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2004

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Full-Text Articles in Life Sciences

Registered Dietitans Practicing Advanced Level Skills In The State Of Tennessee And Their Perceived Job Satisfaction., Charlotte Norene Cochran Dec 2004

Registered Dietitans Practicing Advanced Level Skills In The State Of Tennessee And Their Perceived Job Satisfaction., Charlotte Norene Cochran

Electronic Theses and Dissertations

The purpose of this study was to ascertain the number of registered dietitians in Tennessee who perceive they are practicing at advanced levels versus those making recommendations only. Job satisfaction according to order writing privileges was also assessed. A five question survey was sent to hospitals meeting selection criteria. Thirty-three surveys (89%) were returned. Eighty-nine percent of dietitians with order writing privileges considered themselves to be advanced level practitioners compared to 60% in the group of dietitians who did not have order writing privileges. Dietitians with order writing privileges indicated greater job satisfaction compared to dietitians that did not have ...


A Comparison Of Linear And Daily Undulating Periodizied Strength Training Programs., Andrew Morrow Caldwell Dec 2004

A Comparison Of Linear And Daily Undulating Periodizied Strength Training Programs., Andrew Morrow Caldwell

Electronic Theses and Dissertations

The purpose of this study is to compare linear periodized (LP) and daily undulating (DUP) periodized strength training programs, and determine if either method of periodization elicits superior gains in 1 Repetitions maximums (1RM) for back squat (BS) and bench press (BP) (core exercises). Nineteen subjects (n=19) underwent a 6-week resistance-training (RT) program. Participants performed both BS and BP two day a week. The LP group linearly increased intensity while decreasing volume. While the DUP group daily changed intensity and volume. Total volume for both BS and BP were equal for both LP and DUP. Both BP and BS ...


European Fire Ants On Mount Desert Island, Maine: Population Structure, Mechanisms Of Competition And Community Impacts Of Myrmica Rubra L. (Hymenoptera: Formicidae), Jeffrey Garnas Dec 2004

European Fire Ants On Mount Desert Island, Maine: Population Structure, Mechanisms Of Competition And Community Impacts Of Myrmica Rubra L. (Hymenoptera: Formicidae), Jeffrey Garnas

Electronic Theses and Dissertations

In the early to mid-201h century, Mvrmica rubra Latreille established in various communities in Maine, mostly along the coast. Since its establishment, the ant has spread both locally via vegetative colony budding and regionally via human commerce to no fewer than 30 Maine communities, including one inland site. Studies were undertaken in the summer of 2002 to address questions of the ants' population structure in its introduced range by testing for intercolony aggression within and between local infestations. Using captive nests maintained in their original nest soil, M. rubra was tested against its close neighbors, neighbors of lorn within the ...


Wetland And Nest Scale Habitat Use By The Four-Toed Salamander (Hemidactylium Scutatum) In Maine, And A Comparison Of Survey Methods, Rebecca J. Chalmers Dec 2004

Wetland And Nest Scale Habitat Use By The Four-Toed Salamander (Hemidactylium Scutatum) In Maine, And A Comparison Of Survey Methods, Rebecca J. Chalmers

Electronic Theses and Dissertations

Conserving amphibian populations requires knowledge of a species and its habitat relationships. The four-toed salamander (Hemidactylium scutatum) is listed as Special Concern in Maine and 11 additional states and provinces, Threatened in Illinois, and Endangered in Indiana (Appendix A). Little is known of H. scutatum ecology despite the species' extensive range. Infrequent sightings of H. scutatum throughout its range may indicate either low numbers or that the species' behavior make detection difficult. Records for H. scutatum in Maine existed from only 32 sites before my study, and the total number of occurrences of this species in Maine is unknown (P ...


Environmental Conservation On Agricultural Working Land: Assessing Policy Alternatives Using A Spatially Heterogeneous Land Allocation Model, Kelly M. Cobourn Dec 2004

Environmental Conservation On Agricultural Working Land: Assessing Policy Alternatives Using A Spatially Heterogeneous Land Allocation Model, Kelly M. Cobourn

Electronic Theses and Dissertations

Multifunctionality refers to the ability of agricultural systems to produce an array of non-market goods and services in addition to market commodities. This thesis focuses explicitly on the provision of environmental benefits, through reduced soil erosion and fertilizer applications, by agricultural producers. Soil erosion and nutrient contamination from agricultural production are the foremost contributors to ground and surface water degradation in the United States. Reducing their production implies gains in social welfare, but may generate significant private losses to producers. The objective of this analysis is to quantify the tradeoff between environmental improvements and producer welfare and to examine the ...


Characterization Of A Catechol-Type Siderophore And The Detection Of A Possible Outer Membrane Receptor Protein From Rhizobium Leguminosarum Strain Iari 312., Brianne Lee Clark Aug 2004

Characterization Of A Catechol-Type Siderophore And The Detection Of A Possible Outer Membrane Receptor Protein From Rhizobium Leguminosarum Strain Iari 312., Brianne Lee Clark

Electronic Theses and Dissertations

Many gram-negative bacteria produce and secrete siderophores under iron-deficient conditions. Siderophores are low molecular weight compounds (600-1500 Daltons), which chelate ferric iron with an extremely high affinity, and the complex is actively transported across the outer and inner membranes of gram-negative bacteria. There are two main classes of siderophores: catechol and hydroxamate. Catechol-type siderophores chelate ferric iron via hydroxyl groups, and hydroxamate-type siderophores chelate ferric iron via a carbonyl group with an adjacent nitrogen. Rhizobia fix atmospheric nitrogen symbiotically in leguminous plants using the iron-containing enzyme nitrogenase. To satisfy their iron requirements, many rhizobia are known to produce siderophores. Rhizobium ...


The Magnolia Warbler Dendroica Magnolia On Unaka Mountain, Unicoi County, Tn: Possible Breeding And Habitat Analysis., Kevin Patrick Elam Aug 2004

The Magnolia Warbler Dendroica Magnolia On Unaka Mountain, Unicoi County, Tn: Possible Breeding And Habitat Analysis., Kevin Patrick Elam

Electronic Theses and Dissertations

The chief purpose of this study is to provide information on the habitat and breeding information of Magnolia Warblers on Unaka Mountain. Magnolia Warblers breed in Canada and the Northeastern United States. There are no current breeding records for this species in Tennessee.

For the habitat analysis, trees were identified on individual subplots. Shrubs were analyzed using the point-intercept method. Most of the major tree and shrub species were different than those found in Maine, which is a major breeding region for this species. Therefore, it's the structure of the habitat that is important for nesting. Fledglings were seen ...


Nrage Regulates Life And Death Of Neural Progenitors, Stephen E. Kendall Aug 2004

Nrage Regulates Life And Death Of Neural Progenitors, Stephen E. Kendall

Electronic Theses and Dissertations

The development of the central nervous system requires the orchestration of numerous instructive and permissive cues. These factors are secreted from signaling centers and function in a concentration dependent manner that effects the proliferation, survival and differentiation of neural progenitors (NP) and their differentiated progeny. The family including bone morphogenetic proteins (BMPs) are key regulators of NP expansion and survival. However, once NP become committed to a neuronal fate and begin to differentiate they compete for limited amounts of neurotrophin that facilitate further growth and survival. Here we show that the p75 neurotrophin receptor interacting protein NRAGE is expressed in ...


Biology And Ecology Of Larval Lobsters (Homarus Americanus): Implications For Population Connectivity And Larval Transport, Eric R. Annis Aug 2004

Biology And Ecology Of Larval Lobsters (Homarus Americanus): Implications For Population Connectivity And Larval Transport, Eric R. Annis

Electronic Theses and Dissertations

The connectivity of marine populations and the degree to which they are considered open or closed has important implications for the ecology, management, and resilience of commercially harvested species. Larval exchange is a primary determinant of the level of connectivity between populations, and this thesis examines the intrinsic and extrinsic factors influencing larval transport and the distribution of larvae of the American lobster (Homarus americanus). The potential for larval transport is directly proportional to the planktonic larval duration. Our field data suggest development times in situ were up to three times faster than previous laboratory development times, indicating that potential ...


Nest Success And Chick Survival Of Black Terns In Maine: Effects Of Predation On Breeding Productivity, Shane R. Heath Aug 2004

Nest Success And Chick Survival Of Black Terns In Maine: Effects Of Predation On Breeding Productivity, Shane R. Heath

Electronic Theses and Dissertations

Nest predation is a prominent cause of reproductive failure in wetland-nesting birds, including black terns. As a result, predator avoidance should play an important role in nest site selection. I examined intraspecific variation in nest success to identify factors affecting nest predation of black tern colonies in central Maine. I measured variables related to proximity of wetland features and nest aggregation for 231 successful and 124 depredated black tern nests during the period 1998-2002. I defined candidate models based on logistic regression and selected models with Akaike's Information Criterion adjusted for small sample sizes (AICc) to determine the ...


Lifestyle Intervention Program With Calcium Supplementation To Promote Weight Loss And Body Fat Reduction In Overweight Individuals., Candee Meredith Spence May 2004

Lifestyle Intervention Program With Calcium Supplementation To Promote Weight Loss And Body Fat Reduction In Overweight Individuals., Candee Meredith Spence

Electronic Theses and Dissertations

The purpose of this study was to determine if there was a significant difference in weight loss, body fat, waist circumference, or diet quality among participants taking calcium or placebo supplements in a lifestyle intervention program. Three participants ages 52-55 completed the 14 week program. Two participants took 1,000 milligrams calcium while one participant took a placebo. Changes in diet were analyzed by Nutribase IV and self perception. Anthropometrics were analyzed by analysis of variance, alpha level 0.05. There was significant decrease in weight and waist circumference for the calcium group and decrease in bioelectrical impedance for the ...


Enhancing Weight Gain In Long-Term Care Residents At Risk For Weight Loss Through Protein And Calorie Fortification., Shannon Marie Tolbert May 2004

Enhancing Weight Gain In Long-Term Care Residents At Risk For Weight Loss Through Protein And Calorie Fortification., Shannon Marie Tolbert

Electronic Theses and Dissertations

Purpose of this study was to compare two methods of supplementing diets in order to provide additional protein and calories to increase body weight. The study consisted of two groups from the James H. Quillen Veterans Affair Medical Center Nursing Home Care Unit. Experimental group received foods fortified with increased calories and protein at mealtimes. Control group received nutrition supplements between meals. Fifteen subjects began the study. Analysis of weight change revealed that those in the experimental group had no weight change over the four months. Subjects in the control group gained an average of 4.8 lbs of body ...


Population Size And Movements Of Spotted Salamanders At South Holston Dam, Sullivan County, Tennessee., Eric Alexander Smith May 2004

Population Size And Movements Of Spotted Salamanders At South Holston Dam, Sullivan County, Tennessee., Eric Alexander Smith

Electronic Theses and Dissertations

In the Southern Appalachians, there are growing concerns about Spotted Salamanders (Ambystoma maculatum) due to habitat destruction and the uncertain future of their forested riparian habitat. In this study, I establish baseline data of a population of Spotted Salamanders so future monitoring of this population can be performed. The study site is located in northeastern Tennessee, just east of the city of Bristol. It is a vernal pond at the Osceola Island Recreation Area one mile below the South Holston Dam on Holston View Dam road. A drift fence was established completely around the perimeter of the vernal pond to ...


Efficacy Of Different Educational Methods For A High School Prenatal Substance Use Prevention And Nutrition Program., Kimberly Renee Webb May 2004

Efficacy Of Different Educational Methods For A High School Prenatal Substance Use Prevention And Nutrition Program., Kimberly Renee Webb

Electronic Theses and Dissertations

The purpose of this study was to increase knowledge of the effects of prenatal substance use and to introduce the special nutritional needs of pregnancy in two counties in a region with high rates of low birth weight and prenatal substance abuse. A comparison of the efficacy of the educational program being delivered by a registered dietitian or by a group of high school students trained by the dietitian was performed. One hundred six high school students participated in the program and took identical pre- and posttests. The tests were compared to measure knowledge gain and were analyzed by paired ...


Nutritional Content Of Supplemental Food Baskets Distributed By Charitable Agencies In Northeast Tennessee., Lillian Khalili Aliata May 2004

Nutritional Content Of Supplemental Food Baskets Distributed By Charitable Agencies In Northeast Tennessee., Lillian Khalili Aliata

Electronic Theses and Dissertations

The purpose of this study was to determine if the nutritional needs of high-risk community members are met by supplemental food baskets distributed by charitable groups in northeast Tennessee. Hunger is a real problem among the area's elderly population, as 14.3% of the populations live at or below the poverty level. Data were collected using observation interviews at the food bank. A nutrient analysis tool was used to analyze the nutrient content of food items in a standard food basket. The findings were compared to the recommended dietary allowance for the elderly population. The supplemental food basket was ...


Influence Of Diets Formulated To Increase The Supply Of Ketones Or Ketone Precursors On The Carbohydrate Status And Performance Of Transition Dairy Cows, Jeffrey Michael Defrain Jan 2004

Influence Of Diets Formulated To Increase The Supply Of Ketones Or Ketone Precursors On The Carbohydrate Status And Performance Of Transition Dairy Cows, Jeffrey Michael Defrain

Electronic Theses and Dissertations

Research to date has focused on increasing the supply of glucose precursors in transition dairy cows to reduce ketosis. Ketones and ketone bodies represent energy sources for body tissues; therefore, conserving blood glucose for lactose synthesis in the mammary gland. This led to the hypothesis that transition cows might benefit from diets formulated to stimulate rumen epithelial ketogenesis or dietary ingredients supplying ketone precursors. A series of experiments were conducted to study the impact of diets formulated to increase the supply of ketones (via feeding lactose, glycerol, or an alphaamylase enzyme preparation) or ketone precursors (feeding Ca soaps of longchain ...


Cellular Immune Response And Gene Expression Profiling In Crohn's Dise, Claudia Romero Jan 2004

Cellular Immune Response And Gene Expression Profiling In Crohn's Dise, Claudia Romero

Electronic Theses and Dissertations

Despite the chronic debate in the etiology of crohn's disease (cd), a debilitating inflammatory bowel disease (ibd) closely related to ulcerative colitis (uc), an emerging interest in a possible mycobacterial role has been marked. Granuloma and pathologic manifestations in cd resemble aspects found in tuberculosis, leprosy and paratuberculosis. The latter, a chronic enteritis in cattle, goat, sheep and primates, which is similar to human enteritis, also known as cd, is caused by a fastidious, slow growing mycobacterium avium subspecies paratuberculosis (map). Due to the similarities between cd and paratuberculosis, a mycobacterial cause in cd has been proposed. Recent discovery ...


Population Genetics Analysis Of The Grass Shrimp Palaemonetes Pugio Using Single Strand Conformation Polymorphism, Melody A. Flowers Jan 2004

Population Genetics Analysis Of The Grass Shrimp Palaemonetes Pugio Using Single Strand Conformation Polymorphism, Melody A. Flowers

Electronic Theses and Dissertations

Little is known about the genetic structure of grass shrimp, Palaemonetes pugio, populations or the effects the parasite Microphallus turgidus has on it. The objective of this study was to determine the amount of genetic diversity of the shrimp populations based on locality and parasite load. In order to examine the genetics of P. pugio, shrimp DNA was extracted and scanned using single stand conformation polymorphism. Results revealed P. pugio populations are highly conserved among localities. This suggests a significant amount of gene flow is taking place. Results also indicate there is no correlation between the most common host haplotype ...


The Prevalence Of The Q-Fever Agent Coxiella Burnetii In Ticks Collected From An Animal Shelter In Southeast Georgia, John H. Smoyer Iii Jan 2004

The Prevalence Of The Q-Fever Agent Coxiella Burnetii In Ticks Collected From An Animal Shelter In Southeast Georgia, John H. Smoyer Iii

Electronic Theses and Dissertations

Author's abstract: Q-fever is a zoonosis caused by a worldwide-distributed bacterium Coxiella burnetii. Ticks are vectors of the Q-fever agent but play a secondary role in transmission because the agent is also transmitted via aerosols. Most Q-fever studies have focused on farm animals but not ticks collected from dogs in animal shelters. In order to detect the Q-fever agent in these ticks, a nested PCR technique targeting the 16S rDNA of Coxiella burnetii was used. A collection of 450 ticks from the animal shelter were screened via nested PCR and 144 (32%) were positives. The positive PCR products were ...


Leaf Area Index - Relative Density Relationships In Even-Aged Abies Balsamea - Picea Rubens Stands In Maine, Robert Justin Derose Jan 2004

Leaf Area Index - Relative Density Relationships In Even-Aged Abies Balsamea - Picea Rubens Stands In Maine, Robert Justin Derose

Electronic Theses and Dissertations

Relationships between leaf area index (LAI) and relative density (RD) were examined in even-aged stands of Abies balsunzen (L.) Mill. and Piceu rubens Sarg. Twelve sites distributed across the Acadian forest in Maine were used to test conformance to three hypothesized models of LA1 over RD: A) constantly increasing LA1 over increasing RD, B) constant LA1 with increasing RD, or C) decreasing LA1 with increasing RD. Multivariate ordination suggested young, precommercially thinned (PCT), high-siteindex (SI) A. balsamea stands should be analyzed separate from older, unspaced (NOPCT), lower-site P. rubens stands. All-sided A. balsamea LAIs ranged from 6.2 - 14.8 ...


Development And Light Response Of Leaves Of Metasequoia And Close Relatives, Xiaochun Li Jan 2004

Development And Light Response Of Leaves Of Metasequoia And Close Relatives, Xiaochun Li

Electronic Theses and Dissertations

Metasequoia glyptostroboides is a useful nearest living relative (NLR) of the Eocene fossil Metasequoia. Research on modern Metasequoia might give us some clues about its fossil counterpart. During this study the leaf anatomy of Metasequoia, Glyptostrobus, Sequoia and Taxodium was investigated with light microscopy and transmission electron microscopy. Metasequoia exhibits several characteristics of typical sciaphilic plants, such as slightly arched outer cell walls in the adaxial epidermal cells, strongly arched outer cell walls in the abaxial epidermal cells, mesophyll composed of spongy cells, chloroplasts with well-developed grana not only in mesophyll cells but in both the adaxial and abaxial epidermis ...


Aesthetic Values Of Five Primary Wood Transporting Methods Common To Northern New England, Michael C. Eckley Jan 2004

Aesthetic Values Of Five Primary Wood Transporting Methods Common To Northern New England, Michael C. Eckley

Electronic Theses and Dissertations

Throughout northern New England and across the country, increasing populations and the exurbanization of rural forested landscapes have had a tremendous impact on forest management. As forested areas become more populated, society has become more exposed to the sights and sounds associated with different forest operations. As a result, aesthetics are increasingly driving public reaction to and concern about forestry practices, especially timber harvesting. How people perceive forestry harvesting can be significant in defining the future of forest management, particularly in more populated woodlands. The objective of this study was to better understanding public values as they relate to timber ...


Molecular Typing Of Mycobacterial Isolates Cultured From The Tissue Of Inflammatory Bowel Disease (Crohn's Disease) Patients, Leanne M. Adams Jan 2004

Molecular Typing Of Mycobacterial Isolates Cultured From The Tissue Of Inflammatory Bowel Disease (Crohn's Disease) Patients, Leanne M. Adams

Electronic Theses and Dissertations

The role of Mycobacterium avium subsp paratuberculosis (MAP) in the etiology and pathogenesis of inflammatory bowel disease (IBD) including Crohn's Disease (CD), has been investigated. The fastidious characteristics and cross reactivity of MAP with other members in Mycobacteria have produced significant challenges in their detection and identification. In this two year pilot study, an array of three PCR molecular assays based on the detection of sequences from the16S rRNA, IS1245, and IS900 genes, belonging to members of the MAC, have been developed and optimized into a common protocol to be used as a rapid and accurate diagnostic tool regarding ...


Recruitment And Restoration Of The Oyster Crassostrea Virginica In Areas With Intense Boating Activity In Mosquito Lagoon, Florida, Lisa Michele Wall Jan 2004

Recruitment And Restoration Of The Oyster Crassostrea Virginica In Areas With Intense Boating Activity In Mosquito Lagoon, Florida, Lisa Michele Wall

Electronic Theses and Dissertations

Productivity, diversity and survival of estuaries are threatened by explosive coastal population growth and associated recreational activities. One major area of recreational growth has been the number of small pleasure craft motoring in shallow waters at high speeds. On the east coast of Central Florida in the Indian River Lagoon system, intense boating activity occurs year-round and intertidal reefs of the eastern oyster Crassostrea virginica with dead margins (piles of disarticulated shells) on their seaward edges are commonly found adjacent to major boating channels. The cause(s) of the dead margins is unclear. However, the disarticulated shells may be reducing ...


Habitat Use And Seasonal Activity Of Selected Snakes On John F. Kenned, Karen Dyer Jan 2004

Habitat Use And Seasonal Activity Of Selected Snakes On John F. Kenned, Karen Dyer

Electronic Theses and Dissertations

An intensive, replicated monthly sampling of snake communities inhabiting four habitat types was conducted at John F. Kennedy Space Center, Brevard County, Florida from November 2002 through October 2003. Thirteen species (580 individuals plus 74 recaptures) plus one hybrid were captured. The three most commonly captured species, Coluber constrictor, Thamnophis sirtalis, and Thamnophis sauritus, combined made up 85% of the sample. These three species were active during every month of the year, but showed modal activity patterns typical of Temperate Zone snakes. Monthly snake captures were correlated with monthly captures of potential prey species and with mean monthly temperature. Species ...


Characterization Of A Novel Interactor/Substrate For The Pro-Apoptotic Serine Protease Omi/Htra2, Valerie Anne Stratico Jan 2004

Characterization Of A Novel Interactor/Substrate For The Pro-Apoptotic Serine Protease Omi/Htra2, Valerie Anne Stratico

Electronic Theses and Dissertations

OmiHtrA2 is a highly conserved mammalian serine protease that belongs to the HtrA family of proteins. Omi shares homology with the bacterially expressed heat shock protease HtrA, which functions as a protease at higher temperatures and a chaperone at lower temperatures. Additionally, Omi shares sequence similarity with the mammalian homologs L56/HtrA1 and PRSP/HtrA3. Omi was first isolated as an interacting protein of Mxi2, an alternatively spliced form of the p38 stress-activated kinase, using a modified yeast two-hybrid system. Omi localizes in the mitochondria and in response to apoptotic stimuli the mature form of this protein translocates to the ...


Evaluation Of Immunogenicity Of Transgenic Chloroplast Derived Protect, Vijay Koya Jan 2004

Evaluation Of Immunogenicity Of Transgenic Chloroplast Derived Protect, Vijay Koya

Electronic Theses and Dissertations

Anthrax, a fatal bacterial infection is caused by Bacillus anthracis, a gram-positive, spore forming, capsulated, rod shaped organism. Centers for Disease Control (CDC) lists anthrax as Category A biological agent due to its severity of impact on human health, high mortality rate, acuteness of the disease and potential for delivery as a biological weapon. The currently available human vaccine in the United States (AVA anthrax vaccine adsorbed) is prepared from Alum adsorbed formalin treated supernatant culture of toxigenic, non-encapsulated strain of Bacillus anthracis with the principle component being protective antigen (PA83). Evaluation of anthrax vaccine given to nearly 400,000 ...


Interactions Between The Nudibranch Okenia Zoobotryon And Its Bryozoan, Nicole Robinson Jan 2004

Interactions Between The Nudibranch Okenia Zoobotryon And Its Bryozoan, Nicole Robinson

Electronic Theses and Dissertations

In the Indian River Lagoon, the nudibranch Okenia zoobotryon and its egg masses are found attached to the bryozoan Zoobotryon verticillatum throughout the year. Okenia zoobotryon is thought to live, feed, and reproduce exclusively on Z. verticillatum, which would make this a very specialized predator-prey interaction. The primary goal of my study was to document certain aspects of the ecological and chemical relationships between Z. verticillatum and O. zoobotryon. Specifically, I wanted to understand the cues used by the nudibranch to locate and remain on Z. verticillatum. Population surveys on Z. verticillatum, as well as other potential hosts, were performed ...


Survival Of Mycobacterium Avium Subspecies Paratuberculosis In The Pol, John Rumsey Jan 2004

Survival Of Mycobacterium Avium Subspecies Paratuberculosis In The Pol, John Rumsey

Electronic Theses and Dissertations

Mycobacterium avium subspecies paratuberculosis (map) is an intracellular pathogen that is known to parasitize macrophages and monocytes. Map infiltrates gastrointestinal tract host tissue where it is the known etiological agent of johne's disease in ruminants and implicated in the etiology of crohn's disease in humans. Map's ability to survive within macrophages enables it to disseminate throughout the rest of the host, possibly infecting other circulating blood leukocytes. In this study, the survival and fate of map strain atcc 43015 (human isolate) following phagocytosis was determined using in vitro murine macrophage cell line j774a.1 and polymorphonuclear cells ...


The Ecology Of Drift Algae In The Indian River Lagoon, Florida, Julie Lynnae Liss Jan 2004

The Ecology Of Drift Algae In The Indian River Lagoon, Florida, Julie Lynnae Liss

Electronic Theses and Dissertations

To gain an understanding of the ecology of drift algae in the Indian River Lagoon system along the east coast of central Florida, four questions were addressed: 1) What is the composition and rate of accumulation of drift? 2) How much movement and turnover occurs within drift accumulations? 3) Do growth rates differ for drift versus attached algae? 4) Is there a difference in photosynthetic performance in drift versus attached algal species? Manipulative field and laboratory experiments were conducted to address these questions with the green macroalga Codium decorticatum and the red macroalga Gracilaria tikvahiae. Changes in pigment concentration and ...