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Photoacclimation by phytoplankton determines the distribution of global subsurface chlorophyll maxima in the ocean
| Title: | Photoacclimation by phytoplankton determines the distribution of global subsurface chlorophyll maxima in the ocean |
| Authors: | Masuda, Yoshio Browse this author | | Yamanaka, Yasuhiro Browse this author →KAKEN DB | | Smith, Sherwood Lan Browse this author | | Hirata, Takafumi Browse this author →KAKEN DB | | Nakano, Hideyuki Browse this author →KAKEN DB | | Oka, Akira Browse this author →KAKEN DB | | Sumata, Hiroshi Browse this author |
| Issue Date: | 18-Jun-2021 |
| Publisher: | Springer Nature |
| Journal Title: | Communications Earth & Environment |
| Volume: | 2 |
| Start Page: | 128 |
| Publisher DOI: | 10.1038/s43247-021-00201-y |
| Abstract: | Subsurface chlorophyll maxima are widely observed in the ocean, and they often occur at greater depths than maximum phytoplankton biomass. However, a consistent mechanistic explanation for their distribution in the global ocean remains lacking. One possible mechanism is photoacclimation, whereby phytoplankton adjust their cellular chlorophyll content in response to environmental conditions. Here, we incorporate optimality-based photoacclimation theory based on resource allocation trade-off between nutrient uptake and light harvesting capacity into a 3D biogeochemical ocean circulation model to determine the influence of resource allocation strategy on phytoplankton chlorophyll to carbon ratio distributions. We find that photoacclimation is a common driving mechanism that consistently explains observed global scale patterns in the depth and intensity of subsurface chlorophyll maxima across ocean regions. This mechanistic link between cellular-scale physiological responses and the global scale chlorophyll distribution can inform interpretation of ocean observations and projections of phytoplankton responses to climate change. Trade-offs in the cellular allocation of resources in response to environmental conditions consistently explain the depths of subsurface chlorophyll maxima across the global ocean, according to simulations with a biogeochemical ocean circulation model. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82422 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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