Mechanical harvester removes invasive aquatic weeds to restore water quality and fish habitat values on the Burdekin floodplain

2020 ◽  
Vol 21 (3) ◽  
pp. 187-197
Author(s):  
Nathan J. Waltham ◽  
Merv Pyott ◽  
Christina Buelow ◽  
Lynise Wearne
Keyword(s):  
Water Quality ◽  
Fish Habitat ◽  
Aquatic Weeds ◽  
Mechanical Harvester

Fish Habitat: Essential Fish Habitat and Rehabilitation

1999 ◽  
Keyword(s):  
Water Quality ◽  
Coho Salmon ◽  
Action Plan ◽  
Fish Habitat ◽  
Coast Range ◽  
Private Funding ◽  
Public And Private ◽  
Fish Stocks ◽  
Habitat Alterations ◽  
European Settlement

<em>Abstract.</em> —The Coquille watershed contains the largest coastal river originating within the Coast Range of Oregon. The Coquille River presently supports over 57 species of fish including coho salmon <em>Oncorhynchus kisutch</em> , spring and fall chinook salmon <em>O. tshawytscha</em> , resident and sea-run cutthroat trout <em>O. clarki</em> , winter steelhead trout <em>O. mykiss</em> , and a remnant population of chum salmon <em>O. keta</em> . Coho salmon have been listed as threatened under the Endangered Species Act. Many factors including habitat alterations, harvests, hatchery introductions, and ocean conditions have led to the decline of many Coquille River fish stocks. Habitat changes since European settlement began in the mid- 1800s include logging and log transport, road building, draining and diking for agriculture, and urbanization, which have all contributed to the decline of fish stocks and water quality within the watershed. The recognition of habitat problems as a key limiting factor for fish production and water quality led to the formation of the Coquille Watershed Association (CWA) in early 1994. The formation of the CWA was another step in a 20-year local effort to address habitat problems through restoration of natural processes. The CWA is organized as a nonprofit corporation and is governed by a 26-member executive council representing landowners and stakeholders within the watershed. The goals of the CWA, which arrives at decisions through consensus, include creating water quality conditions that will meet Clean Water Act standards and enhancing native fish survival and production through public and private partnerships. To reach those goals, the CWA has organized a technical advisory group and developed an Action Plan that address limiting factors and sets priorities for identifying, prioritizing, coordinating, accomplishing, and monitoring restoration projects and educational efforts. To date the CWA has generated over US$2.5 million in public and private funding to implement projects including riparian restoration through fencing and planting, wetland development, the addition of large-channel wood and rock, off-channel livestock watering, and over 40 educational tours.

Simulations of water quality and oxythermal cisco habitat in Minnesota lakes under past and future climate scenarios

2012 ◽  
Vol 47 (3-4) ◽  
pp. 375-388 ◽  
Author(s):  
Xing Fang ◽  
Shoeb R. Alam ◽  
Heinz G. Stefan ◽  
Liping Jiang ◽  
Peter C. Jacobson ◽  
...  
Keyword(s):  
Water Quality ◽  
Lake Water ◽  
Fish Habitat ◽  
Future Climate ◽  
Climate Scenarios ◽  
Quality Model ◽  
Lake Water Quality ◽  
Oligotrophic Lakes ◽  
Minnesota Lakes ◽  
Average Standard Error

A deterministic, process-oriented, dynamic and one-dimensional year-round lake water quality model, MINLAKE2010, was developed for water temperature (T) and dissolved oxygen (DO) simulations to study impacts of climate warming on lake water quality and cisco fish habitat. The DO model is able to simulate metalimnetic oxygen maxima in vertical DO profiles of oligotrophic lakes. The model was calibrated with profile data from the 28 study lakes in Minnesota; two-thirds of them are deep mesotrophic/oligotrophic lakes that support cisco, a coldwater fish species. The average standard error of estimate against measured data was 1.47 °C for T and 1.50 mg/L for DO. Oxythermal habitat parameter TDO3 (T at DO = 3 mg/L) was determined from simulated daily T and DO profiles under past and future climate scenarios in the 28 study lakes. Average annual maximum TDO3 (TDO3AM) for the 28 study lakes is projected to increase on the average of 3.2 °C under the MIROC 3.2 future scenario, while the occurrence day of TDO3AM is not much different under past and future climate scenarios. Both physical processes (mixing characteristics related to lake geometry ratio) and trophic status control temperature and DO characteristics and then affect cisco habitat in a lake.

Impacts of Climatic Changes on Water Quality and Fish Habitat in Aquatic Systems

2012 ◽  
pp. 531-569 ◽  
Author(s):  
Xing Fang ◽  
Heinz G. Stefan
Keyword(s):  
Water Quality ◽  
Fish Habitat ◽  
Climatic Changes ◽  
Aquatic Systems

Locally Based Water Quality Planning: Contributions to Fish Habitat Protection

1991 ◽  
Vol 48 (7) ◽  
pp. 1326-1333 ◽  
Author(s):  
Evelyn Pinkerton
Keyword(s):  
Water Quality ◽  
Industrial Development ◽  
Fish Habitat ◽  
Puget Sound ◽  
Essential Elements ◽  
Habitat Protection ◽  
Quality Planning ◽  
Planning Processes ◽  
Local Water ◽  
Local Agencies

Successful fish habitat protection occurs in areas of urban/industrial development when responsible citizens in rural watersheds can produce and implement local water quality plans binding on all agencies. In 1985, legislation in the state of Washington, USA, authorized a central planning agency — the Puget Sound Water Quality Authority — to initiate local watershed planning exercises through counties or other local agencies. The essential elements of community mobilization to the goals and activities of water quality planning were analyzed by comparing key factors in highly successful planning processes with factors in less successful ones. This permitted generalizations about basic organizing principles, educational procedures, and techniques of consensus building in the planning and implementation of water quality rehabilitation and protection for watersheds. The analysis contributed to a general theory of how and why community participation can improve the effectiveness of fish habitat protection.

Characterization and modeling of turbidity density plume induced into stratified reservoir by flood runoffs

2009 ◽  
Vol 59 (1) ◽  
pp. 47-55 ◽  
Author(s):  
S. W. Chung ◽  
H. S. Lee
Keyword(s):  
Water Quality ◽  
Numerical Experiments ◽  
Settling Velocity ◽  
Transport Model ◽  
Fish Habitat ◽  
Monsoon Climate ◽  
First Order ◽  
Attenuation Rate ◽  
Stratified Reservoir ◽  
Organic Particles

In monsoon climate area, turbidity flows typically induced by flood runoffs cause numerous environmental impacts such as impairment of fish habitat and river attraction, and degradation of water supply efficiency. This study was aimed to characterize the physical dynamics of turbidity plume induced into a stratified reservoir using field monitoring and numerical simulations, and to assess the effect of different withdrawal scenarios on the control of downstream water quality. Three different turbidity models (RUN1, RUN2, RUN3) were developed based on a two-dimensional laterally averaged hydrodynamic and transport model, and validated against field data. RUN1 assumed constant settling velocity of suspended sediment, while RUN2 estimated the settling velocity as a function of particle size, density, and water temperature to consider vertical stratification. RUN3 included a lumped first-order turbidity attenuation rate taking into account the effects of particles aggregation and degradable organic particles. RUN3 showed best performance in replicating the observed variations of in-reservoir and release turbidity. Numerical experiments implemented to assess the effectiveness of different withdrawal depths showed that the alterations of withdrawal depth can modify the pathway and flow regimes of the turbidity plume, but its effect on the control of release water quality could be trivial.

scholarly journals An Attempt to Assess the Water Quality in the Dunajec River According to the Requirements for Waters as Fish Habitat.

2013 ◽  
Vol 7 (4) ◽  
pp. 59
Author(s):  
Maciej Michałowski ◽  
Paulina Ciągło ◽  
Aleksandra Wagner
Keyword(s):  
Water Quality ◽  
Fish Habitat

scholarly journals THE ASSESSMENT OF TECK'S CASTLE PROJECT BASED ON FIVE VALUED ECOSYSTEM COMPONENTS

InterConf ◽  
2021 ◽  
pp. 413-421
Author(s):  
Jingyao Su ◽  
Simon Courtenay
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Surface Water ◽  
Fish Habitat ◽  
Surface Water Quality ◽  
Protective Equipment ◽  
Quality Model ◽  
Treatment Facilities ◽  
The Impact

Teck's Castle Project is the largest coal mine project to be mined in Canada. This article is an environmental assessment of Teck's Castle Project based on five valued ecosystem components (VECs) including: Surface Water Quality, Fish and Fish habitat, Vegetation, Local Employment, and Land Use. I proposed to use a surface water quality model to detect the degree of pollution of the water quality of the surrounding rivers and use an economic multiplier to measure the impact on local economic employment. Through research, I found that the water treatment facilities used by Teck Coal Limited can effectively alleviate the impact of the project on the water quality of the surrounding rivers, and I recommended that Teck Coal Limited wear protective equipment to protect their health when working.

Modeling water quality in an oil sands compensation lake

2015 ◽  
Vol 42 (11) ◽  
pp. 901-909 ◽  
Author(s):  
Jianhua Jiang ◽  
Jerry Vandenberg ◽  
Ian Halket ◽  
Kasey Clipperton ◽  
Richard J. Kavanagh ◽  
...  
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Water Temperature ◽  
Oil Sands ◽  
Fish Habitat ◽  
Environmental Modeling ◽  
Water Quality Model ◽  
Quality Data ◽  
Quality Model ◽  
Water Quality Data

Surface mining in the oil sands region of Alberta, Canada, often requires that mining operators drain lakes or divert streams to access the underlying ore. “Compensation lakes” can be constructed to create new fish habitat to offset the loss of fish habitat due to mining activity and to satisfy conditions under a project’s Fisheries Act Authorization. The design of these lakes requires prediction of future water temperature and dissolved oxygen levels to determine the suitability of the new habitat for fish. These predictions are made using a calibrated hydrodynamic and water quality model. Until recently, there were not any built compensation lakes in the region with enough measured water quality data that could be used to calibrate such a model. This paper uses measured data from Horizon Lake, a recently built compensation lake, to calibrate Generalized Environmental Modeling System of Surfacewaters (GEMSS), a three-dimensional hydrodynamic and water quality model, used to model the lake. Horizon Lake was built in 2008 by Canadian Natural Resources Ltd. and water quality in the lake has been monitored for the last seven years. The results of the model calibration to observed water temperature and dissolved oxygen provide rates and coefficients, notably sediment oxygen demand, that can be used to improve model applications to other planned compensation lakes.

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