Environmental & Conservation Sciences Doctoral Work: Recent submissions
Now showing items 21-40 of 42
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Reproductive Timing in a Changing World: Understanding Mechanisms and Costs Associated With Reproductive Timing Decisions
(North Dakota State University, 2018)Organisms in temperate zones time reproduction to occur when conditions are optimal for raising offspring. However, individuals of many taxa vary in precise timing of breeding. The mechanisms underlying the existing variation ... -
Processing Trade-offs in a Cellulosic Biorefinery
(North Dakota State University, 2017)Commercial scale cellulosic biorefineries face significant challenges to produce low-cost fermentable sugar from biomass. Biorefinery processing steps are interrelated and trade-offs between process parameters impact the ... -
Impact of Artificial Aeration on Nutrients in a Small Eutrophic Lake
(North Dakota State University, 2015)The Heinrich- Martin Dam Impoundment (HMDI), located in northcentral LaMoure County, North Dakota, is an important water body for fishing, boating, and other recreational activities. To eliminate the thermal stratification ... -
Influences of Climate Variability and Landscape Modifications on Water Dynamics, Community Structure, and Amphipod Populations in Large Prairie Wetlands: Implications for Waterbird Conservation
(North Dakota State University, 2014)Northern prairie pothole wetlands provide crucial habitat for numerous waterbirds. However, wetland abundance and quality in the Prairie Pothole Region of North America has declined because of agricultural landscape ... -
Ecology of Cryptosporidium Parasites in Wild Rodent Populations
(North Dakota State University, 2015)Cryptosporidium is a genus of ubiquitous parasites that have been detected worldwide in nearly 500 species of amphibians, birds, fish, mammals, and reptiles. Most research has focused on the Cryptosporidium species and ... -
From Bray-Curtis Ordination to Markov Chain Monte Carlo Simulation: Assessing Anthropogenically-Induced andor Climatically-Induced Changes in Arboreal Ecosystems
(North Dakota State University, 2013)Mapping forest resources is useful for identifying threat patterns and monitoring changes associated with landscapes. Remote Sensing and Geographic Information Science techniques are effective tools used to identify and ... -
Biogeochemistry of Wet Ecosystems from Root Zone to Landscape
(North Dakota State University, 2012)The biogeochemistry of wetland ecosystems varies, causing them to act as sources, sinks, filters or transformers of nutrients and pollutants. Wetland plants play important roles in the cycling of elements in wet ecosystems. ... -
Crop Acreage Response Modeling in North Dakota and Greater Midwest
(North Dakota State University, 2017)Our research consists of two papers. First paper focus on the trend of North Dakota (ND) crop acreage changes and include economic factors (expected prices of crops, input price, crop yield, revenue of crops) and climate ... -
Ecological Complexity of Non-Native Species Impacts in Desert Aquatic Systems
(North Dakota State University, 2012)Without an adequate understanding of complex interactions between native and non-native species, management of invasive species can result in unforeseen detrimental impacts. I used both field and laboratory experiments to ... -
Phosphate Removal and Recovery Using Iron Nanoparticles and Iron Cross-Linked Biopolymer
(North Dakota State University, 2012)Nanoscale zero-valent iron (NZVI) particles and iron cross-linked alginate (FCA) beads were successfully used for the first time for phosphate removal and recovery. NZVI was successfully used for phosphate removal and ... -
The Applicability of Physiology for Conservation and Management Purposes: A Case-Study Using the Breeding Season of the Red-winged Blackbird (Agelaius Phoeniceus)
(North Dakota State University, 2017)Physiology has the potential to play a unique and important role in conservation and management practices by helping identify the mechanistic responses of populations to environmental changes, and providing physiological ... -
Quasi-empirical and Spatio-Temporal Vulnerability Modeling of Environmental Risks Posed to a Watershed
(North Dakota State University, 2017)Water quality assessment is crucial in investigating impairment within agricultural watersheds. Seasonal and spatial variations on land can directly affect the adjoining riverine systems. Studies have revealed that ... -
Ammonia Oxidizing Archaea in Engineered Water and Wastewater Systems: Presence, Activity and Relationship to Heavy Metal Inhibition, and Disinfectants
(North Dakota State University, 2017)Ammonia oxidizing archaea (AOA) have been found as a key player in ammonia oxidation. Over the past decade, AOA have been shown in some cases to outnumber ammonia oxidizing bacteria (AOB) in marine, terrestrial and aquatic ... -
Essays on Land Conversion, Crop Acreage Response, and Adoption of Conservation Practices: Evidence from the Dakota's
(North Dakota State University, 2017)This research is composed of three essays. It highlights the driving factors of land conversion and crop acreage response focusing on North Dakota agriculture and estimates the benefits of conservation land measures at ... -
Iron Nanoparticles and Biopolymers for Plant Nutrient Fortification
(North Dakota State University, 2016)Novel iron (Fe) cross-linked alginate (FCA) beads were used for aqueous phosphate removal. Batch experiments were conducted with the beads using three different concentrations of phosphate (5, 50 and 100 mg PO43--P/L) as ... -
Habitat Use and Foraging Ecology of Bats in North Dakota
(North Dakota State University, 2016)Habitat use is a key component to understanding the conservation needs of species. While an array of quantitative analyses for studying fine-scale habitat use and selection have been developed, such methods have rarely ... -
Cell Entrapment for Mitigating Fouling in Membrane Bioreactors Treating Domestic Wastewater
(North Dakota State University, 2018)Membrane bioreactors (MBRs) have been a process of choice for wastewater treatment and reuse because of several advantages over conventional process (activated sludge) including superior quality effluent, less biomass ... -
Impact of Artificial Aeration on Phytoplankton Growth and Seasonal Succession in a Eutrophic Lake
(North Dakota State University, 2016)Excessive phytoplankton growth caused by increased loadings of nitrogen (N) and phosphorus (P) is the most visible symptoms of eutrophication. At higher densities phytoplankton creates water quality problems such as offensive ... -
Seasonality of Some Arctic Alaskan Chironomids
(North Dakota State University, 2016)Arthropods, especially dipteran insects in the family Chironomidae (non-biting midges), are a primary prey resource for many vertebrate species on Alaska’s Arctic Coastal Plain. Midge-producing ponds on the ACP are ... -
Life History and Interspecific Co-Persistence of Native Imperiled Fishes in Single Species and Multi-Species Ex Situ Refuges
(North Dakota State University, 2015)Like many imperiled fishes, the endangered Pahrump Poolfish (Empetrichthys latos latos) is managed in ex situ refuges. I investigated life history characteristics of females from two such populations at Lake Harriet and ...