ArticleLimnology and oceanography2020
Photosynthetic energy conversion efficiency in the West Antarctic Peninsula.
Article in Limnology and oceanography, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 24 citations in OpenAlex.
- Turnover rates of photosynthesis determined by fluorescence kinetic analysis.Photosynthesis research · 2026Article
- Coupling of excitation energy to photochemistry in natural marine phytoplankton communities under iron stress.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Antarctic glaciers export carbon-stabilised iron(II)-rich particles to the surface Southern Ocean.Nature communications · 2025Article
- Article
- Using picosecond fluorescence lifetime analysis to determine photosynthesis in the world's oceans.Photosynthesis research · 2024Review
- Widespread use of proton-pumping rhodopsin in Antarctic phytoplankton.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Salp blooms drive strong increases in passive carbon export in the Southern Ocean.Nature communications · 2023Article
- Phycobilisome light-harvesting efficiency in natural populations of the marine cyanobacteria Synechococcus increases with depth.Communications biology · 2022Article
- Article
- Membrane lipids of symbiotic algae are diagnostic of sensitivity to thermal bleaching in corals.Proceedings of the National Academy of Sciences of the United States of America · 2004Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The West Antarctic Peninsula (WAP) is a highly productive polar ecosystem where phytoplankton dynamics are regulated by intense bottom-up control from light and iron availability. Rapid climate change along the WAP is driving shifts in the mixed layer depth and iron availability. Elucidating the relative role of each of these controls and their interactions is crucial for understanding of how primary productivity will change in coming decades. Using a combination of ultra-high-resolution variable chlorophyll fluorescence together with fluorescence lifetime analyses on the 2017 Palmer Long Term Ecological Research cruise, we mapped the temporal and spatial variability in phytoplankton photophysiology across the WAP. Highest photosynthetic energy conversion efficiencies and lowest fluorescence quantum yields were observed in iron replete coastal regions. Photosynthetic energy conversion efficiencies decreased by ~ 60% with a proportional increase in quantum yields of thermal dissipation and fluorescence on the outer continental shelf and slope. The combined analysis of variable fluorescence and lifetimes revealed that, in addition to the decrease in the fraction of inactive reaction centers, up to 20% of light harvesting chlorophyll-protein antenna complexes were energetically uncoupled from photosystem II reaction centers in iron-limited phytoplankton. These biophysical signatures strongly suggest severe iron limitation of photosynthesis in the surface waters along the continental slope of the WAP.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.