A5013537746- Diatoms and Algae Research
- Water Quality and Resources Studies
- Geology and Paleoclimatology Research
- Geological formations and processes
- Aquatic Ecosystems and Phytoplankton Dynamics
- Aquatic Invertebrate Ecology and Behavior
- Soil and Water Nutrient Dynamics
- Fish Ecology and Management Studies
- Hydrology and Sediment Transport Processes
- Microbial Community Ecology and Physiology
- Freshwater macroinvertebrate diversity and ecology
- Marine and coastal ecosystems
- Geochemistry and Geologic Mapping
- Wastewater Treatment and Nitrogen Removal
- Isotope Analysis in Ecology
- Clay minerals and soil interactions
- Silicon Effects in Agriculture
- Paleontology and Stratigraphy of Fossils
- Cultural Heritage Materials Analysis
- Mineralogy and Gemology Studies
- Oil Spill Detection and Mitigation
- Hydrology and Watershed Management Studies
- Lichen and fungal ecology
- Geological Studies and Exploration
- Genomics and Phylogenetic Studies
University of Minnesota, Duluth
2017-2024
Minnesota Department of Natural Resources
2024
Pantocsekiella comensis is ubiquitous in the Laurentian Great Lakes and an important indicator of climate change low nutrients. forms a diverse complex with high morphological diversity. We distinguished three species within complex: P. comensis, delicatula, laurentiana sp. nov. by examining specimens from using light scanning electron microscopy. All have radial, uniform, alveolate striae, central fultoportula, rimoportula opposite marginal fultoportulae. However, has smaller diameter than...
The type material of Synedra acus var. ostenfeldii Willi Krieg. was investigated using light and scanning electron microscopy. species is one the few fragilarioid taxa that forms stellate colonies. Its morphology compared with Fragilaria tenera lemanensis Druart, Lavigne & M.Robert, another taxon forming star-shaped colonies, on slide in from a neighbouring lake. results show both not being conspecific based valve outline, dimensions presence spines. Based observations, transferred to genus...
Abstract Cyanobacterial Harmful Algal Blooms (cHABs) are increasingly common in marine and freshwater environments, including the Laurentian Great Lakes (LGL). Lake Superior has seen two large-scale cyanobacterial blooms (2012 2018) along Wisconsin shoreline west of Apostle Islands, caused by cyanobacterium Dolichospermum lemmermannii. The drivers bloom formation not yet certain, with many factors known to trigger elsewhere LGL being absent Superior. Furthermore, little is about D....