Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Law (9167)
- Social and Behavioral Sciences (7651)
- Arts and Humanities (5535)
- Education (3588)
- Physical Sciences and Mathematics (2761)
-
- Life Sciences (2476)
- Anthropology (2074)
- Archaeological Anthropology (1897)
- Engineering (1795)
- Medicine and Health Sciences (1650)
- Business (1485)
- History (1383)
- Higher Education (1337)
- Religion (1174)
- Library and Information Science (868)
- Communication (824)
- Sociology (746)
- English Language and Literature (742)
- Public Affairs, Public Policy and Public Administration (735)
- Creative Writing (645)
- Educational Administration and Supervision (628)
- Economics (611)
- Psychology (594)
- Environmental Sciences (590)
- Animal Sciences (585)
- International Law (576)
- Civil and Environmental Engineering (575)
- Computer Sciences (558)
- Plant Sciences (526)
- Higher Education Administration (522)
- Institution
-
- University of Nebraska - Lincoln (2228)
- Kenyon College (2054)
- Brigham Young University Law School (1801)
- University of Montana (1640)
- Eastern Illinois University (1269)
-
- University of South Florida (1193)
- University of Mississippi (1109)
- University of New Mexico (988)
- University of New Hampshire (850)
- Brigham Young University - Hawaii (800)
- TÜBİTAK (706)
- Brigham Young University (661)
- Missouri University of Science and Technology (641)
- University of Colorado Law School (616)
- Louisiana State University (597)
- University of Dayton (579)
- Utah State University (572)
- California Polytechnic State University, San Luis Obispo (559)
- University of Malaya (526)
- University of Alabama at Birmingham (522)
- Purdue University (478)
- Chulalongkorn University (458)
- Villanova University Charles Widger School of Law (446)
- Nova Southeastern University (434)
- Western Michigan University (421)
- Western Kentucky University (414)
- West Virginia University (412)
- University of Northern Iowa (397)
- San Jose State University (393)
- Georgia Southern University (386)
- Keyword
-
- Press release; media release; press statement; news media information (591)
- EIU (489)
- 2001 (479)
- News Releases (418)
- Latin America (412)
-
- Spanish (411)
- English (400)
- Newspaper (400)
- UNM (388)
- University of New Mexico (388)
- LADB (387)
- LAII (387)
- Latin American and Iberian Institute (387)
- Education (363)
- DeafDigest (308)
- Campus News (303)
- Syllabi (295)
- Newsletter (287)
- History (258)
- Kentucky (225)
- Bowling Green State University (205)
- Deaf Sports News (204)
- Journal (182)
- Deaf culture (172)
- Eastern Illinois University (172)
- Church work with the deaf -- Catholic Church (171)
- Deaf -- Periodicals (171)
- Hearing impaired (171)
- Pastoral care of people with disabilities (171)
- Daily Eastern News (166)
- Publication
-
- Four Valleys Archive (1851)
- Utah Supreme Court Briefs (2000–2020) (1168)
- Obituaries (730)
- Faculty Publications (599)
- University of Montana News Releases, 1928, 1956-present (591)
-
- University of Montana Course Syllabi (535)
- Utah Court of Appeals Briefs (1996–2006) (534)
- Faculty Scholarship (501)
- Theses and Dissertations (495)
- Student Works (2000-2009) (450)
- Session Laws 2001-Present (444)
- University of Mississippi News (418)
- International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics (356)
- 2001 (330)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (322)
- The Murray Ledger & Times (309)
- 2001 Decisions (304)
- News Releases (302)
- Media Relations (297)
- Articles (293)
- Browse All News (293)
- Theses (258)
- Against the Grain (242)
- Saudi Medical Journal (241)
- Syllabi (234)
- News and Events (Discontinued Series) (231)
- Theses Digitization Project (222)
- Vincentiana (218)
- LSU Historical Dissertations and Theses (212)
- DeafDigest Sports 2001 (204)
- Publication Type
- File Type
Articles 52231 - 52260 of 55069
Full-Text Articles in Entire DC Network
What Does The Second Amendment Restrict? A Collective Rights Analysis, Carl Bogus
What Does The Second Amendment Restrict? A Collective Rights Analysis, Carl Bogus
Law Faculty Scholarship
No abstract provided.
Sustaining Agropastoralism On The Bolivian Altiplano: The Case Of San José Llanga, David Layne Coppock, Corinne Valdivia
Sustaining Agropastoralism On The Bolivian Altiplano: The Case Of San José Llanga, David Layne Coppock, Corinne Valdivia
Utah State University Faculty Monographs
No abstract provided.
Aviation, Herbert Hoover And His “American Plan”, Randy Johnson
Aviation, Herbert Hoover And His “American Plan”, Randy Johnson
Journal of Aviation/Aerospace Education & Research
No abstract provided.
The Relationship Between Jealousy And Self-Esteem In Collegiate Athletes, Paula M. Parker
The Relationship Between Jealousy And Self-Esteem In Collegiate Athletes, Paula M. Parker
College of Graduate Studies: Theses & Dissertations (1964–2006)
Previous research has found contradictory results when examining the possible relationship between jealousy and self-esteem (Guerrero & Afifi, 1998, Mathes & Severa, 1981; Mikulincer, Bizman, & Aizenberg, 1989, Peretti & Pudowski, 1997; Stewart & Beatty, 1985; White, 1981). Jealousy has been most often researched in romantic relationships (Peretti & Pudowski, 1997; Salovey & Rodin, 1986) and social comparison situations (Bers & Rodin, 1984, Mikulincer, Bizman, & .Aizenberg, 1989). Few studies have examined jealousy in an athletic setting. Sport jealousy has received little attention because until recently, there was no reliable instrument to measure jealousy in sport. Pease (1987) investigated the …
Gulfstream Aerospace Aircraft Static Position Utility, Mark Eugene Ray
Gulfstream Aerospace Aircraft Static Position Utility, Mark Eugene Ray
College of Graduate Studies: Theses & Dissertations (1964–2006)
My research project implements a Java based utility developed for commercial application by Gulfstream Aerospace employees and customers to determine static position data of Gulfstream aircraft. The static position data includes aircraft attitude, nose and main landing gear loads and aircraft ground clearance data.
The previous methods used to obtain this data were a family of spreadsheets. The spreadsheet solution has proven to be awkward and inaccessible for providing the required data. Therefore, Gulfstream Aerospace Management approved the design and implementation of a new aircraft static position utility.
The new utility is identified as the Gulfstream Aircraft Static Position (GASP) …
Group Viii Spiroplasma Of Costa Rica, Kimberly M. Stewart
Group Viii Spiroplasma Of Costa Rica, Kimberly M. Stewart
College of Graduate Studies: Theses & Dissertations (1964–2006)
Spiroplasma bacteria isolates are classified or identified through a series of serological tests that normally consists of screening, one-way deformation tests, cloning, antisera production, and reciprocal deformation tests. Serological tests on the spiroplasmas are followed by molecular analysis. The standard molecular analysis used for spiroplasmas has been 16S rRNA sequencing. The primary goal ofmy research was to evaluate serologically Group VIII spiroplasmas isolated from tropical Costa Rican tabanids (Diptera: Tabanidae) and to compare them to the temperate North American Group VIII spiroplasmas. A secondary goal was to evaluate both the temperate and tropical Group VIII strains by sequencing the 16S-23S …
Bullying In A Primary School : A Case Study, Christopher Graham Lee
Bullying In A Primary School : A Case Study, Christopher Graham Lee
Plymouth Institute of Education Theses
Bullying has become a significant issue for schools and one that has attracted the media spotlight. It has also received considerable attention from the research community since the late 1980s following the tradition established through the work of many Scandinavian researchers. Much of the research has been longitudinal and sought to illuminate the experience of children who bullied or were being bullied. There has been considerably less research into teachers' and parents' understanding and experience of bullying between school children. This thesis seeks to rectify that situation by examining the views of Year 5 and 6 pupils, teachers and a …
A Description Of New Teacher Induction Programs In The State Of Georgia, Judi Harris Wilson
A Description Of New Teacher Induction Programs In The State Of Georgia, Judi Harris Wilson
College of Graduate Studies: Theses & Dissertations (1964–2006)
The purpose of this study was to descriptively analyze new teacher induction programs across the state of Georgia regarding the support programs school districts provided for new teachers. Subjects for this study were 500 randomly selected Georgia teachers who completed their first year of teaching during the 1999-2000 school year. Participation in this study required that the subjects complete and return a survey developed in 1990 by Dr. Shelby Talley and modified by the researcher for this study. There were 327 surveys returned with a collective response rate of 65.4%.
This study found that induction practices to socialize new teachers …
Process Of Change In Teaching And Learning In Higher Education : Integrating Information And Communication Technology, Susan Janet English
Process Of Change In Teaching And Learning In Higher Education : Integrating Information And Communication Technology, Susan Janet English
Plymouth Institute of Education Theses
The focus of this thesis was inspired by a small study investigating the way in which students could learn co-operatively using computer-mediated communication. Lessons learnt about the significance of purpose, context, nature and design of courses involving Information and Communication Technology (ICT) led to the idea that a holistic view, involving the study of all aspects that contribute to the whole context, would be necessary to reach a better understanding of the process of change in teaching and learning. The opportunity to pursue this route materialised by being part of a team on a national, ESRC funded, project to undertake …
Measurement And Modelling Of Uranium And Thorium In Natural Waters, Ernily Rachel Unsworth
Measurement And Modelling Of Uranium And Thorium In Natural Waters, Ernily Rachel Unsworth
School of Geography, Earth and Environmental Sciences Theses
Uranium and thorium are the only elements in the actinide series which naturally occur in the environment in sufficient amounts for practical extraction. They are both radiotoxic and chemotoxic to humans due to the effects of the ionising radiation produced by their radioactive decay, the decay of their daughter products, and due to the chemical toxicity resulting from absorption into the body. Thus it is important to be able to quantitatively determine the levels of uranium and thorium in the environment. Measurement of low levels of uramum and thorium in the presence of high levels of inorganic and organic matrix …
Investigation Of Chemometrics Methods For Characterising Drift Phenomena In Ick-Aes, Ana Maria Marcos-Dominguez
Investigation Of Chemometrics Methods For Characterising Drift Phenomena In Ick-Aes, Ana Maria Marcos-Dominguez
School of Geography, Earth and Environmental Sciences Theses
The objective of this study was to fully characterise drift phenomena in inductively coupled plasma atomic emission spectroscopy (ICP-AES) in order to develop novel correction procedures to aid routine analysis. Long-term drift of the analytical signal continues to be a potential disadvantage when using ICP-AES and often necessitates regular recalibration. The long-term stability of three commercially available Instruments was studied using In each case a range of analyte and intrinsic plasma emission lines. Long-term fluctuations were observed which generated drift bias of up to 20% on the initial values. The drift pafterns were characterised and found to be qualitatively reproducible. …
Appraisal And Validation Of Rapid, Integrated Chemical And Biological Assays Of Environmental Quality, Gilberto Fillmann
Appraisal And Validation Of Rapid, Integrated Chemical And Biological Assays Of Environmental Quality, Gilberto Fillmann
School of Geography, Earth and Environmental Sciences Theses
To assess the significance of pollutants released into the environment it is necessary to determine both the extent of contamination and the biological effects they give rise to. This research is based on a tiered system, which commences with conventional analytical chemistry (gas chromatography), followed by the development, evaluation and application of rapid and simple immunochemical techniques and, finally, the integration of chemical and biological markers to assess pollution. GC-ECD/FID/MS have been used to investigate the status of chemical contamination of the Black Sea by organochlorine residues, hydrocarbons and faecal sterols. Useful information is provided and problems with e.g. HCHs …
Palaeoecology, Palaeoenvironmental Analysis And Their Application To Sequence Stratigraphy: Lower Cretaceous, Lusitanian Basin, Portugal, Gary Stefan Aillud
Palaeoecology, Palaeoenvironmental Analysis And Their Application To Sequence Stratigraphy: Lower Cretaceous, Lusitanian Basin, Portugal, Gary Stefan Aillud
School of Geography, Earth and Environmental Sciences Theses
Palaeoecological data can provide key information on depositional environments. This may be critical to the interpretation of marine sedimentary cycles and the recognition of ancient cycles and sequences. Although many recent studies have attempted to combine palaeoecology and sequence stratigraphy, the sequence stratigraphic model is commonly used to provide a temporally constrained framework for the evaluation of ecological and evolutionary events. This study shows how palaeoecology can be used as a powerful tool in the development of sequence stratigraphic models. A palaeoecological study of three Lower Cretaceous successions (at Ericeira, Cascais, Cabo Espichel) from the southern part of the Lusitanian …
Multivariate Calibration For Icp-Aes, Michael Lee Griffiths
Multivariate Calibration For Icp-Aes, Michael Lee Griffiths
School of Geography, Earth and Environmental Sciences Theses
The analysis of metals is now a major application area for ICP-AES, however, the technique suffers from both spectral and non-spectral interferences. This thesis details the application of univariate and multivariate calibration methods for the prediction of Pt, Pd, and Rh in acid-digested and of Au, Ag and Pd in fusion-digested autocatalyst samples. Of all the univariate calibration methods investigated matrix matching proved the most accurate method with relative root mean square errors (RRMSEs) for Pt, Pd and Rh of 2.4, 3.7, and 2.4 % for a series of synihelic lest solutions, and 12.0, 2.4, and 8.0 % for autocatalyst …
An Investigation Of Captive Florida Manatee (Trichecus Manatus Latirostris) Behavior And Social Interactions, Jennifer Sadler Young
An Investigation Of Captive Florida Manatee (Trichecus Manatus Latirostris) Behavior And Social Interactions, Jennifer Sadler Young
College of Graduate Studies: Theses & Dissertations (1964–2006)
Human impacts such as pollution, habitat alteration, and boating have caused many injuries and deaths of the Florida manatee, Trichechus manutus latirostris. Rehabilitation centers have been established in Florida to help return sick or injured manatees back to the wild. Manatees that are released back to the wild after undergoing rehabilitation in captivity might lose some of their abilities to survive in the wild. A factor that might alter behavior in captive individuals was examined by determining if length of time spent in captivity influenced the behavior of manatees during rehabilitation. Even though all facilities follow similar guidelines, invariable …
Determination Of Co And Mn In Marine Waters Using Flow Injection With Chemiluminescence Detection, Vincenzo Cannizzaro
Determination Of Co And Mn In Marine Waters Using Flow Injection With Chemiluminescence Detection, Vincenzo Cannizzaro
School of Geography, Earth and Environmental Sciences Theses
This thesis describes the design, optimisation and shipboard deployment of a flow injection - chemiluminescence (FI-CL) technique for the determination of cobalt (Co) and manganese (Mn) in seawater. Chapter One presents an overview of the marine environment and the biogeochemistry of Co and Mn. Current analytical methods for the determination of Co and Mn in natural waters are also reviewed. Chapter Two reports reagent clean-up techniques and the synthesis of an 8- hydroxyquinoline resin used for in-line matrix elimination and preconcentration. The resin is also characterised in terms of its chelating ability for the transition metals and the earth alkaline …
Molecular Characterisation Of Fluidised Catalytic Cracker Feedstocks Using Ruthenium Tetroxide Oxidation: A Study Of Model Hydrocarbons, Helen Frances Sturt
Molecular Characterisation Of Fluidised Catalytic Cracker Feedstocks Using Ruthenium Tetroxide Oxidation: A Study Of Model Hydrocarbons, Helen Frances Sturt
School of Geography, Earth and Environmental Sciences Theses
The world's proven reserves of crude oil will be depleted in 42 years at the current rate of consumption. Oil refiners are under considerable economic and environmental pressure to improve the efficiency of refining and the quality and definition of products. Statistical and fundamental models are extensively used to more accurately model the important refinery processes such as Fluidised Catalytic Cracking (FCC). A major problem with the fundamental approach is that FCC feedstocks are by definition heavy petroleum fractions, and as such constitute highly complex mixtures of aromatic and aliphatic hydrocarbons. Gas chromatography (GC) analysis of heavy petroleum fractions reveals …
Catchment Scale Monitoring And Modelling Of Phosphorus Using Flow Injection Analysis And An Export Coefficient Model, Grady Scott Hanrahan
Catchment Scale Monitoring And Modelling Of Phosphorus Using Flow Injection Analysis And An Export Coefficient Model, Grady Scott Hanrahan
School of Geography, Earth and Environmental Sciences Theses
Acquiring high quality in situ analytical data with good temporal resolution is required for developing models of phosphorus transport and biogeochemical behaviour. Chapter One describes the behaviour of phosphorus in the aquatic environment, its sources, its role in the eutrophication process and legislation to control its release into aquatic systems. It also summarises analytical techniques for the determination of phosphorus in natural waters. An examination of the hypothesis that the export coefficient modelling approach can be used to predict phosphorus loading in the River Frome catchment, Dorset on an armual and seasonal (monthly) basis is presented in Chapter Two. The …
Magnetic Dating Of Vesuvian Lavas, Pasquale Tiano
Magnetic Dating Of Vesuvian Lavas, Pasquale Tiano
School of Geography, Earth and Environmental Sciences Theses
A palaeomagnetic study has been carried out on Vesuvian lava flows emplaced since 79 AD. This involved both palaeodirection and palaeointensity investigations of samples from sites on the W, S and SE slopes of the volcano. Thermal demagnetization of 3 component IRMs, susceptibility measurements and coercivity analyses have been carried out on one pilot specimen per site in order to identify the magnetic carriers and to estimate the magnetic grain size. The identificatìon of the primary direction of TRM was carried out following very stringent criteria (Incoronato, 1996). Palaeointensities were evaluated using both a modification of the Modified Thellier & …
European Union/South Africa Trade, Development And Co-Operation Agreement : Decision-Making, Participation And Perceived Economic Impacts, Roger John Levermore
European Union/South Africa Trade, Development And Co-Operation Agreement : Decision-Making, Participation And Perceived Economic Impacts, Roger John Levermore
School of Geography, Earth and Environmental Sciences Theses
The European Union-South Africa Trade, Development and Co-operation Agreement (EU/SA TDCA), signed in October 1999, is viewed by some in South Africa as not only one of the most important trade and development agreements entered into by the 'new' South African goverrunent, but also a significant agreement for setting precedents for other bi-lateral trade and development pacts between the EU and African, Caribbean and Pacific group of states. This thesis considers two major issues related to the EU/SA TDCA. First, it describes and evaluates the structures that supported the South African side of the TDCA decision-making process. Second, it discusses …
The Development Of A Holistic Expert System For Integrated Coastal Zone Management, Antoni Bruce Moore
The Development Of A Holistic Expert System For Integrated Coastal Zone Management, Antoni Bruce Moore
School of Geography, Earth and Environmental Sciences Theses
Coastal data and information comprise a massive and complex resource, which is vital to the practice of Integrated Coastal Zone Management (ICZM), an increasingly important application. ICZM is just as complex, but uses the holistic paradigm to deal with the sophistication. The application domain and its resource require a tool of matching characteristics, which is facilitated by the current wide availability of high performance computing. An object-oriented expert system, COAMES, has been constructed to prove this concept. The application of expert systems to ICZM in particular has been flagged as a viable challenge and yet very few have taken it …
An Evaluation Of The Environmental Fate Of Reactive Dyes, Malcolm John Hetheridge
An Evaluation Of The Environmental Fate Of Reactive Dyes, Malcolm John Hetheridge
School of Geography, Earth and Environmental Sciences Theses
Dyestuffs are widely used industrial chemicals, yet surprisingly little is known about their fate in the environment. The potential modes of transformation and removal of reactive dyes in treatment and in the environment are principally through anaerobic and aerobic biodegradation and photodegradation. The research herein describes the use of LC-MS analysis with laboratory simulations to develop a better understanding of the occurrence and fate of reactive dyes and their degradation products in the aquatic environment. One reason for the lack of information on the environmental fate of reactive dyes has been the paucity of robust analytical methods suitable for the …
The Biogeochemical Cycling Of Dissolved Organic Carbon In The Iberian Margin Upwelling System (Ne Atlantic Ocean, Geogina Spyres
The Biogeochemical Cycling Of Dissolved Organic Carbon In The Iberian Margin Upwelling System (Ne Atlantic Ocean, Geogina Spyres
School of Geography, Earth and Environmental Sciences Theses
Dissolved organic carbon (DOC) is the quantitatively most important organic carbon reservoir in the world's oceans and its determination at ocean margins, where the exchange of terrestrial and oceanic organic matter occurs, is important for estimating cross-slope fluxes to deep waters. With the increased accuracy and precision (-1%) of analytical methodologies, small changes in the DOC pool can be detected (i.e. 1- 2uM-C). This study investigated the biogeochemical cycling of DOC at the Iberian Margin upwelling system (42-43°N, --9-10°W), where contrasting seasonal hydrologic phenomena occur (e.g. summer upwelling, winter poleward current). Spatial and temporal DOC distributions were determined using high …
Absolute Geostrophic Velocity Within The Subantarctic Front In The Pacific Ocean, Kathleen A. Donohue, Erin Firing, Shuiming Chen
Absolute Geostrophic Velocity Within The Subantarctic Front In The Pacific Ocean, Kathleen A. Donohue, Erin Firing, Shuiming Chen
Graduate School of Oceanography Faculty Publications
Velocity measurements from a shipboard acoustic Doppler current profiler (ADCP) are used as a reference for geostrophic current calculations on six sections across the Subantarctic Front (SAF) in the Pacific Ocean. The resulting cross‐track velocity estimates near the bottom range from 4 to 10 cm s−1 to the east in the eastward jet at the SAF; in adjacent regions of westward surface flow, the near‐bottom velocity is usually to the west. On one section where simultaneous lowered ADCP velocity profiles are available, they confirm the results from the shipboard ADCP. Annual mean velocity sections from the Parallel Ocean Program …
A Characterization Of The North Atlantic Stmw Layer Climatology Using World Ocean Atlas 1994 Data, Michael A. Alfultis, Peter C. Cornillon
A Characterization Of The North Atlantic Stmw Layer Climatology Using World Ocean Atlas 1994 Data, Michael A. Alfultis, Peter C. Cornillon
Graduate School of Oceanography Faculty Publications
The North Atlantic Subtropical Mode Water (STMW) layer was identified based on its temperature, large thickness, and small temperature gradient. Comparisons between this method and identifying the STMW layer using a density-based (i.e., potential vorticity) criteria indicate that this method successfully identifies the STMW layer as the remnant of the previous winter's convective mixing. By using this temperature-based characterization of the STMW layer, this method was able to develop a climatology using the large number of expendable bathythermographs (XBTs) deployed between 1968 and 1988, and contained in the World Ocean Atlas 1994 historical hydrographic database. From this climatology, the STMW …
Annual And Interannual Changes In The North Atlantic Stmw Layer Properties, Michael A. Alfultis, Peter C. Cornillon
Annual And Interannual Changes In The North Atlantic Stmw Layer Properties, Michael A. Alfultis, Peter C. Cornillon
Graduate School of Oceanography Faculty Publications
Subtropical mode waters (STWMs) are water masses formed in winter by convective mixing on the equatorward side of western boundary currents in the subtropical gyres. After the return of the seasonal stratification in spring, it is found at the stratification minimum between the seasonal and main pycnoclines. By characterizing STMW primarily at the density gradient minimum, previous studies were limited in their ability to describe STMW properties over large temporal and spatial scales. Rather than using a density-based characterization, the North Atlantic STMW layer was identified here by its much smaller temperature gradient relative to the more stratified seasonal and …
The Impact Of Ocean Coupling On Hurricanes During Landfall, Weixing Shen, Isaac Ginis
The Impact Of Ocean Coupling On Hurricanes During Landfall, Weixing Shen, Isaac Ginis
Graduate School of Oceanography Faculty Publications
The impact of ocean coupling on landfalling hurricanes is studied using a coupled hurricane‐ocean model with idealized atmospheric and oceanic conditions. We focus here on coastal sea surface temperature responses and their effects on hurricanes during landfall. We find that given the ocean thermal stratification, the hurricane‐induced sea surface cooling is nearly independent of the ocean depth as long as the ocean is considerably deeper than the mixed layer. After the storm center moves inland, the near‐surface processes around the storm core area are influenced by the sea surface cooling behind and on the right side of the storm track …
Pfiesteria: Review Of The Science And Identification Of Research Gaps. Report For The National Center For Environmental Health, Centers For Disease Control And Prevention, Jonathan Samett, Gary S. Bignami, Robert Feldman, William Hawkins, Jerry Neff, Theodore Smayda
Pfiesteria: Review Of The Science And Identification Of Research Gaps. Report For The National Center For Environmental Health, Centers For Disease Control And Prevention, Jonathan Samett, Gary S. Bignami, Robert Feldman, William Hawkins, Jerry Neff, Theodore Smayda
Graduate School of Oceanography Faculty Publications
In connection with the CDC National Conference on Pfiesteria, a multidisciplinary panel evaluated Pfiesteria-related research. The panel set out what was known and what was not known about adverse effects of the organism on estuarine ecology, fish, and human health; assessed the methods used in Pfiesteria research; and offered suggestions to address data gaps. The panel's expertise covered dinoflagellate ecology; fish pathology and toxicology; laboratory measurement of toxins, epidemiology, and neurology. The panel evaluated peer-reviewed and non-peer-reviewed literature available through June 2000 in a systematic conceptual framework that moved from the source of exposure, through exposure research and dose, …
Zooplankton Feeding Behavior And Particle Selection In Natural Plankton Assemblages Containing Toxic Alexandrium Spp., Gregory J. Teegarden, Robert G. Campbell, Edward G. Durbin
Zooplankton Feeding Behavior And Particle Selection In Natural Plankton Assemblages Containing Toxic Alexandrium Spp., Gregory J. Teegarden, Robert G. Campbell, Edward G. Durbin
Graduate School of Oceanography Faculty Publications
Laboratory experiments suggest that toxic Alexandrium spp. cells are unpalatable to zooplankton grazers, and that toxic cells should be selectively avoided by zooplankton when feeding in mixtures of different prey species. Such avoidance, if practised in the wild, might contribute to harmful bloom formation by reducing losses of Alexandrium spp. due to grazing. In the spring of 1998 and 1999, during Œred tide¹ outbreaks in the southwestern Gulf of Maine, weekly experiments were performed using field collected natural water samples with ambient phytoplankton and dominant mesozooplankton grazers. The feeding response of Acartia hudsonica, Semibalanus balanoides nauplii, and Calanus finmarchicus …