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Phytoplankton Community Structure in 2011–2013 Compared to the Extratropical Warming Event of 2014–2015
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2018
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Source: Geophysical Research Letters, 45(3), 1534-1540
[PDF-662.88 KB]
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Journal Title:Geophysical Research Letters
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Description:Coastal waters of the Northern California Current experienced “normal” ocean conditions in 2011–2012, weak upwelling in 2013–2014, then suddenly warmed in September 2014. The response of phytoplankton community structure to contrasting ocean conditions was determined from samples collected off Newport, Oregon. Cluster analysis identified three prominent phytoplankton community types: one that occurred during the upwelling season characterized by the highest abundance and diversity of diatoms, a preupwelling/relaxation community characterized by lower abundance, lowest diversity of diatoms and dinoflagellates, and another one associated with the warm anomalies from September 2014 through 2015 with reduced diatom abundance and diversity but the highest dinoflagellate diversity. The changes of diatom and dinoflagellate community were correlated with local factors (silicate, silicate: nitrate ratios, temperature, and salinity), and with the Pacific Decadal Oscillation.
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Source:Geophysical Research Letters, 45(3), 1534-1540
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DOI:
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ISSN:0094-8276;1944-8007;
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Rights Information:Other
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