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Full-Text Articles in Life Sciences
Validation Of A Water Quality Index For Lake Erie, Vaclava Hazukova
Validation Of A Water Quality Index For Lake Erie, Vaclava Hazukova
Masters Theses
This study validates a water quality index based on a diatom total phosphorus transfer function for monitoring of the Lake Erie’s pelagic zone. Lake Erie is again under the threat of cultural eutrophication, mostly due to the runoff of nutrients from the surrounding farmlands. Therefore, it is an issue of high importance to continue monitoring efforts in Lake Erie to assess further deterioration or progressive changes due to the restoration management practices. Diatom-biomonitoring represents one of the efficient and well-crafted tools to assess the actual conditions. However, indices of water quality based on diatom transfer functions are often used without …
Nutrient Conservation Trait Responses Of Low Resource Adapted Chaparral Shrubs To Increased Resource Availability, Reina Lee Nielsen
Nutrient Conservation Trait Responses Of Low Resource Adapted Chaparral Shrubs To Increased Resource Availability, Reina Lee Nielsen
Masters Theses
Traits that increase mean nutrient retention times are essential to plant performance in low resource environments, where multiple stressors (low water and nutrients) are present. Although physiological responses to either water or nutrient stress are well understood, fewer studies have investigated the interaction of these stressors from a phylogenetically-controlled, whole-plant perspective. This research focused on three, phylogenetically-controlled pairs of shrubby evergreen species from the California chaparral that either grow on or off serpentine soils, which differ in nutrient availability. Using greenhouse and field studies, the responses of these plants to altered water and nutrient availability were evaluated. The greenhouse study …
Chemotaxis Of Batrachochytrium Dendrobatidis Zoospores In Response To Live Amphibians, David Bartholow
Chemotaxis Of Batrachochytrium Dendrobatidis Zoospores In Response To Live Amphibians, David Bartholow
Masters Theses
Batrachochytrium dendrobatidis (Bd) is one of the primary drivers of amphibian decline, and has spread rapidly on a global scale, but the mechanisms of Bd movement on small spatial scales are poorly understood and may play a role in transmission and infection. The flagellated zoospores of this fungus exhibit chemotaxis in response to single chemical cues, towards potential nutrient sources and away from metabolites of anti-fungal bacteria (AFB) present on amphibian skin. Levels of cutaneous AFB were manipulated on Eurycea bislineata hosts (either by bathing in a culture of the AFB Janthinobacterium lividum, or bathing in antibiotics) …
Evaluation Of The Phylogenetic Relationships Of The Marine Rivulariaceae., Jose Alberto Martinez Yerena
Evaluation Of The Phylogenetic Relationships Of The Marine Rivulariaceae., Jose Alberto Martinez Yerena
Masters Theses
Historically, the Rivulariaceae family has grouped all heteropolar, tapered and heterocitous Cyanobacteria, however recent description of multiple cyanobacterial populations with this morphotype using 16S rRNA phylogenies have reported that the populations with this morphotype are polyphyletic, and many new and old tapered and heteropolar genera (Cyanomargarita, Gloeothrichia, Rohoaltiella, etc.) have been classified and reclassified to different families than the Rivulariaceae. This is also the case of the main genera of the family (Rivularia and Calothrix), which have been repeatedly reported as polyphyletic, and whose separation to different families has been called for. In this project I carried out the evaluation …
The Effects Of Temperature On Batrachochytrium Dendrobatidis Resistance And Heart Rate In The Polymorphic Eastern Red-Backed Salamanders, Plethodon Cinereus, Joseph Alan Demarchi
The Effects Of Temperature On Batrachochytrium Dendrobatidis Resistance And Heart Rate In The Polymorphic Eastern Red-Backed Salamanders, Plethodon Cinereus, Joseph Alan Demarchi
Masters Theses
No abstract provided.