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Natural Resources and Conservation Commons™
Open Access. Powered by Scholars. Published by Universities.®
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- United States Department of Agriculture Wildlife Services: Staff Publications (136)
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Articles 271 - 300 of 468
Full-Text Articles in Natural Resources and Conservation
Patterns In Spatial Use And Movement Of Silver Carp Among Tributaries And Main-Stem Rivers: Insight From Otolith Microchemistry Analysis, J. P. Werner, Q. J. Dean, M. A. Pegg, M. J. Hamel
Patterns In Spatial Use And Movement Of Silver Carp Among Tributaries And Main-Stem Rivers: Insight From Otolith Microchemistry Analysis, J. P. Werner, Q. J. Dean, M. A. Pegg, M. J. Hamel
School of Natural Resources: Faculty Publications
No abstract provided.
Juvenile Chinook Salmon Use Of Sandbar Willows In A Large-Scale, Simulated Riparian Floodplain: Microhabitat And Energetics, N. A. Fangue, D. E. Cocherell, F. Mauduit, J. Poletto, K. Carr, T. A. O'Rear, G. Soyster, S. Lorenzato, J. Carlon, M. L. Kavvas, Cech, J. Joseph Jr.
Juvenile Chinook Salmon Use Of Sandbar Willows In A Large-Scale, Simulated Riparian Floodplain: Microhabitat And Energetics, N. A. Fangue, D. E. Cocherell, F. Mauduit, J. Poletto, K. Carr, T. A. O'Rear, G. Soyster, S. Lorenzato, J. Carlon, M. L. Kavvas, Cech, J. Joseph Jr.
School of Natural Resources: Faculty Publications
No abstract provided.
Feeding Ecology Of Walia Ibex (Capra Walie) In Simien Mountains National Park, Ethiopia, D. Ejigu, A. Bekele, L. A. Powell
Feeding Ecology Of Walia Ibex (Capra Walie) In Simien Mountains National Park, Ethiopia, D. Ejigu, A. Bekele, L. A. Powell
School of Natural Resources: Faculty Publications
No abstract provided.
Simulated Atmospheric Response To Four Projected Land-Use Land-Cover Change Scenarios For 2050 In The North-Central United States, P. Flanagan, R. Mahmood, T. Sohl, M. Svoboda, B. Wardlow, M. J. Hayes, E. Rappin
Simulated Atmospheric Response To Four Projected Land-Use Land-Cover Change Scenarios For 2050 In The North-Central United States, P. Flanagan, R. Mahmood, T. Sohl, M. Svoboda, B. Wardlow, M. J. Hayes, E. Rappin
School of Natural Resources: Faculty Publications
No abstract provided.
Dynamic Landscapes In Northwestern North America Structured Populations Of Wolverines (Gulo Gulo), D. M. Krejsa, S. L. Talbot, S. Sonsthagen, T. S. Jung, A. J. Majoun, J. A. Cook
Dynamic Landscapes In Northwestern North America Structured Populations Of Wolverines (Gulo Gulo), D. M. Krejsa, S. L. Talbot, S. Sonsthagen, T. S. Jung, A. J. Majoun, J. A. Cook
School of Natural Resources: Faculty Publications
No abstract provided.
Assessment Of Dimension-Reduction And Grouping Methods For Catchment Response Time Estimation In Hungary, E. Nagy, J. Szilagyi, P. Torma
Assessment Of Dimension-Reduction And Grouping Methods For Catchment Response Time Estimation In Hungary, E. Nagy, J. Szilagyi, P. Torma
School of Natural Resources: Faculty Publications
No abstract provided.
Reply To Comment By S. Han And F. Tian On "A Calibration-Free Formulation Of The Complementary Relationship Of Evaporation For Continental-Scale Hydrology", J. Szilagyi, R. Crago, R. Qualls
Reply To Comment By S. Han And F. Tian On "A Calibration-Free Formulation Of The Complementary Relationship Of Evaporation For Continental-Scale Hydrology", J. Szilagyi, R. Crago, R. Qualls
School of Natural Resources: Faculty Publications
No abstract provided.
Calibration-Free Complementary Relationship Estimates Terrestrial Evapotranspiration Globally, N. Ma, J. Szilagyi, Y. Zhang
Calibration-Free Complementary Relationship Estimates Terrestrial Evapotranspiration Globally, N. Ma, J. Szilagyi, Y. Zhang
School of Natural Resources: Faculty Publications
No abstract provided.
Spatial And Temporal Trends And Variability Of Rainfall Using Long-Term Satellite Product Over The Upper Blue Nile Basin In Ethiopia, G. T. Ayehu, T. Tadesse, B. Gessesse
Spatial And Temporal Trends And Variability Of Rainfall Using Long-Term Satellite Product Over The Upper Blue Nile Basin In Ethiopia, G. T. Ayehu, T. Tadesse, B. Gessesse
School of Natural Resources: Faculty Publications
No abstract provided.
Combined Use Of Landsat 8 And Sentinel 2a Imagery For Improved Sugarcane Yield Estimation In Wonji-Shoa, Ethiopia, G. Abebe, T. Tadesse, B. G. Awoke
Combined Use Of Landsat 8 And Sentinel 2a Imagery For Improved Sugarcane Yield Estimation In Wonji-Shoa, Ethiopia, G. Abebe, T. Tadesse, B. G. Awoke
School of Natural Resources: Faculty Publications
No abstract provided.
Evaluating Student Attitudes And Learning At Remote Collegiate Soil Judging Events, R. Owen, A. Anderson, A. Bhandari, K. Clark, M. Davis, A. Dere, N. Jelinski, C. Moorberg, K. Osterloh, D. Presley, J. Turk, R. Young
Evaluating Student Attitudes And Learning At Remote Collegiate Soil Judging Events, R. Owen, A. Anderson, A. Bhandari, K. Clark, M. Davis, A. Dere, N. Jelinski, C. Moorberg, K. Osterloh, D. Presley, J. Turk, R. Young
School of Natural Resources: Faculty Publications
No abstract provided.
Manyclasses 1: Assessing The Generalizable Effect Of Immediate Feedback Versus Delayed Feedback Across Many College Classes, E.R. Fyfe, J. R. De Leeuw, P. F. Carvalho, R. L. Goldstone, J. Sherman, D. M. Admiraal, J. Turk Et Al.
Manyclasses 1: Assessing The Generalizable Effect Of Immediate Feedback Versus Delayed Feedback Across Many College Classes, E.R. Fyfe, J. R. De Leeuw, P. F. Carvalho, R. L. Goldstone, J. Sherman, D. M. Admiraal, J. Turk Et Al.
School of Natural Resources: Faculty Publications
No abstract provided.
Towards Routine Mapping Of Crop Emergence Within The Growing Season Using The Harmonized Landsat And Sentinel-2 Dataset, F. Gao, M. Anderson, D. Johnson, R. Seffren, B. Wardlow, A. Suyker, C. Diao, D. M. Browning
Towards Routine Mapping Of Crop Emergence Within The Growing Season Using The Harmonized Landsat And Sentinel-2 Dataset, F. Gao, M. Anderson, D. Johnson, R. Seffren, B. Wardlow, A. Suyker, C. Diao, D. M. Browning
School of Natural Resources: Faculty Publications
No abstract provided.
Tag Type And Location-Dependent Retention Impart Varied Levels Of Bias On Mark–Recapture Parameter Estimates, Douglas L. Zentner, Jonathan J. Spurgeon, Steve E. Lochmann, Christy L. Graham
Tag Type And Location-Dependent Retention Impart Varied Levels Of Bias On Mark–Recapture Parameter Estimates, Douglas L. Zentner, Jonathan J. Spurgeon, Steve E. Lochmann, Christy L. Graham
School of Natural Resources: Faculty Publications
Population parameter estimates from mark–recapture studies are dependent on individuals retaining marks or tags. Therefore, tag retention estimates are needed for different tag types and anatomical tagging locations. Few studies have empirically quantified the bias from tag retention on fish population parameters that are derived from mark–recapture studies. We examined differences in retention between T-bar anchor tags and PIT tags as well as among four anatomical locations for PIT tags in Brown Trout Salmo trutta in a tailwater fishery in Arkansas, USA. We also estimated the relative bias of tag type and PIT tag location on apparent survival estimates from …
Sarcocystis Neurona Transmission From Opossums To Marine Mammals In The Pacific Northwest, A. M. O'Byrne, D. M. Lambourn, D. Rejmanek, K. Haman, E. Vanwormer, K. Shapiro
Sarcocystis Neurona Transmission From Opossums To Marine Mammals In The Pacific Northwest, A. M. O'Byrne, D. M. Lambourn, D. Rejmanek, K. Haman, E. Vanwormer, K. Shapiro
School of Natural Resources: Faculty Publications
No abstract provided.
Aquatic Habitat Changes Within The Channelized And Impounded Arkansas River, Arkansas, Usa, Jonathan J. Spurgeon, Mike Rhodes, J. Wesley Neal, Kristine O. Evans
Aquatic Habitat Changes Within The Channelized And Impounded Arkansas River, Arkansas, Usa, Jonathan J. Spurgeon, Mike Rhodes, J. Wesley Neal, Kristine O. Evans
School of Natural Resources: Faculty Publications
River-wide changes in morphologic character following channelization and impoundment alter the occurrence and distribution of surface water and available habitats for aquatic organisms. Quantifying patterns of creation, redistribution or disappearance of habitats at river-wide and decadal spatiotemporal scales can promote understanding regarding trajectories of different habitat types following alteration and prospects of direct habitat enhancement projects within altered alluvial rivers. Newly available remote-sensing tools and databases may improve detection of river-wide changes in habitat through time. We used a combination of remote-sensing data and generalized linear models to assess changes in surface water coverage from 1984 to 2015 among aquatic …
Influence Of Tundra Polygon Type And Climate Variability On Co2 And Ch4 Fluxes Near Utqiagvik, Alaska, Sigrid Dengel, David Billesbach, Margaret S. Torn
Influence Of Tundra Polygon Type And Climate Variability On Co2 And Ch4 Fluxes Near Utqiagvik, Alaska, Sigrid Dengel, David Billesbach, Margaret S. Torn
School of Natural Resources: Faculty Publications
Arctic tundra has the potential to generate significant climate feedbacks, but spatial complexity makes it difficult to quantify the impacts of climate on ecosystem-atmosphere fluxes, particularly in polygonal tundra comprising wetter and drier polygon types on the scale of tens of meters. We measured CO2, CH4, and energy fluxes using eddy covariance for 7 yr (April to November, 2013–2019) in polygonal tundra near Utqiagvik, Alaska. This period saw the earliest snowmelt, latest snow accumulation, and hottest summer on record. To estimate fluxes by polygon type, we combined a polygon classification with a flux-footprint model. Methane fluxes …
Gas Exchange Measurements In The Unsteady State, Aaron J. Saathoff, Jonathan Mark Welles
Gas Exchange Measurements In The Unsteady State, Aaron J. Saathoff, Jonathan Mark Welles
School of Natural Resources: Faculty Publications
Leaf level gas exchange is a widely used technique that provides real-time measurement of leaf physiological properties, including CO2 assimilation (A), stomatal conductance to water vapour (gsw) and intercellular CO2 (Ci). Modern open-path gas exchange systems offer greater portability than the laboratory-built systems of the past and take advantage of high-precision infrared gas analyzers and optimized system design. However, the basic measurement paradigm has long required steadystate conditions for accurate measurement. For CO2 response curves, this requirement has meant that each point on the curve needs 1–3 min and a full response curve …
Moving Beyond ‘More Crop Per Drop’: Insights From Two Decades Of Research On Agricultural Water Productivity, Meredith Giordano, Susanne M. Scheierling, David O. Tréguer, Hugh Turral, Peter G. Mccornick
Moving Beyond ‘More Crop Per Drop’: Insights From Two Decades Of Research On Agricultural Water Productivity, Meredith Giordano, Susanne M. Scheierling, David O. Tréguer, Hugh Turral, Peter G. Mccornick
Daugherty Water for Food Global Institute: Faculty Publications
Concern over increasing water scarcity has led to the introduction of the concept of agricultural water productivity and an emphasis on interventions to achieve ‘more crop per drop’. Yet, a strong debate continues on how the concept is to be defined and used. Drawing largely from the irrigation literature, the origins of the concept and its methodological developments are reviewed, and its use in applied work over two decades is discussed. Based on this analysis of conceptual and applied research, key insights into the concept’s contributions and limitations are presented, as well as opportunities for further refinements.
Critical Decision Dates For Drought Management In Central And Northern Great Plains Rangelands, A. J. Smart, K. Hamoney, J. D. Scasta, M. Stephenson, J. Volesky, L. T. Vermeire, J. C. Mosley, K. Sedivec, M. Meehan, T. Haigh Et Al.
Critical Decision Dates For Drought Management In Central And Northern Great Plains Rangelands, A. J. Smart, K. Hamoney, J. D. Scasta, M. Stephenson, J. Volesky, L. T. Vermeire, J. C. Mosley, K. Sedivec, M. Meehan, T. Haigh Et Al.
School of Natural Resources: Faculty Publications
No abstract provided.
On The Thermodynamic Foundations Of The Complementary Relationship Of Evaporation, J. Szilagyi
On The Thermodynamic Foundations Of The Complementary Relationship Of Evaporation, J. Szilagyi
School of Natural Resources: Faculty Publications
No abstract provided.
Understanding Patterns And Functional Impacts Of An Invasive Tree And Its Biological Control In A Riparian System, Annie L. Henry
Understanding Patterns And Functional Impacts Of An Invasive Tree And Its Biological Control In A Riparian System, Annie L. Henry
Electronic Theses and Dissertations
Invasive species have become an inextricable part of the landscape, particularly in riparian plant communities, and removal is often a key component of restoration programs. Biological control (biocontrol) is a method of removal that is often both efficient and effective. However, the impact of biocontrol on target species and indirect effects from invasive species removal can be hard to predict. While monitoring the impact of invasive species removal usually involves some species-based assessment such as changes in diversity, historically dominant species or native species, these strategies do not typically provide insight into the mechanisms underlying plant community response to removal. …
Precise Multispecies Agricultural Gas Flux Determined Using Broadband Open-Path Dual-Comb Spectroscopy, D. I. Herman, C. Weerasekara Et Al.
Precise Multispecies Agricultural Gas Flux Determined Using Broadband Open-Path Dual-Comb Spectroscopy, D. I. Herman, C. Weerasekara Et Al.
School of Natural Resources: Documents and Reviews
No abstract provided.
Ua12/13 Student Affairs - Sustainability, Wku Archives
Ua12/13 Student Affairs - Sustainability, Wku Archives
WKU Archives Collection Inventories
Records created by and about the Office of Sustainability.
Bed Particle Displacements And Morphological Development In A Wandering Gravel-Bed River, Ryan Mcqueen, Peter Ashmore, T Millard, N Goeller
Bed Particle Displacements And Morphological Development In A Wandering Gravel-Bed River, Ryan Mcqueen, Peter Ashmore, T Millard, N Goeller
Geography & Environment Publications
Bed particles were tracked using passive integrated transponder tags in a wandering reach of the San Juan River, British Columbia, Canada, to assess particle movement around three major bars in the river. In-channel topographic changes were monitored through repeat LiDAR surveys during this period and used in concert with the tracer data set to assess the relationship between particle displacements and changes in channel morphology, specifically, the development and re-working of bars. This has direct implications for virtual velocity and morphologic based estimates of bedload flux, which rely on accurate estimates of the variability and magnitude of particle path lengths …
Potential Caveats In Land Surface Model Evaluations Using The U.S. Drought Monitor: Roles Of Base Periods And Drought Indicators, H. Wang, L. Xu, M. Hughes, M. Chelliah, D. G. Dewitt, B. A. Fuchs, D. L. Jackson
Potential Caveats In Land Surface Model Evaluations Using The U.S. Drought Monitor: Roles Of Base Periods And Drought Indicators, H. Wang, L. Xu, M. Hughes, M. Chelliah, D. G. Dewitt, B. A. Fuchs, D. L. Jackson
School of Natural Resources: Faculty Publications
No abstract provided.
Developing Persulfate-Activator Soft Solid (Pass) As Slow Release Oxidant To Remediate Phenol-Contaminated Groundwater, Maneekarn Yoo-Iam, Tunlawit Satapanajaru, Chanat Chokejaroenrat, Chainarong Sakulthaew, Steve Comfort, Ann Kambhu
Developing Persulfate-Activator Soft Solid (Pass) As Slow Release Oxidant To Remediate Phenol-Contaminated Groundwater, Maneekarn Yoo-Iam, Tunlawit Satapanajaru, Chanat Chokejaroenrat, Chainarong Sakulthaew, Steve Comfort, Ann Kambhu
School of Natural Resources: Faculty Publications
The research objective was to develop a persulfate-activator soft solid (PASS) as a biodegradable slow-release oxidant to treat phenol-contaminated groundwater. PASS was prepared by graft copolymerization of acrylic acid (AA) and acrylamide (AM) onto 1% (w/v) sodium alginate mixed with 500 mg L−1 sodium persulfate and 5 mg L−1 ferrous sulfate. The physical and chemical properties of PASS were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, the water content and swelling ratio. Various variables, including the ratio of AA/AM, pH, temperature and the type of groundwater cations affecting PS release, were …
Effects Of Drought On Groundwater-Fed Lake Areas In The Nebraska Sand Hills, N. Shrestha, A. R. Mittelstet, T. E. Gilmore, V. Zlotnik, C. Neale
Effects Of Drought On Groundwater-Fed Lake Areas In The Nebraska Sand Hills, N. Shrestha, A. R. Mittelstet, T. E. Gilmore, V. Zlotnik, C. Neale
School of Natural Resources: Faculty Publications
No abstract provided.
Implications Of Historical And Contemporary Processes On Genetic Differentiation Of A Declining Boreal Songbird: The Rusty Blackbird, R. E. Wilson, S. M. Matsuoka, L. L. Powell, J. A. Johnson, D. W. Demarest, D. Stralberg, S. Sonsthagen
Implications Of Historical And Contemporary Processes On Genetic Differentiation Of A Declining Boreal Songbird: The Rusty Blackbird, R. E. Wilson, S. M. Matsuoka, L. L. Powell, J. A. Johnson, D. W. Demarest, D. Stralberg, S. Sonsthagen
School of Natural Resources: Faculty Publications
No abstract provided.
Evaluating Potential Effects Of Solar Power Facilities On Wildlife From An Animal Behavior Perspective, Rachel Y. Chock, Barbara Clucas, Elizabeth K. Peterson, Bradley Blackwell, Daniel T. Blumstein, Kathleen Church, Esteban Fernández-Juricic, Gabriel Francescoli, Alison L. Greggor, Paul Kemp, Gabriela M. Pinho, Peter M. Sanzenbacher, Bruce A. Schulte, Pauline Toni
Evaluating Potential Effects Of Solar Power Facilities On Wildlife From An Animal Behavior Perspective, Rachel Y. Chock, Barbara Clucas, Elizabeth K. Peterson, Bradley Blackwell, Daniel T. Blumstein, Kathleen Church, Esteban Fernández-Juricic, Gabriel Francescoli, Alison L. Greggor, Paul Kemp, Gabriela M. Pinho, Peter M. Sanzenbacher, Bruce A. Schulte, Pauline Toni
United States Department of Agriculture Wildlife Services: Staff Publications
Solar power is a renewable energy source with great potential to help meet increasing global energy demands and reduce our reliance on fossil fuels. However, research is scarce on how solar facilities affect wildlife. With input from professionals in ecology, conservation, and energy, we conducted a research-prioritization process and identified key questions needed to better understand impacts of solar facilities on wildlife. We focused on animal behavior, which can be used to identify population responses before mortality or other fitness consequences are documented. Behavioral studies can also offer approaches to understand the mechanisms leading to negative interactions (e.g., collision, singeing, …