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Temporal and Light-Dependent Variability of Algal Communities In Land-Fast Arctic Sea Ice


Abstract Sea ice algae dominated by diatoms inhabit the brine channels of the Arctic sea ice and serve as the base of the Arctic marine food web in the spring. I studied sea ice diatoms in the bottom 10 cm of first year land-fast sea ice off the coast of Barrow, AK, in spring of 2011, 2012, and 2013. I investigated the variability in the biomass and the community composition of these sea-ice diatoms between bloom phases, as a function of overlying snow depth and over time. The dominant genera were the pennate diatoms Nitzschia, Navicula, Thalassiothrix, and Fragilariopsis with only a minor contribution by centric diatoms. While diatom biomass as estimated by organic carbon changed significantly between early, peak, and declining bloom phases (averag... (more)
Created Date 2014
Contributor Kinzler, Kyle Philip (Author) / Neuer, Susanne (Advisor) / Juhl, Andrew (Committee member) / Hartnett, Hilairy (Committee member) / Arizona State University (Publisher)
Subject Biological oceanography / Arctic / Bacillariophyceae / Community Development / Ice Algae / Snow Cover / Spring Bloom
Type Masters Thesis
Extent 62 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Masters Thesis Biology 2014
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis