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Solving Conservation's Money Problems, Brian F. Snyder Feb 2015

Solving Conservation's Money Problems, Brian F. Snyder

Faculty Publications

No abstract provided.

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Ant Community Structure And Response To Disturbances On Coastal Dunes Of Gulf Of Mexico, Xuan Chen, Benjamin Adams, Cody Bergeron, Alexander Sabo, Linda Hooper-Bùi Feb 2015

Ant Community Structure And Response To Disturbances On Coastal Dunes Of Gulf Of Mexico, Xuan Chen, Benjamin Adams, Cody Bergeron, Alexander Sabo, Linda Hooper-Bùi

Faculty Publications

Coastal dunes are complex and fragile ecosystems. The decrease in environmental stressors from sea to inland creates zonation patterns of habitats, which support high biodiversity. Although coastal dunes have been examined in primary succession studies for more than 100 years, invertebrates have received much less attention than other taxa. In this study, we examined ant community composition and its relationship with vegetation structure on dunes, and used ants as indicators to reveal the influence of anthropogenic disturbances on these habitats. Quadrat sampling, hand collecting, and beating plants were used to sample ants on coastal dunes fringing the northern Gulf of …

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Relative Abundance Of And Composition Within Fungal Orders Differ Between Cheatgrass (Bromus Tectorum) And Sagebrush (Artemisia Tridentate)-Associated Soils, Carolyn F. Weber, Gary M. King, Ken Aho Jan 2015

Relative Abundance Of And Composition Within Fungal Orders Differ Between Cheatgrass (Bromus Tectorum) And Sagebrush (Artemisia Tridentate)-Associated Soils, Carolyn F. Weber, Gary M. King, Ken Aho

Faculty Publications

© 2015 Weber et al. Nonnative Bromus tectorum (cheatgrass) is decimating sagebrush steppe, one of the largest ecosystems in the Western United States, and is causing regional-scale shifts in the predominant plant-fungal interactions. Sagebrush, a native perennial, hosts arbuscular mycorrhizal fungi (AMF), whereas cheatgrass, a winter annual, is a relatively poor host of AMF. This shift is likely intertwined with decreased carbon (C)-sequestration in cheatgrass-invaded soils and alterations in overall soil fungal community composition and structure, but the latter remain unresolved. We examined soil fungal communities using high throughput amplicon sequencing (ribosomal large subunit gene) in the 0-4 cm and …

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Integrin Αiiβ3 Transmembrane Domain Separation Mediates Bi-Directional Signaling, Ping Hu, Bing Hao Luo Jan 2015

Integrin Αiiβ3 Transmembrane Domain Separation Mediates Bi-Directional Signaling, Ping Hu, Bing Hao Luo

Faculty Publications

Copyright: © 2015 Hu Luo. January Integrins play an essential role in hemostasis, thrombosis, and cell migration, and they transmit bidirectional signals. Transmembrane/cytoplasmic domains are hypothesized to associate in the resting integrins; whereas, ligand binding and intracellular activating signals induce transmembrane domain separation. However, how this conformational change affects integrin outside-in signaling and whether the α subunit cytoplasmic domain is important for this signaling remain elusive. Using Chinese Hamster Ovary (CHO) cells that stably expressed different integrin αIIbβ3 constructs, we discovered that an αIIb cytoplasmic domain truncation led to integrin activation but not defective outside-in signaling. In contrast, preventing transmembrane …

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Insights Into Substrate Binding To The Oxygen-Evolving Complex Of Photosystem Ii From Ammonia Inhibition Studies, David J. Vinyard, Gary W. Brudvig Jan 2015

Insights Into Substrate Binding To The Oxygen-Evolving Complex Of Photosystem Ii From Ammonia Inhibition Studies, David J. Vinyard, Gary W. Brudvig

Faculty Publications

© 2014 American Chemical Society. Water oxidation in Photosystem II occurs at the oxygen-evolving complex (OEC), which cycles through distinct intermediates, S0-S4. The inhibitor ammonia selectively binds to the S2 state at an unresolved site that is not competitive with substrate water. By monitoring the yields of flash-induced oxygen production, we show that ammonia decreases the net efficiency of OEC turnover and slows the decay kinetics of S2 to S1. The temperature dependence of biphasic S2 decay kinetics provides activation energies that do not vary in control and ammonia conditions. We interpret our data in the broader context of previous …

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Seasonality Of Fire Weather Strongly Influences Fire Regimes In South Florida Savanna-Grassland Landscapes, William J. Platt, Steve L. Orzell, Matthew G. Slocum Jan 2015

Seasonality Of Fire Weather Strongly Influences Fire Regimes In South Florida Savanna-Grassland Landscapes, William J. Platt, Steve L. Orzell, Matthew G. Slocum

Faculty Publications

Fire seasonality, an important characteristic of fire regimes, commonly is delineated using seasons based on single weather variables (rainfall or temperature). We used nonparametric cluster analyses of a 17-year (1993-2009) data set of weather variables that influence likelihoods and spread of fires (relative humidity, air temperature, solar radiation, wind speed, soil moisture) to explore seasonality of fire in pine savanna-grassland landscapes at the Avon Park Air Force Range in southern Florida. A four-variable, three-season model explained more variation within fire weather variables than models with more seasons. The three-season model also delineated intra-annual timing of fire more accurately than a …

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Phytoplankton And The Macondo Oil Spill: A Comparison Of The 2010 Phytoplankton Assemblage To Baseline Conditions On The Louisiana Shelf, M L. Parsons, W Morrison, N N. Rabalais, R. Eugene Turner, M L. Parsons Jan 2015

Phytoplankton And The Macondo Oil Spill: A Comparison Of The 2010 Phytoplankton Assemblage To Baseline Conditions On The Louisiana Shelf, M L. Parsons, W Morrison, N N. Rabalais, R. Eugene Turner, M L. Parsons

Faculty Publications

The Macondo oil spill was likely the largest oil spill to ever occur in United States territorial waters. We report herein our findings comparing the available baseline phytoplankton data from coastal waters west of the Mississippi River, and samples collected monthly from the same sampling stations, during and after the oil spill (May-October, 2010). Our results indicate that overall, the phytoplankton abundance was 85% lower in 2010 versus the baseline, and that the species composition of the phytoplankton community moved towards diatoms and cyanobacteria and away from ciliates and phytoflagellates. The results of this study reaffirm the view that phytoplankton …

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Patterns Of Seed Bank And Vegetation Diversity Along A Tidal Freshwater River, Tracy Elsey-Quirk, Mary Allessio Leck Jan 2015

Patterns Of Seed Bank And Vegetation Diversity Along A Tidal Freshwater River, Tracy Elsey-Quirk, Mary Allessio Leck

Faculty Publications

No abstract provided.

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Archaeal Enrichment In The Hypoxic Zone In The Northern Gulf Of Mexico, L.E. Gillies, J.C. Thrash, S. Derada, N.N. Rabalais, O.U. Mason Jan 2015

Archaeal Enrichment In The Hypoxic Zone In The Northern Gulf Of Mexico, L.E. Gillies, J.C. Thrash, S. Derada, N.N. Rabalais, O.U. Mason

Faculty Publications

No abstract provided.

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Human Impacts On Fisheries Across The Land-Sea Interface, N.N. Rabalais Jan 2015

Human Impacts On Fisheries Across The Land-Sea Interface, N.N. Rabalais

Faculty Publications

No abstract provided.

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Localisation Of 11Β-Hydroxysteroid Dehydrogenase Type 2 In Mineralocorticoid Receptor Expressing Magnocellular Neurosecretory Neurones Of The Rat Supraoptic And Paraventricular Nuclei, M. Haque, R. Wilson, K. Sharma, N. J. Mills, R. Teruyama Jan 2015

Localisation Of 11Β-Hydroxysteroid Dehydrogenase Type 2 In Mineralocorticoid Receptor Expressing Magnocellular Neurosecretory Neurones Of The Rat Supraoptic And Paraventricular Nuclei, M. Haque, R. Wilson, K. Sharma, N. J. Mills, R. Teruyama

Faculty Publications

© 2015 British Society for Neuroendocrinology. An accumulating body of evidence suggests that the activity of the mineralocorticoid, aldosterone, in the brain via the mineralocorticoid receptor (MR) plays an important role in the regulation of blood pressure. MR was recently found in vasopressin and oxytocin synthesising magnocellular neurosecretory cells (MNCs) in both the paraventricular (PVN) and supraoptic (SON) nuclei in the hypothalamus. Considering the physiological effects of these hormones, MR in these neurones may be an important site mediating the action of aldosterone in blood pressure regulation within the brain. However, aldosterone activation of MR in the hypothalamus remains controversial …

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Metabolic And Photosynthetic Consequences Of Blocking Starch Biosynthesis In The Green Alga Chlamydomonas Reinhardtii Sta6 Mutant, Anagha Krishnan, G. Kenchappa Kumaraswamy, David J. Vinyard, Huiya Gu, Gennady Ananyev, Matthew C. Posewitz, G. Charles Dismukes Jan 2015

Metabolic And Photosynthetic Consequences Of Blocking Starch Biosynthesis In The Green Alga Chlamydomonas Reinhardtii Sta6 Mutant, Anagha Krishnan, G. Kenchappa Kumaraswamy, David J. Vinyard, Huiya Gu, Gennady Ananyev, Matthew C. Posewitz, G. Charles Dismukes

Faculty Publications

© 2015 The Authors The Plant Journal © 2015 John Wiley & Sons Ltd. Upon nutrient deprivation, microalgae partition photosynthate into starch and lipids at the expense of protein synthesis and growth. We investigated the role of starch biosynthesis with respect to photosynthetic growth and carbon partitioning in the Chlamydomonas reinhardtii starchless mutant, sta6, which lacks ADP-glucose pyrophosphorylase. This mutant is unable to convert glucose-1-phosphate to ADP-glucose, the precursor of starch biosynthesis. During nutrient-replete culturing, sta6 does not re-direct metabolism to make more proteins or lipids, and accumulates 20% less biomass. The underlying molecular basis for the decreased biomass phenotype …

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Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith Jan 2015

Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith

Faculty Publications

& Sons Ltd. Members of the Pht1 family of plant phosphate (Pi) transporters play vital roles in Pi acquisition from soil and in plantaPi translocation to maintain optimal growth and development. The study of the specificities and biochemical properties of Pht1 transporters will contribute to improving the current understanding of plant phosphorus homeostasis and use-efficiency. In this study, we show through split in vivo interaction methods and in vitro analysis of microsomal root tissues that Arabidopsis thalianaPht1;1 and Pht1;4 form homomeric and heteromeric complexes. Transient and heterologous expression of the Pht1;1 variants, Pht1;1Y312D, Pht1;1Y312A and Pht1;1Y312F …

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Il-1Β Reciprocally Regulates Chemokine And Insulin Secretion In Pancreatic Β-Cells Via Nf-Κb, Susan J. Burke, Krisztian Stadler, Danhong Lu, Evanna Gleason, Anna Han, Dallas R. Donohoe, Richard C. Rogers, Gerlinda E. Hermann, Michael D. Karlstad, J. Jason Collier Jan 2015

Il-1Β Reciprocally Regulates Chemokine And Insulin Secretion In Pancreatic Β-Cells Via Nf-Κb, Susan J. Burke, Krisztian Stadler, Danhong Lu, Evanna Gleason, Anna Han, Dallas R. Donohoe, Richard C. Rogers, Gerlinda E. Hermann, Michael D. Karlstad, J. Jason Collier

Faculty Publications

© 2015 the American Physiological Society. Proinflammatory cytokines impact islet β-cell mass and function by altering the transcriptional activity within pancreatic β-cells, producing increases in intracellular nitric oxide abundance and the synthesis and secretion of immunomodulatory proteins such as chemokines. Herein, we report that IL-1β, a major mediator of inflammatory responses associated with diabetes development, coordinately and reciprocally regulates chemokine and insulin secretion. We discovered that NF-κB controls the increase in chemokine transcription and secretion as well as the decrease in both insulin secretion and proliferation in response to IL-1β. Nitric oxide production, which is markedly elevated in pancreatic β-cells …

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Respiratory Syncytial Virus Disease Is Mediated By Age-Variable Il-33, Jordy Saravia, Dahui You, Bishwas Shrestha, Sridhar Jaligama, David Siefker, Greg I. Lee, Jeffrey N. Harding, Tamekia L. Jones, Cynthia Rovnaghi, Bindiya Bagga, John P. Devincenzo, Stephania A. Cormier Jan 2015

Respiratory Syncytial Virus Disease Is Mediated By Age-Variable Il-33, Jordy Saravia, Dahui You, Bishwas Shrestha, Sridhar Jaligama, David Siefker, Greg I. Lee, Jeffrey N. Harding, Tamekia L. Jones, Cynthia Rovnaghi, Bindiya Bagga, John P. Devincenzo, Stephania A. Cormier

Faculty Publications

© 2015 Saravia et al. Respiratory syncytial virus (RSV) is the most common cause of infant hospitalizations and severe RSV infections are a significant risk factor for childhood asthma. The pathogenic mechanisms responsible for RSV induced immunopathophysiology remain elusive. Using an age-appropriate mouse model of RSV, we show that IL-33 plays a critical role in the immunopathogenesis of severe RSV, which is associated with higher group 2 innate lymphoid cells (ILC2s) specifically in neonates. Infection with RSV induced rapid IL-33 expression and an increase in ILC2 numbers in the lungs of neonatal mice; this was not observed in adult mice. …

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Mechanistic Species Distribution Modelling As A Link Between Physiology And Conservation, Tyler G. Evans, Sarah E. Diamond, Morgan W. Kelly Jan 2015

Mechanistic Species Distribution Modelling As A Link Between Physiology And Conservation, Tyler G. Evans, Sarah E. Diamond, Morgan W. Kelly

Faculty Publications

© The Author 2015. Climate change conservation planning relies heavily on correlative species distribution models that estimate future areas of occupancy based on environmental conditions encountered in present-day ranges. The approach benefits from rapid assessment of vulnerability over a large number of organisms, but can have poor predictive power when transposed to novel environments and reveals little in the way of causal mechanisms that define changes in species distribution or abundance. Having conservation planning rely largely on this single approach also increases the risk of policy failure. Mechanistic models that are parameterized with physiological information are expected to be more …

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Epigenetic Instability Of Imprinted Genes In Human Cancers, Joomyeong Kim, Corey L. Bretz, Suman Lee Jan 2015

Epigenetic Instability Of Imprinted Genes In Human Cancers, Joomyeong Kim, Corey L. Bretz, Suman Lee

Faculty Publications

© The Author(s) 2015. Many imprinted genes are often epigenetically affected in human cancers due to their functional linkage to insulin and insulin-like growth factor signaling pathways. Thus, the current study systematically characterized the epigenetic instability of imprinted genes in multiple human cancers. First, the survey results from TCGA (The Cancer Genome Atlas) revealed that the expression levels of the majority of imprinted genes are downregulated in primary tumors compared to normal cells. These changes are also accompanied by DNA methylation level changes in several imprinted domains, such as the PEG3, MEST and GNAS domains. Second, these DNA methylation level …

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Aebp2 As A Transcriptional Activator And Its Role In Cell Migration, Hana Kim, Muhammad B. Ekram, Arundhati Bakshi, Joomyeong Kim Jan 2015

Aebp2 As A Transcriptional Activator And Its Role In Cell Migration, Hana Kim, Muhammad B. Ekram, Arundhati Bakshi, Joomyeong Kim

Faculty Publications

© 2014 Elsevier Inc. Aebp2 encodes an evolutionarily conserved zinc finger protein that has not been well studied so far, yet recent studies indicated that this gene is closely associated with the Polycomb Repressive Complex 2 (PRC2). Thus, the current study characterized the basic aspects of this gene, including alternative promoters and protein isoforms. According to the results, Aebp2 is controlled through three alternative promoters, deriving three different transcripts encoding the embryonic (32. kDa) and somatic (52. kDa) forms. Chromatin Immuno-Precipitation (ChIP) experiments revealed that AEBP2 binds to its own promoter as well as the promoters of Jarid2 and Snai2. …

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Positive Priming Of Terrestrially Derived Dissolved Organic Matter In A Freshwater Microcosm System, Thomas S. Bianchi, Daniel C.O. Thornton, Shari A. Yvon-Lewis, Gary M. King, Timothy I. Eglinton, Michael R. Shields, Nicholas D. Ward, Jason Curtis Jan 2015

Positive Priming Of Terrestrially Derived Dissolved Organic Matter In A Freshwater Microcosm System, Thomas S. Bianchi, Daniel C.O. Thornton, Shari A. Yvon-Lewis, Gary M. King, Timothy I. Eglinton, Michael R. Shields, Nicholas D. Ward, Jason Curtis

Faculty Publications

© 2015. American Geophysical Union. All Rights Reserved. The role of priming processes in the remineralization of terrestrially derived dissolved organic carbon (TDOC) in aquatic systems has been overlooked. We provide evidence for TDOC priming using a lab-based microcosm experiment in which TDOC was primed by the addition of 13C-labeled algal dissolved organic carbon (ADOC) or a 13C-labeled disaccharide (trehalose). The rate of TDOC remineralization to carbon dioxide (CO2) occurred 4.1±0.9 and 1.5±0.3 times more rapidly with the addition of trehalose and ADOC, respectively, relative to experiments with TDOC as the sole carbon source over the course of …

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Physiological Strategies During Animal Diapause: Lessons From Brine Shrimp And Annual Killifish, Jason E. Podrabsky, Steven C. Hand Jan 2015

Physiological Strategies During Animal Diapause: Lessons From Brine Shrimp And Annual Killifish, Jason E. Podrabsky, Steven C. Hand

Faculty Publications

© 2015. Published by The Company of Biologists Ltd. Diapause is a programmed state of developmental arrest that typically occurs as part of the natural developmental progression of organisms that inhabit seasonal environments. The brine shrimp Artemia franciscana and annual killifish Austrofundulus limnaeus share strikingly similar life histories that include embryonic diapause as a means to synchronize the growth and reproduction phases of their life history to favorable environmental conditions. In both species, respiration rate is severely depressed during diapause and thus alterations in mitochondrial physiology are a key component of the suite of characters associated with cessation of development. …

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Divergent Evolution Of Two Corticotropin-Releasing Hormone (Crh) Genes In Teleost Fishes, Brian P. Grone, Karen P. Maruska Jan 2015

Divergent Evolution Of Two Corticotropin-Releasing Hormone (Crh) Genes In Teleost Fishes, Brian P. Grone, Karen P. Maruska

Faculty Publications

© 2015 Grone and Maruska. Genome duplication, thought to have happened twice early in vertebrate evolution and a third time in teleost fishes, gives rise to gene paralogs that can evolve subfunctions or neofunctions via sequence and regulatory changes. To explore the evolution and functions of corticotropin-releasing hormone (CRH), we searched sequenced teleost genomes for CRH paralogs. Our phylogenetic and synteny analyses indicate that two CRH genes, crha and crhb, evolved via duplication of crh1 early in the teleost lineage. We examined the expression of crha and crhb in two teleost species from different orders: an African cichlid, Burton's mouthbrooder, …

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Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith Jan 2015

Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith

Faculty Publications

& Sons Ltd. Members of the Pht1 family of plant phosphate (Pi) transporters play vital roles in Pi acquisition from soil and in plantaPi translocation to maintain optimal growth and development. The study of the specificities and biochemical properties of Pht1 transporters will contribute to improving the current understanding of plant phosphorus homeostasis and use-efficiency. In this study, we show through split in vivo interaction methods and in vitro analysis of microsomal root tissues that Arabidopsis thalianaPht1;1 and Pht1;4 form homomeric and heteromeric complexes. Transient and heterologous expression of the Pht1;1 variants, Pht1;1Y312D, Pht1;1Y312A and Pht1;1Y312F …

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Differentially Expressed Genes Match Bill Morphology And Plumage Despite Largely Undifferentiated Genomes In A Holarctic Songbird, Nicholas A. Mason, Scott A. Taylor Jan 2015

Differentially Expressed Genes Match Bill Morphology And Plumage Despite Largely Undifferentiated Genomes In A Holarctic Songbird, Nicholas A. Mason, Scott A. Taylor

Faculty Publications

© 2015 John Wiley & Sons Ltd. Understanding the patterns and processes that contribute to phenotypic diversity and speciation is a central goal of evolutionary biology. Recently, high-throughput sequencing has provided unprecedented phylogenetic resolution in many lineages that have experienced rapid diversification. The Holarctic redpoll finches (Genus: Acanthis) provide an intriguing example of a recent, phenotypically diverse lineage; traditional sequencing and genotyping methods have failed to detect any genetic differences between currently recognized species, despite marked variation in plumage and morphology within the genus. We examined variation among 20 712 anonymous single nucleotide polymorphisms (SNPs) distributed throughout the redpoll genome …

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The Effect Of Habitat And Body Size On The Evolution Of Vocal Displays In Thraupidae (Tanagers), The Largest Family Of Songbirds, Nicholas A. Mason, Kevin J. Burns Jan 2015

The Effect Of Habitat And Body Size On The Evolution Of Vocal Displays In Thraupidae (Tanagers), The Largest Family Of Songbirds, Nicholas A. Mason, Kevin J. Burns

Faculty Publications

© 2015 The Linnean Society of London. Animals rely on auditory cues to relay important information between individuals regarding territoriality, mating status, and individual condition. The efficacy of acoustic signals can depend on many factors, including the transmitter, the receiver, and the signalling environment. In the present study, we evaluate the effect of body size and habitat on the evolution of learned vocal displays across the tanagers (Aves: Thraupidae), a group that comprises nearly 10% of all songbird species. We find that body size affects tanager vocalizations, such that nine out of ten song characters and scores from two principal …

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How Global Biodiversity Hotspots May Go Unrecognized: Lessons From The North American Coastal Plain, Reed F. Noss, William J. Platt, Bruce A. Sorrie, Alan S. Weakley, D. Bruce Means, Jennifer Costanza, Robert K. Peet Jan 2015

How Global Biodiversity Hotspots May Go Unrecognized: Lessons From The North American Coastal Plain, Reed F. Noss, William J. Platt, Bruce A. Sorrie, Alan S. Weakley, D. Bruce Means, Jennifer Costanza, Robert K. Peet

Faculty Publications

© 2014 John Wiley & Sons Ltd. Biodiversity hotspots are conservation priorities. We identify the North American Coastal Plain (NACP) as a global hotspot based on the classic definition, a region with > 1500 endemic plant species and > 70% habitat loss. This region has been bypassed in prior designations due to misconceptions and myths about its ecology and history. These fallacies include: (1) young age of the NACP, climatic instability over time and submergence during high sea-level stands; (2) climatic and environmental homogeneity; (3) closed forest as the climax vegetation; and (4) fire regimes that are mostly anthropogenic. We show that …

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Hurricane Wrack Generates Landscape-Level Heterogeneity In Coastal Pine Savanna, William J. Platt, Dwayne Joseph, Darin P. Ellair Jan 2015

Hurricane Wrack Generates Landscape-Level Heterogeneity In Coastal Pine Savanna, William J. Platt, Dwayne Joseph, Darin P. Ellair

Faculty Publications

© 2014 The Authors. Wrack (vegetation debris) deposited by storm surges of major hurricanes along the northern Gulf of Mexico produces depressant effects that vary from partial to complete mortality of groundcover vegetation in coastal savannas. As wrack decomposes or is relocated by a subsequent hurricane, patches are opened to colonization. We postulated that patterns of wrack deposition and removal, coupled with differential responses by savanna plant species should produce alternate states of groundcover vegetation. We explored extreme effects of wrack deposited by Hurricane Katrina (2005) in savannas dominated by slash pine Pinus elliottii and cordgrass Spartina patens and located …

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Military Genomic Testing: Proportionality, Expected Benefits, And The Connection Between Genotypes And Phenotypes, Charles H. Pence Jan 2015

Military Genomic Testing: Proportionality, Expected Benefits, And The Connection Between Genotypes And Phenotypes, Charles H. Pence

Faculty Publications

Mehlman and Li offer a framework for approaching the bioethical issues raised by the military use of genomics that is compellingly grounded in both the contemporary civilian and military ethics of medical research, arguing that military commanders must be bound by the two principles of paternalism and proportionality. I agree fully. But I argue here that this is a much higher bar than we may fully realize. Just as the principle of proportionality relies upon a thorough assessment of harms caused and military advantage gained, the use of genomic research, on Mehlman and Li's view, will require an accurate understanding …

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Effect Of 12 Weeks Of Periodized Resistance Training Upon Total Plasma Adiponectin Concentration In Healthy Young Men, Greggory R. Davis, Jacqueline M. Stephens, Arnold G. Nelson Jan 2015

Effect Of 12 Weeks Of Periodized Resistance Training Upon Total Plasma Adiponectin Concentration In Healthy Young Men, Greggory R. Davis, Jacqueline M. Stephens, Arnold G. Nelson

Faculty Publications

© 2015 National Strength and Conditioning Association. The effects of resistance training on adiponectin have thus far yielded equivocal results. However, the effect of periodized resistance training on plasma adiponectin in offspring of type 2 diabetic and nondiabetic (ND) parents (first-degree family history) has yet to be determined. Untrained healthy young men with and without a first-degree family history of type 2 diabetes were assigned to an exercise intervention group (E) or an active control group (C). The E group performed a 12-week periodized resistance training program, whereas the C group did not participate in any structured exercise program. Fasting …

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Research Matters Spring 2015, Louisiana State University And Agricultural & Mechanical College Jan 2015

Research Matters Spring 2015, Louisiana State University And Agricultural & Mechanical College

Research Matters & RNR Newsletters

Research Matters is a publication which highlights ongoing research, international travel experiences, classroom happenings and degree program developments of and for the School of Renewable Natural Resources' students and faculty.

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Sixteenth-Century Soil Carbon Sequestration Rates Based On Mexican Land-Grant Documents, Andrew Sluyter, Richard Hunter Jan 2015

Sixteenth-Century Soil Carbon Sequestration Rates Based On Mexican Land-Grant Documents, Andrew Sluyter, Richard Hunter

Faculty Publications

A significant gap in our understanding of global change involves the linkages between historical land-use and land-cover change (LULCC), Holocene terrestrial carbon (C) pool fluxes, and climate change. To address that research problem, this method uses land grants for sheep ranches awarded in early colonial (1521–1620 CE) Mexico to quantify the amount of land converted from cropland to pastureland. Soil is the largest terrestrial C pool, and converting cropland to pastureland significantly increases soil C sequestration rates, thereby reducing atmospheric C. The land grants and associated archival documents contain location-specific information about soils, vegetation, hydrology, and other variables that make …

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