Transient shifts in Bering Sea shelf phytoplankton size structure in response to wind‐induced mixing

Nielsen, Jens M.; Lomas, Michael W.; Eisner, Lisa B.; Pelland, Noel A.; Hospital, Sun B.; Lange, Priscila K.; Mordy, Calvin W.; Gann, Jeanette C.; Stabeno, Phyllis J.; Tabisola, Heather M.; Sullivan, Margaret E.

doi:10.1002/lol2.70084

i

Transient shifts in Bering Sea shelf phytoplankton size structure in response to wind‐induced mixing

2025
By Nielsen, Jens M. ; Lomas, Michael W. ; Eisner, Lisa B. ; ...
Series: PMEL contribution no. 5565

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Journal Title:

Limnology and Oceanography Letters
Personal Author:

Nielsen, Jens M. ; Lomas, Michael W. ; Eisner, Lisa B. ; Pelland, Noel A. ; Hospital, Sun B. ; Lange, Priscila K. ; Mordy, Calvin W. ; Gann, Jeanette C. ; Stabeno, Phyllis J. ; Tabisola, Heather M. ; Sullivan, Margaret E.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; OAR (Oceanic and Atmospheric Research) ; AFSC (Alaska Fisheries Science Center) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies) ; PMEL (Pacific Marine Environmental Laboratory) ; SWFSC (Southwest Fisheries Science Center)
Description:

Phytoplankton community size structure is a key attribute that influences pelagic trophic energy transfer and the vertical flux of organic matter to benthic food webs. To capture the ephemeral scale of phytoplankton population size spectra we developed an approach, combining long-term survey datasets, machine learning modeling and 3 yr of high-resolution moored vertical profiler measurements. We show that larger phytoplankton (> 10 μm cell diameter) dominated the spring bloom throughout the water column, however, after the bloom, smaller cells (< 10 μm cell diameter) comprise 70–80% of the phytoplankton community in the surface mixed layer. In contrast, larger cells are predominantly present at depths near the mixed layer interface. However, intermittent wind mixing events results in enhanced pulses of net community production and larger phytoplankton in the upper ocean. Our findings highlight how transient seasonal and vertical shifts in phytoplankton size structure occur in response to variable oceanographic conditions.
Source:

Limnology and Oceanography Letters, 11(1)
Series:

PMEL contribution no. 5565
DOI:

https://doi.org/10.1002/lol2.70084
ISSN:

2378-2242 ; 2378-2242
Format:

pdf
Publisher:

Wiley
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4320271
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:79676aaa80cf5c8231ad4718c490fffa086f10a780bf3dab23b7ee061888668b7030cac1e89fca11d3b501c708eaba37acbfd2b74b9c37b3402463a99873e799
Download URL:

https://repository.library.noaa.gov/view/noaa/72356/noaa_72356_DS1.pdf
File Type:

[PDF - 8.34 MB ]

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