Nutrient limitation dampens the response of a harmful algae to a marine heatwave in an upwelling system

Fischer, Alexis D.; Houliez, Emilie; Bill, Brian D.; Kavanaugh, Maria T.; Alin, Simone R.; Collins, Andrew U.; Kudela, Raphael M.; Moore, Stephanie K.

doi:10.1002/lno.12604

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

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Nutrient limitation dampens the response of a harmful algae to a marine heatwave in an upwelling system

2024
By Fischer, Alexis D. ; Houliez, Emilie ; Bill, Brian D. ; ...
Source: Limnology and Oceanography (2024)

[PDF-2.63 MB]

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Journal Title:

Limnology and Oceanography
Personal Author:

Fischer, Alexis D. ; Houliez, Emilie ; Bill, Brian D. ; Kavanaugh, Maria T. ; Alin, Simone R. ; ... More +

Fischer, Alexis D. ; Houliez, Emilie ; Bill, Brian D. ; Kavanaugh, Maria T. ; Alin, Simone R. ; Collins, Andrew U. ; Kudela, Raphael M. ; Moore, Stephanie K. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NOS (National Ocean Service) ; OAR (Oceanic and Atmospheric Research) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies) ; NWFSC (Northwest Fisheries Science Center) ; ... More +

NMFS (National Marine Fisheries Service) ; NOS (National Ocean Service) ; OAR (Oceanic and Atmospheric Research) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies) ; NWFSC (Northwest Fisheries Science Center) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

Harmful algal blooms caused by toxin‐producing species of the diatom genus Pseudo‐nitzschia have been linked to anomalously warm ocean conditions in the Northern California Current System. This study compares summertime concentrations of Pseudo‐nitzschia spp. and the toxin they produce, domoic acid, during a marine heatwave year (2019) and a climatologically neutral year (2021). An Imaging FlowCytobot was installed on a fishery survey vessel alongside environmental sensors to continuously sample phytoplankton and oceanographic parameters. This was paired with targeted manual sample collections for nutrients, chlorophyll, and domoic acid. Accumulations of Pseudo‐nitzschia spp. were associated with upwelling zones and established hotspot regions: the Juan de Fuca Eddy, Heceta Bank, and Trinidad Head. Overall, however, Pseudo‐nitzschia spp. and domoic acid concentrations were low during both summers and appear to have been limited by nitrate. Nutrient availability may therefore modulate the response of Pseudo‐nitzschia spp. to warm anomalies. Comparison of these results with 2015, another marine heatwave year but one that produced record concentrations of Pseudo‐nitzschia spp. and domoic acid, suggests that the timing of marine heatwave conditions in the nearshore relative to seasonal upwelling plays a key role in determining whether a Pseudo‐nitzschia spp. harmful algal bloom will occur.
Source:

Limnology and Oceanography (2024)
DOI:

https://doi.org/10.1002/lno.12604
ISSN:

0024-3590;1939-5590;
Format:

pdf
Publisher:

Wiley
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4320271 ; Grant no. NA21NOS0120090 ; Grant no. NA20OAR4320271

Grant no. NA20OAR4320271 ; Grant no. NA21NOS0120090 ; Grant no. NA20OAR4320271 Less -
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
Rights Information:

CC BY-NC-ND
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urn:sha-512:2c689932c689f8f1f8145208a8e6f6e9b10ecd62037ba0b61fd1723ee2917d1f17a75feff491bff43f5db5929d0e2a4395d2901f1da7b88082b794e2b10a49c4
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https://repository.library.noaa.gov/view/noaa/67882/noaa_67882_DS1.pdf
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Nutrient limitation dampens the response of a harmful algae to a marine heatwave in an upwelling system

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