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Articles 241 - 270 of 281
Full-Text Articles in Life Sciences
Songbirds, Pesticides, And Golf Courses: Exposure And Effects, Ryan Brennan Burdge
Songbirds, Pesticides, And Golf Courses: Exposure And Effects, Ryan Brennan Burdge
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of Climate Change On Biodiversity: Pressing Issues And Research Priorities, Friedhelm Krupp, Lytton J. Musselman, Mohammed M.A. Kotb, Ilka Weidig
The Effects Of Climate Change On Biodiversity: Pressing Issues And Research Priorities, Friedhelm Krupp, Lytton J. Musselman, Mohammed M.A. Kotb, Ilka Weidig
Biological Sciences Faculty Publications
No abstract provided.
Biological And Economic Considerations In Establishing A Short-Rotation Bioenergy Plantation, Jamie L. Schuler, M. Pelkki, Chris Stuhlinger
Biological And Economic Considerations In Establishing A Short-Rotation Bioenergy Plantation, Jamie L. Schuler, M. Pelkki, Chris Stuhlinger
Journal of the Arkansas Academy of Science
The development of bio-fuel synthesis technologies has led to increased interest in woody crops grown specifically for energy production. These woody feedstocks typically involve fast-growing species (e.g., Salix spp., Populus spp.) planted at high densities using short rotations and intensive cultural practices like weed control and fertilization. Under ideal conditions, this type of system can produce 20 dry Mg/ha/yr, which is substantially higher than the 2.5-4 dry Mg/ha/yr produced by pine plantations in the southern U.S. Many of these plantings are projected to be established on lower quality agricultural lands. Recent attempts at establishing these plantations have highlighted some of …
Farming Systems Education: Case Study Of Swedish Test Pilots, Lennart Salomonsson, Anna Nilsson, Sofia Palmer, Adam Roigart, Charles A. Francis
Farming Systems Education: Case Study Of Swedish Test Pilots, Lennart Salomonsson, Anna Nilsson, Sofia Palmer, Adam Roigart, Charles A. Francis
Department of Agronomy and Horticulture: Faculty Publications
We describe and analyze a pedagogical experiment that introduced a broad and holistic perspective on complete farming systems, systemic learning tools, and a participatory learning strategy at an early stage in agronomy education. The paper describes the adventure of three students, who came from a conventional agronomy program at the Swedish University of Agricultural Sciences (SLU), who were frustrated with the lack of integrated approaches to the study of agricultural systems and a strong focus on molecular-level processes in their first year of education. They encountered a narrow focus in most courses and the overall curricula of agricultural education that …
Nona-Arginine Peptides Facilitate Cellular Entry Of Semiconductor Nanocrystals: Mechanisms Of Uptake, Yi Xu
Nona-Arginine Peptides Facilitate Cellular Entry Of Semiconductor Nanocrystals: Mechanisms Of Uptake, Yi Xu
Masters Theses
"Luminescent semiconductor quantum dots (QDs) have recently been used for delivering and monitoring biomolecules, such as drugs and proteins. However, QDs alone have a very low efficiency of transport across the plasma membrane. In order to increase the efficiency of QD delivery, synthetic nona-arginine (sR9) was used, a cell penetrating peptide, to facilitate uptake. Data demonstrated that sR9 could significantly increase the cellular uptake of QDs by noncovalent binding between QDs and sR9. Furthermore, the mechanisms of QD/sR9 cellular internalization were investigated. Low temperature and metabolic inhibitors markedly inhibited the uptake of QD/sR9, indicating that internalization is an energy-dependent process. …
Effect Of Drought And Agriculture On Ring-Necked Pheasant Abundance, Nebraska Panhandle, Charles J. Randel Iii
Effect Of Drought And Agriculture On Ring-Necked Pheasant Abundance, Nebraska Panhandle, Charles J. Randel Iii
The Prairie Naturalist
The objectives of my study were to detennine the effects of drought (e.g., Palmer Modified Drought Severity Index; PMDI, Bridges et at. 2001) and/or agricultural practices (e.g., conversion) on RNP abundance in the Nebraska Panhandle (NP).
My RNP survey data were found to be correlated negatively to drought condition (PMDI) in January, February, and April. This was supported by Snyder (1984) and Riley (1995), both of whom reported that decreased precipitation in spring affected RNP production in the western Great Plains and Iowa, respectively. Late winter and early spring drought affect subsoil moisture and decrease primary production (Kiesselbach et al. …
The Prairie Naturalist Manuscript Submission Guidelines, Christopher N. Jacques, Troy W. Grovenburg, Jonathan Jenks
The Prairie Naturalist Manuscript Submission Guidelines, Christopher N. Jacques, Troy W. Grovenburg, Jonathan Jenks
The Prairie Naturalist
These guidelines present The Prairie Naturalist (PNAT) policies and procedures for submitting scientific manuscripts for consideration for publication. In January 2009, a change in Editorial staff occurred and these guidelines address the ongoing transition and update the online "Suggestions for Contributors" guidelines provided on the PNAT website (http://www.fhsu.edu/biology/pn/prairienat.htm); these instructions supersede all previous guidelines. Tables and appendices are included for common word expressions with superfluous wording, examples of correct format and style guidelines for tables accompanying manuscripts, guidance in properly preparing Research Articles and Notes, citing literature, and mandatory abbreviations for tables, figures and parenthetical expressions.
Third Report Of The North Dakota Bird Records Committee: 2004-2005, Dan Svingen, Ron E. Martin
Third Report Of The North Dakota Bird Records Committee: 2004-2005, Dan Svingen, Ron E. Martin
The Prairie Naturalist
Since 1979, North Dakota's bird records committee has collected, evaluated, and archived documentations of rare bird occurrences in the state. In 2004 and 2005, this committee resolved 189 rare bird records. On the basis of these record reviews, six species were ad~ed to the North Dakota state bird list: mottled duck (Anas fulvigula), yellow-billed loon (Cavia adamsii), white-tailed kite (Elanus leucurus), little stint (Calidris minuta), glaucous-winged gull (Larus glaucescens), and great black-backed gull (Larus marinus). Four species were added to the list of nesting species within the state: snowy …
Common Raven Nests In North Dakota After 100-Year Hiatus, Melvin P. Nenneman, Todd A. Grant, Ron E. Martin
Common Raven Nests In North Dakota After 100-Year Hiatus, Melvin P. Nenneman, Todd A. Grant, Ron E. Martin
The Prairie Naturalist
Our observations represent the first documented nesting by the common raven in North Dakota since the late 1800's. Houston (1977) suggested that the expansion of the American crow onto the Canadian prairies was limited by the scarcity of trees for nest sites, which also might have limited the extent of the common raven. Aspen woodland has increased substantially in and around J. Clark Salyer National Wildlife Refuge since European settlement, due primarily to fire suppression and extirpation of large herbivores (Grant and Murphy 2005). Thus, plausibly these increases in woodland habitat might be providing nest sites necessary for the common …
Factors Associated With Duck Use Of Impounded And Natural Wetlands In Western South Dakota, Jane E. Austin, Deborah A. Buhl
Factors Associated With Duck Use Of Impounded And Natural Wetlands In Western South Dakota, Jane E. Austin, Deborah A. Buhl
The Prairie Naturalist
Many wetlands in the northern Great Plains west of the Missouri River are stock ponds, created by impoundment of natural drainages or excavation of existing wetlands to provide water for livestock or improve habitat for waterfowl. We evaluated factors influencing use of wetlands by breeding duck pairs and broods relative to modification, water regime, size, and hydrological location on United States Forest Service lands within the Grand River National Grassland in northern South Dakota (2003 and 2004). Responses for both indicated pairs and broods were related positively to wet area, total wetland area within 4 km, emergent edge cover, and …
Brood Parasitism In A North American Population Of White-Faced Ibis, Mark E. Clark
Brood Parasitism In A North American Population Of White-Faced Ibis, Mark E. Clark
The Prairie Naturalist
In 2007 while monitoring reproductive success among various overwater nesting birds at J. Clark Salyer National Wildlife Refuge in North Dakota, I observed parasitism of a white-faced ibis nest by a cattle egret. I located a nest on 23 May 2007 that contained four white-faced ibis eggs and one cattle egret egg. The nest was located in the middle of a small colony of nesting white-faced ibis (approximately 35 pairs) and black-crowned night herons (approximately 30 pairs). On 3 June 2007 all of the eggs were still present in the nest, but two of the white-faced ibis eggs began hatching …
Enso And Variability Of The Antarctic Peninsula Pelagic Marine Ecosystem, Valerie J. Loeb, Eileen E. Hofmann, John M. Klinck, Osmund Holm-Hansen, Warren B. White
Enso And Variability Of The Antarctic Peninsula Pelagic Marine Ecosystem, Valerie J. Loeb, Eileen E. Hofmann, John M. Klinck, Osmund Holm-Hansen, Warren B. White
CCPO Publications
The West Antarctic Peninsula region is an important source of Antarctic krill (Euphausia superba) in the Southern Ocean. From 1980-2004 abundance and concentration of phytoplankton and zooplankton, krill reproductive and recruitment success and seasonal sea ice extent here were significantly correlated with the atmospheric Southern Oscillation Index and exhibited three- to five-year frequencies characteristic of El Nino-Southern Oscillation (ENSO) variability. This linkage was associated with movements of the Southern Antarctic Circumpolar Current Front and Boundary, a changing influence of Antarctic Circumpolar Current and Weddell Sea waters, and eastward versus westward flow and mixing processes that are consistent with forcing by …
Prawn Aquaculture In Western Australia. Final Esd Risk Assessment Report For Prawn Aquaculture., Department Of Fisheries Western Australia
Prawn Aquaculture In Western Australia. Final Esd Risk Assessment Report For Prawn Aquaculture., Department Of Fisheries Western Australia
Fisheries management papers
The Western Australian Department of Fisheries is responsible for the management of aquaculture in WA and is committed to implementing ESD. These principles are contained within the objectives of the Fish Resources Management Act 1994 and the Department is keen to demonstrate both to the Government and the broader community that these principles are being achieved. The Department developed a policy statement in 2002 - Policy for the Implementation of Ecologically Sustainable Development for Fisheries and Aquaculture within Western Australia - (Fletcher 2002) that described its direction to the Department on incorporating ESD within fisheries and aquaculture management.
Using the …
Setting Targets For Resource Condition In Doradine Catchment, Leon Van Wyk, Gregory Paul Raper
Setting Targets For Resource Condition In Doradine Catchment, Leon Van Wyk, Gregory Paul Raper
Resource management technical reports
No abstract provided.
The Impact Of The "Profitable Perennials" Project On Adoption : An Evaluation, Jamie Bowyer, Rebecca Heath
The Impact Of The "Profitable Perennials" Project On Adoption : An Evaluation, Jamie Bowyer, Rebecca Heath
Resource management technical reports
No abstract provided.
Setting Targets For Resource Condition In Upper Crossman Catchment, Leon Vanwyk, Gregory Paul Raper
Setting Targets For Resource Condition In Upper Crossman Catchment, Leon Vanwyk, Gregory Paul Raper
Resource management technical reports
No abstract provided.
Surface Water Management In The East Yornaning Catchment, Tilwin Westrup
Surface Water Management In The East Yornaning Catchment, Tilwin Westrup
Resource management technical reports
No abstract provided.
Landscapes And Soils Of The Merredin District, D N. Sawkins, Department Of Agriculture And Food
Landscapes And Soils Of The Merredin District, D N. Sawkins, Department Of Agriculture And Food
Bulletins 4000 -
The publication aims to provide readers with the principles underlying the formation of local landscapes and soils, and the ability to identify landscapes and their associated soils.
Setting Targets For Resource Condition In Lake Towerrinning Catchment, G Paul Raper, Leon Vanwyk
Setting Targets For Resource Condition In Lake Towerrinning Catchment, G Paul Raper, Leon Vanwyk
Resource management technical reports
No abstract provided.
Setting Targets For Resource Condition In Yilliminning Catchment, Leon Van Wyk, Gregory Paul Raper
Setting Targets For Resource Condition In Yilliminning Catchment, Leon Van Wyk, Gregory Paul Raper
Resource management technical reports
No abstract provided.
Tambellup-Borden Land Resources Survey, Angela Stuart-Street, Rohan Marold
Tambellup-Borden Land Resources Survey, Angela Stuart-Street, Rohan Marold
Land resources series
No abstract provided.
Progress In Strategic Research Areas, Scott R. Abella
Progress In Strategic Research Areas, Scott R. Abella
Public Policy and Leadership Faculty Publications
Three years ago through conversations with resource managers, assessing the status of knowledge of the scientific literature, and our own interests, we set forth several strategic research areas that we believed would be timely for advancing Mojave Desert conservation and management.
An Inventory And Condition Survey Of The Lower Murchison River Area, Western Australia, P Hennig
An Inventory And Condition Survey Of The Lower Murchison River Area, Western Australia, P Hennig
Technical Bulletins
The inventory and condition survey of the lower Murchison River area, undertaken by the Department of Agriculture and Food, Western Australia (DAFWA) between 2002 and 2003, describes and maps the natural resources of the region’s pastoral leasehold land. This survey report provides a baseline record of the existence and condition of the natural area’s resources, to assist with the planning and implementation of land management practices. The report identified and described the condition of soils, landforms, vegetation, habitat, ecosystems, and declared plants and animals. It also assessed the impact of pastoralism and made land management recommendations. This survey report presents …
Electricity Generation And Ethanol Production Using Iron-Reducing, Haloalkaliphilic Bacteria, Varun Paul
Electricity Generation And Ethanol Production Using Iron-Reducing, Haloalkaliphilic Bacteria, Varun Paul
Masters Theses
"Microbial life in extreme environments has been studied primarily for their metabolic activities. Very few commercial or industrial applications have been known from these systems. In this study, the metabolic pathways and properties of bacteria from a haloalkaliphilic environment of Soap Lake, Washington were employed in two research applications related to energy production. In the first study, the bacterial cultures that were known to reduce iron (III) were used in a Microbial Fuel Cell (MFC) reactor. Iron reducing bacteria have shown to shunt their electrons on to the surface of a carbon electrode of an MFC, and the electrons can …
In Vitro Evaluation Of Bioactive Glass Scaffolds And Modified Bioactive Glasses With An Osteogenic Cell Line, Vernon C. Modglin
In Vitro Evaluation Of Bioactive Glass Scaffolds And Modified Bioactive Glasses With An Osteogenic Cell Line, Vernon C. Modglin
Masters Theses
"This investigation consisted of two parts focused on bioactive glasses and scaffolds for in vitro growth of bone cells for tissue engineering and bone repair. The first part involved evaluation of the ability of two new types of porous 13-93 bioactive glass scaffolds to support the growth and differentiation of mouse MLO-AS cells, an established osteogenic cell line used as a model of developing bone tissue. The two scaffold types tested included 13-93 glass fiber and trabecular-like scaffolds seeded with MLO-AS cells and cultured for intervals of 2 to 12 days. Collectively, in vitro results indicate that the 13-93 glass …
Oxidative Stress, Calcium Homeostasis, And Altered Gene Expression In Human Lung Epithelial Cells Exposed To Zno Nanoparticles, Chuan-Chin Huang
Oxidative Stress, Calcium Homeostasis, And Altered Gene Expression In Human Lung Epithelial Cells Exposed To Zno Nanoparticles, Chuan-Chin Huang
Masters Theses
"The influence of 20 nm ZnO nanoparticles on oxidative stress, intracellular calcium homeostasis, and gene expression was studied in human bronchial epithelial cells (BEAS-2B). ZnO caused a concentration- and time-dependent cytotoxicity while elevating oxidative stress and causing membrane damage (cellular LDH release). There was a remarkably steep relationship between concentration and toxicity at concentrations from 5 to 10 μg/ml. Exposure to ZnO increased intracellular calcium levels in a concentration- and time-dependent manner. Treatment with the antioxidant N-acetylcysteine prevented cell loss and diminished the increase in intracellular calcium concentration, suggesting oxidative stress mediated cytotoxicity. Exposure to a sublethal concentration of ZnO …
A Numerical Modeling Study On Barotropic And Baroclinic Responses Of The Chesapeake Bay To Hurricane Events, Kyoung-Ho Cho
A Numerical Modeling Study On Barotropic And Baroclinic Responses Of The Chesapeake Bay To Hurricane Events, Kyoung-Ho Cho
Dissertations, Theses, and Masters Projects
The barotropic and baroclinic responses of the Chesapeake Bay to forcings from two hurricanes were investigated by using unstructured-grid three-dimensional hydrodynamic models. The model domain includes Chesapeake Bay proper, the tributaries, and its extended continental shelf in the mid-Atlantic Bight. Two hurricanes were studied: Hurricane Floyd of September, 1999 and Hurricane Isabel of September, 2003, both of which made landfall within 100 km of the Chesapeake Bay mouth. Hurricane Floyd in 1999 passed through the entrance of the Bay from southwest to northeast along the coastlines of Virginia as a Category 1 storm, whereas Hurricane Isabel in 2003 made landfall …
Ecosystems Services Of Tidal Shorelines, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Ecosystems Services Of Tidal Shorelines, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Reports
Rivers & Coast is a periodic publication of the Center for Coastal Resources Management, Virginia Institute of Marine Science. The goal of Rivers & Coast is to keep readers well informed of current scientific understanding behind key environmental issues related to watershed rivers and coastal ecosystems of the Chesapeake Bay.
Virginia Game Fish Tagging Program Annual Report 2008, John A. Lucy, Lewis Gillingham
Virginia Game Fish Tagging Program Annual Report 2008, John A. Lucy, Lewis Gillingham
Reports
Through 2008, the Virginia Game Fish Tagging Program has maintained a database comprised of 14 years of data on tagged and recaptured fish. The program is a cooperative project of the Virginia Saltwater Fishing Tournament (VSFT-under the Marine Resources Commission) and the Virginia Institute of Marine Science (VIMS) of the College of William and Mary (under VIMS Sea Grant Marine Advisory Program).
Wilson Inlet Catchment Appraisal 2007, Ron Master
Wilson Inlet Catchment Appraisal 2007, Ron Master
Resource management technical reports
No abstract provided.