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Articles 1 - 15 of 15
Full-Text Articles in Life Sciences
Impacts Of Eutrophication On Benthic Invertebrates & Fish Prey Of Birds In Farmington And Bear River Bays Of Great Salt Lake, Trip Armstrong, Wayne A. Wurtsbaugh
Impacts Of Eutrophication On Benthic Invertebrates & Fish Prey Of Birds In Farmington And Bear River Bays Of Great Salt Lake, Trip Armstrong, Wayne A. Wurtsbaugh
Watershed Sciences Faculty Publications
Farmington Bay’s watershed is primarily in the heavily populated metropolitan Salt Lake City, and consequently, it receives approximately 50% of its inflow from nutrient‐ rich wastewater releases. The high nutrient loads make it eutrophic and reducing the loading has been suggested to reduce blooms of toxic cyanobacteria. However, the bay also supports thousands of wading birds and waterfowl, and there is concern that reducing nutrient inflows might reduce the production of bottom‐dwelling insects and other invertebrates that the birds rely upon.
Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith
Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith
Fall Showcase for Research and Creative Inquiry
Bird diversity and abundance in Farmville, Virginia. Sampling twice a day, four days a week.
Demographic Assessment Of The Triploid Parthenogenetic Lizard Aspidoscelis Neotesselatus At The Northern Edge Of Its Range, Lise M. Aubry, Douglas Eifler, Kaera Utsumi, Susannah S. French
Demographic Assessment Of The Triploid Parthenogenetic Lizard Aspidoscelis Neotesselatus At The Northern Edge Of Its Range, Lise M. Aubry, Douglas Eifler, Kaera Utsumi, Susannah S. French
Biology Faculty Publications
Aspidoscelis neotesselatus (Colorado Checkered Whiptail) is a hybrid-derived triploid parthenogenetic lizard with a natural range overlapping with six counties in southeastern Colorado, USA. It has also become established by anthropogenic causation in Grant County, Washington State, approximately 1,600 km northwest of its range in Colorado. Large parts of its natural range are within military reservations. Reduced genetic variation in all-female species makes them especially susceptible to environmental disturbances, such as military activities. At Fort Carson (FC), we estimated an abundance index via a catch-per-unit estimator, weekly survival using Cormack-Jolly-Seber models, and body condition and clutch size as indicators of population …
Introduction To Sorghum Paper Production, Zachary Christman
Introduction To Sorghum Paper Production, Zachary Christman
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Sorghum is a tall grass used for many commercial products such as fodder and syrup. The 10 to 15 feet stalk of the plant has lower lignin than wood and provides a fiber length of 2.31 mm in the outer covering and 1.38 mm for the leaf. Sorghum fiber makes a high quality, strong paper suitable for printing, packaging and paperboard.
The Assessment Of Predictor Variables For Hard Tick Abundance In Southwestern Missouri, Casey L. Adkins
The Assessment Of Predictor Variables For Hard Tick Abundance In Southwestern Missouri, Casey L. Adkins
MSU Graduate Theses
The risk of tick-borne infection is increasing across the United States, and in Missouri, ticks are expanding into novel regions due to climate change, habitat fragmentation, and biodiversity loss. Regions in which ticks are encroaching experience novel vectors for lineage associated pathogens. Novel tick detection can be low due to sampling practices targeting known ticks, which can lead to unreliable distribution maps and poor predictive distribution models. Such models should account for biotic factors, abiotic factors, and their interactions to provide a dynamic view of their impact on tick abundance and identify variables that can serve as indicators. Further, a …
Amphibian And Reptile Community Responses To Forest And Riparian Disturbance, Jacquelyn Christine Guzy
Amphibian And Reptile Community Responses To Forest And Riparian Disturbance, Jacquelyn Christine Guzy
Graduate Theses and Dissertations
Riparian zones are transitional, semi-terrestrial areas regularly influenced by freshwater. These areas serve as dispersal corridors for many animal and plant species and ultimately function as important reservoirs of biodiversity in altered landscapes. While much of the riparian habitat in the United States has been affected by anthropogenic activities, management actions may mitigate potentially negative influences of these activities. For example, Streamside Management Zones (i.e., riparian buffers; SMZs) are commonly implemented within managed forests to protect water quality, but may also provide habitat for riparian-associated wildlife. Yet, little research has rigorously addressed the value of SMZs for wildlife, particularly cryptic …
Determining How Risk Effects Predator-Prey Interactions Of Marine Communities In The Nearshore Environment Of South Bimini, The Bahamas, Kendall Brancart
Determining How Risk Effects Predator-Prey Interactions Of Marine Communities In The Nearshore Environment Of South Bimini, The Bahamas, Kendall Brancart
HCNSO Student Theses and Dissertations
Predators often have strong top-down effects on ecosystems and are considered a priority for conservation and management. Predator activity can influence prey distribution, abundance, and foraging behaviors and are likely to influence habitat by impacting ecological and environmental characteristics as well as presence of competitor species. There are knowledge gaps of the functional diversity of fish assemblages, non-consumptive predator effects, and environmental effects on fish assemblages. With this study, effects of top marine predators, such as sharks and great barracuda, on diversity and abundance of prey communities were examined in putative low (north side of South Bimini = lagoon) and …
Quantifying The Effects Of Trail Traffic On Nearby Plant Communities And Implications For Trail Users, Eli Robinson, Lein Turley
Quantifying The Effects Of Trail Traffic On Nearby Plant Communities And Implications For Trail Users, Eli Robinson, Lein Turley
Achieve
Human activities, such as hiking and biking, have been shown to reduce the height, coverage, and species richness of vegetation along trail systems. Yet, research on the effects of such activities on Tennessee trail systems is limited. The goal of this study is twofold. First, it is to identify to what possible extent these activities along the White Oak Mountain trail system (Southern Adventist University) have on wildflower population abundance and diversity. Secondary, it is to discuss whether the mental health advantages of being outdoors outweigh possible adverse effects that human activity has on nature. Ten permanent quadrats were set …
Status Of The Plains Harvest Mouse (Reithrodontomys Montanus Griseus) In Eastern Nebraska, Keith Geluso, Greg D. Wright
Status Of The Plains Harvest Mouse (Reithrodontomys Montanus Griseus) In Eastern Nebraska, Keith Geluso, Greg D. Wright
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
In eastern Nebraska, current status of the Plains Harvest Mouse (Reithrodontomys montanus griseus) is not well understood. Infrequent captures during the last century have led to a paucity of information regarding this taxon, and some researchers postulate that its distribution has contracted in the state. In 2008, we conducted a field survey for R. m. griseus in eastern Nebraska, amassed prior specimen records, and examined most of the specimens for this subspecies from the state to better understand its distribution, natural history, and subspecific status. In our field efforts, we only captured a single individual despite …
Species Diversity Associated With Foundation Species In Temperate And Tropical Forests, Aaron M. Ellison, Hannah L. Buckley, Bradley S. Case, Dairon Cardenas, Álvaro J. Duque, James A. Lutz, Jonathan A. Myers, David A. Orwig, Jess K. Zimmerman
Species Diversity Associated With Foundation Species In Temperate And Tropical Forests, Aaron M. Ellison, Hannah L. Buckley, Bradley S. Case, Dairon Cardenas, Álvaro J. Duque, James A. Lutz, Jonathan A. Myers, David A. Orwig, Jess K. Zimmerman
Ecology Center Publications
Foundation species define and structure ecological communities but are difficult to identify before they are declining. Yet, their defining role in ecosystems suggests they should be a high priority for protection and management while they are still common and abundant. We used comparative analyses of six large forest dynamics plots spanning a temperate-to-tropical gradient in the Western Hemisphere to identify statistical “fingerprints” of potential foundation species based on their size-frequency and abundance-diameter distributions, and their spatial association with five measures of diversity of associated woody plant species. Potential foundation species are outliers from the common “reverse-J” size-frequency distribution, and have …
Habitat‐Dependent Occupancy And Movement In A Migrant Songbird Highlights The Importance Of Mangroves And Forested Lagoons In Panama And Colombia, Lesley Bulluck, Elizabeth Ames, Nicholas Bayly, Jessie Reese, Cathy Viverette, James Wright, Angela Caguazango, Christopher Tonra
Habitat‐Dependent Occupancy And Movement In A Migrant Songbird Highlights The Importance Of Mangroves And Forested Lagoons In Panama And Colombia, Lesley Bulluck, Elizabeth Ames, Nicholas Bayly, Jessie Reese, Cathy Viverette, James Wright, Angela Caguazango, Christopher Tonra
Environmental Studies Publications
Climate change is predicted to impact tropical mangrove forests due to decreased rainfall, sea‐level rise, and increased seasonality of flooding. Such changes are likely to influence habitat quality for migratory songbirds occupying mangrove wetlands during the tropical dry season. Overwintering habitat quality is known to be associated with fitness in migratory songbirds, yet studies have focused primarily on territorial species. Little is known about the ecology of nonterritorial species that may display more complex movement patterns within and among habitats of differing quality. In this study, we assess within‐season survival and movement at two spatio‐temporal scales of a nonterritorial overwintering …
Methods For Estimating Mountain Goat Occupancy And Abundance, Molly Mcdevitt
Methods For Estimating Mountain Goat Occupancy And Abundance, Molly Mcdevitt
Graduate Student Theses, Dissertations, & Professional Papers
Abundance and occupancy are two parameters of central interest to the field of ecology. Furthermore, accurate (both precise and unbiased) estimates are key pieces to the puzzle of effective wildlife management decision-making. While there exist a variety of sampling techniques and statistical models for effectively estimating population parameters for frequently encountered and large mammals, methods for sampling unmarked and rare species are few and far between. The first step to acquiring usable parameter estimates is through the use of sampling theory and incorporation of probabilistic sampling designs to collect count-data and occurrence-data. Often, it is assumed that probabilistic sampling designs …
Adult Atlantic Sturgeon Population Dynamics In The York River, Virginia, Jason E. Kahn
Adult Atlantic Sturgeon Population Dynamics In The York River, Virginia, Jason E. Kahn
Graduate Theses, Dissertations, and Problem Reports
Sturgeon first appear in the fossil record in the Triassic Period just over 200 million years ago and are among the most primitive of the bony fishes. Despite their large size and historic presence along the East Coast, Atlantic sturgeon were not targeted for their meat and caviar as a commercial fishery until 1880. By 1905 they had declined to less than one percent of their pre-fishing abundance but the fishery continued. Prior to 1980, there had been very little research on Atlantic sturgeon, primarily limited to documenting landing location and poundage, maximum longevity, or weight of eggs per fish. …
Spatiotemporal Distribution And Population Structure Of Clibanarius Symmetricus (Randall, 1840) (Crustacea, Diogenidae) In An Amazon Estuary, Ana Carolina Melo Rodrigues, Jussara Moretto Martinelli-Lemos
Spatiotemporal Distribution And Population Structure Of Clibanarius Symmetricus (Randall, 1840) (Crustacea, Diogenidae) In An Amazon Estuary, Ana Carolina Melo Rodrigues, Jussara Moretto Martinelli-Lemos
Turkish Journal of Zoology
Rocky outcrops in the intertidal zones of estuaries often contain a highly diverse microbenthic community which includes the hermit crab, Clibanarius symmetricus, an abundant species on the equatorial Amazon coast. However, the ecology of this anomuran is poorly understood. Given this, the present study investigated the spatiotemporal distribution and structure of the C. symmetricus populations that inhabit the rocky outcrops of the Marapanim estuary in northern Brazil. Samples were collected monthly over a yearly cycle covering both the dry and rainy seasons in the upper and lower midlittoral zones during low tide. The distribution and abundance of C. symmetricus were …
Sponges Structure Water-Column Characteristics In Shallow Tropical Coastal Ecosystems, Marla M. Valentine, Mark J. Butler Iv
Sponges Structure Water-Column Characteristics In Shallow Tropical Coastal Ecosystems, Marla M. Valentine, Mark J. Butler Iv
Biological Sciences Faculty Publications
Sponges can have powerful effects on ecosystem processes in shallow tropical marine ecosystems. They drive benthic-pelagic coupling by filtering dissolved and particulate organic matter from the water column, alter water chemistry in association with their symbiotic microorganisms, and increase habitat structural complexity. Anthropogenic degradation of coastal waters is widespread and can reduce the density and diversity of foundation species such as sponges, potentially diminishing their contributions to ecosystem processes. We used a novel mesocosm design that minimized artifacts associated with traditional single-species and closed-system filtration experiments to examine the effects of water turnover and sponge biomass on water-column properties. Using …