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Carbon and nitrogen uptake rates and macromolecular compositions of bottom-ice algae and phytoplankton at Cambridge Bay in Dease Strait, Canada

Cited 1 time in wos
Cited 2 time in scopus
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Title
Carbon and nitrogen uptake rates and macromolecular compositions of bottom-ice algae and phytoplankton at Cambridge Bay in Dease Strait, Canada
Other Titles
캐나다 캠브리지 베이의 해빙 조류와 식물플랑크톤의 거대 분자 조성 및 탄소 질소 흡수력
Authors
Kim, Kwanwoo
Ha, Sun-Yong
Kim, Bo Kyung
Mundy, C. J.
Gough, Kathleen M.
Pogorzelec, Nicole M.
Lee, Sang Heon
Subject
Physical Geography; Geology
Keywords
Biochemical compositions; Bottom-ice algae; Cambridge Bay; Phytoplankton
Issue Date
2020-09
Citation
Kim, Kwanwoo, et al. 2020. "Carbon and nitrogen uptake rates and macromolecular compositions of bottom-ice algae and phytoplankton at Cambridge Bay in Dease Strait, Canada". ANNALS OF GLACIOLOGY, 61(82): 106-116.
Abstract
Our understanding of ice algal responses to the recent changes in Arctic sea ice is impeded by limited field observations. In the present study, environmental characteristics of the landfast sea-ice zone as well as primary production and macromolecular composition of ice algae and phytoplankton were studied in the Kitikmeot Sea near Cambridge Bay in spring 2017. Averaged total chlorophyll-a (Chl-a) concentration was within the lower range reported previously for the same region, while daily carbon uptake rates of bottom-ice algae were significantly lower in this study than previously reported for the Arctic. Based on various indicators, the region's low nutrient concentrations appear to limit carbon uptake rates and associated accumulation of bottom-ice algal biomass. Furthermore, the lipids-dominant biochemical composition of bottom-ice algae suggests strong nutrient limitation relative to the distinctly different carbohydrates-dominant composition of phytoplankton. Together, the results confirm strong nitrate limitation of the local marine system.
URI
https://repository.kopri.re.kr/handle/201206/12050
DOI
http://dx.doi.org/10.1017/aog.2020.17
Appears in Collections  
2019-2019, Carbon assimilation rate of sea ice ecosystem in the Kongsfjorden MIZ, Arctic (19-19) / Ha, Sun-Yong (PE19170)
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