Browsing Biology by Title
Now showing items 140-159 of 597
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A Data Mining Approach for Detecting Evolutionary Divergence in Transcriptomic Data
(University of Waterloo, 2019-11-19)It has become common to produce genome sequences for organisms of scientific or popular interest. Although these genome projects provide insight into the gene and protein complements of a species including their evolutionary ... -
Deciphering the Indoleacetic Acid Biosynthesis Pathways in the Rhizobacterium Pseudomonas sp. UW4
(University of Waterloo, 2017-09-25)Healthy plants host, within and on the surfaces of their tissues, diverse endophytic and epiphytic bacteria. Often, this interaction is mutualistic, leading to adaptive benefits for both partners. We refer to these ... -
Deciphering the Toxicity Effects of 5′-Methylthioadenosine Accumulation in Arabidopsis thaliana
(University of Waterloo, 2021-09-29)Metabolic constraints imposed by extreme environmental fluctuations are an inescapable reality for sessile organisms such as plants. To survive, they finely tune their metabolic activity to adapt their growth to the ... -
Detecting the effects of biological invasion and subsequent control efforts on wetland ecological processes
(University of Waterloo, 2018-09-21)Meadow and emergent cattail wetland communities in eastern North America are being replaced by an invasive lineage of <i>Phragmites australis</i>. This invasion has consequences for wetland ecosystem functions; including ... -
Detection of Anammox Bacteria in Ammonium-Contaminated Groundwater
(University of Waterloo, 2011-09-30)Anaerobic ammonium-oxidizing (anammox) bacteria perform an important step in the global nitrogen cycle: oxidizing ammonium and reducing nitrite to form dinitrogen gas in the absence of oxygen. Anammox bacteria from the ... -
Determining food web impacts on experimental aquatic systems from the disposal of oil sands process-affected waste materials.
(University of Waterloo, 2006)Current mining operators in the Athabasca oil sands deposit of Alberta, Canada have made commitments to zero discharge of oil sands process-affected waste materials (OSPM) from the mine site and rehabilitation of mined ... -
Determining the habitat occupancy of young of year Arctic Grayling (Thymallus arcticus) in sub-Arctic tundra streams while accounting for imperfect detection
(University of Waterloo, 2016-01-22)I developed multi-state, multi season occupancy models to determine how a number of interacting ecological variables influence the occurrence of young-of-year (YOY) Arctic Grayling (Thymallus arcticus) in nine streams on ... -
Determining the relationships between forage use, climate and nutritional status of barren ground caribou, Rangifer tarandus groenlandicus, on Southampton Island, Nunavut, using stable isotopes analysis of d 13C and d 15N
(University of Waterloo, 2006)The caribou (Rangifer tarandus groenlandicus) on Southampton Island, Nunavut, Canada for the years 1998-2000 and 2004, 2005, were investigated using stable isotope analysis (SIA) of carbon (d 13C) and nitrogen (d 15N). ... -
Determining the subcellular localization of adenosine kinase and SAH hydrolase and their roles in adenosine metabolism
(University of Waterloo, 2007-01-23)Housekeeping enzymes are vital to the metabolism of all plant cells. Two such enzymes adenosine kinase (ADK) and S-adenosylhomocysteine (SAH) hydrolase share a similar function: both sustain S-adenosylmethionine-dependent ... -
Developing and characterizing a salmonid intestinal epithelial cell line for use in studies of inflammation in the fish gastrointestinal tract
(University of Waterloo, 2009-05-05)An intestinal cell line from rainbow trout, Oncorhynchus mykiss, was developed and challenged against several bioactive components. Primary cultures initiated from the distal segment produced the cell line, RTgutGC. ... -
Developing pre-industrial baselines from floodplain lake sediment cores to quantify the extent of metals pollution within the Alberta Oil Sands Region
(University of Waterloo, 2018-11-28)Oil sands mining operations began in 1967, but the onset of a monitoring program to assess water and sediment quality in the Athabasca River watershed began 30 years later. Consequently, no knowledge of pre-industrial, ... -
Development and analysis of molecular methods for functional metagenomics of the human gut microbiome
(University of Waterloo, 2016-03-21)Interest in the human microbiome has risen quickly in recent years as the microbes that live in and on our body have been implicated in a growing number of human health and disease states. This interest has been supported ... -
Development and application of paleolimnological analyses to disentangle the roles of natural processes and anthropogenic activities on contaminant deposition and hydrological conditions across a northern delta
(University of Waterloo, 2022-08-29)Freshwater ecosystems across northern Canada provide important habitat for wildlife and have long supported the traditional lifestyles of Indigenous communities. Multiple potential stressors threaten the security of water ... -
Development and Application of Periphyton-Based Biomonitoring Methods to Elucidate Aquatic Ecosystem Responses of Lakes in a Water-Rich Northern Landscape (Old Crow Flats, Yukon, Canada) to Climate Change
(University of Waterloo, 2022-12-13)Shallow freshwater lakes are abundant in Arctic and subarctic regions, where they provide important wildlife habitat and sustain the cultural heritage and traditional land use of Indigenous communities. Concern over effects ... -
Development and application of plant macrofossils for paleolimnological reconstructions in the Slave River Delta, N.W.T.
(University of Waterloo, 2007-08-29)This thesis combines detailed analyses of living plant communities with paleolimnological methods to develop the use of plant macrofossils as an effective tool to track hydroecological changes in ponds of the Slave River ... -
Development and Evaluation of a Periphytic Diatom Biomonitoring Platform of the Assessment of Cumulative Effects in Lakes of the Muskoka River Watershed, Ontario, Canada
(University of Waterloo, 2014-09-19)Anthropogenic stressors such as urban development, agricultural practices and industrial activities are a growing concern throughout the Muskoka River watershed of Ontario, Canada, because they can alter physical, chemical ... -
Development of an Assay System for the Determination of Transketolase and Transaldolase Activities in Hyperthermophilic Bacteria and Archaea
(University of Waterloo, 2012-03-01)Only a few hyperthermophilic archaea are found to have a complete nonoxidative stage of pentose phosphate pathway (NOPPP), which indicates that most archaeal hyperthermophiles are partially missing pentose metabolizing ... -
Development of an endothelial-like cell line from the brain of the American eel and its use to study the effects of selenium
(University of Waterloo, 2017-02-14)A cell line, eelB, has been developed in this thesis from the brain of the American eel, Anguilla rostrata (Lesueur), an endangered species and belonging to a group of fish that for unknown reasons appear to be in worldwide ... -
Development of Models for the Prediction of Short-term and Long-term Toxicity to Hyalella azteca from Separate Exposures to Nickel and Cadmium
(University of Waterloo, 2008-04-30)This study investigated whether principles of the Biotic Ligand Model (BLM), originally developed to predict acute metal toxicity to fish, may be applied to metal accumulation and toxicity in short-term and long-term ... -
Development of protein level cytokine assays and assessment of the impact of implanted Acoustic Telemetry Tags on the Rainbow Trout (Oncorhynchus mykiss) immune system
(University of Waterloo, 2023-04-06)Telemetry tags are a widely used technology for tracking animals that are difficult to observe in their natural environment. This technology has been increasingly used to monitor and study populations of high value salmonid ...