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The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen 2018 Virginia Institute of Marine Science

The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen

Articles

Although both local processes (photosynthesis, respiration, grazing, and settling), and transport processes (advective transport and diffusive transport) significantly affect local phytoplankton dynamics, it is difficult to separate their contributions and to investigate the relative importance of each process to the local variability of phytoplankton biomass over different timescales. A method of using the transport rate is introduced to quantify the contribution of transport processes. By combining the time-varying transport rate and high-frequency observed chlorophyll a data, we can explicitly examine the impact of local and transport processes on phytoplankton biomass over a range of timescales from hourly to annually. For ...


The Manuscript Works Of S. Fred Prince (1857-1951), Sarah Burke Cahalan, Jason W. Dean 2018 University of Dayton

The Manuscript Works Of S. Fred Prince (1857-1951), Sarah Burke Cahalan, Jason W. Dean

Marian Library/IMRI Faculty Publications

S. Fred Prince, a botanical illustrator and amateur scientist, is a largely unknown artist whose work on the American landscape demonstrates his eligibility to be considered in the lineage of self-taught illustrator-naturalists such as Mark Catesby and Genevieve Jones. In this article, we present a survey of extant Prince materials identified at time of writing, describing their contents and physical characteristics. Beyond this survey and description, we also provide a biographical sketch and timeline of Prince's life.


Altering Oligomerization Of Epha2 Via Mutations In The Intracellular Domain, Ryan W. Lingerak 2018 The University of Akron

Altering Oligomerization Of Epha2 Via Mutations In The Intracellular Domain, Ryan W. Lingerak

Honors Research Projects

Eph receptor tyrosine kinases (RTKs) are activated by membrane-bound ligands called ephrins. Eph RTKs are divided into two subclasses, each activated by a specific classes of the ligand ephrin. The overexpression of Eph receptors is correlated to cancer cell metastasis in several different types of cancers. Studies with the EphA2 extracellular domain (ECD) and ephrinA1 ligand have shown that upon binding of ephrin to the receptor, EphA2 undergoes increased oligomerization and activation. This indicates that oligomerization is intimately connected to kinase activity. High resolution crystal structures of the EphA2 ECD have revealed some details of these ligand bound oligomers, as ...


Potential For Climate Induced Methane Hydrate Dissociation, Graham MacWilliams 2018 Pomona College

Potential For Climate Induced Methane Hydrate Dissociation, Graham Macwilliams

Pomona Senior Theses

Methane hydrates are frozen deposits of methane and water found in high pressure or low temperature sediments. When these deposits destabilize, large quantities of methane can be emitted into the atmosphere. This is significant to climate change because methane has 25 times more greenhouse gas potential than Carbon Dioxide. Worldwide, it is estimated there are between 2500 and 10000 gigatons of methane stored in hydrate deposits. This represents more carbon than all fossil fuels on Earth. It is estimated that between 200 and 2000 gigatons of methane are stored in hydrates in Arctic waters acutely vulnerable to greenhouse warming. Over ...


Economic Growth And Changes In Forested Areas In Southeast Asia: Is Environmental Kuznets Curve Still Relevant?, Lan Thi Ngoc Nguyen 2018 Hollins University

Economic Growth And Changes In Forested Areas In Southeast Asia: Is Environmental Kuznets Curve Still Relevant?, Lan Thi Ngoc Nguyen

Undergraduate Honors Theses

The environmental history of the twentieth century in Southeast Asia reveals tremendous loss of forested areas as a consequence of unprecedented economic transformations and unrestrained globalization. Featuring some of the world’s fastest-growing economies, Southeast Asia has been experiencing fundamental changes in its economic structure, sociopolitical institutions, and the rate of natural resources extraction and depletion, including deforestation. This study reexamines evidence of the (EKC) hypothesis in light of the deforestation the above region experienced over the period 1990-2013. We use the change in forest cover as an indicator for environmental degradation. A panel co-integration approach is invoked to investigate ...


Seasonal Variation Of Macrolide Resistance Gene Abundances In The South Fork Iowa River Watershed, Elizabeth Luby Rieki, Thomas B. Moorman, Elizabeth L. Douglass, Michelle L. Soupir 2018 Iowa State University

Seasonal Variation Of Macrolide Resistance Gene Abundances In The South Fork Iowa River Watershed, Elizabeth Luby Rieki, Thomas B. Moorman, Elizabeth L. Douglass, Michelle L. Soupir

Agricultural and Biosystems Engineering Publications

The Midwestern United States is dominated by agricultural production with high concentrations of swine, leading to application of swine manure onto lands with artificial subsurface drainage. Previous reports have indicated elevated levels of antibiotic resistance genes (ARGs) in surface water and groundwater around confined animal feeding operations which administer antimicrobials. While previous studies have examined the occurrence of ARGs around confined swine feeding operations, little information is known how their transport from tile-drained fields receiving swine manure application impacts downstream environments. To further our knowledge in this area, water samples were collected from five locations in the agriculturally dominated South ...


The Effects Of Continuous Insulin Pump Therapy On Glycemic Control In Pregnant Type 1 Diabetics, Kimberly Kelsey 2017 Dominican University of California

The Effects Of Continuous Insulin Pump Therapy On Glycemic Control In Pregnant Type 1 Diabetics, Kimberly Kelsey

Senior Theses and Capstone Projects

Type 1 Diabetics have various ways of managing their diabetes that have been studied for their effectiveness. Pregnancy in the Type 1 Diabetic has been understudied. It is known that Diabetics in general have poorer pregnancy outcomes because of poor glycemic control. This coupled with the fact that the body needs 3-4 times more insulin as pregnancy comes to an end makes managing blood glucose levels challenging for diabetics (Lowdermilk, 2016, p. 689). For the Type 1 Diabetic, there are two main ways to control diabetes: multiple daily injections using at least two type of insulin and continuous subcutaneous insulin ...


Tea Induction Of Cyp6a8 Promoter In Drosophila Melanogaster, Fiona Retzer 2017 University of Tennessee, Knoxville

Tea Induction Of Cyp6a8 Promoter In Drosophila Melanogaster, Fiona Retzer

University of Tennessee Honors Thesis Projects

No abstract provided.


The Effect Of Preflood Nitrogen And Flood Establishment Timing On Rice Development, Nitrogen Uptake And Grain Yield, Tyler Richmond 2017 University of Arkansas, Fayetteville

The Effect Of Preflood Nitrogen And Flood Establishment Timing On Rice Development, Nitrogen Uptake And Grain Yield, Tyler Richmond

Theses and Dissertations

Urea-N fertilizer is typically applied at the 5-leaf stage to rice (Oryza sativa L.) grown in a dry-seeded, delayed-flood production system. How long the preflood-N can be delayed without adverse effects on yield potential is poorly understood. The research objective was to determine the effects of preflood-N application and flood establishment timing on aboveground-N content, 50% heading, yield components, and grain yield. Trials were established on silt loam soils at the Pine Tree Research Station (PTRS) and Rice Research and Extension Center (RREC) during 2015 and 2016. Urea-N was applied at 0, 45, 90, 135, and 180 kg N ha-1 ...


Importance Of Scale, Land Cover, And Weather On The Abundance Of Bird Species In A Managed Forest, Alexis R. Grinde, Gerald J. Niemi, Brian R. Sturtevant, Hannah Panci, Wayne Thogmartin, Peter Wolter 2017 University of Minnesota - Duluth

Importance Of Scale, Land Cover, And Weather On The Abundance Of Bird Species In A Managed Forest, Alexis R. Grinde, Gerald J. Niemi, Brian R. Sturtevant, Hannah Panci, Wayne Thogmartin, Peter Wolter

Natural Resource Ecology and Management Publications

Climate change and habitat loss are projected to be the two greatest drivers of biodiversity loss over the coming century. While public lands have the potential to increase regional resilience of bird populations to these threats, long-term data are necessary to document species responses to changes in climate and habitat to better understand population vulnerabilities. We used generalized linear mixed models to determine the importance of stand-level characteristics, multi-scale land cover, and annual weather factors to the abundance of 61 bird species over a 20-year time frame in Chippewa National Forest, Minnesota, USA. Of the 61 species modeled, we were ...


Plasma Fibroblast Growth Factor-21 Levels In Patients With Inborn Errors Of Metabolism, Brian Kirmse, Juan Cabrera-Luque, Omar Ayyub, Kristina Cusmano-Ozog, Kimberly A. Chapman, Marshall L. Summar 2017 George Washington University

Plasma Fibroblast Growth Factor-21 Levels In Patients With Inborn Errors Of Metabolism, Brian Kirmse, Juan Cabrera-Luque, Omar Ayyub, Kristina Cusmano-Ozog, Kimberly A. Chapman, Marshall L. Summar

Pediatrics Faculty Publications

Fibroblast growth factor-21 (FGF21) levels are elevated in patients with primary mitochondrial disorders but have not been studied in patients with inborn errors of metabolism (IEM) known to have secondary mitochondrial dysfunction. We measured plasma FGF21 by ELISA in patients with and without IEM. FGF21 levels were higher in patients with IEM compared to without IEM (370 pg/dL vs. 0–65 pg/dL). Further study of FGF21 as a biomarker in IEM is warranted.


Superresolution Imaging Identifies That Conventional Trafficking Pathways Are Not Essential For Endoplasmic Reticulum To Outer Mitochondrial Membrane Protein Transport., Kyle Salka, Shivaprasad Bhuvanendran, Kassandra Wilson, Petros Bozidis, Mansi Mehta, Kristin Rainey, Hiromi Sesaki, George H Patterson, Jyoti K. Jaiswal, Anamaris M. Colberg-Poley 2017 George Washington University

Superresolution Imaging Identifies That Conventional Trafficking Pathways Are Not Essential For Endoplasmic Reticulum To Outer Mitochondrial Membrane Protein Transport., Kyle Salka, Shivaprasad Bhuvanendran, Kassandra Wilson, Petros Bozidis, Mansi Mehta, Kristin Rainey, Hiromi Sesaki, George H Patterson, Jyoti K. Jaiswal, Anamaris M. Colberg-Poley

Genomics and Precision Medicine Faculty Publications

Most nuclear-encoded mitochondrial proteins traffic from the cytosol to mitochondria. Some of these proteins localize at mitochondria-associated membranes (MAM), where mitochondria are closely apposed with the endoplasmic reticulum (ER). We have previously shown that the human cytomegalovirus signal-anchored protein known as viral mitochondria-localized inhibitor of apoptosis (vMIA) traffics from the ER to mitochondria and clusters at the outer mitochondrial membrane (OMM). Here, we have examined the host pathways by which vMIA traffics from the ER to mitochondria and clusters at the OMM. By disruption of phosphofurin acidic cluster sorting protein 2 (PACS-2), mitofusins (Mfn1/2), and dynamin related protein 1 ...


Shallow Aggregate Ebb-And-Flow System For Greenhouse Lettuce Production, Joseph Chidiac 2017 University of Arkansas, Fayetteville

Shallow Aggregate Ebb-And-Flow System For Greenhouse Lettuce Production, Joseph Chidiac

Theses and Dissertations

A novel soilless technique for the production of lettuce was developed and evaluated for its viability for ornamental greenhouse growers adapting their ebb-and-flood irrigation benching systems to diversify into growing lettuce, without having to purchase the conventional nutrient film technique (NFT) or deep flow technique (DFT) hydroponic systems. The experimental design was a three by four factorial, with three treatments for aggregate depth (19, 38, and 57 mm) and four treatments for irrigation frequency (once every 1, 2, 4, or 8 hours), for a total of twelve treatment combinations. Each treatment was replicated three times in a randomized complete block ...


List Of The Lepidoptera Of Black Sturgeon Lake, Northwestern Ontario, And Dates Of Adult Occurrence, C. J. Sanders 2017 Forestry Canada

List Of The Lepidoptera Of Black Sturgeon Lake, Northwestern Ontario, And Dates Of Adult Occurrence, C. J. Sanders

The Great Lakes Entomologist

From May to September each year from 1960 through 1968, a collection of Lepidoptera was made at Black Sturgeon Lake, northwestern Ontario, from speci­ mens captured in a light trap and from specimens netted during the day. A total of 564 species was recorded from 70 families. A list of the species with dates of capture is presented.


Acorns As Breeding Sites For Chymomyza Amoena (Loew) (Diptera: Drosophilidae) In Virginia And Michigan, Henretta Trent Band 2017 Michigan State University

Acorns As Breeding Sites For Chymomyza Amoena (Loew) (Diptera: Drosophilidae) In Virginia And Michigan, Henretta Trent Band

The Great Lakes Entomologist

Chymomyza amoena is the only chymomyzid fly emerging from white oak acorns in Virginia. An average of 2-3 adult flies emerged from a single acorn in July while emergence declined to 0.4 adults/acorns in September. In fall, Drosophila melanogaster was also present. The incidence of drosophilid (Drosophila, Chymomyza) larvae in parasitized acorns in Virginia (400/0) in autumn was significantly greater than in Michigan (14%). The Chymomyza larvae present in the parasitized acorns in Michigan most likely were C. amoena, from the known adaptation of this species in Michigan to frass-breeding.


Geographic Distribution Of Siphonaptera Collected From Small Mammals On Lake Michigan Islands, William C. Scharf 2017 Northwestern Michigan College

Geographic Distribution Of Siphonaptera Collected From Small Mammals On Lake Michigan Islands, William C. Scharf

The Great Lakes Entomologist

The distribution of ten flea species collected from five small mammal host species on 13 Lake Michigan islands is described. Four new eastern and southern records for Hystrichopsylla dippiei Rothschild are given. Speculative suggestions are made regarding dispersal routes of some of the small mammal host species, and the distribution of flea species from Peromyscus maniculatus gracilis LeConte is dis- cussed in the context of island biogeography theory.


Host Plant Suitability And A Test Of The Feeding Specialization Hypothesis Using Papilio Cresphontes (Lepidoptera: Papilionidae), J. Mark Scriber, Robert V. Dowell 2017 Michigan State University

Host Plant Suitability And A Test Of The Feeding Specialization Hypothesis Using Papilio Cresphontes (Lepidoptera: Papilionidae), J. Mark Scriber, Robert V. Dowell

The Great Lakes Entomologist

The concept that host plant favorites would be used for more rapid and/or efficient growth of the "locally adapted" individuals was tested in a preliminary way using the giant swallowtail butterfly, Papilio cresphontes. Populations feeding only on northern prickly ash, Zanthoxylum americanum (from Wisconsin), primarily (or exclusively) on hoptree, Ptelea trifoliata (in Ohio) and on lime prickly ash, Z. fagara, or Citrus, (in Florida) were compared on alternate hosts and on their actual local hosts under controlled environmental conditions. While the results with final instar larvae generally support the feeding specialization hypothesis with regard to more rapid and/or ...


Acrobasis Shoot Moth (Lepidoptera: Pyralidae) Infestation-Tree Height Link In A Young Black Walnut Plantation, George Rink, Barbara C. Weber, D. Michael Baines, David T. Funk 2017 USDA Forest Service

Acrobasis Shoot Moth (Lepidoptera: Pyralidae) Infestation-Tree Height Link In A Young Black Walnut Plantation, George Rink, Barbara C. Weber, D. Michael Baines, David T. Funk

The Great Lakes Entomologist

Acrobasis shoot moth infestations were evaluated in a young black walnut progeny test for 4 years, from ages 3 to 6. Infestation levels were greatest on the largest trees in the fourth and fifth year after plantation establishment, and were declining by the sixth year. Acrobasis infestation appears to be a problem primarily on young trees less than 2.5 m in height. There was no evidence for genetic resistance to Acrobasis infestation in black walnut.


No Intersexual Differences In Host Size And Species Usage In Spalangia Endius (Hymenoptera: Pteromalidae), B. H. King 2017 Purdue University

No Intersexual Differences In Host Size And Species Usage In Spalangia Endius (Hymenoptera: Pteromalidae), B. H. King

The Great Lakes Entomologist

Spalangia endius were collected from fly pupae, primarily house fly and stable fly, from a poultry house in Indiana. Male and female wasps did not differ within and across host species in host size usage. Also, despite stable fly pupae being significantly smaller than house fly pupae, the proportion of male wasps emerging from the two host species was similar.


Acoustic Signals Of Graminella Nigrifrons (Homoptera: Cicadellidae), S. E. Heady, L. R. Nault 2017 Ohio State University

Acoustic Signals Of Graminella Nigrifrons (Homoptera: Cicadellidae), S. E. Heady, L. R. Nault

The Great Lakes Entomologist

The deltocephaline leafhopper, Graminella nigrifrons, produces low intensity sub- strate transmitted vibrations (signals) to facilitate location of virgin females by males during courtship. In the laboratory, signals produced on maize leaves were received by a phonographic cartridge, amplified, and analyzed on an oscillograph and sonograph. Male calls, that are produced spontaneously, are complex, consisting of three consecutive sections. Section 1 consists of ca. 3 sec of irregular clicks. Section 2 has ca. 4 sec of repeated phrases consisting of a continuous series of 0.4 sec chirps and a roll. Section 3 consists of ca. 5 sec of an intermittent ...


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