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Articles 6811 - 6840 of 12852
Full-Text Articles in Entire DC Network
The Gowanus Canal: Delving Into The Murky And Mysterious Waters Of Brooklyn’S Toxic Canal, Victoria L. Von Ancken
The Gowanus Canal: Delving Into The Murky And Mysterious Waters Of Brooklyn’S Toxic Canal, Victoria L. Von Ancken
Student Theses 2015-Present
Like many environmental issues we face today, the Gowanus Canal began as a hopeful tale. It was envisioned as a promising cargo transportation waterway in Brooklyn, New York. However, due to reckless planning with little thought for the future, the canal slowly began to have a negative effect on its surrounding landscape and community, as well as abandoning its initial purpose, and ultimately sitting stagnant in the neighborhood. Today, the canal is a large environmental problem we face and is in great need of cleanup. The canal is a prime example of a lack of planning and consequential detrimental effects …
Filter Feeding, Sam Boven
Filter Feeding, Sam Boven
Graduate School of Art Theses
This paper is an investigation of the mechanics of evolutionary processes and its methods. These investigations are representative of both a world view and a methodology of artistic production. I consider a central consideration of my current work to be the interaction of distinct components and the new experience that these interactions produce when pondered by a viewer. Evolution and the development of life is driven ever forward by the interactions between organisms, both as groups and individuals. By grouping these relationships into three categories: parasitism, predation, and symbiosis, I aim to provide a lens through which to consider both …
Ocean Acidification And Predator-Prey Relations: Correlating Disruption Of Predator Avoidance With Chemosensory Deficits, Alexandra Fw Sidun, William G. Wright
Ocean Acidification And Predator-Prey Relations: Correlating Disruption Of Predator Avoidance With Chemosensory Deficits, Alexandra Fw Sidun, William G. Wright
Student Scholar Symposium Abstracts and Posters
One of the most destructive effects of global climate change is the increased carbon sequestering and consequential acidification of our world’s oceans. The impacts of ocean acidification on marine organisms are still relatively unknown, especially effects on behavioral ecology. Avoiding predation has emerged from recent behavioral ecology literature as a critical feature in the life history of a wide array of animal species; experiments on marine fishes suggest acidic water compromises their predator-avoidance abilities. Recent assays in our lab suggest predator-induced behavior is reduced by weakly acidic water. These experiments do not address the potential factor of generalized malaise caused …
Connecting The Physiological And Behavioral Response To Heat Stress On A Warming Planet, Anastasia Kalyta
Connecting The Physiological And Behavioral Response To Heat Stress On A Warming Planet, Anastasia Kalyta
Student Scholar Symposium Abstracts and Posters
Intertidal communities are considered good models of the biological effects of climate change on ecosystems, as their resident organisms are subjected to heat spells during daytime low tides. The increasing heat exposure can elicit behavioral as well as physiological responses in intertidal organisms. We studied the relationship between these responses to heat stress in the blue-banded hermit crab, Pagurus samuelis, by inducing a “heat shock” with elevated water temperature of 29 °C for 2.5 h. The behavioral effect of heat-shock was quantified using a 30-minute feeding assay, measuring the mass of a standard squid pellet consumed by individual hermit crabs. …
Discrete But Variable Structure Of Animal Societies Leads To The False Perception Of A Social Continuum, Dustin R. Rubenstein, Carlos A. Botero, Eileen A. Lacey
Discrete But Variable Structure Of Animal Societies Leads To The False Perception Of A Social Continuum, Dustin R. Rubenstein, Carlos A. Botero, Eileen A. Lacey
Biology Faculty Research
Animal societies are typically divided into those in which reproduction within a group is monopolized by a single female versus those in which it is shared among multiple females. It remains controversial, however, whether these two forms of social structure represent distinct evolutionary outcomes or endpoints along a continuum of reproductive options. To address this issue and to determine whether vertebrates and insects exhibit the same patterns of variation in social structure, we examined the demographic and reproductive structures of 293 species of wasps, ants, birds and mammals. Using phylogenetically informed comparative analyses, we found strong evidence indicating that not …
Escape Strategy Of The Cockroach (Gromphadorhina Portentosa) To Heat And Looming Stimuli, Jiangda Ou
Escape Strategy Of The Cockroach (Gromphadorhina Portentosa) To Heat And Looming Stimuli, Jiangda Ou
Senior Honors Projects, 2010-2019
Escape responses to aversive stimuli have been observed in insects, including species of cricket, fly, locust, and cockroach. The goal of this study was to investigate the escape strategy of the Madagascar cockroach, Gromphadorhina portentosa. In regard to this species, Erickson and colleagues (2015) showed that electrical stimulation of both cerci and antennae together could generate an escape response. However, in other reports (Olsen and Triblehorn, 2014), it was observed that wind could not elicit the escape response. In this study, G. portentosa was stimulated by looming and heat stimuli. A 2.5’’ black ball approaching at 1 m/s was used …
Temperature Variability And Multiple Environmental Stressors: How Will Tadpole Performance Change With Our Climate?, Diana C. Macklem, Tracy A. G. Rittenhouse, Ashley M. Helton, Jason H. O'Connor, Jaron T. Kolek
Temperature Variability And Multiple Environmental Stressors: How Will Tadpole Performance Change With Our Climate?, Diana C. Macklem, Tracy A. G. Rittenhouse, Ashley M. Helton, Jason H. O'Connor, Jaron T. Kolek
University Scholar Projects
This project seeks to analyze how predicted changes in climate and its interactions with other environmental factors will influence tadpole growth and development. Our first study examined how the frequency and magnitude of temperature variability affect wood frog and gray tree frog tadpole performance. We found that performance responses to repeatedly fluctuating treatments did not differ significantly from constant temperatures held at the same mean for wood frog tadpoles. However, elevated mean temperatures of 26 degrees Celsius caused tadpoles to metamorphose early, suggesting a potential developmental threshold. We found that gray tree frog performance was affected by fluctuating temperature treatments, …
The Effect Of Soil Ph On The Integument Of Western Tiger Salamanders, Aaron Devine, Dennis M. Ferraro
The Effect Of Soil Ph On The Integument Of Western Tiger Salamanders, Aaron Devine, Dennis M. Ferraro
UCARE: Research Products
This study was done in an effort to better understand the multifaceted issues in amphibian decline, specifically within the eastern regions of Nebraska, to determine whether or not human-induced acid rain contributed to the decline. This is a heavily important topic of research as amphibians worldwide are declining related to many issues that stem from climate change and several other environmental issues of that nature. This study looked to use acidic pH within soil from western Nebraska to determine the reactionary impacts (primarily lesions) the western tiger salamander had after being subjected to it. It was found that pH did …
Next-Generation Sequencing Of A Multi-Drug Resistance Plasmid Captured From Stream Sediment, Kevin G. Libuit
Next-Generation Sequencing Of A Multi-Drug Resistance Plasmid Captured From Stream Sediment, Kevin G. Libuit
Masters Theses, 2010-2019
Plasmids in agriculturally-impacted bodies of water may play a significant role in the dissemination of antibiotic resistance. Previously, Erika Gehr, as part of her M.S. thesis work in our laboratory, captured environmental plasmids without cultivation of host bacteria from stream sediment into Escherichia coli. Individual plasmids were capable of conferring resistance to a surprising array of antibiotics including aminoglycosides and extended-spectrum β-lactams. In this study, we developed a method to sequence multi-drug resistance plasmids using both Oxford Nanopore MinION and Ion Torrent Personal Genome Machine sequencers. Plasmid pEG1-1 was sequenced on both platforms and a hybrid assembly utilizing data …
Plastic Pollution And The Global Throwaway Culture: Environmental Injustices Of Single-Use Plastic, Kristin L. Mcdermott
Plastic Pollution And The Global Throwaway Culture: Environmental Injustices Of Single-Use Plastic, Kristin L. Mcdermott
ENV 434 Environmental Justice
The global throwaway culture has created a cross-ecosystem plastic pollution injustice. The first to suffer this injustice will be the most vulnerable. Our oceans have become our dumpsters. The throwaway culture has created a disrespect of material goods that has turned the earth’s resources into rubbish after a single use. Eighty percent of the yearly 8 million tons of plastic that enter the ocean is single use plastic, such as plastic bottles, plastic shopping bags, or cigarette lighters.[1] Plastic has destroyed ecosystems, robbing impoverished communities of natural resources and of a healthy and safe living environment. First to suffer …
The Influence Of Beached Harmful Algal Blooms On Terrestrial Arthropods On The Shore Of Lake Erie, Nadejda Mirochnitchenko, Kevin E. Mccluney
The Influence Of Beached Harmful Algal Blooms On Terrestrial Arthropods On The Shore Of Lake Erie, Nadejda Mirochnitchenko, Kevin E. Mccluney
Honors Projects
Marine primary inputs, such as sea wrack and algae, offer a great niche for insects and other animals to exploit. The existence of a similar niche on the coast of lakes has received less attention. To complicate matters, many freshwater systems are seeing increases in proliferation of toxic and non-toxic cyanobacteria blooms. This study examined patterns in lake shore terrestrial arthropod abundance, diversity, and community composition across gradients of beached algae, with varying toxicity. We detected water microcystin effects on arthropod richness in survey three, beached material effects on Shannon’s Diversity in survey two, and water microcystin effects on the …
An Industrial Chemical Used In Coal-Washing Influences Plankton Communities In Freshwater Microcosms, Danielle Turner
An Industrial Chemical Used In Coal-Washing Influences Plankton Communities In Freshwater Microcosms, Danielle Turner
Honors College Theses
In 2014, 4-methylcyclohexane methanol (MCHM), an industrial chemical used to wash coal, contaminated drinking water in 300,000 homes in West Virginia, USA and raised concerns about toxicity to humans and freshwater ecosystems. The Centers for Disease Control and Prevention determined that a concentration of 1 ppm was safe for human exposure. Despite the concern for human consumption, it is important to determine if MCHM has negative effects on aquatic organisms in contaminated water, particularly plankton communities that comprise the base of freshwater food webs. I exposed freshwater plankton communities in microcosms to 0, 0.5, 1 or 3 ppm MCHM under …
Investigation Of The Enviromental Factors Associated With The Temporal Abundance Of Lutzomyia Anthophora On A Ranch Near Poth, Texas, Maha Alshhrany
Investigation Of The Enviromental Factors Associated With The Temporal Abundance Of Lutzomyia Anthophora On A Ranch Near Poth, Texas, Maha Alshhrany
Theses & Dissertations
Leishmaniasis is caused by infection with protozoan parasites within the genus Leismania transmitted by the bites of female sand flies within the genus Lutzomyia in the New World. This study investigated the seasonal abundance of sand flies and evaluated the correlation of temperature with abundance data. Sand flies were collected at the Garrison ranch near Poth, Texas (28° 57’ 10” N; 98° 7’ 28” W) from May in 2014 through October, 2015. Recorded highest abundance of sand flies in 2014 was in October, 2 females Lu.anthophora and 5 males Lu.anthophora were captured producing 0.58 sand flies /trap night, while, mean …
Brain Morphology Of Madtom Catfishes (Noturus) Reflects Their Ecology, Autumn Goble, David J. Eisenhour
Brain Morphology Of Madtom Catfishes (Noturus) Reflects Their Ecology, Autumn Goble, David J. Eisenhour
Celebration of Student Scholarship Poster Sessions Archive
No abstract provided.
Efficiency Of The Male Effect With Photostimulated Bucks Does Not Depend On Their Familiarity With Goats, A. L. Muñoz, M. Bedos, R. M. Aroña, J. A. Flores, H. Hernández, C. Moussu, Elodie F. Briefer, P. Chemineau, M. Keller, J. A. Delgadillo
Efficiency Of The Male Effect With Photostimulated Bucks Does Not Depend On Their Familiarity With Goats, A. L. Muñoz, M. Bedos, R. M. Aroña, J. A. Flores, H. Hernández, C. Moussu, Elodie F. Briefer, P. Chemineau, M. Keller, J. A. Delgadillo
Reproductive Behavior Collection
In ewes, the ovulatory response of females exposed to familiar rams is lower than the response of those exposed to novel ones. In goats, males rendered sexually active by exposure to long days are more efficient to induce ovulation in seasonal anestrous females than untreated males. Two experiments were conducted to determine 1) whether male goats remain familiar to females after 45 days of separation; and 2) whether photostimulated males are able to stimulate the sexual activity of females, independently of their familiarity with them. In Experiment 1, three groups of goats (n = 10 goats per group) were put …
Evaluation Of Alternative Strategies To Prevent Leopard Predation On Livestock Around Yala National Park, Sri Lanka, Sanjiv Fernando
Evaluation Of Alternative Strategies To Prevent Leopard Predation On Livestock Around Yala National Park, Sri Lanka, Sanjiv Fernando
Sustainability and Social Justice
In recent years, many livestock herders living near Yala National Park, Sri Lanka have reported livestock losses due to predation by leopards (Panthera pardus kotiya). Despite herders’ attempts to safeguard their cattle, livestock depredation remains an issue, sometimes causing herders to kill leopards in retaliation. In an effort to mitigate the human-leopard conflict, protective cattle enclosures made from steel pipes and mesh wire were introduced to prevent leopard attacks on cattle. This study aims to assess the severity of leopard predation on livestock, understand the methods used in retaliatory killings, examine the effectiveness of existing livestock protection methods, …
The End-Cretaceous Mass Extinction And The Deccan Traps Eruptions, Rebecca Teed
The End-Cretaceous Mass Extinction And The Deccan Traps Eruptions, Rebecca Teed
Earth and Environmental Sciences Faculty Publications
This handout focuses on the evidence for the theory that a series of flood-basalt eruptions in northern India caused the mass extinction at the end of the Cretaceous Period. The dinosaurs and about 75% of all marine invertebrate species and many other organisms died abruptly at this time. This is one of a set of four articles on possible causes of the Permian and Cretaceous mass extinctions that can be used to organize classroom debates or to have students compare and contrast the events and their causes.
Using Accelerometer Data To Remotely Assess Predation Activity Of Arctic Wolves, Heather Shipp
Using Accelerometer Data To Remotely Assess Predation Activity Of Arctic Wolves, Heather Shipp
Undergraduate Honors Capstone Projects
Arctic wolves (Canis lupus arctos) play an important role in ecosystems located in the far northern regions of the world; however, unlike the gray wolves in Yellowstone National Park, little information is available about High Arctic wolves and their impacts on prey populations. This research uses data received from two GPS radio-collared Arctic wolves located in the Fosheim Peninsula on Ellesmere Island. Each radio-collar was programmed to record a position every 30-60 minutes, as well as the wolfs activity movement (forwards - backwards and left - right), which was generated by an accelerometer housed within the radio-collar. This …
Hybridization, Population Genetic Structure And Gene Expression In The Genus Boechera, Martin Peter Schilling
Hybridization, Population Genetic Structure And Gene Expression In The Genus Boechera, Martin Peter Schilling
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
When we look at life on earth, we can see a lot of different life forms, but we still do not fully understand how these different life forms came to be and at which points in time these life forms began to be different enough from each other so we could call them by different names, or species. Some groups of species on earth, especially plants, seem to reproduce with each other, even though they are already very different from each other so that we call them different species. This process is called hybridization, and it can stir up the …
Nocturnal Foraging Enhanced By Enlarged Secondary Eyes In A Net-Casting Spider, Jay A. Stafstrom, Eileen A. Hebets
Nocturnal Foraging Enhanced By Enlarged Secondary Eyes In A Net-Casting Spider, Jay A. Stafstrom, Eileen A. Hebets
Eileen Hebets Publications
Animals that possess extreme sensory structures are predicted to have a related extreme behavioral function. This study focuses on one such extreme sensory structure—the posterior median eyes of the net-casting spider Deinopis spinosa. Although past research has implicated the importance of vision in the nocturnal foraging habits of Deinopis, no direct link between vision in the enlarged eyes and nocturnal foraging has yet been made. To directly test the hypothesis that the enlarged posterior median eyes facilitate visually based nocturnal prey capture, we conducted repeated-measures, visual occlusion trials in both natural and laboratory settings. Our results indicate that D. …
Assessment Of American White Pelican Predation And Reproductive Success Of Walleye In The Tamarac River, Mn, Jake Graham
Assessment Of American White Pelican Predation And Reproductive Success Of Walleye In The Tamarac River, Mn, Jake Graham
Biology Graduate Theses
The Tamarac River is a major tributary of the Red Lakes MN, which provides an economically important multispecies fishery. The river experiences spring spawning migrations of northern pike, walleye, and white suckers. However, limited data exists related to reproductive success of fishes in the river. Furthermore, in the previous decade large congregations of American white pelicans (AWPE) have been observed using the Tamarac River as a foraging ground each spring. Assessing reproductive success of fishes in the Tamarac River provides a more holistic understanding of fish ecology in the river and the importance of the Tamarac River to the Red …
The End-Cretaceous Mass Extinction And The Chicxulub Impact, Rebecca Teed
The End-Cretaceous Mass Extinction And The Chicxulub Impact, Rebecca Teed
Earth and Environmental Sciences Faculty Publications
This handout focuses on the evidence for the theory that a massive meteor impact off the coast of Mexico caused the mass extinction at the end of the Cretaceous Period. The dinosaurs and about 75% of all marine invertebrate species and many other organisms died abruptly at this time. It is part of a set of four articles on possible causes of the Permian and Cretaceous mass extinctions that can be used to organize classroom debates or to have students compare and contrast the events and their causes.
The End-Permian Mass Extinction And A Possible Massive Impact, Rebecca Teed
The End-Permian Mass Extinction And A Possible Massive Impact, Rebecca Teed
Earth and Environmental Sciences Faculty Publications
This handout examines the evidence for the theory that a massive meteor impact caused the mass extinction at the end of the Permian Period. This is the worst mass extinction known to geologists, and 90% or more of all species on Earth were wiped out. It is part of a set of four articles on possible causes of the Permian and Cretaceous mass extinctions that can be used to organize classroom debates or to have students compare and contrast the events and their causes.
The End-Permian Mass Extinction And The Siberian Traps Eruptions, Rebecca Teed
The End-Permian Mass Extinction And The Siberian Traps Eruptions, Rebecca Teed
Earth and Environmental Sciences Faculty Publications
This handout focuses on the evidence for the theory that a series of flood-basalt eruptions in Siberia caused the mass extinction at the end of the Permian Period. This is the worst mass extinction known to geologists, and 90% or more of all species on Earth were wiped out. It is part of a set of four articles on possible causes of the Permian and Cretaceous mass extinctions that can be used to organize classroom debates or to have students compare and contrast the events and their causes.
[Re]Visiting The Rime: A Case Study Of Adaptation As Process And Product With The Rime Of The Ancient Mariner, Sally Ferguson
[Re]Visiting The Rime: A Case Study Of Adaptation As Process And Product With The Rime Of The Ancient Mariner, Sally Ferguson
Graduate Theses and Dissertations
This thesis combines adaptation theory with ecology to examine Samuel Taylor Coleridge's Rime of the Ancient Mariner (1798) and its adaptations; it argues further combinations of adaptation with evolutionary theory and ecological ideas could allow for a better interpretation of many texts. The adaptation Rime of the Modern Mariner (2011) by Nick Hayes and the appropriation Perelandra (1943) by C.S. Lewis will also be present in individual chapters to examine the texts' interactions with each other as they evolve and how each work represents the combined theory.
Responses Of Semi-Aquatic Snakes To Drought, Philip Nicholas Vogrinc
Responses Of Semi-Aquatic Snakes To Drought, Philip Nicholas Vogrinc
Graduate Theses and Dissertations
Aquatic ecosystems and their associated wildlife are threatened by alteration in the frequency and intensity of precipitation events predicted to affect many regions as a consequence of global climate change. Semi-aquatic snakes serve important roles as predators and prey within aquatic ecosystems, yet little is known about the effects of drought on these species due to their secretive behavior. Long-term studies at an isolated wetland in South Carolina found that drought caused populations of banded watersnakes (Nerodia fasciata) and Florida green watersnakes (Nerodia floridana) to crash. Alternatively, black swamp snakes (Seminatrix pygaea) fared well, exhibiting a resistance strategy by aestivating …
Gaur (Bos Gaurus) Abundance, Distribution, And Habitat Use Patterns In Kuiburi National Park, Southwestern Thailand, Supatcharee Tanasarnpaiboon
Gaur (Bos Gaurus) Abundance, Distribution, And Habitat Use Patterns In Kuiburi National Park, Southwestern Thailand, Supatcharee Tanasarnpaiboon
School of Natural Resources: Dissertations, Theses, and Student Research
Population status of gaur (Bos gaurus), a wild cattle, in most habitats where they are present, is still unknown. As the use of camera traps in wildlife studies are widespread, I developed photographic individual identification procedures and utilized encounter histories of gaur individuals from camera trap data to estimate gaur abundance and density using the spatially explicit capture-recapture analysis. The study was conducted at Kuiburi National Park, southwestern Thailand, comprised of dry evergreen forest, moist evergreen forest, and man-modified secondary forest during November 2013- January 2015. I conducted 71 direct observations in a savannah-like habitat area to observe …
Risky Business: Tradeoffs Between Nutrition, Toxicity, And Predation By A Specialist Mammalian Herbivore, Jordan D. Nobler
Risky Business: Tradeoffs Between Nutrition, Toxicity, And Predation By A Specialist Mammalian Herbivore, Jordan D. Nobler
Boise State University Theses and Dissertations
Animals must balance many risks and rewards when using resources and selecting habitats. Understanding how animals make these choices requires elucidating the functional significance and interactions among habitat features. The criteria an animal uses to determine the functional quality of a resource may differ from those traditionally measured in surveys of habitat quality. Similarly, the relative value of a particular resource may vary with an animal’s physiology or behavior, or the unique combination of the resource’s characteristics. Previous studies have identified a number of specific individual, measurable, habitat parameters that influence habitat selection of a sagebrush specialist, the pygmy rabbit …
Greater Bud Outgrowth Of Bromus Inermis Than Pascopyrum Smithii Under Multiple Environmental Conditions, Jacqueline P. Ott, Jack L. Butler, Yuping Rong, Lan Xu
Greater Bud Outgrowth Of Bromus Inermis Than Pascopyrum Smithii Under Multiple Environmental Conditions, Jacqueline P. Ott, Jack L. Butler, Yuping Rong, Lan Xu
Natural Resource Management Faculty Publications
Tiller recruitment of perennial grasses in mixed-grass prairie primarily occurs from belowground buds. Environmental conditions, such as temperature, soil moisture and grazing can affect bud outgrowth of both invasive and native perennial grasses. Differential bud outgrowth responses of native and invasive species to climate change and grazing could alter competitive interactions that have implications for future land management. The aims of this work were to (i) compare how spring temperature altered bud outgrowth of native Pascopyrum smithii (Rydb.) Á. Löve (western wheatgrass) and introduced Bromus inermis Leyss.(smooth brome), (ii) compare how watering frequency altered bud outgrowth of these two species …
Stopover Ecology Of Ruby-Throated Hummingbirds (Archilochus Colubris) During Autumn Migration, Theodore Joseph Zenzal Jr
Stopover Ecology Of Ruby-Throated Hummingbirds (Archilochus Colubris) During Autumn Migration, Theodore Joseph Zenzal Jr
Dissertations
The Ruby-throated Hummingbird (Archilochus colubris) is one of the smallest Nearctic-Neotropical migrants and the only species of hummingbird that breeds in Eastern North America, yet few studies have investigated the biology of Ruby-throated Hummingbirds when they stopover during migration. Given their small size, high metabolism, aggression, and specialized diet, hummingbirds may represent a migrant that operates on the physiological edge. Therefore it is important to understand the factors that influence their stopover as well as the decision to resume migration. Towards this end, Ruby-throated Hummingbirds were captured during autumn migration along the northern coast of the Gulf of Mexico to …