Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (1560)
- University of Colorado Law School (1207)
- Utah State University (755)
- University of Arkansas, Fayetteville (534)
- City University of New York (CUNY) (515)
-
- Department of Primary Industries and Regional Development, Western Australia (412)
- University of Kentucky (270)
- University of Nevada, Las Vegas (242)
- William & Mary (242)
- Portland State University (209)
- Selected Works (128)
- University of South Florida (91)
- Florida International University (88)
- University of New Mexico (81)
- Nova Southeastern University (74)
- Bridgewater State University (72)
- Air Force Institute of Technology (69)
- University of Windsor (65)
- SIT Graduate Institute/SIT Study Abroad (63)
- The University of Maine (58)
- William & Mary Law School (56)
- Texas A&M University-San Antonio (51)
- University of Southern Maine (51)
- Purdue University (47)
- Old Dominion University (46)
- Colby College (42)
- University of Massachusetts Boston (42)
- Edith Cowan University (39)
- University of Central Florida (39)
- United Arab Emirates University (38)
- Keyword
-
- Water quality (508)
- 2014 International Conference on Hydroinformatics HIC (465)
- Groundwater (333)
- United States (289)
- Western Australia (273)
-
- Colorado (257)
- Water (241)
- Climate change (191)
- California (181)
- Drought (180)
- Salinity (170)
- West (163)
- Agriculture (157)
- Hydrology (156)
- Irrigation (156)
- Water supply (153)
- Natural resources (150)
- GIS (148)
- Virginia (143)
- New Mexico (135)
- Utah (130)
- Research and Technical Reports (126)
- Wyoming (125)
- Conservation (121)
- Arizona (118)
- Management (117)
- Water management (111)
- Water rights (109)
- Arkansas (103)
- Land use (103)
- Publication Year
- Publication
-
- Reports (722)
- International Conference on Hydroinformatics (464)
- Technical Reports (363)
- Water Current Newsletter (291)
- United States Agricultural Commodities in Drought Archive (219)
-
- Resource management technical reports (217)
- KWRRI Research Reports (202)
- School of Natural Resources: Dissertations, Theses, and Student Research (197)
- Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications (161)
- Drought Mitigation Center: Faculty Publications (136)
- Books, Reports, and Studies (113)
- Daugherty Water for Food Global Institute: Faculty Publications (109)
- Electronic Theses and Dissertations (104)
- Journal of the Department of Agriculture, Western Australia, Series 4 (103)
- Theses and Dissertations (102)
- Graduate Theses and Dissertations (90)
- Publications (WR) (76)
- Allocating and Managing Water for a Sustainable Future: Lessons from Around the World (Summer Conference, June 11-14) (74)
- USF Tampa Graduate Theses and Dissertations (73)
- Nebraska Water Center: Faculty Publications (70)
- The OTEC Liaison (70)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (70)
- SERC Research Reports (66)
- United States Geological Survey: Water Reports and Publications (66)
- Focus on International Joint Commission Activities (64)
- High Plains Regional Climate Center: Personnel Publications (64)
- Dissertations and Theses (63)
- Independent Study Project (ISP) Collection (56)
- Droughtscape, Quarterly Newsletter of NDMC, 2007- (54)
- Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002) (53)
- Publication Type
Articles 841 - 870 of 8291
Full-Text Articles in Physical Sciences and Mathematics
The Relationships Between Benthic Macroinvertebrate And Local Water Quality And Physical Habitat Characteristics In The Rio Chama, New Mexico, Monika Hobbs
Water Resources Professional Project Reports
Incorporating the process of adaptive management in rivers management can assist with mitigating impacts of altered streamflow and prevent loss of aquatic biodiversity. Streamflow regimes are important drivers of stream ecology and structuring adaptive management around benthic macroinvertebrates could be an efficient means to understand ecological responses to management of streamflow regime. Over the past decade, there has been interest in implementing adaptive management practices to managing stream flow in the Rio Chama below El Vado Dam in northern New Mexico. The goal of this research project is to improve understanding of environmental drivers shape the benthic macroinvertebrate communities in …
Calibrating Human Attention As Indicator: Monitoring #Drought In The Twittersphere, Kelly Smith, Andrew Tyre, Zhenghong Tang, Michael Hayes, Adnan Akyuz
Calibrating Human Attention As Indicator: Monitoring #Drought In The Twittersphere, Kelly Smith, Andrew Tyre, Zhenghong Tang, Michael Hayes, Adnan Akyuz
Drought Mitigation Center: Faculty Publications
State climatologists and other expert drought observers have speculated about the value of monitoring Twitter for #drought and related hashtags. This study statistically examines the relationships between the rate of tweeting using #drought and related hashtags, within states, accounting for drought status and news coverage of drought. We collected and geolocated tweets, 2017–18, and used regression analysis and a diversity statistic to explain expected and identify unexpected volumes of tweets. This provides a quantifiable means to detect state-weeks with a volume of tweets that exceeds the upper limit of the prediction interval. To filter out instances where a high volume …
Assessing The Impact Of A New Inlet Created By 2012 Hurricane Sandy On The Intensity Of Algae Blooms In Bellport Bay Ny, Ryan A. Wagner
Assessing The Impact Of A New Inlet Created By 2012 Hurricane Sandy On The Intensity Of Algae Blooms In Bellport Bay Ny, Ryan A. Wagner
Student Publications
Harmful algae blooms (HABs) are a growing ecosystem health issue in environments worldwide, driven by excess nitrogen runoff (Eutrophication) alongside high summer temperatures. HABs strip oxygen from the environment and create toxic environments that impact other primary producers, fish, birds, mammals, reptiles, and any other organisms that enter an affected body of water. The purpose of this study is to analyze the impact of a new inlet, created by Hurricane Sandy in Long Island’s Bellport Bay, on the concentration of algae blooms during peak blooming periods (Jul-Aug) to inform ecosystem-based management. Google Earth Engine Code Editor and 2008-2017 Landsat 5-8 …
A Seasonal Study Of Ecoroof Metal And Nutrient Dynamics And Associated Drivers In An Ecoroof On A Commercial Building In North Portland Oregon, Alex Vijay Bans
A Seasonal Study Of Ecoroof Metal And Nutrient Dynamics And Associated Drivers In An Ecoroof On A Commercial Building In North Portland Oregon, Alex Vijay Bans
Dissertations and Theses
Green stormwater infrastructure (GSI), specifically ecoroofs, is increasingly seen as an effective stormwater management tool in urban planning strategies. However, the literature suggests that ecoroofs can be sources of certain metals and nutrients. The goal of our study was to address two research questions: 1) How does ecoroof runoff compare to conventional roof runoff chemically: do ecoroofs retain certain chemicals and leach others? and 2) what are the roof characteristics and environmental variables that affect runoff quality? For 10 months, runoff events from an ecoroof were compared to those of a conventional roof; water samples were collected with autosamplers, and …
Occupancy And Abundance Of Stream Salamanders Along A Specific Conductance Gradient, Jacob M. Hutton, Steven J. Price, Simon J. Bonner, Stephen C. Richter, Christopher D. Barton
Occupancy And Abundance Of Stream Salamanders Along A Specific Conductance Gradient, Jacob M. Hutton, Steven J. Price, Simon J. Bonner, Stephen C. Richter, Christopher D. Barton
Forestry and Natural Resources Faculty Publications
In the Central Appalachians (USA), mountaintop-removal mining accompanied by valley fills often leads to streams with elevated specific conductivity (SC). Thus, the ionic composition of freshwaters in this region is hypothesized to be a driver of the distribution and abundance of freshwater taxa, including stream salamanders. We examined the association between SC and stream salamander populations by conducting salamander counts in 30 southeastern Kentucky streams across a continuous gradient of SC that ranged from 30 to 1966 μS/cm. We counted 2319 salamanders across 5 species and, using a hierarchical Bayesian version of the N-mixture model, found a negative association between …
Assessment Of Switchgrass-Based Bioenergy Supply Using Gis-Based Fuzzy Logic And Network Optimization In Missouri (U.S.A.), Gia Nguyen, Erik Lyttek, Pankaj Lal, Taylor Wieczerak, Pralhad Burli
Assessment Of Switchgrass-Based Bioenergy Supply Using Gis-Based Fuzzy Logic And Network Optimization In Missouri (U.S.A.), Gia Nguyen, Erik Lyttek, Pankaj Lal, Taylor Wieczerak, Pralhad Burli
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Bioenergy has been globally recognized as one of the sustainable alternatives to fossil fuels. An assured supply of biomass feedstocks is a crucial bottleneck for the bioenergy industry emanating from uncertainties in land-use changes and future prices. Analytical approaches deriving from geographical information systems (GIS)-based analysis, mathematical modeling, optimization analyses, and empirical techniques have been widely used to evaluate the potential for bioenergy feedstock. In this study, we propose a three-phase methodology integrating fuzzy logic, network optimization, and ecosystem services assessment to estimate potential bioenergy supply. The fuzzy logic analysis uses multiple spatial criteria to identify suitable biomass cultivating regions. …
Mapping Geographical Inequalities In Access To Drinking Water And Sanitation Facilities In Low-Income And Middle-Income Countries, 2000–17, Aniruddha Deshpande, Robert C. Reiner Jr, Veincent Christian F. Pepito, Arianna Maever L. Amit, Local Burden Of Disease Wash Collaborators, 665 Co-Authors
Mapping Geographical Inequalities In Access To Drinking Water And Sanitation Facilities In Low-Income And Middle-Income Countries, 2000–17, Aniruddha Deshpande, Robert C. Reiner Jr, Veincent Christian F. Pepito, Arianna Maever L. Amit, Local Burden Of Disease Wash Collaborators, 665 Co-Authors
Ateneo School of Medicine and Public Health Publications
Background
Universal access to safe drinking water and sanitation facilities is an essential human right, recognised in the Sustainable Development Goals as crucial for preventing disease and improving human wellbeing. Comprehensive, high-resolution estimates are important to inform progress towards achieving this goal. We aimed to produce high-resolution geospatial estimates of access to drinking water and sanitation facilities.
Methods
We used a Bayesian geostatistical model and data from 600 sources across more than 88 low-income and middle-income countries (LMICs) to estimate access to drinking water and sanitation facilities on continuous continent-wide surfaces from 2000 to 2017, and aggregated results to policy-relevant …
Using Cold War-Era Satellite Imagery To Inform Historic Land Cover Classification, Nicholas Hamp-Adams
Using Cold War-Era Satellite Imagery To Inform Historic Land Cover Classification, Nicholas Hamp-Adams
The Journal of Purdue Undergraduate Research
No abstract provided.
Determining How Increasing Precipitation Intensity Will Impact Rangelands In Utah., Karen H. Beard, Andrew Kulmatiski
Determining How Increasing Precipitation Intensity Will Impact Rangelands In Utah., Karen H. Beard, Andrew Kulmatiski
Browse all Datasets
As the atmosphere warms, precipitation events become larger, but less frequent. Yet, there is fundamental disagreement about how increased precipitation intensity will affect vegetation. Walter’s two-layer hypothesis and experiments testing it have demonstrated that precipitation intensity can increase woody plant growth. Observational studies have found the opposite pattern. Not only are the patterns contradictory, but inference is largely limited to grasslands and savannas. We tested the effects of increased precipitation intensity in a shrub-steppe ecosystem that receives >30% of its precipitation as snow. We used 11 (8 m x 8 m) shelters to collect and redeposit rain and snow as …
Decision Agriculture, Abdul Salam, Usman Raza
Decision Agriculture, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, the latest developments in the field of decision agriculture are discussed. The practice of management zones in digital agriculture is described for efficient and smart faming. Accordingly, the methodology for delineating management zones is presented. Modeling of decision support systems is explained along with discussion of the issues and challenges in this area. Moreover, the precision agriculture technology is also considered. Moreover, the chapter surveys the state of the decision agriculture technologies in the countries such as Bulgaria, Denmark, France, Israel, Malaysia, Pakistan, United Kingdom, Ukraine, and Sweden. Finally, different field factors such as GPS accuracy and …
Electromagnetic Characteristics Of The Soil, Abdul Salam, Usman Raza
Electromagnetic Characteristics Of The Soil, Abdul Salam, Usman Raza
Faculty Publications
The electromagnetic characteristics of the soil are discussed in this chapter. The characteristics of porous bedrock, soil medium, and impacts of rain attenuations are also presented. The models of dielectric soil properties are studied with a rigorous focus on the constitutive parameters of subsurface soil medium. Moreover, the permittivity and wavenumber in soil are explained. In addition, the frequency-dependent dielectric properties such as dispersion in soil, absorption characteristic, and penetration depth versus frequency are reviewed. Furthermore, the effective permittivity of soil–water mixture for through-the soil-propagation mechanism is analyzed thoroughly.
Underground Phased Arrays And Beamforming Applications, Abdul Salam, Usman Raza
Underground Phased Arrays And Beamforming Applications, Abdul Salam, Usman Raza
Faculty Publications
This chapter presents a framework for adaptive beamforming in underground communication. The wireless propagation is thoroughly analyzed to develop a model using the soil moisture as an input parameter to provide feedback mechanism while enhancing the system performance. The working of array element in the soil is analyzed. Moreover, the effect of soil texture and soil moisture on the resonant frequency and return loss is studied in detail. The wave refraction from the soil–air interface highly degrades the performance of the system. Furthermore, to beam steering is done to achieve high gain for lateral component improving the UG communication. The …
Signals In The Soil: An Introduction To Wireless Underground Communications, Abdul Salam, Usman Raza
Signals In The Soil: An Introduction To Wireless Underground Communications, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, wireless underground (UG) communications are introduced. A detailed overview of WUC is given. A comprehensive review of research challenges in WUC is presented. The evolution of underground wireless is also discussed. Moreover, different component of UG communications is wireless. The WUC system architecture is explained with a detailed discussion of the anatomy of an underground mote. The examples of UG wireless communication systems are explored. Furthermore, the differences of UG wireless and over-the-air wireless are debated. Different types of wireless underground channel (e.g., In-Soil, Soil-to-Air, and Air-to-Soil) are reported as well.
Modulation Schemes And Connectivity In Wireless Underground Channel, Abdul Salam, Usman Raza
Modulation Schemes And Connectivity In Wireless Underground Channel, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, a thorough treatment of the modulation schemes for UG Wireless is presented. The effects of soil texture and water content on the capacity of multi-carrier modulation in WUC are discussed. The multi-carrier capacity model results are analyzed. Moreover, the underground MIMO design for underground communications is explained thoroughly. An analysis of medium access in wireless underground is done as well. Furthermore, the soil properties are considered for cross-layer communications of UG wireless. The performance analysis of traditional modulation schemes is also considered. The soil moisture-based modulation approach is also explored in this chapter. The connectivity and diversity …
Underground Wireless Channel Bandwidth And Capacity, Abdul Salam, Usman Raza
Underground Wireless Channel Bandwidth And Capacity, Abdul Salam, Usman Raza
Faculty Publications
The UG channel bandwidth and capacity are vital parameters in wireless underground communication system design. In this chapter, a comprehensive analysis of the wireless underground channel capacity is presented. The impact of soil on return loss, bandwidth, and path loss is discussed. The results of underground multi-carrier modulation capacity are also outlined. Moreover, the single user capacity and multi-carrier capacity are also introduced with an in-depth treatment of soil texture, soil moisture, and distance effects on channel capacity. Finally, the chapter is concluded with a discussion of challenges and open research issues.
Signals In The Soil: Underground Antennas, Abdul Salam, Usman Raza
Signals In The Soil: Underground Antennas, Abdul Salam, Usman Raza
Faculty Publications
Antenna is a major design component of Internet of Underground Things (IOUT) communication system. The use of antenna, in IOUT, differs from traditional communication in that it is buried in the soil. Therefore, one of the main challenges, in IOUT applications, is to establish a reliable communication. To that end, there is a need of designing an underground-specific antenna. Three major factors that can impact the performance of a buried antenna are: (1) effect of high soil permittivity changes the wavelength of EM waves, (2) variations in soil moisture with time affecting the permittivity of the soil, and (3) difference …
Soil Moisture And Permittivity Estimation, Abdul Salam, Usman Raza
Soil Moisture And Permittivity Estimation, Abdul Salam, Usman Raza
Faculty Publications
The soil moisture and permittivity estimation is vital for the success of the variable rate approaches in the field of the decision agriculture. In this chapter, the development of a novel permittivity estimation and soil moisture sensing approach is presented. The empirical setup and experimental methodology for the power delay measurements used in model are introduced. Moreover, the performance analysis is explained that includes the model validation and error analysis. The transfer functions are reported as well for soil moisture and permittivity estimation. Furthermore, the potential applications of the developed approach in different disciplines are also examined.
Current Advances In Internet Of Underground Things, Abdul Salam, Usman Raza
Current Advances In Internet Of Underground Things, Abdul Salam, Usman Raza
Faculty Publications
The latest developments in Internet of Underground Things are covered in this chapter. First, the IOUT Architecture is discussed followed by the explanation of the challenges being faced in this paradigm. Moreover, a comprehensive coverage of the different IOUT components is presented that includes communications, sensing, and system integration with the cloud. An in-depth coverage of the applications of the IOUT in various disciplines is also surveyed. These applications include areas such as decision agriculture, pipeline monitoring, border control, and oil wells.
Signals In The Soil: Subsurface Sensing, Abdul Salam, Usman Raza
Signals In The Soil: Subsurface Sensing, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, novel subsurface soil sensing approaches are presented for monitoring and real-time decision support system applications. The methods, materials, and operational feasibility aspects of soil sensors are explored. The soil sensing techniques covered in this chapter include aerial sensing, in-situ, proximal sensing, and remote sensing. The underlying mechanism used for sensing is also examined as well. The sensor selection and calibration techniques are described in detail. The chapter concludes with discussion of soil sensing challenges.
Autonomous Irrigation Management In Decision Agriculture, Abdul Salam, Usman Raza
Autonomous Irrigation Management In Decision Agriculture, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, the important application of autonomous irrigation management in the field decision agriculture is discussed. The different types of sensor-guided irrigation systems are presented that includes center pivot systems and drip irrigation systems. Their sensing and actuator components are with detailed focus on real-time decision-making and integration to the cloud. This chapter also presents irrigation control systems which takes, as an input, soil moisture and temperature from IOUT and weather data from Internet and communicate with center pivot based irrigation systems. Moreover, the system architecture is explored where development of the nodes including sensing and actuators is presented. …
Variable Rate Applications In Decision Agriculture, Abdul Salam, Usman Raza
Variable Rate Applications In Decision Agriculture, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, the variable rate applications (VRA) are presented for the field of decision agriculture. The characteristics of VRA control systems are described along with control hardware. Different types of VRA systems are discussed (e.g., liquid VRA systems and dry VRA systems). A case study is also explored in this regard. Moreover, recent advances and future trends are also outlined. Accordingly, a sustainable variable-rate irrigation scheduling is studied where different hardware and software component of the cyber-physical system are considered. Finally, chapter is concluded with a novel sensor deployment methodology.
Wireless Underground Channel Modeling, Abdul Salam, Usman Raza
Wireless Underground Channel Modeling, Abdul Salam, Usman Raza
Faculty Publications
A comprehensive treatment of wireless underground channel modeling is presented in this chapter. The impacts of the soil on bandwidth and path loss are analyzed. A mechanism for the UG channel sounding and multipath characteristics analysis is discussed. Moreover, novel time-domain impulse response model for WUC is reviewed with the explanation of model parameters and statistics. Furthermore, different types of the through-the-soil wireless communications are surveyed. Finally, the chapter concludes with discussion of the UG wireless statistical model and path loss model for through-the-soil wireless communications in decision agriculture. The model presented in this chapter is also validated with empirical …
Development And Performance Assessment Of An Integrated Vermifiltration Based Treatment System For The Treatment Of Feedlot Runoff, Rajneesh Singh, Matteo D'Alessio, Yulie Meneses, Shannon L. Bartelt-Hunt, Brian Woodbury, Chittaranjan Ray
Development And Performance Assessment Of An Integrated Vermifiltration Based Treatment System For The Treatment Of Feedlot Runoff, Rajneesh Singh, Matteo D'Alessio, Yulie Meneses, Shannon L. Bartelt-Hunt, Brian Woodbury, Chittaranjan Ray
Nebraska Water Center: Faculty Publications
The objective of this study was to treat feedlot runoff by developing an ecologically sustainable, affordable, and resilient treatment system having a relatively long life span. Three horizontal flow soil biofilters were utilized in this study: 1) without earthworms and plants (Biofilter (BF)), 2) with earthworms only (Vermifilter (VF)), and 3) with earthworms and plants (Macrophyte Assisted Vermifilter (MAVF)). The experiments were conducted with a hydraulic retention time of four days using Lumbricus terestrris earthworms and Carex frankii wetland plants. The average COD removal from the BF, VF, and MAVF were 23.2–30.4%, 61.4–69.1%, and 68.3–78.1%, respectively. Average TN removal efficiencies …
The Influence Of Surface Types Towards Run-Off Water In Urban Park, Febby Andini
The Influence Of Surface Types Towards Run-Off Water In Urban Park, Febby Andini
International Programs
Pavements in Alun Kapuas Park constribute 63 of run off water over the capacity of the soil to infiltrate. This water will potentially causes the flooding and puddling issues.
Trend Of Thornthwaite's Aridity Index (Ai) At Atakpame (Togo), Komlan Koudahe
Trend Of Thornthwaite's Aridity Index (Ai) At Atakpame (Togo), Komlan Koudahe
International Programs
Drought can severely affect agricultural production potential, destroying the local economy and creating famine. Data were collected (1990 to 2014) from the Meteorological Department of Togo. Reference evapotranspiration (ETo) varied with two peaks obtained on March 28 (5.84mm) and on November 17 (4.87mm). There was water deficit in all years except 2005 and 2007. Also, there was non-significant increasing trend of aridity index (AI). Specific actions should target efficient water management in Atakpame.
Spatial And Temporal Variation Of Nutrients In The Great Lakes-St. Lawrence Basin: Implications For Primary Production In Stream Ecosystems, Nolan Pearce
Electronic Thesis and Dissertation Repository
Growing human populations and associated land use activities has increased the amount of nutrients delivered to surface waters. Eutrophication from the over-enrichment of nitrogen and phosphorus has degraded ecosystem conditions in streams, lakes, and coastal areas worldwide. Thus, the management of anthropogenic nutrient loading is a global concern. This thesis employed a combination of field and experimental research to provide watershed managers with information on the spatial and temporal patterns in stream nutrient enrichment, and the associated ecological effects of anthropogenic nutrient loading in the Great Lakes-St. Lawrence basin. Four studies were completed to address this research goal. First, I …
Using Climate To Explain And Predict West Nile Virus Risk In Nebraska, Kelly Helm Smith, Andrew J. Tyre, Jeff Hamik, Michael J. Hayes, Yuzhen Zhou, Li Dai
Using Climate To Explain And Predict West Nile Virus Risk In Nebraska, Kelly Helm Smith, Andrew J. Tyre, Jeff Hamik, Michael J. Hayes, Yuzhen Zhou, Li Dai
Drought Mitigation Center: Faculty Publications
We used monthly precipitation and temperature data to give early warning of years with higher West Nile Virus (WNV) risk in Nebraska. We used generalized additive models with a negative binomial distribution and smoothing curves to identify combinations of extremes and timing that had the most influence, experimenting with all combinations of temperature and drought data, lagged by 12, 18, 24, 30, and 36 months. We fit models on data from 2002 through 2011, used Akaike's Information Criterion (AIC) to select the best‐fitting model, and used 2012 as out‐of‐sample data for prediction, and repeated this process for each successive year, …
Use Of Citizen Science In Monitoring Groundwater Quality: A Case Study From Nebraska, Christopher Olson
Use Of Citizen Science In Monitoring Groundwater Quality: A Case Study From Nebraska, Christopher Olson
School of Natural Resources: Dissertations, Theses, and Student Research
Citizen science has a key role in modernizing effective communication between professional scientists and the general public. However, citizen science differs to that of professional science due to equipment and experience and is a topic argued against citizen science. However, technology in water quality testing has developed in simplicity and affordability to a point where high school students, with hands-on training, can collect groundwater samples and test for quality themselves. Nebraska groundwater quality is a critical part of the state and can utilize high school students as citizen scientists for their communities. High school students from rural communities across Nebraska …
Effects Of Management Efforts On Fledging Success Of Endangered Interior Least Terns (Sternula Antillarum Athalassos) On The Mcclellan-Kerr Arkansas River Navigation System In Arkansas, Trevor N. Jensen
Theses and Dissertations from 2020
The Interior Least Tern (Sternula antillarum athalassos) is an endangered shorebird that primarily nests in colonies on barren riverine sandbars on many major river systems throughout the central United States. Water resource development projects such as damming and channelization have altered the natural flow regimes of these systems leading to a decrease in sandbar quality and quantity, and as a result this species is dependent on management to ensure their recovery. Managers within Arkansas have been applying a variety of management approaches to improve sandbar nesting habitat and success of this population intermittently since 2002, with increased intensity since 2015. …
Analysis Of Plant Biomass Production Comparing Decoupled Aquaponics Against Equivalent Single-Loop Aquaponic And Hydroponic Systems Growing Lactuca Sativa, Haley Luise Lucas
Analysis Of Plant Biomass Production Comparing Decoupled Aquaponics Against Equivalent Single-Loop Aquaponic And Hydroponic Systems Growing Lactuca Sativa, Haley Luise Lucas
Theses and Dissertations
Aquaponics is an emerging method of agriculture in which fish and plants are grown in an enclosed and recirculating environment. The method mimics a relationship found in nature where fish waste provides nutrients for plants and plants cleanse the water for the benefit of the fish. This symbiotic relationship has proven to be a sustainable method of agriculture in which there is less water use, no need for pesticides or herbicides, recycling of nutrient waste and a smaller spatial footprint. However, the production of both plants and fish in a recirculating aquaponics system has produced less yield and profit when …