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Spatial and Temporal Influences of Water Quality on Zooplankton in Lake Texoma
Seventy-one aquatic species including the copepodids and nauplii were identified from Lake Texoma from August 1996 to September 1997. Zooplankton community structure, abundance and spatial and temporal distributions were compared among five lake zones delineated a priori based on chloride concentration. The zones, in order of decreasing chloride concentration, are the Red River zone (RRZ), Red river Transition zone (RRTZ), Main Lake zone (MLZ), Washita River Transition zone (WRTZ) and Washita River zone (WRZ). Bray Curtis Similarity Index showed community structure was most similar in the two Red River arm zones, the two Washita River arm zones and the MLZ. Zooplankton abundance was greatest in the Red River arm (312 org/L), intermediate in the Washita River arm (217 org/L) and least in the Main Lake body (103 org/L). A significant increase in the abundance of a deformed rotifer, Keratella cochlearis, was observed mainly in the Red River arm during a second study from March 1999 to June 1999. Seasonal dynamics, rather than spatial dynamics, were more important in structuring the zooplankton community, especially in the two river arms. Spatial variance was solely attributed to station and zone effects independent of time for a few crustacean species and many of the …
Date:
May 2000
Creator:
Franks, Jessica L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Report of the Red River Compact Commission: 1993
Report of the Red River Compact Commission describing the approved budgets, audits, and rules and regulations during fiscal year 1993.
Date:
May 1994
Creator:
Red River Compact Commission (U.S.)
Object Type:
Report
System:
The Portal to Texas History
Spatial and Temporal Patterns of Areal and Volumetric Phytoplankton Productivity of Lake Texoma
Phytoplankton productivity of Lake Texoma was measured for one year from August 1999 to August 2000 for four stations, using the oxygen change method and laboratory incubation. Mean values of the photosynthetic parameters, PBmax and alphaB ranged from 4.86 to 46.39 mg O2.mg Chl-1.hr-1 for PBmax and 20.06 to 98.96 mg O2.mg Chl-1.E-1.m2 for alphaB. These values were in the range to be expected for a highly turbid, temperate reservoir. Estimated gross annual areal productivity ranged from 594 g C.m2.yr-1 (P.Q. = 1.2), at a station in the Washita River Zone to 753 g C.m2.yr-1 at a station in the Red River Zone, of the reservoir. Gross annual areal productivity at Station 17, in the Main Lake Zone, was 708 g C.m2.yr-1. Gross areal and volumetric productivity showed distinct seasonal variation with Photosynthetically Available Radiation (PAR) and temperature. Trophic status estimated on a station-by-station basis, using net productivity values derived from gross productivity and respiration estimates, was mesotrophic for all the stations, though one station approached eutrophy. Net productivity values ranged from 0.74 to 0.91 g C. m-2.d-1. An algal bioassay conducted at two stations in August 2000, revealed that phosphorus was most likely the nutrient limiting photosynthesis at both …
Date:
August 2001
Creator:
Baugher, Tessy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Life History of Mayatrichia ponta Ross (Trichoptera: Hydroptilidae) in Honey Creek, Turner Falls Park, Oklahoma
The life history and ontogenetic microhabitat change of Mayatrichia ponta Ross were investigated in Honey Creek, Turner Falls Park, Murray Co., Oklahoma, U.S.A. from August 1994 to August 1995. The shape of larval cases changed from a small cone to a cylinder. M. ponta had an asynchronous multivoltine life history with considerable cohort and generation overlap; five generations were estimated. The development rate was reduced in winter. The winter generations of M. ponta had wider head capsule widths (136-165 μm) than summer generations (121-145 μm). The sex ratio of adults was 1.43 ♂ : 1 ♀. Fecundity ranged from 46 to 150 eggs/female. Fifth instar larvae and pupae aggregated on the bottom side of substrates. Early instars were distributed evenly on all sides of substrates. General patterns of ontogenetic microhabitat shift in aquatic insects are categorized as flow mediated, flow independent, and population interactions and other resources mediated.
Date:
December 1997
Creator:
Wang, Yi-Kuang
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Underwater Optical Properties of Lake Texoma (Oklahoma-Texas) Using Secchi Disk, Submarine Photometer, and High-Resolution Spectroscopy
The underwater optical climate of Lake Texoma was measured at eleven fixed stations from August 1996 to August 1997. Secchi transparency and submarine photometry characterized seasonal and spatial values of secchi depth (SD), vertical attenuation coefficient (η''), and depth of euphotic zone (Zeu). Indices of Zeu:SD and η'' × SD were compared with universally applied values derived from inland and coastal waters. Turbidity explained 76% of the variation (p = 0.0001) of η'' among water quality parameters, including chlorophyll-α. Using a spectroradiometer, spectral signatures of chlorophyll-α and turbidity were located. Stations with low turbidity exhibited a distinct green reflectance peak around 590-610 nanometers, indicating presence of chlorophyll-α. Stations with high turbidity exhibited a reflectance peak shift towards the red spectrum, making it difficult to detect the chlorophyll signature. Derivative analysis of the reflectance signal at 590-610, and 720-780 nanometers allowed discrimination of this chlorophyll signature from those of turbidity (0.66 ≤ r^2 ≤ 0.99).
Date:
August 1998
Creator:
Rolbiecki, David A. (David Alan)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
National Uranium Resource Evaluation: Clinton Quadrangle, Oklahoma
Results of reconnaissance surveys of the Clinton quadrangle to determine the likelihood of uranium deposits of the area, and additional information about the location and classification of any deposits.
Date:
September 1982
Creator:
Bloch, S.; Johnson, K. S.; Eutsler, R. L. & Myers, J. J.
Object Type:
Report
System:
The UNT Digital Library
Emergence, Growth, Drift and Microdistribution of Stoneflies (Plecoptera) in an Ozark Foothills Stream, Delaware County
Adult stonefly emergence, nymphal growth, drift and microdistribution were examined in Battle Branch, a secondorder, spring-fed stream, from November, 1982 to May, 1984. Adults of 22 species emerged successionally, with specific adults present every month. Searching emergent objects and the stream margin was best for collection of winter and early spring emerging species. Sweeping the streamside and light trapping were most efficient for late spring and summer emerging species. Nymphal growth for nine abundant species generally fit double log or semilog models. Drift was low, but did show a post-sunset pulse. Generally, leaf material was found to be significantly related (p<O.001) to density, diversity and biomass of stoneflies in Battle Branch.
Date:
May 1985
Creator:
Ernst, Mark R. (Mark Richard)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
[Woodward Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Woodward quadrangle in Oklahoma.
Date:
1980
Creator:
Geodata International, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
Census and Statistical Characterization of Soil and Water Quality at Abandoned and Other Centralized and Commercial Drilling-Fluid Disposal Sites in Louisiana, New Mexico, Oklahoma, and Texas
Commercial and centralized drilling-fluid disposal (CCDD) sites receive a portion of spent drilling fluids for disposal from oil and gas exploration and production (E&P) operations. Many older and some abandoned sites may have operated under less stringent regulations than are currently enforced. This study provides a census, compilation, and summary of information on active, inactive, and abandoned CCDD sites in Louisiana, New Mexico, Oklahoma, and Texas, intended as a basis for supporting State-funded assessment and remediation of abandoned sites. Closure of abandoned CCDD sites is within the jurisdiction of State regulatory agencies. Sources of data used in this study on abandoned CCDD sites mainly are permit files at State regulatory agencies. Active and inactive sites were included because data on abandoned sites are sparse. Onsite reserve pits at individual wells for disposal of spent drilling fluid are not part of this study. Of 287 CCDD sites in the four States for which we compiled data, 34 had been abandoned whereas 54 were active and 199 were inactive as of January 2002. Most were disposal-pit facilities; five percent were land treatment facilities. A typical disposal-pit facility has fewer than 3 disposal pits or cells, which have a median size of approximately …
Date:
June 1, 2003
Creator:
Dutton, Alan R. & Nance, H. Seay
Object Type:
Report
System:
The UNT Digital Library
Report of the Red River Compact Commission: 1992
Report of the Red River Compact Commission describing goals, activities, and accomplishments during fiscal year 1992.
Date:
May 1993
Creator:
Red River Compact Commission (U.S.)
Object Type:
Report
System:
The Portal to Texas History
[Perryton Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Perryton quadrangle in Texas and Oklahoma.
Date:
May 1980
Creator:
Geodata International, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
The Chickasha Daily Express (Chickasha, Okla.), Vol. 88, No. 64, Ed. 1 Friday, June 13, 1980
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 13, 1980
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Size Fractionation of Metabolically Active Phytoplankton and Bacteria in Two Diverse Lentic Systems
Simultaneous size fractionation of plankton populations associated with NaH^14CO_3 and ^3H-glucose uptake was employed in eutrophic Lake Texoma (Texas and Oklahoma) and oligotrophic Flathead Lake (Montana). Autoradiography was utilized to determine the role of specific microorganisms in community metabolism. Ultraplankton (0.45-10 μm) dominated plankton numbers and metabolic activity in both aquatic systems. Many of the most abundant species were not the most productive, in terms of inorganic C fixation. Rates of heterotrophic uptake of ^3H-glucose were small in comparison to photolithotrophic uptake in both lakes, Photoheterotrophy was more extensive in Flathead Lake, Autoradiographs indicated that bacteria were responsible for observed photoheterotrophy. Oscillatoria sp. exhibited. mixotrophy in Lake Texoma,
Date:
August 1980
Creator:
Ellis, Bonnie K.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Oklahoma City Times (Oklahoma City, Okla.), Vol. 91, No. 47, Ed. 2 Tuesday, April 15, 1980
Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 15, 1980
Creator:
Standard, Jim
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Report of the Red River Compact Commission: 2002
Report of the Red River Compact Commission describing the approved budgets, audits, and rules and regulations during fiscal year 2002.
Date:
June 2003
Creator:
Red River Compact Commission (U.S.)
Object Type:
Report
System:
The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Sunday, September 10, 2006
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 10, 2006
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma City Times (Oklahoma City, Okla.), Vol. 90, No. 289, Ed. 2 Wednesday, January 23, 1980
Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 23, 1980
Creator:
Standard, Jim
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Uranium in the Southern United States
From introduction: In this study on raw material sources of uranium the Southern Interstate Nuclear Board has catalogued all known occurrences of uranium and some references to thorium in a 17-state area (P1. 1). These occurrences have been evaluated as potential sources of uranium by the State Geological Surveys and the consultant group of SINB. Favorability guides have been applied to the known occurrences and recommendations have been made for future action by the states involved, federal agencies, or by industry. State recommendations are included in state-by-state summaries. The state reports were written either by personnel of the State Geological Surveys or were abstracted from State geological survey data by members of the consultant group...The purpose of this study was to compile information on and systematically assess uranium and other radioactive occurrences in the region. The SINB undertook the project because of its statutory, interstate capability as an extension of government in each of the 17 states, an arrangement that lends itself effectively to this cooperative undertaking.
Date:
November 1970
Creator:
Southern Interstate Nuclear Board
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 69, No. 78, Ed. 1 Monday, December 13, 1982
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 13, 1982
Creator:
Lake, Charles S.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Report of the Red River Compact Commission: 2000
Report of the Red River Compact Commission describing goals, activities, and accomplishments during fiscal year 2000.
Date:
September 2001
Creator:
Red River Compact Commission (U.S.)
Object Type:
Report
System:
The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Saturday, September 8, 2012
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 8, 2012
Creator:
Bright, James
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Investigation of Melrose Zinc-Lead District, Ottawa County, Oklahoma, and Cherokee County, Kansas
Report issued by the Bureau of Mines over studies conducted on the Melrose zinc-lead deposits. Methods used in the investigation are listed. The characteristics of the zinc-lead deposits are presented also. This report includes tables, maps, and illustrations.
Date:
September 1948
Creator:
Knox, Clinton C.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 60, No. 18, Ed. 1 Thursday, January 21, 1982
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 21, 1982
Creator:
Gilmore, Robert K. & Hale, Dave
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Sunday, September 14, 2008
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 14, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History