keyword(s):  
Water Level ◽  
Shallow Lake ◽  
Water Level Fluctuations ◽  
Lake Ecosystems

Conceptualizing alternate regimes in a large floodplain-river ecosystem: Water clarity, invasive fish, and floodplain vegetation

2020 ◽  
Vol 264 ◽  
pp. 110516 ◽  
Author(s):  
Kristen L. Bouska ◽  
Jeffrey N. Houser ◽  
Nathan R. De Jager ◽  
Deanne C. Drake ◽  
Scott F. Collins ◽  
...  
Keyword(s):  
Water Clarity ◽  
River Ecosystem ◽  
Invasive Fish ◽  
Floodplain Vegetation ◽  
Floodplain River ◽  
Large Floodplain River

6. An Investigation of the Spatial Differences in Mercury Burdens of Small Fish in a St-Lawrence River Impoundment Reservoir: the Role of Water Level Fluctuations

2016 ◽  
Author(s):  
Michele Parisien
Keyword(s):  
Water Level ◽  
High Water ◽  
Water Level Fluctuations ◽  
Small Fish ◽  
Water Reservoirs ◽  
Hydroelectric Reservoirs ◽  
Spatial Differences ◽  
Reducing Bacteria ◽  
St Lawrence River

In many hydroelectric reservoirs across Canada, fish exhibit elevated mercury burdens. This is thought to occur due to the flooding of soil with water level fluctuations. Periods ofhigh water level may cause mercury from shoreline soil to be released into the water, which may make it available for methylation by sulfur-reducing bacteria in the sedimentand phytoplankton on plants. The amount of methylmercury produced during periods of high water level may depend on the topography of the shoreline; if the shoreline has agentle slope, more of its surface area would be covered during rises in water level than if the shoreline has a steep slope. I hypothesize that bays within a reservoir that have a gentle slope and a relatively large amount of vegetation (vegetation provides habitat for periphyton) will have more mercury than steeply-sloped bays with little vegetation. Totest this hypothesis, I have collected 10 each of the 3 most abundant fish (≤100 mm) from 3 bays in eastern Lake St. Lawrence (an impoundment reservoir with water fluctuations ≤2meters throughout the year) at Massena, NY. I will use stable isotopes to infer the trophic level and food web of each fish in order to determine spatial patterns of mercurydistribution. This study may improve our knowledge of mercury methylation patters in water reservoirs, and provide us with information necessary to properly manage the StLawrenceRiver water reservoirs.   

Structural damage to carbonate pillar hazardous rock masses subject to long-term water level fluctuations in the Three Gorges reservoir area, China

2021 ◽  
pp. qjegh2021-044
Author(s):  
Bolin Huang ◽  
Xingchen Dong ◽  
Chao Yang ◽  
Zhen Qin ◽  
Peng Zhang
Keyword(s):  
Rock Mass ◽  
Water Level ◽  
Structural Damage ◽  
Water Level Fluctuations ◽  
Three Gorges Reservoir Area ◽  
Three Gorges ◽  
Rock Masses ◽  
The Three Gorges

Given the wide distribution of carbonate pillars in the Three Gorges reservoir area, there is a need to investigate the possible structural damage they experience from long-term water level fluctuations. This study analyzed the coupled effects of the improved time-dependent crack propagation pattern and failure modes of structural rock masses under stress-seepage using the Jianchuandong pillar hazardous rock mass (JCD) as a case study. A new crack simulation method based on FLAC3Dis proposed in which the interface element is immediately set on the surface of the yielding zone during the calculation step when a zone yields under tensile or shear stress. The two zones are directly separated during the tension or shearing of the bond at the contact surface. The JCD simulations illustrated that fractures and failure zones within the rock mass would propagate along the existing vertical cracks and extend to the base toe. The base rock mass would experience fracturing, finally leading to failure of the entire rock mass. The presented model provides sufficiently accurate predictions and is an optional method for analyzing time-dependent failure of pillar hazardous rock masses subject to water level fluctuations.Thematic collection: This article is part of the Role of water in destabilizing slopes collection available at: https://www.lyellcollection.org/cc/Role-of-water-in-destabilizing-slopes

AUTOMATIC WATER LEVEL MONITORING WITH IOT AND LPWAN

2019 ◽  
pp. 95-103
Author(s):  
Krum Videnov ◽  
Vanya Stoykova
Keyword(s):  
Water Level ◽  
Real Time ◽  
Early Warning ◽  
Water Sources ◽  
Water Levels ◽  
Water Level Fluctuations ◽  
Level Monitoring ◽  
Water Level Monitoring

Monitoring water levels of lakes, streams, rivers and other water basins is of essential importance and is a popular measurement for a number of different industries and organisations. Remote water level monitoring helps to provide an early warning feature by sending advance alerts when the water level is increased (reaches a certain threshold). The purpose of this report is to present an affordable solution for measuring water levels in water sources using IoT and LPWAN. The assembled system enables recording of water level fluctuations in real time and storing the collected data on a remote database through LoRaWAN for further processing and analysis.

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