The relationship between the algal toxin microcystin and the chemical, physical and biological parameters in Lake Winnipeg
| dc.contributor.author | Stratton, Desiree A. L. | |
| dc.contributor.examiningcommittee | Page, Elaine (Environment and Climate Change Canada) | en_US |
| dc.contributor.examiningcommittee | Mundy, C. J. (Environment and Geography) | en_US |
| dc.contributor.examiningcommittee | Gillis, Darren (Biological Sciences) | en_US |
| dc.contributor.supervisor | Goldsborough, Gordon | |
| dc.date.accessioned | 2023-01-15T23:45:10Z | |
| dc.date.available | 2023-01-15T23:45:10Z | |
| dc.date.copyright | 2023-01-04 | |
| dc.date.issued | 2023-01-04 | |
| dc.date.submitted | 2023-01-04T20:11:09Z | en_US |
| dc.degree.discipline | Biological Sciences | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Cyanobacterial algae blooms are of rising concern all over the world because of their increasing abundance and toxin release. Using an 18-year dataset (1999 to 2017), correlations between chemical, physical and biological parameters and the microcystin toxin in Lake Winnipeg were investigated. Multi-panel scatterplots with Pearson correlation coefficients found total boron in euphotic dataset and Anabaena biomass in the surface dataset had the strongest positive correlations. N variables such as total N, total Kjeldahl N, nitrate + nitrite and the N:P ratio may aid in controlling microcystin levels in Lake Winnipeg. Higher toxins correlated with higher N variables in the surface dataset (total N and total Kjaldahl N) and euphotic dataset (N:P ratio) and higher toxins and lower N variables correlated in the euphotic dataset (dissolved NO3 + NO2). Total suspended solids had a positive correlation with toxin levels in the surface dataset; Secchi disk depth and wind speed had negative correlations. Overall, I found that algal toxin concentrations in the epilimnion of Lake Winnipeg correlated best with several metrics of nitrogen availability, water clarity, Anabaena biomass and boron concentrations . | en_US |
| dc.description.note | February 2023 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/37120 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | Cyanobacteria | en_US |
| dc.title | The relationship between the algal toxin microcystin and the chemical, physical and biological parameters in Lake Winnipeg | en_US |
| dc.type | master thesis | en_US |
| local.subject.manitoba | yes | en_US |