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Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea

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Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea. / Orkney, Andrew; Platt, Trevor; Narayanaswamy, Bhavani E; Kostakis, Ina; Bouman, Heather A.

In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 378, No. 2181, 20190357, 02.10.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Orkney, A, Platt, T, Narayanaswamy, BE, Kostakis, I & Bouman, HA 2020, 'Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea', Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 378, no. 2181, 20190357. https://doi.org/10.1098/rsta.2019.0357

APA

Orkney, A., Platt, T., Narayanaswamy, B. E., Kostakis, I., & Bouman, H. A. (2020). Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378(2181), [20190357]. https://doi.org/10.1098/rsta.2019.0357

Vancouver

Orkney A, Platt T, Narayanaswamy BE, Kostakis I, Bouman HA. Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2020 Oct 2;378(2181). 20190357. https://doi.org/10.1098/rsta.2019.0357

Author

Orkney, Andrew ; Platt, Trevor ; Narayanaswamy, Bhavani E ; Kostakis, Ina ; Bouman, Heather A. / Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea. In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2020 ; Vol. 378, No. 2181.

Bibtex

@article{20f3472b269243a4bfc8cfb290783c89,
title = "Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea",
abstract = "Increasing contributions of prymnesiophytes such as Phaeocystis pouchetii and Emiliania huxleyi to Barents Sea phytoplankton production have been suggested based on in-situ observations of phytoplankton community composition, but the scattered and discontinuous nature of these records confounds simple inference of community change or its relationship to salient environmental variables. However, provided that meaningful assessments of phytoplankton community composition can be inferred based on their optical characteristics, ocean-colour records offer a potential means to develop a synthesis between sporadic insitu observations. Existing remote-sensing algorithms to retrieve phytoplankton functional types based on chlorophyll-a concentration or indices of pigmentpackaging may however fail to distinguish Phaeocystis from other blooms of phytoplankton with high pigment-packaging, such as diatoms. We develop a novel algorithm to distinguish major phytoplankton functional types in the Barents Sea and apply it to the MODIS-Aqua ocean-colour record, to study changes in the composition of Barents Sea phytoplankton blooms in July, between 2002 and 2018, creating time series of the spatial distribution and intensity of coccolithophore, diatom and Phaeocystis blooms. We confirm a north-eastward expansion in coccolithophore bloom distribution, identified in previous studies, and suggest an inferred increase in chlorophyll-a concentrations, reported by previous researchers, may be partly explained by increasing frequencies of Phaeocystis blooms.",
keywords = "Arctic, phaeocystis, phytoplankton, Climate, Ocean colour, Remote se, RCUK, NERC, NE/P006507/1",
author = "Andrew Orkney and Trevor Platt and Narayanaswamy, {Bhavani E} and Ina Kostakis and Bouman, {Heather A}",
note = "10.1098/rsta.2019.0357",
year = "2020",
month = oct,
day = "2",
doi = "10.1098/rsta.2019.0357",
language = "English",
volume = "378",
journal = "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences",
issn = "1364-503X",
publisher = "Royal Society of London",
number = "2181",

}

RIS

TY - JOUR

T1 - Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea

AU - Orkney, Andrew

AU - Platt, Trevor

AU - Narayanaswamy, Bhavani E

AU - Kostakis, Ina

AU - Bouman, Heather A

N1 - 10.1098/rsta.2019.0357

PY - 2020/10/2

Y1 - 2020/10/2

N2 - Increasing contributions of prymnesiophytes such as Phaeocystis pouchetii and Emiliania huxleyi to Barents Sea phytoplankton production have been suggested based on in-situ observations of phytoplankton community composition, but the scattered and discontinuous nature of these records confounds simple inference of community change or its relationship to salient environmental variables. However, provided that meaningful assessments of phytoplankton community composition can be inferred based on their optical characteristics, ocean-colour records offer a potential means to develop a synthesis between sporadic insitu observations. Existing remote-sensing algorithms to retrieve phytoplankton functional types based on chlorophyll-a concentration or indices of pigmentpackaging may however fail to distinguish Phaeocystis from other blooms of phytoplankton with high pigment-packaging, such as diatoms. We develop a novel algorithm to distinguish major phytoplankton functional types in the Barents Sea and apply it to the MODIS-Aqua ocean-colour record, to study changes in the composition of Barents Sea phytoplankton blooms in July, between 2002 and 2018, creating time series of the spatial distribution and intensity of coccolithophore, diatom and Phaeocystis blooms. We confirm a north-eastward expansion in coccolithophore bloom distribution, identified in previous studies, and suggest an inferred increase in chlorophyll-a concentrations, reported by previous researchers, may be partly explained by increasing frequencies of Phaeocystis blooms.

AB - Increasing contributions of prymnesiophytes such as Phaeocystis pouchetii and Emiliania huxleyi to Barents Sea phytoplankton production have been suggested based on in-situ observations of phytoplankton community composition, but the scattered and discontinuous nature of these records confounds simple inference of community change or its relationship to salient environmental variables. However, provided that meaningful assessments of phytoplankton community composition can be inferred based on their optical characteristics, ocean-colour records offer a potential means to develop a synthesis between sporadic insitu observations. Existing remote-sensing algorithms to retrieve phytoplankton functional types based on chlorophyll-a concentration or indices of pigmentpackaging may however fail to distinguish Phaeocystis from other blooms of phytoplankton with high pigment-packaging, such as diatoms. We develop a novel algorithm to distinguish major phytoplankton functional types in the Barents Sea and apply it to the MODIS-Aqua ocean-colour record, to study changes in the composition of Barents Sea phytoplankton blooms in July, between 2002 and 2018, creating time series of the spatial distribution and intensity of coccolithophore, diatom and Phaeocystis blooms. We confirm a north-eastward expansion in coccolithophore bloom distribution, identified in previous studies, and suggest an inferred increase in chlorophyll-a concentrations, reported by previous researchers, may be partly explained by increasing frequencies of Phaeocystis blooms.

KW - Arctic

KW - phaeocystis

KW - phytoplankton

KW - Climate

KW - Ocean colour

KW - Remote se

KW - RCUK

KW - NERC

KW - NE/P006507/1

U2 - 10.1098/rsta.2019.0357

DO - 10.1098/rsta.2019.0357

M3 - Article

VL - 378

JO - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

JF - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

SN - 1364-503X

IS - 2181

M1 - 20190357

ER -

ID: 22171353