Community dynamics of bottom-ice algae in Dease Strait of the Canadian Arctic

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• 作者：K. Campbell^a ; ^{umcampb2@myumanitoba.ca} ; C.J. Mundy^a ; J.C. Landy^a ; A. Delaforge^a ; C. Michel^a ; ^b ; S. Rysgaard^a ; ^c ; ^d
• 关键词：Photoadaptation ; Sea ice ; Algology ; Arctic zone ; Oxygen ; Nutrients
• 刊名：Progress in Oceanography
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：149
• 期：Complete
• 页码：27-39
• 全文大小：1572 K
• 卷排序：149

文摘

Photosynthesis-irradiance (PI) parameters of ice algae measured using oxygen optodes in this study were not significantly different between thin (<10 cm) and thick (15–25 cm) snow covers. Light drives seasonal increases in maximum photosynthetic rate (in the absence of photoinhibition), the photoacclimation parameter and POC:chl a composition. Significant nutrient limitation in the study area of Dease Strait, Nunavut, limited algal production and caused high POC:PON ratios. Algal biomass and photophysiology were limited by both light and nutrients over a diel period.