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A Comparison Of Four Electrical Stimulation Types On Staphylococcus Aureus Growth In Vitro, Harold L. Merriman, Chris A. Hegyi, Cheryl R. Albright-Overton, John Carlos Jr., Robert W. Putnam, Janet A. Mulcare Mar 2004

A Comparison Of Four Electrical Stimulation Types On Staphylococcus Aureus Growth In Vitro, Harold L. Merriman, Chris A. Hegyi, Cheryl R. Albright-Overton, John Carlos Jr., Robert W. Putnam, Janet A. Mulcare

Faculty Publications

We evaluated the efficacy of common electrical stimulation (ES) types on bacterial growth in vitro using clinically relevant conditions. Four types of ES-continuous micro-amperage direct current (μADC), high-voltage pulsed current (HVPC), low-voltage monophasic milliamperage pulsed current (LVMmAPC), and low-voltage biphasic milliamperage pulsed current (LVBmAPC)-were each applied to a separate set of culture plates containing Staphylococcus aureus for 1 h at 37°C on 3 consecutive days. After ES treatment, the zone of inhibition surrounding each electrode was measured. Zone of inhibition measurements showed a significant inhibitory effect for continuous μADC and HVPC (p < 0.05), but not for LVM-mAPC and LVBmAPC. Differences in bacterial growth inhibition were not found for polarity and time. These data suggest that for infected wounds, HVPC and continuous μADC treatments may have an initial bacterial inhibitory effect, which does not significantly change with subsequent treatments.

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An Assessment Of Hiv/Aids Risk In Higher Education Students In Yerevan, Armenia, Talin Babikian, Mary Catherin Freier, Gary L. Hopkins, Ralph Diclemente, Duane C. Mcbride, Matt Riggs Mar 2004

An Assessment Of Hiv/Aids Risk In Higher Education Students In Yerevan, Armenia, Talin Babikian, Mary Catherin Freier, Gary L. Hopkins, Ralph Diclemente, Duane C. Mcbride, Matt Riggs

Faculty Publications

Armenia's current sociopolitical and economic instability and the alarming HIV incidence rates in neighboring countries amplify its risk for a national epidemic. The goals of this study were to assess HIV/AIDS knowledge and risk behaviors among higher education students in Yerevan. Knowledge of HIV transmission through sexual intercourse was markedly higher than that on intravenous transmission and prevailing myths; however, HIV/AIDS knowledge was not related to risk behaviors. Tobacco and alcohol prevalence was relatively high. Students reported risky sexual behaviors, including inconsistent condom use, casual sex, and multiple partners. In addition to descriptive statistics delineating gender differences across the target …

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Interferon Antagonist Proteins Of Influenza And Vaccinia Viruses Are Suppressors Of Rna Silencing, Wan Xiang Li, Hongwei Li, Rui Lu, Feng Li, Monica Dus, Peter Atkinson, Edward W.A. Brydon, Kyle L. Johnson, Adolfo García-Sastre, L. Andrew Ball, Peter Palese, Shou Wei Ding Feb 2004

Interferon Antagonist Proteins Of Influenza And Vaccinia Viruses Are Suppressors Of Rna Silencing, Wan Xiang Li, Hongwei Li, Rui Lu, Feng Li, Monica Dus, Peter Atkinson, Edward W.A. Brydon, Kyle L. Johnson, Adolfo García-Sastre, L. Andrew Ball, Peter Palese, Shou Wei Ding

Faculty Publications

Homology-dependent RNA silencing occurs in many eukaryotic cells. We reported recently that nodaviral infection triggers an RNA silencing-based antiviral response (RSAR) in Drosophila, which is capable of a rapid virus clearance in the absence of expression of a virus-encoded suppressor. Here, we present further evidence to show that the Drosophila RSAR is mediated by the RNA interference (RNAi) pathway, as the viral suppressor of RSAR inhibits experimental RNAi initiated by exogenous double-stranded RNA and RSAR requires the RNAi machinery. We demonstrate that RNAi also functions as a natural antiviral immunity in mosquito cells. We further show that vaccinia virus and …

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Studies Of The Role Of The Drosophila Scs And Scs′ Insulators In Defining Boundaries Of A Chromosome Puff, Emily J. Kuhn, Craig M. Hart, Pamela K. Geyer Feb 2004

Studies Of The Role Of The Drosophila Scs And Scs′ Insulators In Defining Boundaries Of A Chromosome Puff, Emily J. Kuhn, Craig M. Hart, Pamela K. Geyer

Faculty Publications

Insulators are DNA elements that establish independent transcriptional domains within eukaryotic genomes. The Drosophila scs and scs′ insulators localize near the borders of a structural domain in the polytene chromosomes, known as a puff, produced by transcription of the 87A heat shock protein (hsp) genes. It has been suggested that scs and scs′ are boundary elements that delimit this decondensed chromatin domain, reflecting the mechanism by which these sequences act to constrain regulatory interactions. This model was tested using transposons that carried a yellow gene to assess enhancer blocking and an hsp70-lacZ gene to examine the structure of a heat …

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Effects Of Aerobic Exercise On Anxiety Sensitivity, Joshua J. Broman-Fulks, Mitchell E. Berman, Brian A. Rabian, Michael J. Webster Feb 2004

Effects Of Aerobic Exercise On Anxiety Sensitivity, Joshua J. Broman-Fulks, Mitchell E. Berman, Brian A. Rabian, Michael J. Webster

Faculty Publications

Anxiety sensitivity is a known precursor to panic attacks and panic disorder, and involves the misinterpretation of anxiety-related sensations. Aerobic exercise has been shown to reduce generalized anxiety, and may also reduce anxiety sensitivity through exposure to feared physiological sensations. Accordingly, 54 participants with elevated anxiety sensitivity scores completed six 20-min treadmill exercise sessions at either a high-intensity aerobic (n = 29) or low-intensity (n = 25) level. Self-ratings of anxiety sensitivity, fear of physiological sensations associated with anxiety, and generalized anxiety were obtained at pretreatment, post-treatment, and one-week follow-up. Results indicated that both high- and low-intensity exercise reduced anxiety …

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Justly Integrating Covenant, Law, And Sabbath, Roy E. Gane Feb 2004

Justly Integrating Covenant, Law, And Sabbath, Roy E. Gane

Faculty Publications

No abstract provided.

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Fiscal Decentralization In The Czech And Slovak Republics: A Comparative Study Of Moral Hazard, Phillip J. Bryson, Gary C. Cornia, Gloria E. Wheeler Feb 2004

Fiscal Decentralization In The Czech And Slovak Republics: A Comparative Study Of Moral Hazard, Phillip J. Bryson, Gary C. Cornia, Gloria E. Wheeler

Faculty Publications

Fiscal decentralization has provided neither the benefits of decentralization nor an independent revenue source for subnational governments in the Czech and Slovak Republics. In Slovakia, political conditions early in the transition led to the relative neglect of revenue transfers from the center. This produced financial stress but also encouraged greater fiscal independence for local governments. It also forced them to seek maximal property tax revenues. The Czech Republic made more substantial transfers to local governments, but the development of fiscal autonomy was stifled as transfers reduced the need for own-source local revenues. The Czech real estate tax has remained nominal …

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Detector Description And Performance For The First Coincidence Observations Between Ligo And Geo, B. Abbott, R. Abbott, R. Adhikari, A. Ageev, B. Allen, R. Amin, S. B. Anderson, W. G. Anderson, M. Araya, H. Armandula, F. Asiri, P. Aufmuth, C. Aulbert, S. Babak, R. Balasubramanian, S. Ballmer, B. C. Barish, D. Barker, C. Barker-Patton, M. Barnes, B. Barr, M. A. Barton, K. Bayer, R. Beausoleil, K. Belczynski, R. Bennett, S. J. Berukoff, J. Betzwieser, B. Bhawal, I. A. Bilenko, G. Billingsley, E. Black, K. Blackburn Jan 2004

Detector Description And Performance For The First Coincidence Observations Between Ligo And Geo, B. Abbott, R. Abbott, R. Adhikari, A. Ageev, B. Allen, R. Amin, S. B. Anderson, W. G. Anderson, M. Araya, H. Armandula, F. Asiri, P. Aufmuth, C. Aulbert, S. Babak, R. Balasubramanian, S. Ballmer, B. C. Barish, D. Barker, C. Barker-Patton, M. Barnes, B. Barr, M. A. Barton, K. Bayer, R. Beausoleil, K. Belczynski, R. Bennett, S. J. Berukoff, J. Betzwieser, B. Bhawal, I. A. Bilenko, G. Billingsley, E. Black, K. Blackburn

Faculty Publications

For 17 days in August and September 2002, the LIGO and GEO interferometer gravitational wave detectors were operated in coincidence to produce their first data for scientific analysis. Although the detectors were still far from their design sensitivity levels, the data can be used to place better upper limits on the flux of gravitational waves incident on the earth than previous direct measurements. This paper describes the instruments and the data in some detail, as a companion to analysis papers based on the first data. © 2003 Elsevier B.V. All rights reserved.

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Visual Detection Of Cysteine And Homocysteine, Oleksandr Rusin, Nadia N. St. Luce, Rezik A. Agbaria, Jorge O. Escobedo, Shan Jiang, Isiah M. Warner, Fareed B. Dawan, Kun Lian, Robert M. Strongin Jan 2004

Visual Detection Of Cysteine And Homocysteine, Oleksandr Rusin, Nadia N. St. Luce, Rezik A. Agbaria, Jorge O. Escobedo, Shan Jiang, Isiah M. Warner, Fareed B. Dawan, Kun Lian, Robert M. Strongin

Faculty Publications

The determination of cysteine and homocysteine levels is of great current interest for the monitoring of desease states. A new colorimetric method for the simultaneous detection of L-cysteine and L-homocysteine has been developed. A fluorescein derivative reacts with the above amino acids, producing their respective thiazolidines resulting in color changes. Interference from other amino acids and proteins is minimal. Copyright © 2004 American Chemical Society.

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Androgen Receptor Expression In The Rat Prostate Is Down-Regulated By Dietary Phytoestrogens, Edwin D. Lephart, Trent D. Lund, Daniel J. Munson, Herman Aldercreutz, Robert J. Handa Jan 2004

Androgen Receptor Expression In The Rat Prostate Is Down-Regulated By Dietary Phytoestrogens, Edwin D. Lephart, Trent D. Lund, Daniel J. Munson, Herman Aldercreutz, Robert J. Handa

Faculty Publications

Background- It is well established that the growth of the prostate gland is a hormone-dependent phenomenon involving both androgenic and estrogenic control. Proliferation of prostate cells is, at least in part, under control of estrogen receptor beta (ER-beta). Phytoestrogens bind ER-beta with high affinity and therefore may have antiproliferative effects in the prostate. Methods- The prostates of male Long-Evans rats fed a diet high in phytoestrogens (Phyto-600) or very low levels of phytoestrogens (Phyto-free) were analyzed to determine the impact of dietary phytoestrogens on prostate weight and androgen receptor (AR) expression in the prostate. Results- Dietary phytoestrogens significantly decreased post-pubertal …

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Engaging Evangelism In The Congregation, Pat Taylor Ellison, Patrick R. Keifert Jan 2004

Engaging Evangelism In The Congregation, Pat Taylor Ellison, Patrick R. Keifert

Faculty Publications

No abstract provided.

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The Bible And Popular Culture: Engaging Sacred Text In The World Of "Others", Mary E. Hess Jan 2004

The Bible And Popular Culture: Engaging Sacred Text In The World Of "Others", Mary E. Hess

Faculty Publications

No abstract provided.

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Red-Cockaded Woodpecker Recovery: An Integrated Strategy, D. Craig Rudolph, Richard N. Conner, Jeffrey R. Walters Jan 2004

Red-Cockaded Woodpecker Recovery: An Integrated Strategy, D. Craig Rudolph, Richard N. Conner, Jeffrey R. Walters

Faculty Publications

Populations of the red-cockaded woodpecker (Picoides borealis) have experienced massive declines since European colonization of North America. This is due to extensive habitat loss and alteration. Logging of old-growth pine forests and alteration of the fire regime throughout the historic range of the species were the primary causes of population decline. Listing of the red-cockaded woodpecker under the Endangered Species Act of 1973, as amended, and increased emphasis on management of non-game species have resulted in efforts to recover remnant populations of the red-cockaded woodpecker in many parts of its historic range. Due to extensive research and adaptive management initiatives …

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Red-Cockaded Woodpecker Status And Management: West Gulf Coastal Plain And Interior Highlands, D. Craig Rudolph, Richard N. Conner, Richard R. Schaefer, Daniel Saenz, Dawn K. Carrie, N. Ross Carrie, Ricky W. Maxey, Warren G. Montague, Joe Neal, Kenneth Moore, John Skeen, Jeffrey A. Reid Jan 2004

Red-Cockaded Woodpecker Status And Management: West Gulf Coastal Plain And Interior Highlands, D. Craig Rudolph, Richard N. Conner, Richard R. Schaefer, Daniel Saenz, Dawn K. Carrie, N. Ross Carrie, Ricky W. Maxey, Warren G. Montague, Joe Neal, Kenneth Moore, John Skeen, Jeffrey A. Reid

Faculty Publications

Red-cockaded woodpecker populations declined precipitously following European settlement and expansion and cutting of the original pine forests across the southeastern United States. By 1990 most residual populations lacked demographic viability, existed in degraded habitat, and were isolated from other populations. The primary causes of this situation were harvest of the original pine forests of the southeastern United States, conversion of forested lands to other uses, short-rotation silvicultural practices, and alteration of the fire regime in the regenerated forests. As social and legal mandates changed, management of red-cockaded woodpeckers became a higher priority. Intensive management for red-cockaded woodpeckers is currently practiced …

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Batter's Choice: Lessons For Teaching Tactics In A Modified Striking/Fielding Game, Christina Sinclair Jan 2004

Batter's Choice: Lessons For Teaching Tactics In A Modified Striking/Fielding Game, Christina Sinclair

Faculty Publications

When played in their standard form, striking/fielding games are often a favorite among elementary students; yet they allow for only limited participation, which is contradictory to quality physical education. This article presents a sequence of lessons leading to Batter's Choice, a modified striking/fielding game, designed to maximize the attainment of tactical awareness, skill enhancement, and enjoyment by elementary children. Each lesson uses a tactical approach to involve students in solving a tactical problem within a game-like situation and then practicing the skills necessary to solve the problem. The tactical problems prepare students for game situations they will experience in the …

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The Aesthetic Turn In Green Marketing: Environmental Consumer Ethics Of Natural Personal Care Products, Anne Marie Todd Jan 2004

The Aesthetic Turn In Green Marketing: Environmental Consumer Ethics Of Natural Personal Care Products, Anne Marie Todd

Faculty Publications

Green consumerism is on the rise in America, but its environmental effects are contested. Does green marketing contribute to the greening of American consciousness, or does it encourage corporate greenwashing? This tenuous ethical position means that eco-marketers must carefully frame their environmental products in a way that appeals to consumers with environmental ethics and buyers who consider natural products as well as conventional items. Thus, eco-marketing constructs a complicated ethical identity for the green consumer. Environmentally aware individuals are already guided by their personal ethics. In trying to attract new consumers, environmentally minded businesses attach an aesthetic quality to environmental …

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Bridging The Internet Divide: An Analysis Of The Changing Nature Of The Political Communication Of Moveon.Org, Anne Marie Todd, C. M. Sabee Jan 2004

Bridging The Internet Divide: An Analysis Of The Changing Nature Of The Political Communication Of Moveon.Org, Anne Marie Todd, C. M. Sabee

Faculty Publications

This paper looks into the conversations among members on MoveOn’s electronic bulletin boards and MoveOn’s public rhetorical messages, including press releases, advertisements and campaign actions. These conversational and rhetorical media illuminate the links between the communication for internal and public audiences, and offer a look at the changing nature of political communication.

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Growing Faithful Children In Media Cultures, Mary E. Hess Jan 2004

Growing Faithful Children In Media Cultures, Mary E. Hess

Faculty Publications

No abstract provided.

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Strain Experienced By Caregivers Of Dementia Patients Receiving Palliative Care: Findings From The Palliative Excellence In Alzheimer’S Care Efforts (Peace) Program, Sadhna Diwan, Gavin W. Hougham, Greg A. Sachs Jan 2004

Strain Experienced By Caregivers Of Dementia Patients Receiving Palliative Care: Findings From The Palliative Excellence In Alzheimer’S Care Efforts (Peace) Program, Sadhna Diwan, Gavin W. Hougham, Greg A. Sachs

Faculty Publications

Programs that provide palliative care to individuals with dementia, which is a progressive terminal illness, are likely to encounter different issues (e.g., management of problem behaviors, caregiver strain extending over years) from those typically addressed by hospice programs. Little research is available on palliative care for individuals with dementia who live in the community.This study examines predictors of types of strain experienced by caregivers of community-dwelling patients with dementia enrolled in a unique demonstration program titled Palliative Excellence in Alzheimer Care Efforts (PEACE), which moved palliative care"upstream," integrating palliative care into the primary care of patients with dementia.Data were collected …

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Snake (Colubridae: Thamnophis) Predatory Responses To Chemical Cues From Native And Introduced Prey Species, Stephen J. Mullin, Hélène Imbert, Jennifer M. Fish, Edward L. Ervin, Robert N. Fisher Jan 2004

Snake (Colubridae: Thamnophis) Predatory Responses To Chemical Cues From Native And Introduced Prey Species, Stephen J. Mullin, Hélène Imbert, Jennifer M. Fish, Edward L. Ervin, Robert N. Fisher

Faculty Publications

Several aquatic vertebrates have been introduced into freshwater systems in California over the past 100 years. Some populations of the two-striped garter snake (Thamnophis hammondii) have lived in sympatry with these species since their introduction; other populations have never encountered them. To assess the possible adaptation to a novel prey, we tested the predatory responses of T. hammondii from different populations to different chemosensory cues from native and introduced prey species. We presented chemical extracts from potential prey types and 2 control odors to individual snakes on cotton swabs and recorded the number of tongue flicks and attacks …

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Sterol Carrier Protein-2 Directly Interacts With Caveolin-1 In Vitro And In Vivo, Minglong Zhou, Rebecca D. Parr, Anca D. Petrescu, H. Ross Payne, Barbara P. Atshaves, Ann B. Kier, Judith M. Ball, Friedhelm Schroeder Jan 2004

Sterol Carrier Protein-2 Directly Interacts With Caveolin-1 In Vitro And In Vivo, Minglong Zhou, Rebecca D. Parr, Anca D. Petrescu, H. Ross Payne, Barbara P. Atshaves, Ann B. Kier, Judith M. Ball, Friedhelm Schroeder

Faculty Publications

HDL-mediated reverse-cholesterol transport as well as phosphoinositide signaling are mediated through plasma membrane microdomains termed caveolae/lipid rafts. However, relatively little is known regarding mechanism(s) whereby these lipids traffic to or are targeted to caveolae/lipid rafts. Since sterol carrier protein-2 (SCP-2) binds both cholesterol and phosphatidylinositol, the possibility that SCP-2 might interact with caveolin-1 and caveolae was examined. Double immunolabeling and laser scanning fluorescence microscopy showed that a small but significant portion of SCP-2 colocalized with caveolin-1 primarily at the plasma membrane of L-cells and more so within intracellular punctuate structures in hepatoma cells. In SCP-2 overexpressing L-cells, SCP-2 was detected …

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Microfinance And Third World Development: A Critical Analysis, Elahi Khandakar, Constantine P. Danopoulos Jan 2004

Microfinance And Third World Development: A Critical Analysis, Elahi Khandakar, Constantine P. Danopoulos

Faculty Publications

Microfinance is emerging as an integral part of the new development paradigm, described by the phrase "participation and development. "Although the idea has become quite popular among donor agencies, development practitioners, and academicians, theoretical premises on which this idea is founded seem entirely unexamined. Accordingly, this article investigates the academic merits, as well as potential consequences, of this popular poverty alleviating model from the supply-side perspective and asks a provocative question: Do the microfinance ventures have features which suggest that the establishment of this new finance industry in the Third World countries might further complicate their pervasive poverty problems? The …

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Daily Movements Of Female White-Tailed Deer Relative To Parturition And Breeding, Christopher E. Comer Jan 2004

Daily Movements Of Female White-Tailed Deer Relative To Parturition And Breeding, Christopher E. Comer

Faculty Publications

To assess how white-tailed deer (Odocoileus virginianus) herd demographics influence reproductive behaviors, we examined 24-h diel movements of female whitetailed deer relative to parturition and breeding in a low-density population with a near even sex ratio at the Savannah River Site (SRS), South Carolina. We conducted a series of intensive, 24-h radio-tracking periods of 13 females during spring and fall 2002. We compared daily range (ha), rate of travel (m/h), and distance between extreme daily locations (m), among the periods of pre-parturition and post-parturition and pre-, peak-, and post-rut. From pre-parturition to post-parturition, we observed decreases in diel range size …

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Modeling Energy Savings From Urban Shade Trees: An Assessment Of The Citygreen Energy Conservation Module, Daniel Unger, Courtney Parks, Andrew Carver Jan 2004

Modeling Energy Savings From Urban Shade Trees: An Assessment Of The Citygreen Energy Conservation Module, Daniel Unger, Courtney Parks, Andrew Carver

Faculty Publications

CITYgreen software has become a commonly used tool to quantify the benefits of urban shade trees. Despite its frequent use, little research has been conducted to validate results of the CITYgreen energy conservation module. The first objective of this study is to perform a familiar application of CITYgreen software to predict the potential energy savings contribution of existing tree canopies in residential neighborhoods during peak cooling summer months. Unlike previous studies utilizing CITYgreen, this study also seeks to assess the software's performance by comparing model results (i.e., predicted energy savings) with actual savings (i.e., savings derived directly from energy consumption …

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History And Evaluation Of The Mcintire-Stennis Cooperative Forestry Research Program, D. H. Thompson, Steven H. Bullard Jan 2004

History And Evaluation Of The Mcintire-Stennis Cooperative Forestry Research Program, D. H. Thompson, Steven H. Bullard

Faculty Publications

On October 10, 1962, President John Kennedy signed PL 87-788 (Appendix A) now known as the McIntire-Stennis Cooperative Forestry Research Program. After 40 years, this formula-based cooperative program continues to provide the base support for much of the forestry research conducted at 65 public forestry institutions. While still important, the proportion of McIntire-Stennis research sponsored over this time period has decreased. Other funding sources, such as competitive grants through the Cooperative State Research, Education, and Extension Service and other government agencies along with special grants appropriated by Congress, now finance a higher proportion of forestry research as shown in Figure …

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The Double-D Cell For Assembling Hardware In Upholstered Furniture Production, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker Jan 2004

The Double-D Cell For Assembling Hardware In Upholstered Furniture Production, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker

Faculty Publications

This is the first case study in a series of studies that relate specifically to the development and application of lean manufacturing techniques of furniture and wood component supplying industries. Case study one is an example of how a subassembly process in an upholstered furniture facility was re-configured from a traditional flow line to a “Double-D” manufacturing cell. This case study provides general information about lean manufacturing and how a lean manufacturing system can be implemented, followed by a detailed description of Franklin Corporation’s adoption of a new type of manufacturing cell—the “Double-D”. A discussion of the original state of …

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Parallel Pull Flow: A New Lean Production Design, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker Jan 2004

Parallel Pull Flow: A New Lean Production Design, S. L. Hunter, Steven H. Bullard, P. H. Steele, W. D. Motsenbocker

Faculty Publications

This case study is #2 in a series of studies that relate specifically to the development and application of lean manufacturing techniques for the furniture and wood component supplying industries. Case study #2 is an example of how productivity can be increased in a furniture manufacturing organization by using a new lean production design termed Parallel Pull Flow (PPF). This case study provides information about lean manufacturing and how a lean manufacturing system can be implemented, followed by a detailed case study of a furniture manufacturing company’s adoption of a new final assembly PPF lean production system.

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Inorganic Nitrogen Transformations At High Loading Rates In An Oligohaline Estuary, R. Eugene Turner, Q. Dortch, Nancy N. Rabalais Jan 2004

Inorganic Nitrogen Transformations At High Loading Rates In An Oligohaline Estuary, R. Eugene Turner, Q. Dortch, Nancy N. Rabalais

Faculty Publications

A well-defined nitrogen retention and turnover budget was estimated for a shallow oligohaline lake (Lake Pontchartrain, Louisiana, USA). In 1997 a month-long diversion of the Mississippi River filled the Lake with highly concentrated river water (80 µM nitrate) and lowered the salinity to 0 psu within 2 weeks. After the spillway was closed the Lake mixed with estuarine tidal waters and came to equilibrium over 4 months with the riverine, atmospheric and offshore water nitrogen sources. A flushing rate of 1.78% d−1 was estimated by analyzing a plot of ln salinity versus time for the first 120 days after the …

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Suspended Sediment, C, N, P, And Si Yields From The Mississippi River Basin, R. Eugene Turner, Nancy N. Rabalais Jan 2004

Suspended Sediment, C, N, P, And Si Yields From The Mississippi River Basin, R. Eugene Turner, Nancy N. Rabalais

Faculty Publications

The annual loads of C,N,P, silicate, total suspended sediment (mass) and their yields (mass area−1) were estimated for six watersheds of the Mississippi River Basin (MRB) using water quality and water discharge records for 1973 to 1994. The highest load of suspended sediments is from the Missouri watershed (58 mt km2 yr−1), which is also the largest among the six major sub-basins. The Ohio watershed delivers the largest load of water (38%). The Upper Mississippi has the largest total nitrogen load (32%) and yield (1120 kg TN km2 yr−1). The loading of organic carbon, total phosphorus and silicate from the …

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Below-Ground Biomass In Healthy And Impaired Salt Marshes, R. Eugene Turner, Erick M. Swenson, Charles S. Milan, James M. Lee, Thomas A. Oswald Jan 2004

Below-Ground Biomass In Healthy And Impaired Salt Marshes, R. Eugene Turner, Erick M. Swenson, Charles S. Milan, James M. Lee, Thomas A. Oswald

Faculty Publications

Twelve salt marshes in south Louisiana (USA) were classified as either ‘impaired’ or ‘healthy’ before a summer sample collection of above- and below-ground biomass and determination of sediment accretion rates. The above-ground biomass of plant tissues was the same at both impaired and healthy salt marshes and was not a good predictor of marsh health. However, below-ground root biomass in the upper 30 cm was much lower in the impaired marshes compared to the healthy marshes. Compromises to root production apparently occur before there is an obvious consequence to the above-ground biomass, which may quickly collapse before remedial action can …

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