Absence of photophysiological response to iron addition in autumn phytoplankton in the Antarctic sea-ice zone

• Published in: Biogeosciences
• Main Authors: Singh, Asmita, Fietz, S, Thomalla, Sandy J, Sanchez, N, Ardelan, MV, Moreau, S, Kauko, HM, Fransson, A, Chierici, M, Ryan-Keogh, Thomas J
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2023
• Subjects: Phytoplankton photosynthesis; Photophysiological response; Southern Ocean; Antarctic; The Antarctic; Austral; Dronning Maud Land; Astrid Ridge; Antarc*; Sea ice
• Online Access: http://hdl.handle.net/10204/13155; https://doi.org/10.5194/bg-20-3073-2023

The high nutrient–low chlorophyll condition of the Southern Ocean is generally thought to be caused by the low bioavailability of micronutrients, particularly iron, which plays an integral role in phytoplankton photosynthesis. Nevertheless, the Southern Ocean experiences seasonal blooms that general...