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Full-Text Articles in Life Sciences

Sediment Phosphorus Cycling In A Managed System Irondequoit Bay, N.Y., Daniel J. White Dec 2006

Sediment Phosphorus Cycling In A Managed System Irondequoit Bay, N.Y., Daniel J. White

Biology Master’s Theses

The current status of internal phosphorus loading was evaluated in Irondequoit Bay, NY, an embayment of Lake Ontario. Sediment core incubation experiments and phosphorus water column profiles were used to quantify the release rate of phosphorus from the deepwater sediments of Irondequoit Bay during summer periods of low hypolimnetic oxygen. The top 25 cm of sediment cores collected monthly from May 2004 through September 2004 were analyzed for total phosphorus, total manganese, total iron, and total aluminum. Phosphorus fractionation of the sediment cores was determined through sequential extraction. Phosphorus water column data collected during the summer of 2003 and 2004 ...


A Comparison Of Created And Natural Wetlands And The Effect Of Landscape Characteristics On Vegetation, Amphibian And Bird Variables In Freshwater Marshes Of Upstate New York, David W. Porter Aug 2006

A Comparison Of Created And Natural Wetlands And The Effect Of Landscape Characteristics On Vegetation, Amphibian And Bird Variables In Freshwater Marshes Of Upstate New York, David W. Porter

Biology Master’s Theses

Wetlands provide a number of ecological and social functions, including flood abatement, improvement of water quality, recharge ground water and support for a great diversity of flora and fauna. Despite their many functions and values, wetlands have not always been appreciated. Since the 1780s, it is estimated that 53% of wetland acreage in the United States has been lost due to draining, filling and the subsequent development of land for roads or farms.

In 1972, the Clean Water Act (CWA) was established to try to reverse declining wetland acreage in the U.S. According to Section 404 of the CW ...


Fat Stores, Plumage Morphs, And Sex Of Migrant White-Throated Sparrows, Brendan J. Mccabe Aug 2006

Fat Stores, Plumage Morphs, And Sex Of Migrant White-Throated Sparrows, Brendan J. Mccabe

Biology Master’s Theses

Abstract - A between-season comparison of lipid stores carried by migrant White-throated

Sparrows, as determined by deuterium dilution and visible fat class.

I compared qualitative and quantitative measures of fat stores for 144 migrant White-throated

Sparrows (Zonotrichia albicolis) in fall and spring. Qualitative measures were visible fat classes and a morphometric index (100 * mass / wind chord). I calculated lipid index (fat mass/fat-free dry mass) for the quantitative measure of fat stores using the deuterium dilution technique. Spring migrants had significantly higher fat class (2.0 ± 0.1 vs. 1.0 ± 0.2), lipid index (1.06 ± 0.03 vs. 0 ...


Evaluation Of The Basis And Effectiveness Of Habitat Assessments In Wetland Functional Assessment Methods, Amy Elizabeth Gardner May 2006

Evaluation Of The Basis And Effectiveness Of Habitat Assessments In Wetland Functional Assessment Methods, Amy Elizabeth Gardner

Biology Master’s Theses

I studied the basis and effectiveness of wetland assessment methods in providing habitat assessments. While it is well understood that wetlands and riparian areas provide important ecological functions and habitat for a wide variety of wildlife species, much is still to be learned about providing meaningful, accurate and repeatable methods for assessing them. I examined and evaluated four assessment methods to determine their accuracy and usefulness in assessing a site's provision of habitat.

One hypothesis I tested is that if the assessment methods studied provide an accurate assessment of wetland functions, then the resulting site scores for the methods ...


Characterization Of Fmp35: A Novel Gene And Its Role In Mitochondrial Dna Stability, Chad A. Cornelius Jan 2006

Characterization Of Fmp35: A Novel Gene And Its Role In Mitochondrial Dna Stability, Chad A. Cornelius

Biology Master’s Theses

Mitochondria are essential organelles for all eukaryotic organisms with very few exceptions. The life-giving processes contributed by mitochondria are the end result of many proteins that are encoded within the mitochondria. Many nuclear encoded proteins give mitochondrial DNA (mtDNA) the high stability needed so that life can thrive.

Saccharomyces cerevisiae (baker's yeast) has historically been a model organism for mitochondrial function studies. These yeast are categorized as facultative anarobes; meaning that they are able to respire or ferment depending on media available. Functional mitochondria allow baker's yeast to thrive on a 3-carbon medium (p+), while mitochondrial dysfunctions due ...