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2010

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Articles 271 - 280 of 280

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The Transition Zone: Impact Of Riverbanks On Emergent Dragonfly Nymphs. Implications For Riverbank Restoration And Management, Kirsten Hope Martin Jan 2010

The Transition Zone: Impact Of Riverbanks On Emergent Dragonfly Nymphs. Implications For Riverbank Restoration And Management, Kirsten Hope Martin

Antioch University Dissertations & Theses

The use of riprap in the restoration and stabilization of riverine landscapes is an issue of concern for many ecologists. While current methods of bank stabilization, especially those involving the placement of rocks (riprap) along the waterline, are effective in controlling erosion their presence changes habitat components (slope, substrate composition, near-shore river velocity) at the river-land interface. The additional impacts of river current, water temperature, soil composition, slope, and water level fluctuation, may further imperil emerging nymphs. The purpose of this research is to document the effects of riprap, location (upriver or downriver of hydroelectric intake/outtake facilities), water level fluctuation, …

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The Prevalence And Determinants Of Breastfeeding Initiation And Duration In A Sample Of Women In Ireland, Roslyn Tarrant, Katherine Younger, Margaret Sheridan-Pereira, Martin White, John Kearney Jan 2010

The Prevalence And Determinants Of Breastfeeding Initiation And Duration In A Sample Of Women In Ireland, Roslyn Tarrant, Katherine Younger, Margaret Sheridan-Pereira, Martin White, John Kearney

Articles

Objective: To assess breast-feeding initiation and prevalence from birth to 6 months in a sample of mothers in Dublin, and to determine the factors associated with breast-feeding initiation and ‘any’ breast-feeding at 6 weeks in a sample of Irish-national mothers. Design: This prospective cross-sectional study involved the recruitment of women during the antenatal period, with subsequent follow-up of mothers who delivered healthy, term singleton infants, at 6 weeks and 6 months postpartum. Setting: Participants were recruited from antenatal clinics in the Coombe Women and Infants University Hospital, Dublin. Subjects: In all, 401 Irish-national and forty-nine non-Irish-national mothers met the criteria …

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Boldness And Intermittent Locomotion In The Bluegill Sunfish, Lepomis Macrochirus, Alexander D.M. Wilson, Jean Guy J. Godin Jan 2010

Boldness And Intermittent Locomotion In The Bluegill Sunfish, Lepomis Macrochirus, Alexander D.M. Wilson, Jean Guy J. Godin

School of Biological and Marine Sciences

No abstract provided.

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Foraging Behaviour And Brain Morphology In Recently Emerged Brook Charr, Salvelinus Fontinalis, Alexander D.M. Wilson, Robert L. Mclaughlin Jan 2010

Foraging Behaviour And Brain Morphology In Recently Emerged Brook Charr, Salvelinus Fontinalis, Alexander D.M. Wilson, Robert L. Mclaughlin

School of Biological and Marine Sciences

No abstract provided.

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Comparison Of The Oral Health And Self-Rated General Health Status Of Undergraduate Students In Taiwan And Japan, Chin-Shun Chang, Fong Ming Chang, Haruo Nakagaki, Ichizo Morita, Shinji Tsuboi, Yasuto Sakakibara, Tamotsu Yanagihara, Koji Watanabe, Colin Robinson Jan 2010

Comparison Of The Oral Health And Self-Rated General Health Status Of Undergraduate Students In Taiwan And Japan, Chin-Shun Chang, Fong Ming Chang, Haruo Nakagaki, Ichizo Morita, Shinji Tsuboi, Yasuto Sakakibara, Tamotsu Yanagihara, Koji Watanabe, Colin Robinson

Journal of Dental Sciences

Abstract Background/purpose Scores of the Oral Salutogenic Score (OSS) and Medical Outcomes Study Short Form-20 (MOS SF-20) of university students in Taiwan and Japan were determined to compare the oral and general health status of students in these 2 countries. Materials and methods The oral health of students enrolled in 1 national university and 1 private university from each country were examined by trained dentists. Student ages ranged 18–25 years with 674 (371 males and 303 females) from Taiwan and 1117 (506 males and 611 females) from Japan. For convenience, 1 national university and 1 private university from each country …

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The Isolation Of Viruses Infecting Archaea, Kenneth M. Stedman, Kate Porter, Mike L. Dyall-Smith Jan 2010

The Isolation Of Viruses Infecting Archaea, Kenneth M. Stedman, Kate Porter, Mike L. Dyall-Smith

Biology Faculty Publications and Presentations

A mere 50 viruses of Archaea have been reported to date; these have been investigated mostly by adapting methods used to isolate bacteriophages to the unique growth conditions of their archaeal hosts. The most numerous are viruses of thermophilic Archaea. These viruses have been discovered by screening enrichment cultures and novel isolates from environmental samples for their ability to form halos of growth inhibition, or by using electron microscopy to screen enrichment cultures for virus-like particles. Direct isolation without enrichment has not yet been successful for viruses of extreme thermophiles. On the other hand, most viruses of extreme halophiles, the …

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Patterns Of Habitat Suitability And Abundance Trends Of Current And Candidate Coastal Fish Species Of Concern In Louisiana, Elin Rose Sandy Jan 2010

Patterns Of Habitat Suitability And Abundance Trends Of Current And Candidate Coastal Fish Species Of Concern In Louisiana, Elin Rose Sandy

LSU Master's Theses

Louisiana’s estuaries and coastal waters play an important role in providing habitat for several estuarine-dependent species and also serve as a nursery for the juveniles of several other species. The current rate of land loss in Louisiana and the decline of estuarine-dependent species force us to improve our understanding of the recruitment of these species into Louisiana’s estuaries. Habitat suitabilities were developed for several fish species of concern (SOC) and other estuarine-dependent species across three environmental gradients, abundance patterns were developed for seasons, five-year intervals, and coastal study areas (CSAs). Chi-square analyses and ANOVAs were then used to test for …

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The Evolution Of Freeze Tolerance In A Historically Tropical Snail, Alice B. Dennis Jan 2010

The Evolution Of Freeze Tolerance In A Historically Tropical Snail, Alice B. Dennis

LSU Doctoral Dissertations

Geographic range differences among species may result from differences in their physiological tolerances. In the intertidal zone, marine and terrestrial environments intersect to create a unique habitat, across which physiological tolerance strongly influences range. The snail Melampus bidentatus occurs in coastal salt marshes in the western Atlantic and Gulf of Mexico. I have used sequence data from one mitochondrial (CO1) and two nuclear markers (histone H3 and a mitochondrial carrier protein, MCP) to identify three cryptic species within Melampus bidentatus, and to infer their relationships to other Melampus. To identify microhabitat differences between two cryptic species, I modeled their distributions …

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Influence Of Wetland Landscape Structure On Duck Nest Success At Malheur National Wildlife Refuge, Oregon, Daniel Robert Craver Jan 2010

Influence Of Wetland Landscape Structure On Duck Nest Success At Malheur National Wildlife Refuge, Oregon, Daniel Robert Craver

Geography Masters Research Papers

The decline of waterfowl populations and their requisite wetland habitats remains a concern. Because migratory bird refuges are often artificial landscapes of actively managed wetlands, and wildlife populations experience their greatest change during the breeding season, refuges should be designed to maximize breeding habitat. While past nest success studies have focused on at-nest variables, new approaches are needed to evaluate the effect of composition and configuration of plant communities at the landscape scale. This study aims to quantify landscape patterns within individual refuge management units to determine influence upon historical nesting success averages of ducks at Malheur National Wildlife Refuge …

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Trophic Implications Of Light Reductions For Amphibolis Griffithii Seagrass Fauna, Adam Gartner Jan 2010

Trophic Implications Of Light Reductions For Amphibolis Griffithii Seagrass Fauna, Adam Gartner

Theses: Doctorates and Masters

The ongoing threat of seagrass loss from reduced light availability, coupled with our lack of knowledge of associated trophic responses has motivated this characterization of the flow-on effects of light reductions to Amphibolis griffithii seagrass fauna. Recently, field manipulations of varying light reductions, induced disturbances in a A. griffithii seagrass meadow that have been shown to effect potential food resources and the structural complexity of seagrass habitats for macroinvertebrates. This offered the opportunity to assess the flow-on effects to seagrass for fauna, a topic that has seldom been examined. This study investigated the effects of different light reduction intensity (high: …

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