Upper thermal limits and acclimation potential of Arctic cod (Boreogadus saida) : a key food web species in the Arctic Ocean ...
The recent rapid and unprecedented changes to the physical and biogeochemical properties of the Arctic Ocean have gained worldwide attention. The greater than 50% reduction in sea ice volume below average is of great concern. My thesis investigates the potential effects of a warmer Arctic Ocean upon...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2017
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| Online Access: | https://dx.doi.org/10.14288/1.0343462 https://doi.library.ubc.ca/10.14288/1.0343462 |
| Summary: | The recent rapid and unprecedented changes to the physical and biogeochemical properties of the Arctic Ocean have gained worldwide attention. The greater than 50% reduction in sea ice volume below average is of great concern. My thesis investigates the potential effects of a warmer Arctic Ocean upon the indigenous Arctic cod, Boreogadus saida. This fish make up a significant proportion of the lower trophic energy reserve available in Arctic marine systems. Predators rely upon Arctic cod to provide them bite sized access to those critical energy reserves. Yet despite their key role in the Arctic food web, their upper thermal limits are not well studied. Thus, my three objectives were: a) quantify, for the first time in this species, their upper thermal limits b) determine the acclimation potential of the species at three acclimation temperatures and c) contrast the results generated by different methods that quantify thermal limits for declining physiological performance (rate transition temperatures) that I ... |
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