Physical gradient influences on sea ice algae in the Canadian Arctic
| dc.contributor.author | Dalman, Laura | |
| dc.contributor.examiningcommittee | Bill Williams (DFO, Institute of Ocean Sciences) | en_US |
| dc.contributor.examiningcommittee | Zou Zou Kuzyk (Environment and Geography) | en_US |
| dc.contributor.supervisor | Mundy, CJ (Environment and Geography) Barber, David (Environment and Geography) | en_US |
| dc.date.accessioned | 2019-01-08T15:07:55Z | |
| dc.date.available | 2019-01-08T15:07:55Z | |
| dc.date.issued | 2018 | en_US |
| dc.date.submitted | 2019-01-03T15:33:26Z | en |
| dc.degree.discipline | Environment and Geography | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Ice algae living within the bottom interstices of sea ice significantly contribute to the amount of the primary production in the Arctic Ocean in the late-winter/spring. This thesis examines the influence of physical gradients, namely sub-ice currents and riverine input, on ice algal concentration and composition during the spring bloom. Through two separate case studies, it was found that (i) increased sub-ice currents in tidal straits enhance nutrient supply to bottom ice, supporting greater ice algal biomass, (ii) improved mechanisms of nutrient supply were proposed that explain the increased biomass as a result of strong sub-ice currents, and (iii) freshwater inflow to the marine system also has a negative influence on biomass, reducing biomass associated with decreasing salinity. These findings will help identify new biological hotpots of ice algal production in the Arctic, while highlighting a negative, yet limited, influence surrounding hydroelectric controlled river output during winter. | en_US |
| dc.description.note | February 2019 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/33641 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | Arctic | en_US |
| dc.subject | Ice algae | en_US |
| dc.subject | Spring bloom | en_US |
| dc.subject | Tidal strait | en_US |
| dc.subject | Riverine input | en_US |
| dc.title | Physical gradient influences on sea ice algae in the Canadian Arctic | en_US |
| dc.type | master thesis | en_US |