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Articles 271 - 300 of 657
Full-Text Articles in Physical Sciences and Mathematics
The Land Scouts: Guide Book, Katie D. Ries
The Land Scouts: Guide Book, Katie D. Ries
Faculty Creative and Scholarly Works
The Land Scouts promote modern land stewardship and are open to all. The Guide Book gives an overview of the scouts as well as information on getting started earning badges and hosting a troop.
The Planet, 2014, Fall, Christopher Zemp, Huxley College Of The Environment, Western Washington University
The Planet, 2014, Fall, Christopher Zemp, Huxley College Of The Environment, Western Washington University
The Planet
No abstract provided.
Mathematical Modeling And Simulation Of Multialleic Migration-Selection Models, Chad N. Vidden
Mathematical Modeling And Simulation Of Multialleic Migration-Selection Models, Chad N. Vidden
Journal of Undergraduate Research at Minnesota State University, Mankato
Population ecology is concerned with the growth and decay of specific populations. This field has a variety of applications ranging from evolution and survival at the environmental level to the spread of infectious disease at the cellular and molecular levels. Many ecological circumstances require the use of mathematical methods and reasoning in order to acquire better knowledge of the issue at hand. This study considered and analyzed multiple different mathematical models of population dynamics along with their purposes. This foundation was then applied in order to explore the migration of populations from one isolated region to another along with the …
Coexistence Of Multi-Allelic Polymorphism With Migration And Selection, Andrew Flick
Coexistence Of Multi-Allelic Polymorphism With Migration And Selection, Andrew Flick
Journal of Undergraduate Research at Minnesota State University, Mankato
Population ecology is concerned with the growth patterns of populations. This field has many applications, ranging from survival at the environmental level, to the spread of infectious diseases at the cellular level. Mathematical modeling and computer simulation can be powerful tools in researching this area. I will be investigating the spatial patterns in populations (or gene frequencies) due to migration and selection. My research conditions are for the maintenance of polymorphism under a variety of migration schemes in discrete-space and continuous-time mathematical models. The results will be applicable from the ecological level to the molecular level. Some species are better …
Applied Statistics In Environmental Monitoring: Case Studies And Analysis For The Michigan Bald Eagle Biosentinel Program, Katherine Leith
Applied Statistics In Environmental Monitoring: Case Studies And Analysis For The Michigan Bald Eagle Biosentinel Program, Katherine Leith
All Dissertations
The bald eagle (Haliaeetus leucocephalus) is an extensively researched tertiary predator. Its life history and the impact of various stressors on its reproductive outcomes have been documented in many studies, and over many years. Furthermore, the bald eagle population recovery in Michigan has been closely monitored since the 1960s, as it has continued to recover from a contaminant-induced bottleneck. Because of its position at the top of the aquatic food web and the large body of ethological knowledge, the bald eagle has become a sentinel species for the Michigan aquatic ecosystem. In April 1999, the Michigan Department of Environmental Qualtity, …
The Potential For Marine Protected Areas In The San Francisco Bay, Samantha P. Delapena
The Potential For Marine Protected Areas In The San Francisco Bay, Samantha P. Delapena
Master's Projects and Capstones
The San Francisco Bay (the Bay) is the largest estuary on the Pacific Coast. This makes it one of country's greatest natural resources. Historical and current impacts from mining, pollution, and dredging have reduced the size of the Bay’s shallow, productive environment, which provides vital habitat for many important species. The seven and a half million people that inhabit the shores and hills surrounding the Bay, and economic activities such as commercial fishing and development continue to degrade ecosystems. Although conservation efforts have led to improvement of water quality and some habitat restoration over the past few decades, very little …
A Memento Of Complexity: The Rhetorics Of Memory, Ambience, And Emergence, Glen Southergill
A Memento Of Complexity: The Rhetorics Of Memory, Ambience, And Emergence, Glen Southergill
All Dissertations
Drawing from complexity theory, this dissertation develops a schema of rhetorical memory that exhibits extended characteristics. Scholars traditionally conceptualize memory, the fourth canon in classical rhetoric, as place (loci) or image (phantasm). However, memory rhetoric resists the traditional loci-phantasm framework and instead emerges from enmeshments of interiority, collectivity, and technology. Emergence considers the dynamics of fundamental parts that generate complex systems and offers a methodological lens to theorizing memory. The resulting construct informs everyday life, which includes interfacing with pervasive computing or sensing familiarity. Further, congruently with a neurological turn that contradicts simplification, this dissertation resituates rhetorical memory as generative …
The Planet, 2014, Spring, Mikey Jane Moran, Sarah Mikkelborg, Huxley College Of The Environment, Western Washington University
The Planet, 2014, Spring, Mikey Jane Moran, Sarah Mikkelborg, Huxley College Of The Environment, Western Washington University
The Planet
No abstract provided.
Virginia Wetlands Report Vol. 29, No. 1, Virginia Institute Of Marine Science, Center For Coastal Resources Management
Virginia Wetlands Report Vol. 29, No. 1, Virginia Institute Of Marine Science, Center For Coastal Resources Management
Virginia Wetlands Reports
No abstract provided.
Ecological Issues: A Daoist Confucian Perspective, Pamela Herron
Ecological Issues: A Daoist Confucian Perspective, Pamela Herron
Pamela Herron
Abstract: The Dao De Jing is the foundation of Daoism while the Lun Yu, or the Analects of Confucius, is the central text for Confucianism. The Dao De Jing in particular has long been a popular text within the new age spiritual movement in Western culture. Both classic Chinese texts emphasize working toward a harmony with nature without the assumption of man set above plants, animals, mountains, water and other aspects of nature; rather man is a part of this greater whole. This paper explores specific references in both classic texts that reinforce this idea of man being simply part …
Ecological Homogenization Of Urban Usa, Peter M. Groffman, Jeannine Cavender-Bares, Neil D. Bettez, J. Morgan Grove, Sharon J. Hall, James B. Heffernan, Sarah E. Hobbie, Kelli L. Larson, Jennifer L. Morse, Christopher Neill, Kristen C. Nelson, Jarlath O'Neil-Dunne, Diane E. Pataki, Colin Polsky, Rinku Roy Chowdhury, Meredith K. Steele
Ecological Homogenization Of Urban Usa, Peter M. Groffman, Jeannine Cavender-Bares, Neil D. Bettez, J. Morgan Grove, Sharon J. Hall, James B. Heffernan, Sarah E. Hobbie, Kelli L. Larson, Jennifer L. Morse, Christopher Neill, Kristen C. Nelson, Jarlath O'Neil-Dunne, Diane E. Pataki, Colin Polsky, Rinku Roy Chowdhury, Meredith K. Steele
Environmental Science and Management Faculty Publications and Presentations
A visually apparent but scientifically untested outcome of land-use change is homogenization across urban areas, where neighborhoods in different parts of the country have similar patterns of roads, residential lots, commercial areas, and aquatic features. We hypothesize that this homogenization extends to ecological structure and also to ecosystem functions such as carbon dynamics and microclimate, with continental-scale implications. Further, we suggest that understanding urban homogenization will provide the basis for understanding the impacts of urban land-use change from local to continental scales. Here, we show how multi-scale, multi-disciplinary datasets from six metropolitan areas that cover the major climatic regions of …
Monteverde: Ecology And Conservation Of A Tropical Cloud Forest - 2014 Updated Chapters, Nalini M. Nadkarni, Nathaniel T. Wheelwright
Monteverde: Ecology And Conservation Of A Tropical Cloud Forest - 2014 Updated Chapters, Nalini M. Nadkarni, Nathaniel T. Wheelwright
Bowdoin Scholars' Bookshelf
The Monteverde Cloud Forest Reserve has captured the worldwide attention of biologists, conservationists, and ecologists and has been the setting for extensive investigation over the past 40 years. Roughly 40,000 ecotourists visit the Cloud Forest each year, and it is often considered the archetypal high-altitude rain forest. “Monteverde: Ecology and Conservation of a Tropical Cloud Forest”, edited by Nalini Nadkarni and Nathaniel T. Wheelwright (Oxford University Press, 2000 and Bowdoin’s Scholar’s Bookshelf. Book 1 ), features synthetic chapters and specific accounts written by more than 100 biologist and local residents, presenting in a single volume everything known in 2000 about …
Eastern Wild Turkey Reproductive Ecology In Longleaf Pine Forests, Andrew R. Little, Mary M. Streich, Michael J. Chamberlain, L. Mike Conner, Robert J. Warren, Joseph W. Jones
Eastern Wild Turkey Reproductive Ecology In Longleaf Pine Forests, Andrew R. Little, Mary M. Streich, Michael J. Chamberlain, L. Mike Conner, Robert J. Warren, Joseph W. Jones
School of Natural Resources: Faculty Publications
No abstract provided.
The Planet, 2014, Winter, Mikey Jane Moran, Huxley College Of The Environment, Western Washington University
The Planet, 2014, Winter, Mikey Jane Moran, Huxley College Of The Environment, Western Washington University
The Planet
No abstract provided.
The Pikeminnow Against The Dam, Lucy Andrews
The Pikeminnow Against The Dam, Lucy Andrews
Gateway Prize for Excellent Writing
No abstract provided.
How Many Are Out There? A Novel Approach For Open And Closed Systems, Zia Rehman
How Many Are Out There? A Novel Approach For Open And Closed Systems, Zia Rehman
Electronic Theses and Dissertations
We propose a ratio estimator to determine population estimates using capture-recapture sampling. It's different than traditional approaches in the following ways: (1) Ordering of recaptures: Currently data sets do not take into account the "ordering" of the recaptures, although this crucial information is available to them at no cost. (2) Dependence of trials and cluster sampling: Our model explicitly considers trials to be dependent and improves existing literature which assumes independence. (3) Rate of convergence: The percentage sampled has an inverse relationship with population size, for a chosen degree of accuracy. (4) Asymptotic Attainment of Minimum Variance (Open Systems: (=population …
Finding Them Before They Find Us: Informatics, Parasites, And Environments In Accelerating Climate Change, Daniel R. Brooks, Eric P. Hoberg, Walter A. Boeger, Scott Lyell Gardner, Kurt E. Galbreath, David Herczeg, Hugo H. Mejía-Madrid, S. Elizabeth Rácz, Altangerel Tsogtsaikhan Dursahinhan
Finding Them Before They Find Us: Informatics, Parasites, And Environments In Accelerating Climate Change, Daniel R. Brooks, Eric P. Hoberg, Walter A. Boeger, Scott Lyell Gardner, Kurt E. Galbreath, David Herczeg, Hugo H. Mejía-Madrid, S. Elizabeth Rácz, Altangerel Tsogtsaikhan Dursahinhan
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Parasites are agents of disease in humans, livestock, crops, and wildlife and are powerful representations of the ecological and historical context of the diseases they cause. Recognizing a nexus of professional opportunities and global public need, we gathered at the Cedar Point Biological Station of the University of Nebraska in September 2012 to formulate a cooperative and broad platform for providing essential information about the evolution, ecology, and epidemiology of parasites across host groups, parasite groups, geographical regions, and ecosystem types. A general protocol, documentation–assessment–monitoring–action (DAMA), suggests an integrated proposal to build a proactive capacity to understand, anticipate, and respond …
Are We Approaching Pit Lake Closure From The Wrong Perspective?, Mark A. Lund, Melanie L. Blanchette
Are We Approaching Pit Lake Closure From The Wrong Perspective?, Mark A. Lund, Melanie L. Blanchette
Research outputs 2014 to 2021
Pit lakes are similar to natural lakes formed by faulting, glacial action, volcanic action and asteroid collisions. These natural lakes have, after thousands of years, developed into environmentally significant ecosystems. As artificial constructs, pit lakes can be modified prior to filling to enhance lake attributes, such as modification of catchment size, creation of littoral zones and addition of organic matter. Significant advances could be made in successful closure and relinquishment of pit lakes, by 1) choosing appropriate model lakes, 2) understanding successional processes, 3) designing pit lakes to enhance ecological values, and 4) recognizing that it will take time to …
Getting Salmon Back In Salmon Creek: Systematizing Comparative Water Quality Analysis For Targeted Restoration, Zbigniew J. Grabowski, Sarah Janjua, Michael Swamer, Heejun Chang, Eric Watson
Getting Salmon Back In Salmon Creek: Systematizing Comparative Water Quality Analysis For Targeted Restoration, Zbigniew J. Grabowski, Sarah Janjua, Michael Swamer, Heejun Chang, Eric Watson
Geography Faculty Publications and Presentations
This presentation focuses on water quality restoration efforts in Salmon Creek
Global Change Factors On Ecosystem Invasibility, Raj Lal, Jeffrey Dukes, Michael J. Schuster, Nick G. Smith
Global Change Factors On Ecosystem Invasibility, Raj Lal, Jeffrey Dukes, Michael J. Schuster, Nick G. Smith
The Summer Undergraduate Research Fellowship (SURF) Symposium
Current climate and human-induced changes are projected to alter many regimes of ecosystem functioning. It is projected that invasive species, nonnative species that can be of great detriment to an ecosystem, will benefit under these conditions. The Prairie Invasion and Climate Experiment (PRICLE) studies the effects of two global change factors – N addition and altered precipitation – on invasive species success and the traits that are selected for in a mixed-grass prairie ecosystem. PRICLE is a two by two factorial design over three replications in a restored mixed-grass prairie ecosystem. The major findings from the community traits examination of …
The Planet, 2013, Fall, Mikey Jane Moran, Huxley College Of The Environment, Western Washington University
The Planet, 2013, Fall, Mikey Jane Moran, Huxley College Of The Environment, Western Washington University
The Planet
No abstract provided.
Wildlands Conservancy/Connick Ranch Research, Susie Van Kirk
Wildlands Conservancy/Connick Ranch Research, Susie Van Kirk
Susie Van Kirk Papers
Susie Van Kirks research notes on the Wildlands Conservancy and Connick Ranch. Includes newspaper references, interviews, as well as deed, survey and patent information.
James’S Rule And Causes And Consequences Of A Latitudinal Cline In The Demography Of John’S Snapper (Lutjanus Johnii) In Coastal Waters Of Australia, Mike Cappo, Ross J. Marriott, Stephen J. Newman
James’S Rule And Causes And Consequences Of A Latitudinal Cline In The Demography Of John’S Snapper (Lutjanus Johnii) In Coastal Waters Of Australia, Mike Cappo, Ross J. Marriott, Stephen J. Newman
Fisheries Research Articles
Demographic parameters were derived from sectioned otoliths of John’s Snapper (Lutjanus johnii) from 4 regions across 9° of latitude and 23° of longitude in northern Australia. Latitudinal variation in size and growth rates of this species greatly exceeded longitudinal variation. Populations of John’s Snapper farthest from the equator had the largest body sizes, in line with James’s rule, and the fastest growth rates, contrary to the temperature size rule for ectotherms. A maximum age of 28.6 years, nearly 3 times previous estimates, was recorded and the largest individual was 990 mm in fork length. Females grew to a larger mean …
The Effect Of The Probiotic Pediococcus Acidilactici On The Gut Microbiota Ecology Of Rainbow Trout (Oncorhynchus Mykiss Walbaum) Analysed Using Dgge, Alice Anderson
The Plymouth Student Scientist
The microbiota of the gastrointestinal tract heavily influences the health, growth and survival of fish. Probiotics have proved effective in improving fish productivity in aquaculture. Research suggests that probiotics, supplemented in the feed, may elicit these benefits by altering the ecology of the gastrointestinal microbiota. The probiotic Pediococcus acidilactici has been successfully used for terrestrial animals and humans but its use in aquatic organisms has been less researched. In the present study, rainbow trout Oncorhynchus mykiss (Walbaum) were fed a diet that contained Ped. Acidilactici, or a control diet. Analysis of the posterior digesta bacteria, using a non-culture dependant technique, …
Integrating, Developing, And Testing Methods To Generate More Cohesive Approaches To Biogeographic Inference, Mallory Elizabeth Eckstut
Integrating, Developing, And Testing Methods To Generate More Cohesive Approaches To Biogeographic Inference, Mallory Elizabeth Eckstut
UNLV Theses, Dissertations, Professional Papers, and Capstones
As a fundamental component of the developing discipline of conservation biogeography, broadscale analyses of biotic assembly and disassembly across multiple temporal and spatial scales provide an enhanced understanding of how geologic transformations and climate oscillations have shaped extant patterns of biodiversity. As with any scientific field, there are limitations in the case of biogeographic historical reconstructions. Historical reconstructions are only as robust as the theoretical underpinnings of the methods of reconstruction (including data collection, quality, analysis, and interpretation). Nevertheless, historical reconstructions of species distributions can help inform our understanding of how species respond to environmental change.
My dissertation takes a …
Dot Product Graphs And Their Applications To Ecology, Sean Bailey
Dot Product Graphs And Their Applications To Ecology, Sean Bailey
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
We will introduce a new tool to visualize the comparison between different birds. This tool will allow users to use any number of measurable traits to see relationships between different birds, both individually and collectively.
Modeling The Genetic Consequences Of Mutualism On Communities, Carrie E. Eaton
Modeling The Genetic Consequences Of Mutualism On Communities, Carrie E. Eaton
Doctoral Dissertations
Three models of coevolutionary dynamics between mutualistically interacting species are developed. The first is a three loci, haploid model describing a general plant-pollinator system, such as Greya moth and its host plant. In this case, the system will always collapse to a single plant type and pollinator type. In a community with an mutant plant type, it is possible for a host-switch to occur, governed by the initial relative abundance plant type and the pollinator choosiness. In addition, genetic diversity can be maintained if the pollinator has no differential host preference, only adaptation to a host. Next, this model is …
Enhancing Coastal Resilience: Perspectives On Valuing Ri Coastal Lands, Kyle Nyskohus
Enhancing Coastal Resilience: Perspectives On Valuing Ri Coastal Lands, Kyle Nyskohus
Honors Projects in Science and Technology
This paper discusses coastal resilience as an organizing framework for future policymaking, coastal planning, and insurance decisions, and explores the different perspectives of the value of ecosystems held by various stakeholders in Rhode Island’s coastal communities. A grounded theory approach was used in an effort to abstract general insights from the substantive but isolated areas of coastal management and economics. Special attention is given to the perspectives of municipal decision makers, the National Flood Insurance Program, natural economists, and real estate developers. We have (1) conducted a statistical analysis of environmental spending of RI towns, (2) identified key models for …
The Blue Sapphire Of The Mind: Notes For A Contemplative Ecology, Douglas E. Christie
The Blue Sapphire Of The Mind: Notes For A Contemplative Ecology, Douglas E. Christie
Faculty Pub Night
No abstract provided.
The Planet, 2013, Spring, James Rogers, Huxley College Of The Environment, Western Washington University
The Planet, 2013, Spring, James Rogers, Huxley College Of The Environment, Western Washington University
The Planet
No abstract provided.