scholarly journals Impact of future climate scenarios on peatland and constructed wetland water quality: A mesocosm experiment within climate chambers

2021 ◽  
Vol 289 ◽  
pp. 112459
Author(s):  
Shokoufeh Salimi ◽  
Miklas Scholz
Keyword(s):  
Water Quality ◽  
Constructed Wetland ◽  
Future Climate ◽  
Mesocosm Experiment ◽  
Climate Scenarios ◽  
Wetland Water ◽  
Wetland Water Quality

scholarly journals Climate change and wetland loss impacts on a Western river's water quality

2014 ◽  
Vol 11 (5) ◽  
pp. 4925-4969
Author(s):  
R. M. Records ◽  
M. Arabi ◽  
S. R. Fassnacht ◽  
W. G. Duffy ◽  
M. Ahmadi ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Water Balance ◽  
General Circulation ◽  
Stream Water ◽  
Wetland Loss ◽  
Future Climate ◽  
Climate Projections ◽  
Climate Scenarios ◽  
Wetland Water

Abstract. An understanding of potential stream water quality conditions under future climate is critical for the sustainability of ecosystems and protection of human health. Changes in wetland water balance under projected climate could alter wetland extent or cause wetland loss. This study assessed the potential climate-induced changes to in-stream sediment and nutrients loads in the historically snow melt-dominated Sprague River, Oregon, Western United States. Additionally, potential water quality impacts of combined changes in wetland water balance and wetland area under future climatic conditions were evaluated. The study utilized the Soil and Water Assessment Tool (SWAT) forced with statistical downscaling of general circulation model (GCM) data from the Coupled Model Intercomparison Project 5 (CMIP5) using the Multivariate Adaptive Constructed Analogs (MACA) method. Our findings suggest that in the Sprague River (1) mid-21st century nutrient and sediment loads could increase significantly during the high flow season under warmer-wetter climate projections, or could change only nominally in a warmer and somewhat drier future; (2) although water quality conditions under some future climate scenarios and no wetland loss may be similar to the past, the combined impact of climate change and wetland losses on nutrient loads could be large; (3) increases in stream total phosphorus (TP) concentration with wetland loss under future climate scenarios would be greatest at high-magnitude, low-probability flows; and (4) loss of riparian wetlands in both headwaters and lowlands could increase outlet TP loads to a similar degree, but this could be due to distinctly different mechanisms in different parts of the watershed.

scholarly journals Climate change and wetland loss impacts on a western river's water quality

2014 ◽  
Vol 18 (11) ◽  
pp. 4509-4527 ◽  
Author(s):  
R. M. Records ◽  
M. Arabi ◽  
S. R. Fassnacht ◽  
W. G. Duffy ◽  
M. Ahmadi ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Water Balance ◽  
Wetland Loss ◽  
Future Climate ◽  
Climate Projections ◽  
Nutrient Loads ◽  
Climate Scenarios ◽  
Riparian Wetland ◽  
Wetland Water

Abstract. An understanding of potential stream water quality conditions under future climate is critical for the sustainability of ecosystems and the protection of human health. Changes in wetland water balance under projected climate could alter wetland extent or cause wetland loss (e.g., via increased evapotranspiration and lower growing season flows leading to reduced riparian wetland inundation) or altered land use patterns. This study assessed the potential climate-induced changes to in-stream sediment and nutrient loads in the snowmelt-dominated Sprague River, Oregon, western US. Additionally, potential water quality impacts of combined changes in wetland water balance and wetland area under future climatic conditions were evaluated. The study utilized the Soil and Water Assessment Tool (SWAT) forced with statistical downscaling of general circulation model (GCM) data from the Coupled Model Intercomparison Project 5 (CMIP5) using the Multivariate Adaptive Constructed Analogs (MACA) method. Our findings suggest that, in the Sprague River, (1) mid-21st century nutrient and sediment loads could increase significantly during the high-flow season under warmer, wetter climate projections or could change only nominally in a warmer and somewhat drier future; (2) although water quality conditions under some future climate scenarios and no wetland loss may be similar to the past, the combined impact of climate change and wetland losses on nutrient loads could be large; (3) increases in stream total phosphorus (TP) concentration with wetland loss under future climate scenarios would be greatest at high-magnitude, low-probability flows; and (4) loss of riparian wetlands in both headwaters and lowlands could increase outlet TP loads to a similar degree, but this could be due to distinctly different mechanisms in different parts of the watershed.

scholarly journals Evaluation of Climate Change on Streamflow, Sediment, and Nutrient Load at Watershed Scale

Climate ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 165
Author(s):  
Prem B. Parajuli ◽  
Avay Risal
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Minimum Temperature ◽  
Future Climate ◽  
Maximum Temperature ◽  
Nutrient Load ◽  
Climate Scenarios ◽  
Monthly Average ◽  
Average Maximum ◽  
Monthly Streamflow

This study evaluated changes in climatic variable impacts on hydrology and water quality in Big Sunflower River Watershed (BSRW), Mississippi. Site-specific future time-series precipitation, temperature, and solar radiation data were generated using a stochastic weather generator LARS-WG model. For the generation of climate scenarios, Representative Concentration Pathways (RCPs), 4.5 and 8.5 of Global Circulation Models (GCMs): Hadley Center Global Environmental Model (HadGEM) and EC-EARTH, for three (2021–2040, 2041–2060 and 2061–2080) future climate periods. Analysis of future climate data based on six ground weather stations located within BSRW showed that the minimum temperature ranged from 11.9 °C to 15.9 °C and the maximum temperature ranged from 23.2 °C to 28.3 °C. Similarly, the average daily rainfall ranged from 3.6 mm to 4.3 mm. Analysis of changes in monthly average maximum/minimum temperature showed that January had the maximum increment and July/August had a minimum increment in monthly average temperature. Similarly, maximum increase in monthly average rainfall was observed during May and maximum decrease was observed during September. The average monthly streamflow, sediment, TN, and TP loads under different climate scenarios varied significantly. The change in average TN and TP loads due to climate change were observed to be very high compared to the change in streamflow and sediment load. The monthly average nutrient load under two different RCP scenarios varied greatly from as low as 63% to as high as 184%, compared to the current monthly nutrient load. The change in hydrology and water quality was mainly attributed to changes in surface temperature, precipitation, and stream flow. This study can be useful in the development and implementation of climate change smart management of agricultural watersheds.

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.

scholarly journals Adapting the Relaxed Tanks-in-Series Model for Stormwater Wetland Water Quality Performance

Water ◽  
2017 ◽  
Vol 9 (9) ◽  
pp. 691 ◽  
Author(s):  
Laura Merriman ◽  
Jon Hathaway ◽  
Michael Burchell ◽  
William Hunt
Keyword(s):  
Water Quality ◽  
Quality Performance ◽  
Wetland Water ◽  
In Series ◽  
Wetland Water Quality
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