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Articles 4381 - 4410 of 11338
Full-Text Articles in Entire DC Network
Alcohol Outlet Density And Intimate Partner Violence In A Nonmetropolitan College Town: Accounting For Neighborhood Characteristics And Alcohol Outlet Types, Aleksandra J. Snowden
Alcohol Outlet Density And Intimate Partner Violence In A Nonmetropolitan College Town: Accounting For Neighborhood Characteristics And Alcohol Outlet Types, Aleksandra J. Snowden
Social and Cultural Sciences Faculty Research and Publications
There is a growing evidence of an ecological association between alcohol outlet density and intimate partner violence. It is reasonable to assume, however, that not all types of alcohol outlets contribute equally to criminal behavior, and to date, most ecological studies have been of large urban cities. Using Bloomington, Indiana, block groups as units of analysis and controlling for several structural characteristics associated with violence rates, I estimated spatially lagged regression models to determine if the variation in alcohol outlet density, including total outlets and disaggregating by on- and off-premise outlets, is related to intimate partner violence density. Results suggested …
Impacts Of Environmental Changes To The Middle Rio Grande Landscape On Ysleta Del Sur Pueblo's Cultural And Cermonial Sustainability, Andrea L. Everett
Impacts Of Environmental Changes To The Middle Rio Grande Landscape On Ysleta Del Sur Pueblo's Cultural And Cermonial Sustainability, Andrea L. Everett
Open Access Theses & Dissertations
Given future climate scenarios, this Thesis investigates how plausible climate changes will further impact the Native American community of Ysleta del Sur Pueblo's (Tiguas) cultural continuity and access to riparian ecosystem services along the Rio Grande River (specific to Tigua tradition; riparian vegetation used in ceremony, i.e. Gooding's and Coyote willow). The project aims to (1) describe and understand the relationship between regional climatic changes, anthropogenic changes, and major events in Tigua history, (2) identify rates and patterns of riparian vegetation changes, (3) evaluate impacts on cultural and provisioning ecosystem services relevant to Tigua culture, and relate these to climate …
Drinking Water And Autism: Using Spatial Cluster Detection To Explore Patterns Of Autism Cases In Lane County, Oregon, Sherry Sandreth
Drinking Water And Autism: Using Spatial Cluster Detection To Explore Patterns Of Autism Cases In Lane County, Oregon, Sherry Sandreth
Walden Dissertations and Doctoral Studies
Autism Spectrum Disorders (ASD) are a complex array of neurological disorders with a diverse presentation, multiple etiologies, and long-term ramifications. Prevalence of ASD in the United States is about 1 in 50 children as of 2013, making it a significant public health problem. The etiology is not understood, and it is widely accepted that it is multicausal, with genetic and environmental influences. Prior research suggests an association between water source and ASD. Contaminants such as lead, arsenic, mercury, pharmaceuticals and pesticides found in water are associated with developmental disorders suggesting that a systematic review focused on water source was warranted. …
Natural History, Phenology, And Stream Use Of Hyla Plicata From The Arroyo Los Axolotes, State Of Mexico, Mexico, J. A. Lemos-Espinal, Geoffrey R. Smith, A. Hernandez Ruiz, R. Montoya Ayala
Natural History, Phenology, And Stream Use Of Hyla Plicata From The Arroyo Los Axolotes, State Of Mexico, Mexico, J. A. Lemos-Espinal, Geoffrey R. Smith, A. Hernandez Ruiz, R. Montoya Ayala
Faculty Publications
No abstract provided.
Amphibians And Reptiles Of The State Of Nuevo Leon, Mexico, J. A. Lemos-Espinal, Geoffrey R. Smith, A. Cruz
Amphibians And Reptiles Of The State Of Nuevo Leon, Mexico, J. A. Lemos-Espinal, Geoffrey R. Smith, A. Cruz
Faculty Publications
No abstract provided.
Valuing Natural Space And Landscape Fragmentation In Richmond, Va, Lee Wyatt Carpenter
Valuing Natural Space And Landscape Fragmentation In Richmond, Va, Lee Wyatt Carpenter
Theses and Dissertations
Hedonic pricing methods and GIS (Geographic Information Systems) were used to evaluate relationships between sale price of single family homes and landscape fragmentation and natural land cover. Spatial regression analyses found that sale prices increase as landscapes become less fragmented and the amount of natural land cover around a home increases. The projected growth in population and employment in the Richmond, Virginia region and subsequent increases in land development and landscape fragmentation presents a challenge to sustaining intact healthy ecosystems in the Richmond region. Spatial regression analyses helped illuminate how land cover patterns influence sale prices and landscape patterns that …
Review Of Unique Odd Chromosome-Numbered Underground Rodent Species Ofthe Palearctic Region: Ellobius Lutescens Thomas 1897 (Rodentia: Cricetidae), Yüksel Coşkun
Turkish Journal of Zoology
A review of the species within the genus Ellobius from Turkey is provided. The Transcaucasian mole vole, Ellobius lutescens, is the westernmost representative of the genus and among the most enigmatic and yet most neglected of the Palearctic placental mammals. Currently, its distribution is thought to be restricted to eastern Anatolia. The Transcaucasian mole voles inhabit a wide variety of habitats across this distribution area in semiarid or grassland territories and high-elevation cultivated fields. The species' distribution, feeding ecology, population structure, behavior, reproduction, genetics, and fossil records are reviewed here for Turkey. This paper brings together information published during the …
Current Status, Distribution, And Conservation Of Brown Bear (Ursidae) Andwild Canids (Gray Wolf, Golden Jackal, And Red Fox; Canidae) In Turkey, Hüseyi̇n Ambarli, Alper Ertürk, Anil Soyumert
Current Status, Distribution, And Conservation Of Brown Bear (Ursidae) Andwild Canids (Gray Wolf, Golden Jackal, And Red Fox; Canidae) In Turkey, Hüseyi̇n Ambarli, Alper Ertürk, Anil Soyumert
Turkish Journal of Zoology
Turkey has viable populations of many carnivore species of the Western Palearctic. Among those, ursids and canids are represented by brown bear (Ursus arctos) and 3 canid species, gray wolf (Canis lupus), golden jackal (Canis aureus), and red fox (Vulpes vulpes), respectively. Those species occur in major ecosystems of Turkey and experience a wide range of threats, and they are at the center of human-wildlife conflicts. However, due to a limited number of studies about their ecology and taxonomy, their current distributions, population sizes, and statuses are vague. In this study, we document the 4 species' known data in terms …
The Importance Of Motivation, Weapons, And Foul Odors In Driving Encounter Competition In Carnivores, Maximilian L. Allen, Christopher C. Wilmers, L. Mark Elbroch, Julie M. Golla, Heiko U. Wittmer
The Importance Of Motivation, Weapons, And Foul Odors In Driving Encounter Competition In Carnivores, Maximilian L. Allen, Christopher C. Wilmers, L. Mark Elbroch, Julie M. Golla, Heiko U. Wittmer
Environment and Society Faculty Publications
Encounter competition is interference competition in which animals directly contend for resources. Ecological theory predicts the trait that determines the resource holding potential (RHP), and hence the winner of encounter competition, is most often body size or mass. The difficulties of observing encounter competition in complex organisms in natural environments, however, has limited opportunities to test this theory across diverse species. We studied the outcome of encounter competition contests among mesocarnivores at deer carcasses in California to determine the most important variables for winning these contests. We found some support for current theory in that body mass is important in …
Clinical Practice Guidelines On The Management Of Variceal Bleeding, Javed Iqbal Farooqi, Hasnain Ali Shah, Anwaar A. Khan, Amjad Salamat, Altaf Alam, Abbas Khan Khattak, Nazish Butt, Muhammed Salih, Sher Sher Rehman, Arif Amir Nawaz, Nasir Khokhar, Ghias-Un-Nabi Tayyab, Javed Aslam Butt, Kashif Malik, Shakeel Ahmad Mirza, Mohammad Akram
Clinical Practice Guidelines On The Management Of Variceal Bleeding, Javed Iqbal Farooqi, Hasnain Ali Shah, Anwaar A. Khan, Amjad Salamat, Altaf Alam, Abbas Khan Khattak, Nazish Butt, Muhammed Salih, Sher Sher Rehman, Arif Amir Nawaz, Nasir Khokhar, Ghias-Un-Nabi Tayyab, Javed Aslam Butt, Kashif Malik, Shakeel Ahmad Mirza, Mohammad Akram
Department of Medicine
Gastroesophageal variceal bleeding occurs in 30 - 50% of patients of liver cirrhosis with portal hypertension, with 20-70% mortality in one year. Therefore, it is essential to screen these patients for varices and prevent first episode of bleeding by treating them with β-blockers or endoscopic variceal band ligation. Ideally, the patients with variceal bleeding should be treated in a unit where the personnel are familiar with the management of such patients and where routine therapeutic interventions can be undertaken. Proper management of such patients include: initial assessment, resuscitation, blood volume replacement, vasoactive agents, prevention of associated complications such as bacterial …
Restorasi Tingkat Mikro Dalam Sistem Sosial Budaya Indonesia Untuk Mencegah Kematian Ibu, Sari Viciawati Machdum, Sofyan Cholid, Annisah -, Johanna Debora Imelda
Restorasi Tingkat Mikro Dalam Sistem Sosial Budaya Indonesia Untuk Mencegah Kematian Ibu, Sari Viciawati Machdum, Sofyan Cholid, Annisah -, Johanna Debora Imelda
Antropologi Indonesia
The complexity of culture and territory in Indonesia make social protection implementation challenging. Mothers have internal factors that forbid them to know and intend to use social health protection program so that the maternal mortality rate (MMR) in 2015 did not decrease. This study found that there were particular internal factor problems of the teenage mother. Besides being hampered by the administration because of their age, young mothers became vulnerable because of their immature psychological and emotional aspects. In the midst of unsupportive social and cultural conditions, teenage mothers altered to the weaker position. Whereas the growth and development of …
Phenotypic Characterization Of The Peach (Prunus Spp.) Collection At The National Clonal Germplasm Repository In Davis, California, Tim Moran
EWU Masters Thesis Collection
"Germplasm repositories are an invaluable resource for the collection and preservation of important living genetic material, and provide a multitude of research opportunities for crop improvement. Advances in genomics research have created an urgent demand for phenotypic data in order to assist researchers in identifying relationships between genetic makeup and phenotypic variability. The peach, Prunus persica, is an important economic crop species that is heavily bred and cultivated. In peach, specific tree growth habits are used in breeding to select for tree architectures that may provide growers with more options for orchard design and cultural practices. The presence of extrafloral …
Improving The Inference Of Some Experiemtal Studies By Using Ranked Auxiliary Covariates, Rajai Jabrah
Improving The Inference Of Some Experiemtal Studies By Using Ranked Auxiliary Covariates, Rajai Jabrah
College of Graduate Studies: Theses & Dissertations
In many studies, the measurement of sampling units according to the response variable is costly or time consuming, however, it is possible to rank sampling units according to baseline auxiliary covariates, which are available, easily obtainable, and cost efficient. In these cases, when estimating the population mean, Ranked Set Sampling (RSS) can be a more efficient sampling method than the Simple Random Sampling (SRS) method. In this dissertation, we propose a modified approach of the RSS method to allocate units into an experimental study, aimed to compare two or more groups.
Ranked auxiliary covariates, which are typically correlated with the …
Combined Effects Of Tetrakis Hydroxymethyl Phosphonium Chloride And Ammonium On Plankton Community Structure In Blackwater Pond Mesocosms, Marina N. Osier
Combined Effects Of Tetrakis Hydroxymethyl Phosphonium Chloride And Ammonium On Plankton Community Structure In Blackwater Pond Mesocosms, Marina N. Osier
College of Graduate Studies: Theses & Dissertations
Flame retardant chemicals enter aquatic systems through municipal and industrial wastewater, and despite being detected in surface waters, most have not been thoroughly assessed for environmental risk. Halogenated flame retardants, known to be persistent and highly toxic to aquatic organisms are being phased out, and replaced with new or under-tested organophosphorus flame retardants. Organophosphorus flame retardants, such as tetrakis hydroxymethyl phosphonium chloride (THPC), often have similar applications to and are generally not as persistent as halogenated flame retardants. Single-species toxicity tests of organophosphorus flame retardants reveal a wide range of toxicity values within the range of environmentally relevant concentrations in …
Consumption Of Sugar-Sweetened Beverages Associated With Increased Odds Of Depression, Chad E. Burleson, Kendall Anderson, Z. Copeland, Kelly L. Sullivan
Consumption Of Sugar-Sweetened Beverages Associated With Increased Odds Of Depression, Chad E. Burleson, Kendall Anderson, Z. Copeland, Kelly L. Sullivan
Epidemiology: Faculty Publications (2002-2018)
Objective: To evaluate the association between depression and sugary drink intake using participant data from the Behavioral Risk Factor Surveillance Survey (BRFSS).
Design: Cross-sectional data from the 2012 and 2013 BRFSS were examined (N=44,603). Depression was based on self-report of symptoms within the past 30 days. Covariates included age, sex, race, employment status, body mass index (BMI), education level, and exercise in the past 30 days.
Setting: Data from a national telephone survey (BRFSS) were used to assess risk factors associated with health of the participants.
Subjects: Participants in the 2012 and 2013 BRFSS were included in this analysis (N=44,603). …
A Bio-Ecological Perspective On Educational Transition: Experiences Of Children, Parents And Teachers., Leah O'Toole
A Bio-Ecological Perspective On Educational Transition: Experiences Of Children, Parents And Teachers., Leah O'Toole
Doctoral
This thesis explores the potential of Bronfenbrenner’s Bio-ecological Model of Human Development (Bronfenbrenner and Morris, 2006) as a framework for theory and research in psychology, sociology and education. It draws on other well-known conceptual approaches, particularly Bourdieu’s theories of social reproduction, habitus, field and cultural capital, investigating points of theoretical enhancement and synthesis. This culminates in the development of eight Propositions for a Bio-ecological Framework. These are then tested using data from a qualitative examination of two key educational transitions, pre-school to primary and primary to secondary school. Using qualitative methodologies, this research explores perspectives of children, teachers and parents …
Integration Of Multispectral Camera Systems For Enhanced Visualization Biological Studies Using Uas, Subin Shahukhal
Integration Of Multispectral Camera Systems For Enhanced Visualization Biological Studies Using Uas, Subin Shahukhal
Theses and Dissertations
The purpose of this research is to enhance visualization of warm-blooded animals and analyze the vegetation in which they are located using a camera system mounted on Unmanned Aircraft System (UAS). The results are coherently displayed in a single image at the same spatial location so that biologists will have accurate animal counts along with vegetation conditions. Application of aerial imagery has been used to analyze the vegetation health and determining the number of the animals by the wildlife service. However, a major obstacle of the research is to combine the two imaging systems to obtain the same spatial image …
Ant Diversity And Community Structure In Coastal Dunes And Wetlands, Xuan Chen
Ant Diversity And Community Structure In Coastal Dunes And Wetlands, Xuan Chen
LSU Doctoral Dissertations
How do many species live in a certain place? How does species composition changes among habitats? And what mechanisms decide species distribution? These are fundamental questions in community ecology. I first investigated ant diversity in two coastal ecosystems (dunes and wetlands) in the northern Gulf of Mexico, and then used the distribution patterns to infer assembly processes that structure ant communities in coastal areas. Specifically, the following hypotheses are tested: (1) coastal systems support lower ant diversity due to the unsuitable environment; (2) species living near the seashore are a subset of those exist near inland; (3) deterministic processes are …
Why Black Homeowners Are More Likely To Be Caribbean-American Than African-American In New York: A Theory Of How Early West Indian Migrants Broke Racial Cartels In Housing, Eleanor Marie Brown
Why Black Homeowners Are More Likely To Be Caribbean-American Than African-American In New York: A Theory Of How Early West Indian Migrants Broke Racial Cartels In Housing, Eleanor Marie Brown
GW Law Faculty Publications & Other Works
Why are the black brownstone owners in Harlem and Brooklyn disproportionately West Indian? The landlords, West Indian-American? The tenants African-American? These are tough questions. For students of housing discrimination, West Indian Americans have long presented a quandary. If it is reasonable to assume that racial exclusions are being consistently applied to persons who are dark-skinned, one would expect to find that housing discrimination has had similar effects on West Indian-Americans and African-Americans. Yet this is not the case: West Indian-Americans generally own and rent higher quality housing than African-Americans.
Moreover, these advantages began long ago. For example, when racial covenants, …
Can Mud (Silt And Clay) Concentration Be Used To Predict Soil Organic Carbon Content Within Seagrass Ecosystems?, Oscar Serrano, Paul Lavery, Carlos Duarte, Gary A. Kendrick, Antoni M. Calfat, P. H. York, Andy D. Steven, Peter I. Macreadie
Can Mud (Silt And Clay) Concentration Be Used To Predict Soil Organic Carbon Content Within Seagrass Ecosystems?, Oscar Serrano, Paul Lavery, Carlos Duarte, Gary A. Kendrick, Antoni M. Calfat, P. H. York, Andy D. Steven, Peter I. Macreadie
Research outputs 2014 to 2021
The emerging field of blue carbon science is seeking cost-effective ways to estimate the organic carbon content of soils that are bound by coastal vegetated ecosystems. Organic carbon (Corg) content in terrestrial soils and marine sediments has been correlated with mud content (i.e., silt and clay, particle sizes < 63 µm), however, empirical tests of this theory are lacking for coastal vegetated ecosystems. Here, we compiled data (n = 1345) on the relationship between Corg and mud contents in seagrass ecosystems (79 cores) and adjacent bare sediments (21 cores) to address whether mud can be used to predict soil Corg content. We also combined these data with the δ13C signatures of the soil …
Determining The Effects Of Non-Native Brook Stickleback (Cualea Inconstans) On The Lentic Systems At Turnbull National Wildlife Refuge, Cheney, Wa, Jenae N. Yri
EWU Masters Thesis Collection
"The introduction of non-native fishes can cause trophic cascades in freshwater habitats; these effects may be amplified in ephemeral/temporary habitats. Non-native brook stickleback fishes (Culaea inconstans) were first documented on the Turnbull National Wildlife Refuge (WA) in 1999 and are now present in many portions of the refuge. The consequences of their presence on the refuge's perennial/permanent and temporary habitats are poorly understood. Therefore, the purpose of my project was to determine if brook stickleback are affecting habitat characteristics that are important for waterfowl nesting success. From April-August 2015, I compared the macro invertebrate and macrophyte community characteristics, fingernail clam …
Invertebrate Drift In The Upper Columbia River With Implications For Young-Of-The-Year White Sturgeon, Ryan W. Reihart
Invertebrate Drift In The Upper Columbia River With Implications For Young-Of-The-Year White Sturgeon, Ryan W. Reihart
EWU Masters Thesis Collection
"White sturgeon (Acipenser transmontanus) in the upper Columbia River have been in decline for over 60 years and are listed as critically endangered by the International Union for Conservation of Nature. Annual spawning produces dispersing larvae; however, recruitment into the juvenile age class has not occurred since the early 1970s. One hypothesis to explain this failure in recruitment is that larvae may not find adequate prey. Little is known about diet and prey availability for white sturgeon larvae, especially in Lake Roosevelt, a reservoir of the Columbia River. The Spokane Tribe of Indians collected littoral and mid-channel benthic drift samples …
From Seed To Sky: Impacts Of Explosive Compounds On Vegetation Across Spatial And Developmental Scales, Stephen M. Via
From Seed To Sky: Impacts Of Explosive Compounds On Vegetation Across Spatial And Developmental Scales, Stephen M. Via
Theses and Dissertations
Explosive compounds are broadly distributed across the globe as a result of nearly two centuries of munitions use in warfare and military activities. Two explosive compounds have seen disproportionate use; RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) and TNT (2-methyl- 1,3,5-trinitrobenzene), being the most commonly found explosives in the environment. The effects of explosives on biota have been studied in great detail; however, there is a general lack of understanding with regard to broader ecological impacts of these contaminants. My dissertation objective was to follow the impacts of explosive compounds on vegetation across scales. Impacts on vegetation at the species scale alter community composition via …
Dung Beetles (Coleoptera: Scarabaeidae) Utilizing Water Buffalo Dungon The Black Sea Coast Of Turkey, Gregory Thomas Sullivan, Sebahat Sullivan, Jean-Pierre Lumaret, Greg Baxter, Myron Zalucki, Ünal Zeybekoğlu
Dung Beetles (Coleoptera: Scarabaeidae) Utilizing Water Buffalo Dungon The Black Sea Coast Of Turkey, Gregory Thomas Sullivan, Sebahat Sullivan, Jean-Pierre Lumaret, Greg Baxter, Myron Zalucki, Ünal Zeybekoğlu
Turkish Journal of Zoology
There have been few ecological studies of dung beetles (Coleoptera: Scarabaeidae) from the Black Sea Region of Turkey. In the RAMSAR-listed wetland system of the Kızılırmak Delta of Turkey's central Black Sea coast, seasonal grazing by domesticated water buffalo produces plentiful dung from April to November. Twenty-three species of dung beetles from 13 genera of Aphodiinae and 4 genera of Scarabaeinae were collected from their dung on two adjacent soil types in 2013. The species were from three functional groups, namely dung dwelling (12), tunneling (10), and ball rolling (1). Thirteen and fourteen species were collected in spring/summer and autumn, …
Marine Ecoregion And Deepwater Horizon Oil Spill Affect Recruitment And Population Structure Of A Salt Marsh Snail, Steven C. Pennings, Scott Zengel, Jacob Oehrig, Merryl Alber, T. Dale Bishop, Donald R. Deis, Donna Devlin, A. Randall Hughes, John J. Hutchens, Jr., Whitney M. Kiehn, Caroline R. Mcfarlin, Clay L. Montague, Sean P. Powers, C. Edward Proffitt, Nicholle Rutherford, Camille L. Stagg, Keith Walters
Marine Ecoregion And Deepwater Horizon Oil Spill Affect Recruitment And Population Structure Of A Salt Marsh Snail, Steven C. Pennings, Scott Zengel, Jacob Oehrig, Merryl Alber, T. Dale Bishop, Donald R. Deis, Donna Devlin, A. Randall Hughes, John J. Hutchens, Jr., Whitney M. Kiehn, Caroline R. Mcfarlin, Clay L. Montague, Sean P. Powers, C. Edward Proffitt, Nicholle Rutherford, Camille L. Stagg, Keith Walters
University Faculty and Staff Publications
Marine species with planktonic larvae often have high spatial and temporal variation in recruitment that leads to subsequent variation in the ecology of benthic adults. Using a combination of published and unpublished data, we compared the population structure of the salt marsh snail, Littoraria irrorata, between the South Atlantic Bight and the Gulf Coast of the United States to infer geographic differences in recruitment and to test the hypothesis that the Deepwater Horizon oil spill led to widespread recruitment failure of L. irrorata in Louisiana in 2010. Size-frequency distributions in both ecoregions were bimodal, with troughs in the distributions consistent …
Nutritional Effects On Reproductive Performance Of Captiveadult Female Coyotes (Canis Latrans), Eric M. Gese, Beth M. Roberts, Frederick F. Knowlton
Nutritional Effects On Reproductive Performance Of Captiveadult Female Coyotes (Canis Latrans), Eric M. Gese, Beth M. Roberts, Frederick F. Knowlton
United States Department of Agriculture Wildlife Services: Staff Publications
Interactions between animals and their environment are fundamental to ecological research. Field studies of coyote (Canis latrans) reproductive performance suggest mean litter size changes in response to prey abundance. However, this relationship has been assessed primarily by using carcasses collected from trappers. The objective of this study was to assess whether nutritional manipulation prior to mating affected reproduction in adult female coyotes. We examined the effects of caloric restriction during the 7 months prior to estrus on the reproductive rates of 11 captive female coyotes and the subsequent initial survival of pups through two reproductive cycles. This was …
Limited Transmission Of Emergent H7n9 Influenza A Virus In A Simulated Live Animal Market: Do Chickens Pose The Principal Transmission Threat?, Angela Bosco-Lauth, Richard A. Bowen, J. Jeffrey Root
Limited Transmission Of Emergent H7n9 Influenza A Virus In A Simulated Live Animal Market: Do Chickens Pose The Principal Transmission Threat?, Angela Bosco-Lauth, Richard A. Bowen, J. Jeffrey Root
United States Department of Agriculture Wildlife Services: Staff Publications
Emergent H7N9 influenza A virus has caused multiple public health and financial hardships. While some epidemiological studies have recognized infected chickens as an important bridge for human infections, the generality of this observation, the minimum infectious dose, and the shedding potential of chickens have received conflicting results. We experimentally tested the ability of domestic chickens (Gallus gallus domesticus) to transmit H7N9 to co-housed chickens and to several other animal species in an experimental live animal market. Results indicated that an infected chicken failed to initiate viral shedding of H7N9 to naIve co-housed chickens. The infected chicken did, however, …
Patuxent’S Long-Term Research On Wolves, David L. Mech
Patuxent’S Long-Term Research On Wolves, David L. Mech
United States Geological Survey: Staff Publications
The gray wolf (Canis lupus) was one of the first species placed on the Endangered Species List in 1967. The Endangered Species Act of 1973 legally protected the wolf along with other listed species. Patuxent Wildlife Research Center (Patuxent) in Laurel, MD, began its Endangered Wildlife Program in 1966, and U.S. Fish and Wildlife Service (USFWS) biologist Ray Erickson was assigned to lead it. In 1973, I was transferred to the program from Region 3 of the USFWS, having been employed there since 1969 to study wolves in Minnesota. Endangered Species Act protection of the wolf fostered its …
A Multiple-Objective Framework For Sustainable Forest Management Under Uncertainty In The U.S. Central Hardwood Region, Wu Ma
Graduate Theses, Dissertations, and Problem Reports (ETD)
Despite the economic and ecological significance of oak-hickory forests in the Central Hardwood Region (CHR), major challenges are faced by both private and public landowners and policymakers due to the lack of reliable growth and yield models as well as the absence of useful tools for multi-criteria management. Moreover, the effects of climate change and fire disturbance on these forests and their management are largely unknown.;The second chapter of the dissertation is directed towards the study of the community and population structure of CHR forests under climate change and associated changes of fire regimes. The Central Hardwood Region of the …
Migratory Genomics Of Lake Sturgeon, Justine Whitaker
Migratory Genomics Of Lake Sturgeon, Justine Whitaker
Graduate Theses, Dissertations, and Problem Reports (ETD)
Lake sturgeon are large, freshwater fish and the only species of sturgeon native to the Great Lakes. Their historic range extends from the Hudson Bay, down through the Great Lakes and into the Mississippi River basin. In the early 1900's, sturgeon became a valuable fishery and were soon overfished for both meat and caviar. This, in combination with damming, pollution, and habitat degradation, caused a drastic decline in their population. Some populations were extirpated, while others have been reduced to 1% of their historic population size (Auer, 1996). The St. Clair-Detroit River System (SCDRS) hosts one of the largest lake …