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Effect Of Water Column Ph On Sediment Phosphorus Release Rates In Upper Klamath Lake Oregon 2001
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Book Synopsis Effect of Water-column PH on Sediment-phosphorus Release Rates in Upper Klamath Lake, Oregon, 2001 by : Lawrence H. Fisher
Download or read book Effect of Water-column PH on Sediment-phosphorus Release Rates in Upper Klamath Lake, Oregon, 2001 written by Lawrence H. Fisher and published by . This book was released on 2004 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of water-column pH on sediment-phosphorus release rates in Upper Klamath Lake, Oregon, 2001 by :
Download or read book Effect of water-column pH on sediment-phosphorus release rates in Upper Klamath Lake, Oregon, 2001 written by and published by DIANE Publishing. This book was released on with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Water-column PH on Sediment-phosphorus Release Rates in Upper Klamath Lake, Oregon, 2001 by : Lawrence H. Fisher
Download or read book Effect of Water-column PH on Sediment-phosphorus Release Rates in Upper Klamath Lake, Oregon, 2001 written by Lawrence H. Fisher and published by . This book was released on 2004 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water-resources Investigations Report by : James Bruce Moring
Download or read book Water-resources Investigations Report written by James Bruce Moring and published by . This book was released on 2003 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water-resources Investigations Report by :
Download or read book Water-resources Investigations Report written by and published by . This book was released on 2003 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2004 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus Release from Lake Sediments by : Raymond E. Wildung
Download or read book Phosphorus Release from Lake Sediments written by Raymond E. Wildung and published by . This book was released on 1973 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Biological Assessment written by and published by . This book was released on 2002 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Timing and Duration of Flooding on Phosphorus Release in Four Restored Wetlands Around Agency and Upper Klamath Lakes, Oregon by : Carla J. Stevens
Download or read book Effects of Timing and Duration of Flooding on Phosphorus Release in Four Restored Wetlands Around Agency and Upper Klamath Lakes, Oregon written by Carla J. Stevens and published by . This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upper Klamath Lake (UKL) and Agency Lake in south-central Oregon are hypereutrophic due to phosphorus (P) loading from both geologic and agricultural sources in the watershed. Restoring historic lake-fringe wetlands to provide P sinks around the lakes has been accepted as a favorable means of reducing lake P levels and loading. Hydrologic management strategies differ in their timing of wetland filling and draining, and they may have significantly different outcomes on P forms and concentrations released to the lakes. To evaluate the effects of hydrologic management on P loading to the lakes, we investigated the biotic and abiotic mechanisms of P release related to timing and duration of inundation of wetland soils from four restoration sites through a laboratory and field study. More specifically, we evaluated four hypotheses related to hydrologic management and P release in the restored wetlands: 1) timing (temperature) of inundation affects the concentrations and forms of P released in study wetlands, 2) the nature of P dynamics in the study wetlands releases primarily soluble reactive phosphorus (SRP), as opposed to organic P, 3) abiotic factors including dissolved oxygen, pH, redox, organic matter, and bulk density levels influence P release, and 4) soil P fractions change over time with different flooding regimes. These hypotheses were investigated in a lab experiment in which dry wetland soil cores were flooded for 56 days and included sampling of total phosphorus (TP), SRP, dissolved oxygen (DO), pH, redox, and CO2. Measurements were also taken on soil cores when dry, flooded for one day, after experiment flooding, and after flooding in the field for soil pH, organic matter, bulk density, total P, microbial P, and inorganic P fractions. Higher release rates of TP were found in summer temperature treatments in all wetlands while release of SRP varied more with temperature and abiotic factors. Low DO and redox levels also influenced greater release of P from soil cores. Soil solution pH upon flooding resulted in dissolution of inorganic P fractions, leading to release of SRP to the water column. After dissolution, wetlands with mineral soils had greater capacities of adsorbing SRP into P fractions than the wetlands with organic soils. Microbial P was also a factor in SRP release; saturated biological demand resulted in higher mineralization than immobilization rates in two wetlands. Our data indicate that wetlands with hydrologic connectivity to the lakes and mineral soils released the lowest concentrations of TP, while SRP was variable. Further, our data provide evidence for determining best management strategies for wetlands to lower P loading to the lakes, which should be based upon soil type, how inorganic P is held in soil fractions, microbial activity, and the effect of abiotic factors such as temperature, DO, redox, and pH.
Book Synopsis Effect of Water Column PH and NO3 on Ortho-phosphate Release Rates from Freshwater Sediments by : Beverly Eloise Baker
Download or read book Effect of Water Column PH and NO3 on Ortho-phosphate Release Rates from Freshwater Sediments written by Beverly Eloise Baker and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological/conference Opinion Regarding the Effects of Operation of the Bureau of Reclamation's Klamath Project on the Endangered Lost River Sucker (Deltistes Luxatus), Endangered Shortnose Sucker (Chasmistes Brevirostris), Threatened Bald Eagle (Haliaeetus Leucocephalus) and Proposed Critical Habitat for the Lost River/shortnose Suckers by :
Download or read book Biological/conference Opinion Regarding the Effects of Operation of the Bureau of Reclamation's Klamath Project on the Endangered Lost River Sucker (Deltistes Luxatus), Endangered Shortnose Sucker (Chasmistes Brevirostris), Threatened Bald Eagle (Haliaeetus Leucocephalus) and Proposed Critical Habitat for the Lost River/shortnose Suckers written by and published by . This book was released on 2001 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus Release from Lake Winnebago Sediments by : James H. Wiersma
Download or read book Phosphorus Release from Lake Winnebago Sediments written by James H. Wiersma and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Phosphorus Release Rates as a Function of Redox and PH for Lake Tomah, Wisconsin by : Rachel E. Feck
Download or read book Sediment Phosphorus Release Rates as a Function of Redox and PH for Lake Tomah, Wisconsin written by Rachel E. Feck and published by . This book was released on 2015 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Tomah, Wisconsin, is a shallow eutrophic system with excessive summer cyanobacterial blooms and poor water quality. Intact sediment cores were collected to measure sediment P release rates as a function of redox and pH under laboratory conditions, as well as examine ve rtical variations in sediment mobile P fractions. Anaerobic conditions led to a mean release rate of 15.52 mg/m 2 d (± 0.84, standard error, SE), which was approximately 9 and 6 times greater than aerobic conditions when bubbled with ambient air containing CO 2 (mean pH= 8.25, mean rate= 1.67 mg/m 2 d, ± 0.11 SE ) or CO 2 -free air (mean pH= 8.88, mean rate= 2.49 mg/m 2 d, ± 0.34 SE), respectively. The greater P release rate at an elevated pH suggested the potential for enhanced P release from aerobic sediment by ligand exchange. The elevated surface concentrations of total and biologically-labile P overlaying lower, constant concentrations at deeper depths, represented potentially mobile P linked to internal loading. Internal P loading under aerobic conditions at high pH potentially accounted for 27%, while tributary loading represented 73 % of the measured P input to Lake Tomah (2011 -2012 ). Thus, P release from sediment played a potentially important role in summer P budget of the lake.
Book Synopsis Precipitation and Inactivation of Phosphorus as a Lake Restoration Technique by : George Dennis Cooke
Download or read book Precipitation and Inactivation of Phosphorus as a Lake Restoration Technique written by George Dennis Cooke and published by . This book was released on 1981 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Sediment Interstitial Phosphorus and Phosphorus Release from Intact Sediment Cores by : George Christian Holdren
Download or read book Measurement of Sediment Interstitial Phosphorus and Phosphorus Release from Intact Sediment Cores written by George Christian Holdren and published by . This book was released on 1974 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Temperature on Phosphorus Release from Anoxic Western Lake Erie Sediments by : Kenneth J. Gibbons
Download or read book Effect of Temperature on Phosphorus Release from Anoxic Western Lake Erie Sediments written by Kenneth J. Gibbons and published by . This book was released on 2015 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Laurentian Great Lakes contain approximately 2% of the world's freshwater and provide drinking water for more than 30 million people. Lake Erie is the shallowest and smallest of the Great Lakes. The western basin is the shallowest portion of Lake Erie and receives a majority of its water from the Maumee River and Detroit River. The Maumee River Watershed is the largest watershed in the Great Lakes and land use in the watershed dominated by urban and agricultural areas. Farm field run-off and combined sewer overflows from urban and agricultural areas contribute high concentrations of nutrients to the Maumee River. The high nutrient water flowing out of the Maumee River into the Western Basin of Lake Erie creates a good environment for Harmful Algal Blooms (HABs), which are primarily composed of Microcystis, to rapidly grow. HABs are a serious issue for Lake Erie because Microcystis produces a toxin that is harmful to humans. Research focused on decreasing HABs has identified phosphorus as the limiting nutrient. Phosphorus enters the lake through either external (phosphorus entering from outside the lake i.e. farm field run-off or inputs from tributaries) or internal loading (release of phosphorus from lake sediments). For Western Lake Erie, there are numerous studies on external loading of phosphorus, however there is considerably less research on internal phosphorus loading. Estimating internal loading of phosphorus is important because phosphorus concentrations in lake sediments can be orders of magnitude higher than phosphorus concentrations in lake water and can be a significant source of phosphorus. Phosphorus release rates from lake sediments can be affected by a variety of environmental factors such as pH, temperature, and dissolved oxygen concentration. If lake sediments become warmer and more hypoxic in response to climate change, the contribution of phosphorus from lake sediments may increase. The research conducted in this thesis investigates the effect of temperature on the release of phosphorus from anoxic lake sediments. This study aims to estimate phosphorus release rates for a range of temperatures under anoxic conditions for Western Lake Erie and to improve estimates of internal phosphorus loading. Sediment cores collected during the summer of 2014 and 2015 were incubated at 10°C, 20°C, 22°C, 27°C, and 30°C under anoxic conditions. Results from the sediment core incubations indicate that temperature, location, and duration of anoxia are significant influences on phosphorus release. Extrapolating the phosphorus release rates for the entire western basin, four days of anoxia at 30°C for the entire basin could result in the release of ~240 metric tons of phosphorus.
Book Synopsis Phosphorus Release from Lake Sediments by : Raymond E. Wildung
Download or read book Phosphorus Release from Lake Sediments written by Raymond E. Wildung and published by . This book was released on 1973 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
