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The Thr–His Connection On The Distal Heme Of Catalase-Related Hemoproteins: A Hallmark Of Reaction With Fatty Acid Hydroperoxides, Zahra Mashhadi, Marcia E. Newcomer, Alan R. Brash Nov 2016

The Thr–His Connection On The Distal Heme Of Catalase-Related Hemoproteins: A Hallmark Of Reaction With Fatty Acid Hydroperoxides, Zahra Mashhadi, Marcia E. Newcomer, Alan R. Brash

Faculty Publications

© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim This review focuses on a group of heme peroxidases that retain the catalase fold in structure, yet show little or no reaction with hydrogen peroxide. Instead of having a role in oxidative defense, these enzymes are involved in secondary metabolite biosynthesis. The prototypical enzyme is catalase-related allene oxide synthase, an enzyme that converts a specific fatty acid hydroperoxide to the corresponding allene oxide (epoxide). Other catalase-related enzymes form allylic epoxides, aldehydes, or a bicyclobutane fatty acid. In all catalases (including these relatives), a His residue on the distal face of the …

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Magazine Influence On Body Dissatisfaction: Fashion Vs. Health?, Paulina Swiatkowski Nov 2016

Magazine Influence On Body Dissatisfaction: Fashion Vs. Health?, Paulina Swiatkowski

Faculty Publications

Fashion magazines have been shown to have a negative relationship with body dissatisfaction and psychological health, while the effects of health magazines on body dissatisfaction and psychological health have mainly been studied with men. However, because of gender differences, health magazine consumption effects on men cannot be applied equally to women. Therefore, the present study uses sociocultural theory to study health magazine and possible similarities to fashion magazine effects on women’s body dissatisfaction and drive for thinness. Sociocultural attitude toward appearance is then explored as a mediator and potential moderator in the established relationship between magazine consumption and psychological health, …

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Syndepositional Diagenetic Control Of Molybdenum Isotope Variations In Carbonate Sediments From The Bahamas, Stephen J. Romaniello, Achim D. Herrmann, Ariel D. Anbar Nov 2016

Syndepositional Diagenetic Control Of Molybdenum Isotope Variations In Carbonate Sediments From The Bahamas, Stephen J. Romaniello, Achim D. Herrmann, Ariel D. Anbar

Faculty Publications

© 2016 Elsevier B.V. Molybdenum (Mo) isotope variations recorded in black shales provide important constraints on marine paleoredox conditions. However, suitable shales are not ubiquitous in the geologic record. Moreover, reliable reconstruction of Mo isotope records from shales requires deposition from a water column containing very high concentrations of sulfide-a condition which is both rare and difficult to verify with certainty when examining preserved sediments. The utility of Mo isotopic records could be improved if reconstructions were possible using alternative lithologies, such as marine carbonates, which are more abundant in the geologic record.Here, we focus on the role of early …

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Soil Microbial Biomass And Function Are Altered By 12 Years Of Crop Rotation, Marshall D. Mcdaniel, A. Stuart Grandy Nov 2016

Soil Microbial Biomass And Function Are Altered By 12 Years Of Crop Rotation, Marshall D. Mcdaniel, A. Stuart Grandy

Faculty Publications

Declines in plant diversity will likely reduce soil microbial biomass, alter microbial functions, and threaten the provisioning of soil ecosystem services. We examined whether increasing temporal plant biodiversity in agroecosystems (by rotating crops) can partially reverse these trends and enhance soil microbial biomass and function. We quantified seasonal patterns in soil microbial biomass, respiration rates, extracellular enzyme activity, and catabolic potential three times over one growing season in a 12-year crop rotation study at the W. K. Kellogg Biological Station LTER. Rotation treatments varied from one to five crops in a 3-year rotation cycle, but all soils were sampled under …

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Twitter Predicts Citation Rates Of Ecological Research, Brandon K. Peoples, Stephen R. Midway, Dana Sackett, Abigail Lynch, Patrick B. Cooney Nov 2016

Twitter Predicts Citation Rates Of Ecological Research, Brandon K. Peoples, Stephen R. Midway, Dana Sackett, Abigail Lynch, Patrick B. Cooney

Faculty Publications

The relationship between traditional metrics of research impact (e.g., number of citations) and alternative metrics (altmetrics) such as Twitter activity are of great interest, but remain imprecisely quantified. We used generalized linear mixed modeling to estimate the relative effects of Twitter activity, journal impact factor, and time since publication on Web of Science citation rates of 1,599 primary research articles from 20 ecology journals published from 2012-2014. We found a strong positive relationship between Twitter activity (i.e., the number of unique tweets about an article) and number of citations. Twitter activity was a more important predictor of citation rates than …

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Fluctuating Temperatures Alter Environmental Pathogen Transmission In A Daphnia–Pathogen System, Tad Dallas, John M. Drake Nov 2016

Fluctuating Temperatures Alter Environmental Pathogen Transmission In A Daphnia–Pathogen System, Tad Dallas, John M. Drake

Faculty Publications

© 2016 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. Environmental conditions are rarely constant, but instead vary spatially and temporally. This variation influences ecological interactions and epidemiological dynamics, yet most experimental studies examine interactions under constant conditions. We examined the effects of variability in temperature on the host–pathogen relationship between an aquatic zooplankton host (Daphnia laevis) and an environmentally transmitted fungal pathogen (Metschnikowia bicuspidata). We manipulated temperature variability by exposing all populations to mean temperatures of 20°C for the length of the experiments, but introducing periods of 1, 2, and 4 hr each day where …

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Peg3 Interacts With Kap1 Through Krab-A, Hongzhi He, An Ye, Hana Kim, Joomyeong Kim Nov 2016

Peg3 Interacts With Kap1 Through Krab-A, Hongzhi He, An Ye, Hana Kim, Joomyeong Kim

Faculty Publications

© 2016 He et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Peg3 (Paternally Expressed Gene 3) is an imprinted gene that encodes a zinc finger DNAbinding protein. Peg3 itself is localized in the middle of a KRAB-A (Kruppel-Associated Box) zinc finger gene cluster. The amino acid sequence encoded by its exon 7 also shows sequence similarity to that of KRAB-A, suggesting Peg3 as a KRAB-containing zinc finger gene. As predicted, the PEG3 …

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Pancreatic Β-Cell Production Of Cxcr3 Ligands Precedes Diabetes Onset, Susan J. Burke, Michael D. Karlstad, Adrianna E. Eder, Kellie M. Regal, Danhong Lu, David H. Burk, J. Jason Collier Nov 2016

Pancreatic Β-Cell Production Of Cxcr3 Ligands Precedes Diabetes Onset, Susan J. Burke, Michael D. Karlstad, Adrianna E. Eder, Kellie M. Regal, Danhong Lu, David H. Burk, J. Jason Collier

Faculty Publications

© 2016 International Union of Biochemistry and Molecular Biology Type 1 diabetes mellitus (T1DM) results from immune cell-mediated reductions in function and mass of the insulin-producing β-cells within the pancreatic islets. While the initial trigger(s) that initiates the autoimmune process is unknown, there is a leukocytic infiltration that precedes islet β-cell death and dysfunction. Herein, we demonstrate that genes encoding the chemokines CXCL9, 10, and 11 are primary response genes in pancreatic β-cells and are also elevated as part of the inflammatory response in mouse, rat, and human islets. We further established that STAT1 participates in the transcriptional control of …

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Membership Trends In The American Ornithologists' Union And The Evolving Role Of Professional Ornithological Societies, Nicholas A. Mason, Michael W. Butler, Jennifer C. Owen Nov 2016

Membership Trends In The American Ornithologists' Union And The Evolving Role Of Professional Ornithological Societies, Nicholas A. Mason, Michael W. Butler, Jennifer C. Owen

Faculty Publications

No abstract provided.

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Shared Phylogeographical Breaks In A Caribbean Coral Reef Sponge And Its Invertebrate Commensals, Melissa B. Debiasse, Vincent P. Richards, Mahmood S. Shivji, Michael E. Hellberg Nov 2016

Shared Phylogeographical Breaks In A Caribbean Coral Reef Sponge And Its Invertebrate Commensals, Melissa B. Debiasse, Vincent P. Richards, Mahmood S. Shivji, Michael E. Hellberg

Faculty Publications

© 2016 John Wiley & Sons Ltd Aim: To test whether phylogeographical barriers in the brooding sponge Callyspongia vaginalis match breaks previously identified in the Caribbean. We also compared patterns of subdivision in the sponge to those of three of its commensals, the broadcast spawning brittle star Ophiothrix suensonii and the brooding amphipods Leucothoe ashleyae and L. kensleyi, and tested whether any shared breaks arose simultaneously. Location: Florida, Bahamas and the Caribbean. Methods: Subdivision of C. vaginalis populations was inferred from one mitochondrial (COI) and six nuclear loci using clustering analyses. We identified phylogeographical breaks in the sponge and its …

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Getting A Grip At The Edge: Recolonization And Introgression In Eastern Pacific Porites Corals, Michael E. Hellberg, Carlos Prada, Maxine H. Tan, Zac H. Forsman, Iliana B. Baums Nov 2016

Getting A Grip At The Edge: Recolonization And Introgression In Eastern Pacific Porites Corals, Michael E. Hellberg, Carlos Prada, Maxine H. Tan, Zac H. Forsman, Iliana B. Baums

Faculty Publications

© 2016 John Wiley & Sons Ltd Aim: To infer species identity, population isolation, and geographical variation in inter-specific hybridization among corals of the genus Porites from the central and eastern tropical Pacific, with a focus on the timing of separation between populations of P. evermanni and P. lobata divided by the Eastern Pacific Barrier. Location: Hawaii, American Samoa, Panama and the Galapagos Islands of Ecuador. Methods: Maximum likelihood gene trees were obtained for mitochondrial DNA (COI), the internal transcribed spacer (ITS), and 5 single-copy nuclear (scn) gene regions. Allelic networks were used to group multi-locus scn data into species …

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Research Needs To Improve Hypertension Treatment And Control In African Americans, Paul K. Whelton, Paula T. Einhorn, Paul Muntner, Lawrence J. Appel, William C. Cushman, Ana V.Diez Roux, Keith C. Ferdinand, Mahboob Rahman, Herman A. Taylor, Jamy Ard, Donna K. Arnett, Barry L. Carter, Barry R. Davis, Barry I. Freedman, Lisa A. Cooper, Richard Cooper, Patrice Desvigne-Nickens, Nara Gavini, Alan S. Go, David J. Hyman, Paul L. Kimmel, Karen L. Margolis, Edgar R. Miller, Katherine T. Mills, George A. Mensah, Ann M. Navar, Gbenga Ogedegbe, Michael K. Rakotz, George Thomas, Jonathan N. Tobin, Jackson T. Wright, Sung Sug Sarah Yoon, Jeffrey A. Cutler Nov 2016

Research Needs To Improve Hypertension Treatment And Control In African Americans, Paul K. Whelton, Paula T. Einhorn, Paul Muntner, Lawrence J. Appel, William C. Cushman, Ana V.Diez Roux, Keith C. Ferdinand, Mahboob Rahman, Herman A. Taylor, Jamy Ard, Donna K. Arnett, Barry L. Carter, Barry R. Davis, Barry I. Freedman, Lisa A. Cooper, Richard Cooper, Patrice Desvigne-Nickens, Nara Gavini, Alan S. Go, David J. Hyman, Paul L. Kimmel, Karen L. Margolis, Edgar R. Miller, Katherine T. Mills, George A. Mensah, Ann M. Navar, Gbenga Ogedegbe, Michael K. Rakotz, George Thomas, Jonathan N. Tobin, Jackson T. Wright, Sung Sug Sarah Yoon, Jeffrey A. Cutler

Faculty Publications

No abstract provided.

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The Effect Of Demographic Correlations On The Stochastic Population Dynamics Of Perennial Plants, Aldo Compagnoni, Andrew J. Bibian, Brad M. Ochocki, Haldre S. Rogers, Emily L. Schultz, Michelle E. Sneck, Bret D. Elderd, Amy M. Iler, David W. Inouye, Hans Jacquemyn, Tom E.X. Miller Nov 2016

The Effect Of Demographic Correlations On The Stochastic Population Dynamics Of Perennial Plants, Aldo Compagnoni, Andrew J. Bibian, Brad M. Ochocki, Haldre S. Rogers, Emily L. Schultz, Michelle E. Sneck, Bret D. Elderd, Amy M. Iler, David W. Inouye, Hans Jacquemyn, Tom E.X. Miller

Faculty Publications

© 2016 by the Ecological Society of America. Understanding the influence of environmental variability on population dynamics is a fundamental goal of ecology. Theory suggests that, for populations in variable environments, temporal correlations between demographic vital rates (e.g., growth, survival, reproduction) can increase (if positive) or decrease (if negative) the variability of year-to-year population growth. Because this variability generally decreases long-term population viability, vital rate correlations may importantly affect population dynamics in stochastic environments. Despite long-standing theoretical interest, it is unclear whether vital rate correlations are common in nature, whether their directions are predominantly negative or positive, and whether they …

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Pragmatic Hydraulic Theory Predicts Stomatal Responses To Climatic Water Deficits, John S. Sperry, Yujie Wang, Brett T. Wolfe, D. Scott Mackay, William R.L. Anderegg, Nate G. Mcdowell, William T. Pockman Nov 2016

Pragmatic Hydraulic Theory Predicts Stomatal Responses To Climatic Water Deficits, John S. Sperry, Yujie Wang, Brett T. Wolfe, D. Scott Mackay, William R.L. Anderegg, Nate G. Mcdowell, William T. Pockman

Faculty Publications

Ecosystem models have difficulty predicting plant drought responses, partially from uncertainty in the stomatal response to water deficits in soil and atmosphere. We evaluate a ‘supply–demand’ theory for water-limited stomatal behavior that avoids the typical scaffold of empirical response functions. The premise is that canopy water demand is regulated in proportion to threat to supply posed by xylem cavitation and soil drying. The theory was implemented in a trait-based soil–plant–atmosphere model. The model predicted canopy transpiration (E), canopy diffusive conductance (G), and canopy xylem pressure (Pcanopy) from soil water potential (Psoil) and vapor pressure deficit (D). Modeled responses to D …

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Transformational Principles For Neon Sampling Of Mammalian Parasites And Pathogens: A Response To Springer And Colleagues, Joseph A. Cook, Stephen E. Greiman, Salvatore J. Agosta, Robert P. Anderson, Brian S. Arbogast, Robert J. Baker, Walter Boeger, Robert D. Bradley, Daniel R. Brooks, Rebecca Cole, John R. Demboski, Andrew P. Dobson, Jonathan L. Dunnum, Ralph P. Eckerlin, Jacob Esselstyn, Kurt E. Galbreath, John Hawdon, Hopi E. Hoekstra, Susan J. Kutz, Jessica E. Light, Link E. Olson, Bruce D. Patterson, James L. Patton, Anna J. Phillips, Eric Rickart, Duke S. Rogers, Mark E. Siddall, Vasyl V. Tkach, Eric P. Hoberg Nov 2016

Transformational Principles For Neon Sampling Of Mammalian Parasites And Pathogens: A Response To Springer And Colleagues, Joseph A. Cook, Stephen E. Greiman, Salvatore J. Agosta, Robert P. Anderson, Brian S. Arbogast, Robert J. Baker, Walter Boeger, Robert D. Bradley, Daniel R. Brooks, Rebecca Cole, John R. Demboski, Andrew P. Dobson, Jonathan L. Dunnum, Ralph P. Eckerlin, Jacob Esselstyn, Kurt E. Galbreath, John Hawdon, Hopi E. Hoekstra, Susan J. Kutz, Jessica E. Light, Link E. Olson, Bruce D. Patterson, James L. Patton, Anna J. Phillips, Eric Rickart, Duke S. Rogers, Mark E. Siddall, Vasyl V. Tkach, Eric P. Hoberg

Faculty Publications

No abstract provided.

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The Impact Of Traumatic Life Events: Reactions And Resilience – Part Ii, Harvey J. Burnett Jr Nov 2016

The Impact Of Traumatic Life Events: Reactions And Resilience – Part Ii, Harvey J. Burnett Jr

Faculty Publications

No abstract provided.

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The Negative Effects Of Pathogen-Infected Prey On Predators: A Meta-Analysis, Andrew J. Flick, Miguel A. Acevedo, Bret D. Elderd Nov 2016

The Negative Effects Of Pathogen-Infected Prey On Predators: A Meta-Analysis, Andrew J. Flick, Miguel A. Acevedo, Bret D. Elderd

Faculty Publications

© 2016 The Authors Intra-guild predation (IGP) – where a top predator (IGPred) consumes both a basal resource and a competitor for that resource (IGPrey) – has become a fundamental part of understanding species interactions and community dynamics. IGP communities composed of intraguild predators and prey have been well studied; however, we know less about IGP communities composed of predators, pathogens, and resources. Resource quality plays an important role in community dynamics and may influence IGP dynamics as well. We conducted a meta-analysis on predator–pathogen–resource communities to determine whether resource quality mediated by the pathogen affected predator life-history traits and …

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Fluctuating Asymmetry In Two Common Freshwater Fishes As A Biological Indicator Of Urbanization And Environmental Stress Within The Middle Chattahoochee Watershed, William I. Lutterschmidt, Samantha L. Martin, Jacob F. Schaefer Nov 2016

Fluctuating Asymmetry In Two Common Freshwater Fishes As A Biological Indicator Of Urbanization And Environmental Stress Within The Middle Chattahoochee Watershed, William I. Lutterschmidt, Samantha L. Martin, Jacob F. Schaefer

Faculty Publications

Deviations in bilateral symmetry or fluctuating asymmetry of an organism may result under environmental stressors that reduce developmental homeostasis and stability. Anthropogenic stressors such as increased urbanization can negatively impact environmental quality of aquatic ecosystems. Researchers have stressed the value in finding easy, accurate and inexpensive methods for assessing potential stress within ecosystems. Here we use fluctuating asymmetry (FA) as a useful quantitative tool in assessing the environmental quality and potential urban-based stressors within eight creeks of the Bull and Upatoi Creeks Watershed within the larger watershed of the Middle Chattahoochee. Using Geographic Information System (GIS), we characterize land-use patterns …

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A Polyaniline-Based Sensor Of Nucleic Acids, Partha Sengupta, Jared Gloria, Marcus K. Parker, Alex S. Flynt Nov 2016

A Polyaniline-Based Sensor Of Nucleic Acids, Partha Sengupta, Jared Gloria, Marcus K. Parker, Alex S. Flynt

Faculty Publications

Detection of nucleic acids is at the center of diagnostic technologies used in research and the clinic. Standard approaches used in these technologies rely on enzymatic modification that can introduce bias and artifacts. A critical element of next generation detection platforms will be direct molecular sensing, thereby avoiding a need for amplification or labels. Advanced nanomaterials may provide the suitable chemical modalities to realize label-free sensors. Conjugated polymers are ideal for biological sensing, possessing properties compatible with biomolecules and exhibit high sensitivity to localized environmental changes. In this article, a method is presented for detecting nucleic acids using the electroconductive …

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A General Elliptic Nonlinear System Of Multiple Functions With Application, Timothy Robertson, Joon Hyuk Kang Nov 2016

A General Elliptic Nonlinear System Of Multiple Functions With Application, Timothy Robertson, Joon Hyuk Kang

Faculty Publications

The purpose of this paper is to give a sufficient condition for the existence, nonexistence and uniqueness of positive solutions to a rather general type of elliptic system of the Dirichlet problem on a bounded domain Ω in Rn . We also investigate the effects of perturbation on the positive solutions to the system. The techniques used in this paper are upper-lower solutions, eigenvalues of operators, the maximum principles and spectrum estimates. The arguments also rely on some detailed properties for the solution of logistic equations. This result yields an algebraically computable criterion for the positive coexistence of competing species …

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Adulthood In Law And Culture, Vivian E. Hamilton Nov 2016

Adulthood In Law And Culture, Vivian E. Hamilton

Faculty Publications

Young people today come of age in a cultural and economic milieu that prolongs their attainment of the traditional markers of adulthood. Their subjective conceptions of the transition to adulthood also depart radically from the traditional conception, with its emphasis on discrete transition events (including marriage and entry into the workforce). Instead, the modern transition to adulthood is a gradual process comprising the acquisition of general capabilities, rather than the achievement of externally constructed events. The state-established age of legal majority stands in marked contrast to this gradual and prolonged process. Not only does it categorically establish the inception of …

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The Mirror-Based Eyes Of Scallops Demonstrate A Light-Evoked Pupillary Response, M. Desmond Ramirez, Autum N. Pairett, M. Sabrina Pankey, Jeanne M. Serb, Daniel Isaac Speiser, Andrew J. Swafford, Todd H. Oakley Oct 2016

The Mirror-Based Eyes Of Scallops Demonstrate A Light-Evoked Pupillary Response, M. Desmond Ramirez, Autum N. Pairett, M. Sabrina Pankey, Jeanne M. Serb, Daniel Isaac Speiser, Andrew J. Swafford, Todd H. Oakley

Faculty Publications

The opsin gene family encodes key proteins animals use to sense light and has expanded dramatically as it originated early in animal evolution. Understanding the origins of opsin diversity can offer clues to how separate lineages of animals have repurposed different opsin paralogs for different light-detecting functions. However, the more we look for opsins outside of eyes and from additional animal phyla, the more opsins we uncover, suggesting we still do not know the true extent of opsin diversity, nor the ancestry of opsin diversity in animals. To estimate the number of opsin paralogs present in both the last common …

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Condition Of Larval Spanish Mackerel Scomberomorus Maculatus In Relation To The Deepwater Horizon Oil Spill, John Timothy Ransom, J.E. Filbrun, Frank J. Hernandez Jr. Oct 2016

Condition Of Larval Spanish Mackerel Scomberomorus Maculatus In Relation To The Deepwater Horizon Oil Spill, John Timothy Ransom, J.E. Filbrun, Frank J. Hernandez Jr.

Faculty Publications

The Deepwater Horizon oil spill (DWHOS) coincided with the pelagic larval stages of many valued commercial and recreational fishes in the northern Gulf of Mexico. Larval fish survival and eventual recruitment into adult populations may have been impacted directly through toxicity or indirectly through changes in the planktonic food web caused by the release of oil and chemical dispersants during the DWHOS event. Using samples from a long-term ichthyoplankton survey off the coast of Alabama, USA, in a region impacted by the DWHOS, the abundance and condition of larval Spanish mackerel Scomberomorus maculatus were compared during summer months in years …

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Block Ionomer Complexes Consisting Of Sirna And ARaft-Synthesized Hydrophilic-Block-Cationic Copolymers Ii: The Influence Of Cationic Block Charge Density On Gene Suppression, Keith Hampton Parsons, Andrew Christopher Holley, Gabrielle A. Munn, Alex S. Flynt, Charles L. Mccormick Oct 2016

Block Ionomer Complexes Consisting Of Sirna And ARaft-Synthesized Hydrophilic-Block-Cationic Copolymers Ii: The Influence Of Cationic Block Charge Density On Gene Suppression, Keith Hampton Parsons, Andrew Christopher Holley, Gabrielle A. Munn, Alex S. Flynt, Charles L. Mccormick

Faculty Publications

Block ionomer complex (BIC)–siRNA interactions and effectiveness in cell transfection are reported. Aqueous RAFT polymerization was used to prepare a series of hydrophilic-block-cationic copolymers in which the cationic block statistically incorporates increasing amounts of neutral, hydrophilic monomer such that the number of cationic groups remains unchanged but the cationic charge density is diluted along the polymer backbone. Reduced charge density decreases the electrostatic binding strength between copolymers and siRNA with the goal of improving siRNA release after targeted cellular delivery. However, lower binding strength resulted in decreased transfection and RNA interference pathway activation, leading to reduced gene knockdown. Enzymatic siRNA …

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Impact Of Different Fecal Processing Methods On Assessments Of Bacterial Diversity In The Human Intestine, Yu Hsin Hsieh, Courtney M. Peterson, Anne Raggio, Michael J. Keenan, Roy J. Martin, Eric Ravussin, Maria L. Marco Oct 2016

Impact Of Different Fecal Processing Methods On Assessments Of Bacterial Diversity In The Human Intestine, Yu Hsin Hsieh, Courtney M. Peterson, Anne Raggio, Michael J. Keenan, Roy J. Martin, Eric Ravussin, Maria L. Marco

Faculty Publications

The intestinal microbiota are integral to understanding the relationships between nutrition and health. Therefore, fecal sampling and processing protocols for metagenomic surveys should be sufficiently robust, accurate, and reliable to identify the microorganisms present. We investigated the use of different fecal preparation methods on the bacterial community structures identified in human stools. Complete stools were collected from six healthy individuals and processed according to the following methods: (i) randomly sampled fresh stool, (ii) fresh stool homogenized in a blender for 2 min, (iii) randomly sampled frozen stool, and (iv) frozen stool homogenized in a blender for 2 min, or (v) …

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Sources, Distributions And Dynamics Of Dissolved Organic Matter In The Canada And Makarov Basins, Yuan Shen, Ronald Benner, Lisa L. Robbins, Jonathan G. Wynn Oct 2016

Sources, Distributions And Dynamics Of Dissolved Organic Matter In The Canada And Makarov Basins, Yuan Shen, Ronald Benner, Lisa L. Robbins, Jonathan G. Wynn

Faculty Publications

A comprehensive survey of dissolved organic carbon (DOC) and chromophoric dissolved organic matter (CDOM) was conducted in the Canada and Makarov Basins and adjacent seas during 2010–2012 to investigate the dynamics of dissolved organic matter (DOM) in the Arctic Ocean. Sources and distributions of DOM in polar surface waters were very heterogeneous and closely linked to hydrological conditions. Canada Basin surface waters had relatively low DOC concentrations (69 ± 6 μmol L−1), CDOM absorption (a325: 0.32 ± 0.07 m−1) and CDOM-derived lignin phenols (3 ± 0.4 nmol L−1), and high spectral slope values (S275–295: 31.7 ± …

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Methodology For Simulation And Analysis Of Complex Adaptive Supply Network Structure And Dynamics Using Information Theory, Joshua V. Rodewald, John M. Colombi, Kyle F. Oyama, Alan W. Johnson Oct 2016

Methodology For Simulation And Analysis Of Complex Adaptive Supply Network Structure And Dynamics Using Information Theory, Joshua V. Rodewald, John M. Colombi, Kyle F. Oyama, Alan W. Johnson

Faculty Publications

Supply networks existing today in many industries can behave as complex adaptive systems making them more difficult to analyze and assess. Being able to fully understand both the complex static and dynamic structures of a complex adaptive supply network (CASN) are key to being able to make more informed management decisions and prioritize resources and production throughout the network. Previous efforts to model and analyze CASN have been impeded by the complex, dynamic nature of the systems. However, drawing from other complex adaptive systems sciences, information theory provides a model-free methodology removing many of those barriers, especially concerning complex network …

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Sources, Distributions, And Dynamics Of Dissolved Organic Matter In The Canada And Makarov Basins, Yuan Shen, Ronald Benner, Lisa Robbins, Jonathan Wynn Oct 2016

Sources, Distributions, And Dynamics Of Dissolved Organic Matter In The Canada And Makarov Basins, Yuan Shen, Ronald Benner, Lisa Robbins, Jonathan Wynn

Faculty Publications

A comprehensive survey of dissolved organic carbon (DOC) and chromophoric dissolved organic matter (CDOM) was conducted in the Canada and Makarov Basins and adjacent seas during 2010–2012 to investigate the dynamics of dissolved organic matter (DOM) in the Arctic Ocean. Sources and distributions of DOM in polar surface waters were very heterogeneous and closely linked to hydrological conditions. Canada Basin surface waters had relatively low DOC concentrations (69 ± 6 μmol L−1), CDOM absorption (a325: 0.32 ± 0.07 m−1) and CDOM-derived lignin phenols (3 ± 0.4 nmol L−1), and high spectral slope values (S275–295: 31.7 ± …

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Coastal Wetland Response To Sea-Level Rise In A Fluvial Estuarine System, Karim Alizad, Scott C. Hagen, James T. Morris, Stephen C. Medeiros, Matthew V. Bilskie, John F. Weishampel Oct 2016

Coastal Wetland Response To Sea-Level Rise In A Fluvial Estuarine System, Karim Alizad, Scott C. Hagen, James T. Morris, Stephen C. Medeiros, Matthew V. Bilskie, John F. Weishampel

Faculty Publications

Coastal wetlands are likely to lose productivity under increasing rates of sea-level rise (SLR). This study assessed a fluvial estuarine salt marsh system using the Hydro-MEM model under four SLR scenarios. The Hydro-MEM model was developed to apply the dynamics of SLR as well as capture the effects associated with the rate of SLR in the simulation. Additionally, the model uses constants derived from a 2-year bioassay in the Apalachicola marsh system. In order to increase accuracy, the lidar-based marsh platform topography was adjusted using Real Time Kinematic survey data. A river inflow boundary condition was also imposed to simulate …

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Coastal Wetland Response To Sea‐Level Rise In A Fluvial Estuarine System, Karim Alizad, Scott C. Hagen, James T. Morris, Stephen C. Medeiros, Matthew V. Bilskie, John F. Weishampel Oct 2016

Coastal Wetland Response To Sea‐Level Rise In A Fluvial Estuarine System, Karim Alizad, Scott C. Hagen, James T. Morris, Stephen C. Medeiros, Matthew V. Bilskie, John F. Weishampel

Faculty Publications

Coastal wetlands are likely to lose productivity under increasing rates of sea‐level rise (SLR). This study assessed a fluvial estuarine salt marsh system using the Hydro‐MEM model under four SLR scenarios. The Hydro‐MEM model was developed to apply the dynamics of SLR as well as capture the effects associated with the rate of SLR in the simulation. Additionally, the model uses constants derived from a 2‐year bioassay in the Apalachicola marsh system. In order to increase accuracy, the lidar‐based marsh platform topography was adjusted using Real Time Kinematic survey data. A river inflow boundary condition was also imposed to simulate …

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