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Oceanography and Atmospheric Sciences and Meteorology
Antarctic · Global warming · Fe input · Phytoplankton community · Diatom · Phaeocystis · Pseudo-nitzschia
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Full-Text Articles in Physical Sciences and Mathematics
A Comparative Study Of Iron And Temperature Interactive Effects On Diatoms And Phaeocystis Antarctica From The Ross Sea, Antarctica, Zhi Zhu, Kai Xu, Feixue Fu, Jenna L. Spackeen, Deborah A. Bronk, David A. Hutchins
A Comparative Study Of Iron And Temperature Interactive Effects On Diatoms And Phaeocystis Antarctica From The Ross Sea, Antarctica, Zhi Zhu, Kai Xu, Feixue Fu, Jenna L. Spackeen, Deborah A. Bronk, David A. Hutchins
VIMS Articles
In the future, temperature and iron availability are predicted to change in the coastal polynyas of Antarctica, which are the most biologically productive regions of the Southern Ocean. We examined the individual and combined effects of iron addition (+500 nM) and temperature increase (4°C) on Phaeocystis antarctica and several dominant diatom species isolated from the McMurdo Sound sector of the Ross Sea. Iron addition increased growth, carbon fixation, iron uptake rates, cellular carbon quota, and cell size of almost all tested species, while temperature increase only affected certain species. Concurrent increases in temperature and iron synergistically stimulated the growth rates …