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Articles 1 - 7 of 7
Full-Text Articles in Fresh Water Studies
Spectroscopic Investigation Of Environmental Pollutants In Water And Air, Mohd Kotaiba Abugazleh
Spectroscopic Investigation Of Environmental Pollutants In Water And Air, Mohd Kotaiba Abugazleh
Student Theses and Dissertations
Intensive industrial activities have contributed to the increased pollution of the environment. The existence of chemical contaminants in the environment is of substantial concern to the soil, air, and aquatic system due to their potential health risks to humans, animals, and plants. In order to reduce environmental pollution, water treatment and carbon capture using adsorption on metal oxides were investigated successfully in this study. Removal of organic compounds hydroquinone and catechol on the surface of TiO2 and Fe2O3 was carried out in aqueous solutions. The resulting treated water was tested for toxicity on freshwater organisms. Promising results were obtained especially …
Tributary Effects On Water Quality And Fish Assemblages In The Strawberry River, Arkansas, Andressa Alves Augusto
Tributary Effects On Water Quality And Fish Assemblages In The Strawberry River, Arkansas, Andressa Alves Augusto
Student Theses and Dissertations
Freshwater is a limited resource, however poor water quality due to human alterations affect our ability to survive and the loss of aquatic biodiversity. The Strawberry River, an Extraordinary Resource and Ecologically Sensitive waterway, is impaired due to sediment, pathogens, and agricultural runoff. To protect the water quality, it is important to determine which tributaries contribute to the impairment. Overall, the tributaries surveyed did not exceed criteria assessment but indicate an increase in turbidity and sediments as the watershed transitions from the Ozark Highlands to the Delta Ecoregion. A fish survey conducted in seven sites of the Strawberry River assessed …
Water Quality And Freshwater Mussel Assemblages In The Strawberry River Watershed, Arkansas, Irene Sanchez Gonzalez
Water Quality And Freshwater Mussel Assemblages In The Strawberry River Watershed, Arkansas, Irene Sanchez Gonzalez
Student Theses and Dissertations
Contamination of freshwater resources is an environmental issue worldwide. Habitat alteration and degradation cause water quality decreases and loss of aquatic biodiversity. The Strawberry River in Northeast Arkansas is an example of a highly diverse watershed presenting water quality impairments due to siltation caused by land use alteration. This thesis provides a better understanding of water quality in the tributaries contributing to the Strawberry River and of the freshwater mussel biodiversity of the river. Overall, the Strawberry River tributaries do not exceed criteria assessment but show increased sediment and nutrient concentrations in more agriculturally intense areas. The diversity of freshwater …
Evaluation Of Cadmium Bioaccumulaiton Of Periphyton And Aquatic Invertebrates Within Tributaries Of The Buffalo National River, Jacob Rollins Mccauley
Evaluation Of Cadmium Bioaccumulaiton Of Periphyton And Aquatic Invertebrates Within Tributaries Of The Buffalo National River, Jacob Rollins Mccauley
Student Theses and Dissertations
The Rush Mining District, located along the Buffalo River in Arkansas, has a significant history of metal-mining operations. The tails and spoils of these operations deposit heavy amounts of raw ore into streams, including the deposition of cadmium, a minor constituent. Periphyton and invertebrate samples from two creeks within the Rush Mining District were measured for cadmium. Additionally, two creeks with no history of mining were sampled. Periphyton samples from mining sites had significantly higher concentrations of cadmium than samples collected at control sites. Invertebrate samples were classified into trophic levels before analysis. Invertebrate samples collected at treatment sites only …
Genetic Structure And Diversity Of Southern Disjunct Populations Of Etheostoma Caeruleum And Chrosomus Erythrogaster, Kyle James Dineen
Genetic Structure And Diversity Of Southern Disjunct Populations Of Etheostoma Caeruleum And Chrosomus Erythrogaster, Kyle James Dineen
Student Theses and Dissertations
Etheostoma caeruleum and Chrosomus erythrogaster are widespread with overlapping distributions that show comparable patterns of naturally disjunct populations on their range margins. Both species have populations on Crowley’s Ridge, AR and the Bluff Hills, MS, relatively recent geological formations. Microsatellite DNA loci were examined for both fish species to evaluate genetic diversity and connectivity among populations on Crowley’s Ridge, the Bluff Hills, and larger core populations. Genetic structuring was found between all populations of both species with lower genetic diversity found in populations of both species on Crowley’s Ridge. Results from this study suggest that both target species colonized these …
Assessing Aquatic System Metabolism Response To Disturbance, Traci Carmen Hudson
Assessing Aquatic System Metabolism Response To Disturbance, Traci Carmen Hudson
Student Theses and Dissertations
Until recently, agricultural drainage ditches and urban stream systems have been underrepresented within aquatic research studies. This underrepresentation has led to gaps in knowledge within the area of ecosystem structure and function, characteristics of agriculture and urban stream stressors, and management strategies for those streams. Many of the factors (increased nutrients, changes to the quantity and composition of organic carbon inputs, light alterations, and sedimentation) that impair water bodies associated with agricultural drainage and urbanization also influence stream processes. Stream organic matter production and consumption measured as ecosystem metabolism, is a fundamental process comprised of gross primary production (GPP) and …
Water Quality Monitoring At Impaired Sites On The Cache River, Ar, Usa, Molly Elaine Kennon-Lacy
Water Quality Monitoring At Impaired Sites On The Cache River, Ar, Usa, Molly Elaine Kennon-Lacy
Student Theses and Dissertations
Cache River Watershed, AR has several impairments, including: dissolved lead (Pb) and copper (Cu), and total dissolved solids (TDS). Eight sites were monitored monthly measuring: pH, conductivity, DO, total suspended solids (TSS), TDS, turbidity, hardness, dissolved and total nutrients and metals (Pb and Cu), to add to ADEQ’s database. Flow was measured to determine if there was a relationship between measured parameters and periods of low or high flow. Filtration size (0.45 vs 0.20 µm) was compared to conclude if using different size filters on water samples affected concentrations of metals in water. Bioassays were performed using aquatic organisms on …