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2023

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Articles 571 - 600 of 1079

Full-Text Articles in Ecology and Evolutionary Biology

Potential Loss Of Pheromone Receptors In The Red Milkweed Beetle, Tetraopes Tetrophthalmus (Coleoptera: Cerambycidae), Mathew A. Price Apr 2023

Potential Loss Of Pheromone Receptors In The Red Milkweed Beetle, Tetraopes Tetrophthalmus (Coleoptera: Cerambycidae), Mathew A. Price

2023 Midwest Ecology & Evolution Conference

The family of longhorn beetles (Coleoptera: Cerambycidae) are characterized by their elongate antennae, which are well adapted for detecting volatile compounds. This makes them an ideal family to study odorant receptor genes (ORs), which are the rapidly evolving family of proteins that are used by insects to detect odors at the molecular level. Here, we present data on 48 ORs we have sequenced and annotated from an antennal transcriptome of a male red milkweed beetle, Tetraopes tetrophthalmus. In contrast to most cerambycids, T. tetrophthalmus is not known to produce long-range sex pheromones to attract or select mates; correspondingly, …

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The Influence Of Cover Crops On Plant-Soil Microbe Interactions Of Native Prairie Forbs, Josh C. Poland Apr 2023

The Influence Of Cover Crops On Plant-Soil Microbe Interactions Of Native Prairie Forbs, Josh C. Poland

2023 Midwest Ecology & Evolution Conference

Tallgrass prairies are abundant and rich habitats where soil microbial communities frequently interact with native grass and forb species. Cover crops increase available soil nutrients and promote healthy soil microbial communities in agriculture, and therefore may provide similar benefits to restoration. A prairie restoration in Madison Co, IL was initiated in autumn 2021 using areas with two different cover crop types, NLS Soil Health Mix and Winter Oat, as well as areas with no cover crops. A greenhouse project exposed five native forb species (Monarda fistulosa, Rudbeckia hirta, Pycnanthemum virginianum, Desmodium canadensis (legume), and Asclepias incarnata …

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Polyploidy’S Impact On Plant-Herbivore Dynamics: Evidence From Experiments With Water-Lily Aphids And Greater Duckweed, Hannah R. Assour Apr 2023

Polyploidy’S Impact On Plant-Herbivore Dynamics: Evidence From Experiments With Water-Lily Aphids And Greater Duckweed, Hannah R. Assour

2023 Midwest Ecology & Evolution Conference

Polyploidy, or whole-genome duplication, is a widespread mutational process in plants with a myriad of phenotypic and genotypic consequences. In addition to consequences incurred by the plant, polyploidy can potentially cascade to alter species interactions. Yet, knowledge of whether ploidy-induced variation has effects on plant-herbivore dynamics is scarce. Here, we test whether aphid herbivores exhibit preference for a diploid or polyploid host cytotype and whether ploidy impacts plant resistance and tolerance to aphids, measured as aphid and plant performance respectively. To answer these questions, we evaluated aphid choice and compared the effects of the water-lily aphid (Rhopalosiphum nymphaeae) …

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Identifying Olfactory Receptors In The Pole Borer, Neandra Brunnea (Coleoptera: Cerambycidae), Kayla M. Hefner Apr 2023

Identifying Olfactory Receptors In The Pole Borer, Neandra Brunnea (Coleoptera: Cerambycidae), Kayla M. Hefner

2023 Midwest Ecology & Evolution Conference

The behavior of longhorned beetles (Coleoptera: Cerambycidae) is strongly shaped by volatile compounds, which can dictate the selection of hosts and mates, segregate heterospecifics, and initiate oviposition. These compounds are primarily detected at the molecular level by the protein family of odorant receptors (ORs), which rapidly evolve in response to evolutionary changes such as diet or sociality. Thus, the OR gene family could provide great insight into the ecology and evolution of animals, especially when their chemical ecology is otherwise poorly understood. We are examining the ORs of the pole borer Neandra brunnea (Cerambycidae: Parandrinae), for which the specific role …

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Historical Climate-Influenced Shifts In Flower Shape And Production Of A Common Annual Plant, Orange Jewelweed (Impatiens Capensis), Amber M. Stanley Apr 2023

Historical Climate-Influenced Shifts In Flower Shape And Production Of A Common Annual Plant, Orange Jewelweed (Impatiens Capensis), Amber M. Stanley

2023 Midwest Ecology & Evolution Conference

Climate change is a major human-mediated stressor that has been altering temperature patterns across the globe since the Industrial Revolution. In the Eastern United States, it has been projected that the average annual temperature will increase by 3-5 degrees Celsius by the year 2100. Such environmental changes have the potential to disrupt key interactions between species. For example, the vast majority (ca. 90%) of flowering plants rely on animal pollinators to transfer pollen between individuals to reproduce. Higher temperatures cause many plant species to flower up to 3-4 weeks earlier in the year, but pollinator activity has not shifted with …

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Influence Of Seed Mixes On Pollinator Communities Within An Electric Right-Of-Way, Kylee Nissen Apr 2023

Influence Of Seed Mixes On Pollinator Communities Within An Electric Right-Of-Way, Kylee Nissen

2023 Midwest Ecology & Evolution Conference

Pollinator communities are amongst species facing dramatic population declines due to anthropogenic changes. These declines are driven by land use changes with agricultural expansion and urbanization. Utility lands must be managed in ways that prevent tall vegetation from encroaching, making them an ideal place to recreate native grasslands. This research aims to assess how different seed mixes used by utility companies impact pollinator community composition. The study site is a 15-acre electric ROW located outside of St. Louis IL. The site was prepared in 2021 and incorporates a randomized mix of turfgrass-seeded plots, native seeded plots, and unseeded plots acting …

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Uncovering Natural Variation In The Mechanisms Of A Polyphenism, Stephen Dreyer Apr 2023

Uncovering Natural Variation In The Mechanisms Of A Polyphenism, Stephen Dreyer

2023 Midwest Ecology & Evolution Conference

Polyphenism, the ability of an organism to produce discrete alternative phenotypes in response to environmental conditions, exemplifies the non-linear relationship among genes, the traits they influence, and the environment. While several genes that regulate polyphenism have been identified in some systems, such as the nematode Pristionchus pacificus, which exhibits a resource polyphenism in the development of alternative mouth morphologies, it is generally unknown which loci harbor intraspecific variation for polyphenism. Quantitative traits, consisting of many genes and their interactions with the environment, are expected to harbor variation, even among individuals with the same ultimate phenotype. As a first approach …

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An Assessment Of Aquatic Macroinvertebrate Structure And Function Within The Mill Creek Watershed; Cincinnati, Ohio, Erin Linko Apr 2023

An Assessment Of Aquatic Macroinvertebrate Structure And Function Within The Mill Creek Watershed; Cincinnati, Ohio, Erin Linko

2023 Midwest Ecology & Evolution Conference

The Mill Creek Watershed is an urbanized network of streams that drains through the city of Cincinnati, Ohio. This watershed has had a long history of habitat destruction and pollution due to a variety of anthropogenic factors, namely Cincinnati’s combined sewage overflow (CSO) sanitation system. Through an ongoing biomonitoring project at Xavier University, nine sites along the mainstem Mill Creek and three of its tributaries have been studied since 2014. Through habitat assessments, fecal coliform testing, and aquatic macroinvertebrate sampling, the ecological health of this watershed can be tracked over time. The main objective of this research project was to …

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Microbe-Mediated Drought Responses In Plant Communties, Caleb Callahan, Jordan Ziss Apr 2023

Microbe-Mediated Drought Responses In Plant Communties, Caleb Callahan, Jordan Ziss

2023 Midwest Ecology & Evolution Conference

Microbial communities from drought environments have been observed to protect plants undergoing drought stress. A majority of studies have focused on single species; however, effects at a community level have yet to be thoroughly investigated. We asked how plant communities facing drought stress will differ in productivity when inoculated with microbe communities that have evolved under drought compared to well-watered conditions, as well as how biomass and trait responses vary across plant species. To investigate this, we used microbial communities from the rainfall manipulation LTER at Kellogg Biological Station to inoculate mesocosms simulating early successional grassland communities under drought or …

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Initial Steps In Testing The Stress Gradient Hypothesis For Selenium Exposure In Soil Bacteria, Kristian J. Harris Apr 2023

Initial Steps In Testing The Stress Gradient Hypothesis For Selenium Exposure In Soil Bacteria, Kristian J. Harris

2023 Midwest Ecology & Evolution Conference

The Stress Gradient Hypothesis (SGH) states that interspecific interactions should shift from competitive to facilitative interactions as environmental stress increases. Selenium (Se) is a naturally occurring metalloid that acts as an environmental pollutant and as an essential micronutrient. Due to its metallic properties, Se acts as an oxidative stress and can be toxic to plants and animals. Given this, Se in soil systems acts as an abiotic stress that influences species composition and species interactions. Within soils, bacteria and fungi have evolved to tolerate Se via detoxification and Se processing for respiration and studies show that metal detoxification traits like …

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Bryophytes At Cave Entrances Across A Range Of Anthropogenic Disturbance, Morghan Mccool Apr 2023

Bryophytes At Cave Entrances Across A Range Of Anthropogenic Disturbance, Morghan Mccool

2023 Midwest Ecology & Evolution Conference

Cave entrances are critical ecosystems in their role as ecotones between the interior cave environment and the surrounding external environment. Bryophytes serve as ecosystem engineers of cave entrance microhabitats. This study piloted a method to quantify anthropogenic disturbance unique to cave entrances and characterize the bryophyte assemblages at caves in urban and other natural areas. Bryophytes and environmental variables were sampled from cave entrances; bryophytes were identified, alpha and beta diversity values were computed. So far, 144 species of bryophytes, 36 of which were state records, have been identified across 6 sites. By improving knowledge of bryophyte communities, park managers …

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Examining The Reproductive Ecology Of Terrapene Ornata In Western Nebraska, Katie Brighton, Keetan Munsell Apr 2023

Examining The Reproductive Ecology Of Terrapene Ornata In Western Nebraska, Katie Brighton, Keetan Munsell

2023 Midwest Ecology & Evolution Conference

Understanding the reproductive ecology of any species is vital for determining intraspecific variation in individual fitness, modeling population growth or persistence potential, and developing effective conservation strategies. The reproductive ecology of many species has been extensively studied (particularly in mammals); however, other taxonomic groups including many ectotherms has not been well documented. One such ectotherm is the ornate box turtle (Terrapene ornata), which, to our knowledge, has never had its reproductive ecology extensively examined, especially in the field. In this study, we examined the reproductive ecology of ornate box turtles over a six-week period in a mixed shortgrass prairie in …

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Spatial Variation In Flowering Age In Cirsium Pitcheri: Does This Imperiled Dune Thistle Hedge Its Bets?, Lucas A. Priemer Apr 2023

Spatial Variation In Flowering Age In Cirsium Pitcheri: Does This Imperiled Dune Thistle Hedge Its Bets?, Lucas A. Priemer

2023 Midwest Ecology & Evolution Conference

For perennial plants, the optimal timing of flowering is a tradeoff between survivorship and fecundity, a classic example of bet-hedging. For many monocarpic perennials, there is an advantage in delaying flowering until the plant reaches a larger size and is thus capable of a higher fecundity. However, in delaying flowering, there is a risk that the plant will die before reproducing at all. Here, we investigate this fitness trade-off in the imperiled dune thistle, Cirsium pitcheri. Using a long-term, spatially-explicit demographic data set with yearly censuses, we found that C. pitcheri individuals on the foredune flowered at a younger …

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Patterns Of Neural Investment In Sensory Modalities Of Tropical Canopy And Understory-Dwelling Ants (Pseudomyrmex), Daniella Prince Apr 2023

Patterns Of Neural Investment In Sensory Modalities Of Tropical Canopy And Understory-Dwelling Ants (Pseudomyrmex), Daniella Prince

2023 Midwest Ecology & Evolution Conference

The neuroanatomy of insects reflects functional roles and cognitive capabilities. The high energetic cost of the development and maintenance of neural tissue constrains investment in brain compartments that receive and process sensory input. Thus, differential investment in sensory compartments should parallel selective pressures, including significant habitat parameters. We tested the hypothesis that ants occupying different vertical rainforest strata exhibit differential investment in visual and olfactory brain regions. We used confocal microscopy to examine immunostained brains of species with distinct nesting and foraging preferences: Pseudomyrmex boopis (understory; U), P. gracilis (understory and canopy; UC), and P. oculatus (canopy; C). We created …

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Environmental Factors Shaping A Sawfly-Associated Community Of Parasitoids, Carson Kephart, Robin K. Bagely Apr 2023

Environmental Factors Shaping A Sawfly-Associated Community Of Parasitoids, Carson Kephart, Robin K. Bagely

2023 Midwest Ecology & Evolution Conference

A major goal of evolutionary biology is to understand the mechanisms that shape biodiversity, especially amongst highly speciose lineages such as parasitic wasps. However, most of these lineages are poorly described, with very little available natural history information. This lack of information limits our ability to uncover the environmental factors that contribute to their patterns of divergence, distribution, and abundance. To that end, here we take advantage of a community of hymenopteran parasites that has an unusually large amount of available information since they attack an economically important pine sawfly species, Neodiprion lecontei. We build upon a set of …

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Evolution Of A Genus Of Gall Wasp Kleptoparasites, Guerin E. Brown Apr 2023

Evolution Of A Genus Of Gall Wasp Kleptoparasites, Guerin E. Brown

2023 Midwest Ecology & Evolution Conference

Kleptoparasites do not directly parasitize their hosts but instead steal food and resources, reducing host fitness. Like direct parasites, kleptoparasites can be highly dependent on their hosts such that their evolutionary histories may be linked. Here, we study the evolution of a kleptoparasitic wasp genus, Synergus (Hymenoptera: Cynipidae: Synergini), in relation to their hosts, oak gall wasps (Hymenoptera: Cynipidae: Cynipini). Ovipositing oak gall wasps induce the formation of galls on oaks (Fagaceae) that provide food and shelter to one or more developing gall wasps. Galls induced by different gall wasp species are diverse in size, shape, color, and location …

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Diversification And Convergence Following The Transition From Saltwater To Freshwater In Stingrays, Autumn D Magnuson Apr 2023

Diversification And Convergence Following The Transition From Saltwater To Freshwater In Stingrays, Autumn D Magnuson

2023 Midwest Ecology & Evolution Conference

One of the most fundamental questions in biology is why some groups of organisms are more diverse than others. Classic hypotheses for explaining differences in diversity consider distinctions in time, place, resources, and competitors as the staging grounds for differential diversification. Freshwater and saltwater environments have similar levels of diversity despite significant differences in size, so studying transitions between the two systems can provide insights into evolutionary processes. Despite the challenges associated with this transition, stingrays have invaded freshwater habitats multiple times across different continents, making them useful for better understanding these systems. In this study, we evaluated the frequency …

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Where The Wild Mushrooms Are: Species And Secondary Metabolite Diversity In Fungal Species On The Saint Mary’S College Campus, Lex K. Gilman Apr 2023

Where The Wild Mushrooms Are: Species And Secondary Metabolite Diversity In Fungal Species On The Saint Mary’S College Campus, Lex K. Gilman

2023 Midwest Ecology & Evolution Conference

Secondary metabolites in fungi have three main ecological functions: protection against predation, communication with other mushrooms, and assistance in pathogenic interactions. These compounds have also led to the common use of mushrooms as food and in traditional Chinese or other medicinal applications. However, there are currently few good resources for identifying mushroom species in North-Central Indiana. In addition, limited research exists on secondary metabolites in mushrooms. The objective of this research was to create a preliminary database of mushroom species at Saint Mary’s College and conduct preliminary research on the secondary metabolites of these local species. Fungal specimens were identified …

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Coyote Occupancy And Movement In Hanover County, Virginia, Richard S. Groover Apr 2023

Coyote Occupancy And Movement In Hanover County, Virginia, Richard S. Groover

Virginia Journal of Science

Although the coyote (Canis latrans) is native to North America, we have limited understanding of its presence in Virginia. Coyote range expansion is linked to anthropogenic factors, including habitat fragmentation and the extirpation of apex predators. Information on coyote adaptations to Virginia habitats is scarce, and eastern coyotes may have unique adaptations for colonizing an area. Anecdotal evidence suggests that coyotes are abundant in Hanover County (north of Richmond, VA), but this has not been confirmed. This study was conducted over an 18-month period with multiple survey sites throughout Hanover County, each equipped with game camera stations and …

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Using Podcasts To Bring National Estuarine Research Reserves Into The Classroom For Grades 6-12, Kaitlyn M. Dirr Apr 2023

Using Podcasts To Bring National Estuarine Research Reserves Into The Classroom For Grades 6-12, Kaitlyn M. Dirr

Senior Theses

In a typical classroom setting, there are significant challenges to exposing students to concepts related to earth sciences and the environment. These challenges are exacerbated when conveying lessons about geographic areas with limited access, such as oceans and coastlines (Louv, 2010). It is now more important than ever for environmental education to improve and adapt to our changing world. Educators may have the opportunity to bring these subjects to life by using media content such as podcasts to introduce students to new places and the scientists, managers and educators that work in those spaces. In the United States, there exists …

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Is Lineage C A Distinct Species?, Shiza Khan Apr 2023

Is Lineage C A Distinct Species?, Shiza Khan

Honors Theses

No abstract provided.

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Rhythms Of The Earth—Editorial Introduction, Karim-Aly S. Kassam, Morgan Ruelle, Christopher P. Dunn, Raj Pandya, Felice Wyndham Apr 2023

Rhythms Of The Earth—Editorial Introduction, Karim-Aly S. Kassam, Morgan Ruelle, Christopher P. Dunn, Raj Pandya, Felice Wyndham

Sustainability and Social Justice

This special issue of GeoHealth, entitled Rhythms of the Earth: Ecological Calendars and Anticipating the Anthropogenic Climate Crisis, is a transdisciplinary articulation of a methodology of hope to confront the multiple injustices of the Anthropocene. One of the greatest challenges of the climate crisis is the lack of predictability at the scale of communities where impacts are most immediate. Indigenous and rural societies face an ever shifting “new normal” through increasing inconsistency in the seasonality of temperature and precipitation, as well as greater frequency of extreme weather events. With global food systems dependent on local and small producers, climatic variability …

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Groundwater-Stream Connections Shape The Spatial Pattern And Rates Of Aquatic Metabolism, Anna Lupon, Lluís Gomez-Gener, Megan Fork, Hjalmar Laudon, Eugènia Martí, William Lidberg, Ryan A. Sponseller Apr 2023

Groundwater-Stream Connections Shape The Spatial Pattern And Rates Of Aquatic Metabolism, Anna Lupon, Lluís Gomez-Gener, Megan Fork, Hjalmar Laudon, Eugènia Martí, William Lidberg, Ryan A. Sponseller

Biology Faculty Publications

A longstanding challenge in stream ecology is to understand how landscape configuration organizes spatial patterns of ecosystem function via lateral groundwater connections. We combined laboratory bioassays and field additions of a metabolic tracer (resazurin) to test how groundwater-stream confluences, or "discrete riparian inflow points " (DRIPs), regulate heterotrophic microbial activity along a boreal stream. We hypothesized that DRIPs shape spatial patterns and rates of aquatic heterotrophic microbial activity by supplying labile dissolved organic matter (DOM) to streams. Laboratory bioassays showed that the potential influence of DRIPs on heterotrophic activity varied spatially and temporally, and was related to their DOM content …

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Alfred Russel Wallace Notes 25. Wallace And The 'Physical Environment'., Charles H. Smith Apr 2023

Alfred Russel Wallace Notes 25. Wallace And The 'Physical Environment'., Charles H. Smith

Faculty/Staff Personal Papers

Alfred Russel Wallace’s natural selection essay of 1858 has been held to frame a greater role for the physical environment in forcing selection regimes than we find in Darwin’s writings, but here that verdict is challenged by a re-examination of both the essay itself, and period usage of the term ‘physical.’

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Growing South Dakota (Spring 2023), College Of Agriculture, Food And Environmental Sciences Apr 2023

Growing South Dakota (Spring 2023), College Of Agriculture, Food And Environmental Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 3 Developing Climate-Smart Beef and Bison Commodities
[Page] 5 Joseph Cassady Leads CAFES as New Dean
[Page] 7 Inaugural Class of Klingbeil Scholars
[Page] 9 Jackrabbits to Future Veterinarians
[Page] 11 Protecting South Dakota’s Grasslands
[Page] 13 Growing Youth Programs
[Page] 15 Partnerships for Positive Growth
[Page] 17 Building Highly Effective Boards
[Page] 19 SDSU Extension Podcasts
[Page] 21 Providing Good Food for All
[Page] 23 Improving Seed Varieties
[Page] 25 CAFES Endowed Positions
[Page] 29 Jackrabbits Now and Then

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A Survey Of Captive Wild And Exotic Animal Training Programs In The Eastern United States, Savannah Atchison Apr 2023

A Survey Of Captive Wild And Exotic Animal Training Programs In The Eastern United States, Savannah Atchison

Senior Honors Theses

Methods of positive reinforcement as a successful means for animal training are the result of many years of research into operant conditioning and learning. However, current literature is unclear on the extent to which these methods are utilized in captive wild and exotic animal populations in the United States. Through phone interviews with animal trainers employed at zoos and wildlife rehabilitation centers in the eastern United States, the author determined that these facilities are currently utilizing positive reinforcement training methods which are proving to be a great benefit for all parties involved. They are enabling a variety of voluntary health …

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Understory Epiphyte Hydrology: Analyzing Water Storage Capacity Of Epiphytes Along An Elevational Gradient In Western Ecuadorian Cloud Forest, Angelina Dodge Apr 2023

Understory Epiphyte Hydrology: Analyzing Water Storage Capacity Of Epiphytes Along An Elevational Gradient In Western Ecuadorian Cloud Forest, Angelina Dodge

Independent Study Project (ISP) Collection

Epiphytes are defined as plants that grow on a host, often another plant, and acquire their nutrients and water from the atmosphere. As such is true, epiphyte composition is largely dependent upon atmospheric and thus climactic conditions. Due to high levels of atmospheric water availability that results from the frequent presence of mist, clouds, and high humidity, epiphytic plants grow and thus store water within the above ground region of the Andean cloud forest at levels higher than in any other ecosystem found in Ecuador. This study was done in hopes of revealing any trends of epiphytic water storage capacity …

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The Status Of Invasive Dusky Slug (Arion) Species In The Upper Great Lakes: A Molecular Approach, Olivia W. Hall Apr 2023

The Status Of Invasive Dusky Slug (Arion) Species In The Upper Great Lakes: A Molecular Approach, Olivia W. Hall

All NMU Master's Theses

I update the distribution of two cryptic slug species, Arion fuscus and Arion subfuscus, in the Upper Great Lakes of the United States using molecular identification methods. Arion fuscus has not previously been reported in the literature in this region, and Arion subfuscus has previously been reported as abundant. However, all previous distribution studies were determined using visual identification tools, which can result in misidentification between cryptic species. To molecularly re-examine these distribution maps, I used a mitochondrial ribosomal subunit 16S PCR amplification and subsequent SSpI and MfeI restriction enzyme digest to identify slug specimens. I collected slugs in …

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Discovering Dune: Essays On Frank Herbert’S Epic Saga., Edited By Dominic J. Nardi And N. Trevor Brierly, G. Connor Salter Apr 2023

Discovering Dune: Essays On Frank Herbert’S Epic Saga., Edited By Dominic J. Nardi And N. Trevor Brierly, G. Connor Salter

Mythlore: A Journal of J.R.R. Tolkien, C.S. Lewis, Charles Williams, and Mythopoeic Literature

G. Connor Salter reviews Discovering Dune: Essays on Frank Herbert’s Epic Saga, edited by Dominic J. Nardi and N. Trevor Brierly, considering its new contributions to studies of Frank Herbert's work. Essays included fit into four categories (Politics and Power, History and Religion, Biology and Ecology, and Philosophy, Choice and Ethics) and range from Herbert's use of ecology in Dune to how game theory may help explain certain characters' apparent ability to see the future. Discovering Dune also includes an appendix which contains the only up-to-date bibliography of Herbert's work (primary and secondary sources).

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Ecological Studies Of Wolves On Isle Royale, Sarah Hoy, Rolf O. Peterson, John A. Vucetich Apr 2023

Ecological Studies Of Wolves On Isle Royale, Sarah Hoy, Rolf O. Peterson, John A. Vucetich

Ecological Studies of Wolves on Isle Royale

Annual Report 2022-2023

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