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Articles 1 - 5 of 5
Full-Text Articles in Other Life Sciences
Distributions And Abundances Of The Red Tide Dinoflagellate Alexandrium Catenella In The Eastern Gulf Of Maine And Bay Of Fundy In Relation To Diatoms In June, July And August Of 2019, Kimberly Lina D'Adamo
Distributions And Abundances Of The Red Tide Dinoflagellate Alexandrium Catenella In The Eastern Gulf Of Maine And Bay Of Fundy In Relation To Diatoms In June, July And August Of 2019, Kimberly Lina D'Adamo
Electronic Theses and Dissertations
A series of three oceanographic survey cruises were conducted in June, July, and August of 2019 in the northeastern Gulf of Maine and Bay of Fundy. Surface water samples were collected and analyzed for enumerations of cell densities of the dinoflagellate Alexandrium catenella in relation to cell densities of diatoms. Hydrographic profiles of temperature, salinity, and nutrients (silicate and nitrate) were also made at each station. Data were analyzed to determine if there was any statistically significant evidence of allelopathic interference imparted by diatoms that impede A. catenella. A. catenella cells were most abundant in June, reaching 6,195 cells per …
Climatic Range Filling Of North American Trees, Benjamin Seliger
Climatic Range Filling Of North American Trees, Benjamin Seliger
Electronic Theses and Dissertations
Understanding the degree to which species distributions are controlled by climate is crucial for forecasting biodiversity responses to climate change. Climatic equilibrium, when species are found in all places which are climatically suitable, is a fundamental assumption of species distribution models, but there is evidence in support of climate disequilibria in species ranges. Long-lived, sessile organisms such as trees may be especially vulnerable to being outpaced by climate change, and thus prone to disequilibrium. In this dissertation, I tested the degree to which North American trees are in equilibrium with their potential climatic ranges using the ‘range filling’ metric, which …
Development Of A Bacteriophage-Based Portable Biosensor For The Detection Of Shiga-Toxin Producing Escherichia Coli (Stec) Strains In Food And Environmental Matrices, Irwin A. Quintela
Development Of A Bacteriophage-Based Portable Biosensor For The Detection Of Shiga-Toxin Producing Escherichia Coli (Stec) Strains In Food And Environmental Matrices, Irwin A. Quintela
Electronic Theses and Dissertations
A fast and reliable on-site foodborne pathogens screening can reduce the incidence of foodborne illnesses, hospitalizations and economic loss. It can also circumvent conventional laboratory-based tests with minimal sample treatments and shorter turnaround time. Rapid detection of biological hazards has been largely dependent on immunological agents (ie antibodies). Antibodies are expensive to manufacture and experience cross-reactivity, instability with shorter shelf life. Our aim was to improve the screening process of Shiga-toxin producing Escherichia coli (STEC) strains in food and environmental matrices by developing a novel, inexpensive handheld bacteriophage-based amperometric biosensor that can directly detect live STEC cells.This biosensor development began …
Detrital Protein Contributes To Oyster Nutrition And Growth In The Damariscotta Estuary, Maine, Usa, Cheyenne M. Adams
Detrital Protein Contributes To Oyster Nutrition And Growth In The Damariscotta Estuary, Maine, Usa, Cheyenne M. Adams
Electronic Theses and Dissertations
Oyster aquaculture is an expanding industry that relies on identifying and utilizing natural estuarine conditions for the economically viable production of a filter-feeding crop. The eastern oyster, Crassostrea virginica, is the principal species currently cultured in Maine. In addition to preferentially consumed phytoplankton, various detrital complexes (non-algal and/or non-living organic matter) may provide some nutrition to C. virginica between times of phytoplankton abundance. Here I investigated the importance of detrital proteins in supporting the growth of oysters cultured in the upper Damariscotta Estuary. Oyster aquaculture in this area is highly successful and previous reports indicate that labile detrital protein …
American Woodcock Migration Ecology At An Important Stopover, Cape May, New Jersey, Brian B. Allen
American Woodcock Migration Ecology At An Important Stopover, Cape May, New Jersey, Brian B. Allen
Electronic Theses and Dissertations
Migration poses risks and energetic demands to individuals that may be greater than those experienced during non-migratory periods. Most migratory birds require stopover sites to rest and recuperate energy spent during migratory flights, and stopover locations can alleviate risks and provide supplemental energy en route to the animal’s end destination. An individual’s stopover duration is contingent first on energy acquisition that is constrained by resource availability, and secondarily on environmental conditions such as weather that may facilitate or constrain continued migration. From 2010 to 2013 I conducted a radio-telemetry study of a short-distance migrant, the American Woodcock (Scolopax minor), on …