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Articles 991 - 1020 of 3642
Full-Text Articles in Entire DC Network
Increased Dementia Mortality In West Virginia Counties With Mountaintop Removal Mining?, A. K. Salm, Michael J. Benson
Increased Dementia Mortality In West Virginia Counties With Mountaintop Removal Mining?, A. K. Salm, Michael J. Benson
Faculty & Staff Scholarship
(MTM), a practice that has been ongoing in some counties of West Virginia (WV) USA since the 1970s. PM inhalation has been linked to central nervous system pathophysiology, including cognitive decline and dementia. Here we compared county dementia mortality statistics in MTM vs. non-MTM WV counties over a period spanning 2001–2015. We found significantly elevated age-adjusted vascular or unspecified dementia mortality/100,000 population in WV MTM counties where, after adjusting for socioeconomic variables, dementia mortality was 15.60 (±3.14 Standard Error of the Mean (S.E.M.)) times higher than that of non-MTM counties. Further analyses with satellite imaging data revealed a highly significant …
Time-Activity Budgets Of Stiff-Tailed Ducks In Puerto Rico, Nickolas S. Goodman, Jack C. Eitniear, James T. Anderson
Time-Activity Budgets Of Stiff-Tailed Ducks In Puerto Rico, Nickolas S. Goodman, Jack C. Eitniear, James T. Anderson
Faculty & Staff Scholarship
Habitat loss and degradation have contributed to declining populations of stiff-tailed ducks including the migratory northern ruddy duck (Oxyura jamaicensis rubida), and non-migratory masked duck (Nomonyx dominicus) and West Indian ruddy duck (Oxyura j. jamaicensis). Studies collecting time-activity budgets on waterfowl can provide important insight into habitat use, behavior, and niche partitioning. Even though the northern ruddy duck and West Indian ruddy duck are recognized as the same species, we treated them separately to appraise possible ecological differences. We recorded 24-h time-activity budgets for masked ducks (n = 142), northern ruddy ducks ( …
A Prairie And Its People: Conflict And Cooperation. E. Frank Schramm, Joseph E.A. Alexis, The Amos Eager Family, The University Of Nebraska And Other Notable Owners Of Nine Mile Prairie And Its Environs, Jon H. Oberg
University of Nebraska State Museum: Staff and Affiliates, Publications
This study looks at the social history of individuals connected to a particular geographic quadrant -- Section 1 of Middle Creek precinct, Lancaster County, Nebraska. This an area famous for its natural history, as it is the home of Nine Mile Prairie. But the property owners in this section have a colorful history that encompasses the fields of sports, politics, academics, foreign wars, and crime. The study looks primarily at E. Frank Schramm, Joseph E.A. Alexis, and the Amos Eager family, who with other owners contributed importantly to the history and development of the City of Lincoln and the State …
Tree Presence And Species Identity Affect American Beaver Activity Along The Missouri River, Ashley M. Williams
Tree Presence And Species Identity Affect American Beaver Activity Along The Missouri River, Ashley M. Williams
Sustainable RIVER
No abstract provided.
Effects Of Insecticides On Amphibians, Lilian M. Heinzel
Effects Of Insecticides On Amphibians, Lilian M. Heinzel
Sustainable RIVER
No abstract provided.
Ethnohistorical Relationships Among American Indian Tribes & The Missouri River, Stormi Schroder
Ethnohistorical Relationships Among American Indian Tribes & The Missouri River, Stormi Schroder
Sustainable RIVER
No abstract provided.
New Life For Old Data: Compiling Global Diet Data Of Freshwater Fishes, Jacob Ridgway
New Life For Old Data: Compiling Global Diet Data Of Freshwater Fishes, Jacob Ridgway
Sustainable RIVER
No abstract provided.
Effects Of The Invasive Asian Shore Crab, Hemigrapsus Sanguineus, On New England Trophic Cascade: Diet And Predation, Madison Bradley
Effects Of The Invasive Asian Shore Crab, Hemigrapsus Sanguineus, On New England Trophic Cascade: Diet And Predation, Madison Bradley
Writing Across the Curriculum
Trophic cascades occur when the community structure is influenced by indirect effects of predation on the lower trophic levels. The trophic cascade can be disrupted when an invasive species is introduced. The Asian shore crab, Hemigrapsus sanguineus has invaded ecosystems in New England and we predict this invasion will negatively affect the classic New England trophic cascade. By the predation indirectly affecting lower trophic levels, H. sanguineus can influence the community structure and diversity at the lower levels. To understand the trophic cascade, we manipulated the food source and competitors in four different mini-ecosystems. By introducing H. sanguineus into an …
A New Site Index Model For Intensively Managed Loblolly Pine (Pinus Taeda) Plantations In The West Gulf Coastal Plain, Kynda R. Trim, Dean W. Coble, Yuhi Weng, Jeremy P. Stovall, I-Kuai Hung
A New Site Index Model For Intensively Managed Loblolly Pine (Pinus Taeda) Plantations In The West Gulf Coastal Plain, Kynda R. Trim, Dean W. Coble, Yuhi Weng, Jeremy P. Stovall, I-Kuai Hung
Faculty Publications
Site index (SI) estimation for loblolly pine (Pinus taeda L.) plantations is important for the successful management of this important commercial tree species in the West Gulf Coastal Plain of the United States. This study evaluated various SI models for intensively managed loblolly plantations in the West Gulf Coastal Plain using data collected from permanent plots installed in intensively managed loblolly pine plantations across east Texas and western Louisiana. Six commonly used SI models (Cieszewski GADA model, both Chapman-Richards ADA and GADA models, both Schumacher ADA and GADA models, and McDill-Amateis GADA model) were fit to the data and compared. …
Estimating The Use Of Public Lands: Integrated Modeling Of Open Populations With Convolution Likelihood Ecological Abundance Regression, Lutz F. Gruber, Erica F. Stuber, Joseph J. Fontaine
Estimating The Use Of Public Lands: Integrated Modeling Of Open Populations With Convolution Likelihood Ecological Abundance Regression, Lutz F. Gruber, Erica F. Stuber, Joseph J. Fontaine
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
We present an integrated open population model where the population dynamics are defined by a differential equation, and the related statistical model utilizes a Poisson binomial convolution likelihood. Key advantages of the proposed approach over existing open population models include the flexibility to predict related, but unobserved quantities such as total immigration or emigration over a specified time period, and more computationally efficient posterior simulation by elimination of the need to explicitly simulate latent immigration and emigration. The viability of the proposed method is shown in an in-depth analysis of outdoor recreation participation on public lands, where the surveyed populations …
Floristic Quality Assessments Of Remnant Natural Areas In The Greater Grand Rapids, Michigan Region: Evaluating Botanical Change Since The 1890s, Alan W. Stockdale, Garrett Crow, David P. Warners
Floristic Quality Assessments Of Remnant Natural Areas In The Greater Grand Rapids, Michigan Region: Evaluating Botanical Change Since The 1890s, Alan W. Stockdale, Garrett Crow, David P. Warners
Faculty and Professional Research
In 1901, Emma J. Cole, a beloved high school teacher and distinguished botanist, published Grand Rapids Flora. Cole’s floristic inventory remains the most comprehensive botanical study of the greater Grand Rapids, Michigan region, even though this area has experienced significant land- scape alterations since her publication. To address this knowledge gap, in 2014 we embarked on a multiple-year project aimed to discover and reassess the sites Cole described, as well as to catalog other natural remnant locations within the Grand Rapids area. This paper reports botanical invento- ries that were completed at eight sites within Kent County during 2015 and …
Michigan Academician, Volume 46, Issue 1
Five-Year Response Of Spontaneous Vegetation To Removal Of Invasive Amur Bush Honeysuckle Along An Urban Creek, Rebecca W. Dolan, Kelly H. Brown
Five-Year Response Of Spontaneous Vegetation To Removal Of Invasive Amur Bush Honeysuckle Along An Urban Creek, Rebecca W. Dolan, Kelly H. Brown
Scholarship and Professional Work - LAS
Non-native invasive species have major impacts on landscapes worldwide, but their effects in urban areas are not well documented. We quantified the response of naturally regenerating vegetation along an urban creek to removal of the invasive shrub Lonicera maackii (Amur Bush Honeysuckle). Over the 5-year study, species richness more than doubled. Most new plants were native, disturbance-adapted, early successional species. Trend analysis of function traits revealed annuals that rely on seed dispersal by wind or externally on animals were significantly overrepresented among new plants in comparison to their proportion in the countywide species pool. Increased species richness did not result …
A Field-Based Survey Of Fluorescence In Tropical Tree Frogs Using An Led Uv-B Flashlight, Michelle E. Thompson, Ralph Saporito, Diego H. Ruiz-Valderrama4, Guido F. Medina-Rangel, Maureen A. Donnelly
A Field-Based Survey Of Fluorescence In Tropical Tree Frogs Using An Led Uv-B Flashlight, Michelle E. Thompson, Ralph Saporito, Diego H. Ruiz-Valderrama4, Guido F. Medina-Rangel, Maureen A. Donnelly
2019 Faculty Bibliography
No abstract provided.
The Trichoptera Of Panama X. The Quebrada Rambala Drainage, With Description Of 19 New Species Of Microcaddisflies (Trichoptera: Hydroptilidae), Steven C. Harris, Brian J. Armitage
The Trichoptera Of Panama X. The Quebrada Rambala Drainage, With Description Of 19 New Species Of Microcaddisflies (Trichoptera: Hydroptilidae), Steven C. Harris, Brian J. Armitage
Insecta Mundi
The Quebrada Rambala drainage is found immediately south and south-southeast of the town of Chiriqui Grande and east of Rambala on the Caribbean coast. It is one of two tributaries of the Rio Margarita watershed, a small, lowland drainage with elevations up to 180 m. During the 2014-2017 period, collections of caddisflies (Insecta: Trichoptera), employing both UV-light and Malaise traps, were made at two locations on Quebrada Rambala proper, and four locations on its unnamed tributary, all on a land area of approximately 1 ha. As a result, 127 species of caddisflies were identified, including 59 species of microcaddisflies. A …
Effects Of Invasive Trees On Native Floodplain Forest Vegetation & Breeding Bird, Jacob Myers
Effects Of Invasive Trees On Native Floodplain Forest Vegetation & Breeding Bird, Jacob Myers
Sustainable RIVER
No abstract provided.
A Changed River's Effects On Native Turtle Distribution, Marshall Kim
A Changed River's Effects On Native Turtle Distribution, Marshall Kim
Sustainable RIVER
No abstract provided.
Suspended Sediment Contributions Of Nebraska Tributaries Along The 59-Mile, Nathan Cardona
Suspended Sediment Contributions Of Nebraska Tributaries Along The 59-Mile, Nathan Cardona
Sustainable RIVER
No abstract provided.
The Importance Of Aquatic Insect-Derived Missouri River, Katy A. Mccarthy
The Importance Of Aquatic Insect-Derived Missouri River, Katy A. Mccarthy
Sustainable RIVER
No abstract provided.
Perceptions Of Multifunctional Landscapes Along The Missouri National Recreational River, Ann Mcgehrin
Perceptions Of Multifunctional Landscapes Along The Missouri National Recreational River, Ann Mcgehrin
Sustainable RIVER
No abstract provided.
Energy Content Of Seeds Of Texas Doveweed (Croton Texensis) From The Diet Of Mourning Doves (Zenaida Macroura) From Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Collin S. Deen, Dixie Lozano-Lopez, Emily R. Neilson, Taytumn R. Schlegel-Ridgway
Energy Content Of Seeds Of Texas Doveweed (Croton Texensis) From The Diet Of Mourning Doves (Zenaida Macroura) From Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Collin S. Deen, Dixie Lozano-Lopez, Emily R. Neilson, Taytumn R. Schlegel-Ridgway
Journal of the Arkansas Academy of Science
We analyzed the energy content of seeds of Texas doveweed (Croton texensis) obtained from the crops of mourning doves (Zenaida macroura) collected from plains-mesa sand-scrub habitat in Eddy and Lea counties, New Mexico. Seeds were removed from crops and dried for 48 hours at 60°C to remove moisture and to standardize masses. Seeds were then analyzed for gross caloric value (i.e., energy content) in an oxygen bomb calorimeter. Energy content of seeds of Texas doveweed was greater than many seeds previously reported from the diet of mourning doves.
De Novo Development And Characterization Of Tetranucleotide Microsatellite Loci Markers From A Southeastern Population Of The House Finch (Haemorhous Mexicanus), Edgar E. Sanchez, J Dylan Maddox, Douglas G. Barron
De Novo Development And Characterization Of Tetranucleotide Microsatellite Loci Markers From A Southeastern Population Of The House Finch (Haemorhous Mexicanus), Edgar E. Sanchez, J Dylan Maddox, Douglas G. Barron
Journal of the Arkansas Academy of Science
Microsatellites are short tandem repeats (e.g. TAGATAGA) of base pairs in a species’ genome. High mutation rates in these regions produce variation in the number of repeats across individuals that can be utilized to study patterns of population- and landscape-level genetics and to determine parentage genetically. In this project our objective was to develop microsatellite markers for the House Finch, Haemorhous mexicanus. This species has become one of the most well-studied species of songbirds due to its unique geographical, evolutionary, and epidemiological history. Using mist-nets we captured birds on the Arkansas Tech University campus and collected blood samples to …
Role Of Managed Marine Areas On The Diversity And Individual Responses Of Rocky Intertidal Shore Grazers In Central Chile, Kathy Liu
Scripps Senior Theses
Many different types of marine benthic herbivores or “grazers” inhabit coastal intertidal zones and play a crucial role in inter- and shallow subtidal ecosystems. Chile has one of the most diverse intertidal zones, but many intertidal grazers are exploited for human consumption. Marine protected areas (MPAs) and marine management and exploitation areas (MEAs) are promising tools for Chile to combat over exploitation of these grazer and other marine resources. This study surveyed the impact of sites with contrasting management on the diversity and abundance of all intertidal grazers and their impact on the size frequency and shell length-body weight allometry …
Effects Of Thermal Stress On Amount, Composition, And Antibacterial Properties Of Coral Mucus, Rachel M. Wright, Marie E. Strader, Heather M. Genuise, Mikhail Matz
Effects Of Thermal Stress On Amount, Composition, And Antibacterial Properties Of Coral Mucus, Rachel M. Wright, Marie E. Strader, Heather M. Genuise, Mikhail Matz
Biological Sciences: Faculty Publications
Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA, United States of America ABSTRACT The surface mucus layer of reef-building corals supports feeding, sediment clearing, and protection from pathogenic invaders. As much as half of the fixed carbon supplied by the corals' photosynthetic symbionts is incorporated into expelled mucus. It is therefore reasonable to expect that coral bleaching (disruption of the coralfialgal symbiosis) would affect mucus production. Since coral mucus serves as an important nutrient source for the entire reef community, this could have substantial ecosystemwide consequences. In this study, we examined the effects of heat …
Distribution, Hybridization, And Taxonomic Status Of Two-Lined Salamanders (Eurycea Bislineata Complex) In Virginia And West Virginia, Paul W. Sattler, Timothy R. Brophy
Distribution, Hybridization, And Taxonomic Status Of Two-Lined Salamanders (Eurycea Bislineata Complex) In Virginia And West Virginia, Paul W. Sattler, Timothy R. Brophy
Faculty Publications and Presentations
We used three diagnostic protein markers to examine salamanders of the Eurycea bislineata complex at 80 localities in Virginia and West Virginia. Two groups were strongly differentiated and met at a narrow contact zone. Rare hybridization was observed as well as limited introgression up to 5 km north and 10 km south of the contact zone. At the contact zone, 1% F1, 2% F2, 32% backcross, and 66% parental genotypes were observed. This pattern of parapatric distribution with limited hybridization and introgression argues for the recognition of Eurycea bislineata and E. cirrigera as separate species.
Functional Analyses Of The Dna- And Rna-Binding Protein Spovg In Borrelia Burgdorferi, Christina R. Savage
Functional Analyses Of The Dna- And Rna-Binding Protein Spovg In Borrelia Burgdorferi, Christina R. Savage
Theses and Dissertations--Microbiology, Immunology, and Molecular Genetics
Borrelia burgdorferi, the causative agent of Lyme disease, exists in a defined enzootic cycle involving Ixodes scapularis ticks and various vertebrates. Humans can serve as an accidental host, if a tick colonized with B. burgdorferi happens to feed on a human. B. burgdorferi are also accidental pathogens: they do not make toxins, or destroy host tissue by other mechanisms. They merely transmit between vector and host to survive. In order to do this, they must effectively sense their current environment, and appropriately alter cellular processes. Understanding the regulatory mechanisms of how B. burgdorferi manages to do this has been …
Tribute From The Underworld : The Historical Ecology Of The Maya Postclassic Fish Trade With Isotopic Analysis Of Otoliths From MayapáN And Caye Coco, Jeffrey Michael Bryant
Tribute From The Underworld : The Historical Ecology Of The Maya Postclassic Fish Trade With Isotopic Analysis Of Otoliths From MayapáN And Caye Coco, Jeffrey Michael Bryant
Legacy Theses & Dissertations (2009 - 2024)
This dissertation investigates the Maya fish trade through the extensive analysis of fish otoliths (ear stones), from the Postclassic sites of Mayapán, and Caye Coco, and provides an initial foundation for the development of a historical ecology program. Through osteometry, thin-section microscopy of growth rings, and microscale stable isotope analysis (δC13 and δO18), a spectrum of data is produced to characterize the Postclassic fish trade. These data are used to illuminate themes of the seasonality of the fish harvest, diet, biodiversity, fish population demography, environmental change, sustainability, and resilience. The timing of a seasonal intensification of the harvest is viewed …
The Epiphytic Bryophyte Vegetation Of Kamilet Valley (Artvin, Turkey), Mevlüt Alataş, Nevzat Batan, Tülay Ezer
The Epiphytic Bryophyte Vegetation Of Kamilet Valley (Artvin, Turkey), Mevlüt Alataş, Nevzat Batan, Tülay Ezer
Turkish Journal of Botany
In this study, the vegetation of epiphytic bryophytes in the Kamilet Valley and its surroundings (Arhavi, Artvin) was investigated. The study area is located within the borders of the Eastern Black Sea Mountains and is one of the 122 important plant areas in Turkey. The investigation of epiphytic bryophyte communities was carried out in 2016 during different vegetation periods according to Braun-Blanquet?s phytosociological methodology. Phytosociological data obtained from 65 relevés were ordinated using detrended correspondence analysis (DECORANA) and classified using two-way indicator species analysis (TWINSPAN). Consequently, six epiphytic bryophyte communities new to Turkey were determined with TWINSPAN and DECORANA: Leucobryo-Tetraphidetum …
Nutlet Structures Of Subsection Fragiles Of The Genus Stachys (Lamiaceae) From Turkey And Their Systematic Applications, Mehmet Cengi̇z Karai̇smai̇loğlu, Özal Güner
Nutlet Structures Of Subsection Fragiles Of The Genus Stachys (Lamiaceae) From Turkey And Their Systematic Applications, Mehmet Cengi̇z Karai̇smai̇loğlu, Özal Güner
Turkish Journal of Botany
This paper includes the morphological and anatomical characters of the nutlets of 7 endemic species of the subsection Fragiles of the genus Stachys (Lamiaceae) from Turkey and the systematic significance of these characteristics, using one-way analysis of variance and cluster and principal component analyses. Morphological characters such as the dimensions, shapes, colors, and surfaces of the nutlets were studied using light and scanning electron microscopes. The structures and thicknesses of the pericarp and endosperm layers, as well as the sizes of the cotyledon in the nutlets, were anatomically studied. The outcomes revealed that the taxa varyfrom each other in terms …
Frank Beach Award Winner: Neuroendocrinology Of Group Living, Annaliese K. Beery
Frank Beach Award Winner: Neuroendocrinology Of Group Living, Annaliese K. Beery
Neuroscience: Faculty Publications
Why do members of some species live in groups while others are solitary? Group living (sociality) has often been studied from an evolutionary perspective, but less is known about the neurobiology of affiliation outside the realms of mating and parenting. Colonial species offer a valuable opportunity to study nonsexual affiliative behavior between adult peers. Meadow voles (Microtus pennsylvanicus) display environmentally induced variation in social behavior, maintaining exclusive territories in summer months, but living in social groups in winter. Research on peer relationships in female meadow voles demonstrates that these selective preferences are mediated differently than mate relationships in …