Articles | Volume 21, issue 5
https://doi.org/10.5194/bg-21-1235-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-1235-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 Mar 2024
Research article |
| 13 Mar 2024
| 13 Mar 2024
Unusual Hemiaulus bloom influences ocean productivity in Northeastern US Shelf waters
S. Alejandra Castillo Cieza
Chemistry Department, Wellesley College, Wellesley, MA 02481, USA
Rachel H. R. Stanley
CORRESPONDING AUTHOR
Chemistry Department, Wellesley College, Wellesley, MA 02481, USA
Pierre Marrec
Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
Diana N. Fontaine
Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
E. Taylor Crockford
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Dennis J. McGillicuddy Jr.
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Arshia Mehta
Chemistry Department, Wellesley College, Wellesley, MA 02481, USA
Susanne Menden-Deuer
Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
Emily E. Peacock
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Tatiana A. Rynearson
Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
Zoe O. Sandwith
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
now at: Hakai Institute, Pruth Harbour, Calvert Island, BC, Canada
Weifeng Zhang
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Heidi M. Sosik
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
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Cited
9 citations as recorded by crossref.
- Localized and episodic enhancement of net community production and phytoplankton carbon in spring and summer at the Northeastern US shelf‐break front R. Stanley et al. https://doi.org/10.1002/lno.70247
- First evidence of the diatom Hemiaulus and cyanobacterium Richelia endosymbiosis in the Sea of Marmara N. Balkis-Ozdelice et al. https://doi.org/10.1017/S0025315425100295
- Changes in phytoplankton size–structure alter trophic transfer in a temperate, coastal planktonic food web P. Marrec & S. Menden‐Deuer https://doi.org/10.1002/lol2.10410
- Vertical nitrate flux fuels new production over summertime Northeast U.S. Shelf B. Zheng et al. https://doi.org/10.1002/lno.12765
- The Black Sea autumn bloom of the diatom Hemiaulus hauckii Grunow ex Van Heurck: peculiarities of the phytoplankton’s structural and functional parameters L. Stelmakh et al. https://doi.org/10.1071/MF25109
- Intra-annual Microphytoplankton and Environmental Responses To Monsoonal Forcing in Two Bays of the Southern Philippines K. Uba et al. https://doi.org/10.1007/s41208-025-00932-1
- Time series of phytoplankton net primary production reveals intense interannual variability and size‐dependent chlorophyll‐specific productivity on a continental shelf D. Fontaine et al. https://doi.org/10.1002/lno.12749
- Seasonal variability of the microzooplankton biomass and community composition on the Northeast US Shelf F. Lopez et al. https://doi.org/10.1093/plankt/fbag018
- Hands-On Post-Calibration of In Vivo Fluorescence Using Open Access Data: A Guided Journey from Fluorescence to Phytoplankton Biomass P. Marrec et al. https://doi.org/10.5670/oceanog.2025.314
9 citations as recorded by crossref.
- Localized and episodic enhancement of net community production and phytoplankton carbon in spring and summer at the Northeastern US shelf‐break front R. Stanley et al. https://doi.org/10.1002/lno.70247
- First evidence of the diatom Hemiaulus and cyanobacterium Richelia endosymbiosis in the Sea of Marmara N. Balkis-Ozdelice et al. https://doi.org/10.1017/S0025315425100295
- Changes in phytoplankton size–structure alter trophic transfer in a temperate, coastal planktonic food web P. Marrec & S. Menden‐Deuer https://doi.org/10.1002/lol2.10410
- Vertical nitrate flux fuels new production over summertime Northeast U.S. Shelf B. Zheng et al. https://doi.org/10.1002/lno.12765
- The Black Sea autumn bloom of the diatom Hemiaulus hauckii Grunow ex Van Heurck: peculiarities of the phytoplankton’s structural and functional parameters L. Stelmakh et al. https://doi.org/10.1071/MF25109
- Intra-annual Microphytoplankton and Environmental Responses To Monsoonal Forcing in Two Bays of the Southern Philippines K. Uba et al. https://doi.org/10.1007/s41208-025-00932-1
- Time series of phytoplankton net primary production reveals intense interannual variability and size‐dependent chlorophyll‐specific productivity on a continental shelf D. Fontaine et al. https://doi.org/10.1002/lno.12749
- Seasonal variability of the microzooplankton biomass and community composition on the Northeast US Shelf F. Lopez et al. https://doi.org/10.1093/plankt/fbag018
- Hands-On Post-Calibration of In Vivo Fluorescence Using Open Access Data: A Guided Journey from Fluorescence to Phytoplankton Biomass P. Marrec et al. https://doi.org/10.5670/oceanog.2025.314
Saved (final revised paper)
Latest update: 19 Jul 2026
Short summary
The coastal ocean in the northeastern USA provides many services, including fisheries and habitats for threatened species. In summer 2019, a bloom occurred of a large unusual phytoplankton, the diatom Hemiaulus, with nitrogen-fixing symbionts. This led to vast changes in productivity and grazing rates in the ecosystem. This work shows that the emergence of one species can have profound effects on ecosystem function. Such changes may become more prevalent as the ocean warms due to climate change.
The coastal ocean in the northeastern USA provides many services, including fisheries and...
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