Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements
WOS:000548189100001 International audience Changes in airborne high spectral resolution lidar (HSRL) measurements of scattering, depolarization, and attenuation coincided with a shift in phytoplankton community composition across an anticyclonic eddy in the North Atlantic. We normalized the total de...
Published in: | Frontiers in Marine Science |
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Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
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Subjects: | |
Online Access: | https://doi.org/10.3389/fmars.2020.00493 https://hal.archives-ouvertes.fr/hal-03015211/file/Schulien_etal_FiMS_2020.pdf https://hal.archives-ouvertes.fr/hal-03015211 |
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fttriple:oai:gotriple.eu:10670/1.1puxct |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
ACL carbon impact north-atlantic mesoscale eddies satellite-observations backscatter depolarization hsrl light backscattering mueller matrix ocean color phytoplankton community composition reflectance toxic dinoflagellate envir geo |
spellingShingle |
ACL carbon impact north-atlantic mesoscale eddies satellite-observations backscatter depolarization hsrl light backscattering mueller matrix ocean color phytoplankton community composition reflectance toxic dinoflagellate envir geo Schulien, Jennifer A. Della Penna, Alice Gaube, Peter Chase, Alison P. Haentjens, Nils Graff, Jason R. Hair, Johnathan W. Hostetler, Chris A. Scarino, Amy Jo Boss, Emmanuel S. Karp-Boss, Lee Behrenfeld, Michael J. Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements |
topic_facet |
ACL carbon impact north-atlantic mesoscale eddies satellite-observations backscatter depolarization hsrl light backscattering mueller matrix ocean color phytoplankton community composition reflectance toxic dinoflagellate envir geo |
description |
WOS:000548189100001 International audience Changes in airborne high spectral resolution lidar (HSRL) measurements of scattering, depolarization, and attenuation coincided with a shift in phytoplankton community composition across an anticyclonic eddy in the North Atlantic. We normalized the total depolarization ratio (delta) by the particulate backscattering coefficient (b(b)(p)) to account for the covariance in delta and b(b)(p) that has been attributed to multiple scattering. A 15% increase in delta/b(b)(p) inside the eddy coincided with decreased phytoplankton biomass and a shift to smaller and more elongated phytoplankton cells. Taxonomic changes (reduced dinoflagellate relative abundance inside the eddy) were also observed. The delta signal is thus potentially most sensitive to changes in phytoplankton shape because neither the observed change in the particle size distribution (PSD) nor refractive index (assuming average refractive indices) are consistent with previous theoretical modeling results. We additionally calculated chlorophyll-a (Chl) concentrations from measurements of the diffuse light attenuation coefficient (K-d) and divided by b(b)(p) to evaluate another optical metric of phytoplankton community composition (Chl:b(bp)), which decreased by more than a factor of two inside the eddy. This case study demonstrates that the HSRL is able to detect changes in phytoplankton community composition. High spectral resolution lidar measurements reveal complex structures in both the vertical and horizontal distribution of phytoplankton in the mixed layer providing a valuable new tool to support other remote sensing techniques for studying mixed layer dynamics. Our results identify fronts at the periphery of mesoscale eddies as locations of abrupt changes in near-surface optical properties. |
author2 |
US Geological Survey Santa Cruz United States Geological Survey Reston (USGS) Applied Physics Laboratory Seattle (APL-UW) University of Washington Seattle Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) University of Maine Department of Botany and Plant Pathology Oregon State University (OSU) NASA Langley Research Center Hampton (LaRC) |
format |
Article in Journal/Newspaper |
author |
Schulien, Jennifer A. Della Penna, Alice Gaube, Peter Chase, Alison P. Haentjens, Nils Graff, Jason R. Hair, Johnathan W. Hostetler, Chris A. Scarino, Amy Jo Boss, Emmanuel S. Karp-Boss, Lee Behrenfeld, Michael J. |
author_facet |
Schulien, Jennifer A. Della Penna, Alice Gaube, Peter Chase, Alison P. Haentjens, Nils Graff, Jason R. Hair, Johnathan W. Hostetler, Chris A. Scarino, Amy Jo Boss, Emmanuel S. Karp-Boss, Lee Behrenfeld, Michael J. |
author_sort |
Schulien, Jennifer A. |
title |
Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements |
title_short |
Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements |
title_full |
Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements |
title_fullStr |
Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements |
title_full_unstemmed |
Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements |
title_sort |
shifts in phytoplankton community structure across an anticyclonic eddy revealed from high spectral resolution lidar scattering measurements |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.00493 https://hal.archives-ouvertes.fr/hal-03015211/file/Schulien_etal_FiMS_2020.pdf https://hal.archives-ouvertes.fr/hal-03015211 |
long_lat |
ENVELOPE(55.533,55.533,-66.917,-66.917) |
geographic |
Mueller |
geographic_facet |
Mueller |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 2296-7745 Frontiers in Marine Science Frontiers in Marine Science, Frontiers Media, 2020, 7, pp.493. ⟨10.3389/fmars.2020.00493⟩ |
op_relation |
hal-03015211 doi:10.3389/fmars.2020.00493 10670/1.1puxct https://hal.archives-ouvertes.fr/hal-03015211/file/Schulien_etal_FiMS_2020.pdf https://hal.archives-ouvertes.fr/hal-03015211 |
op_rights |
other |
op_doi |
https://doi.org/10.3389/fmars.2020.00493 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
_version_ |
1766129218827059200 |
spelling |
fttriple:oai:gotriple.eu:10670/1.1puxct 2023-05-15T17:31:34+02:00 Shifts in Phytoplankton Community Structure Across an Anticyclonic Eddy Revealed From High Spectral Resolution Lidar Scattering Measurements Schulien, Jennifer A. Della Penna, Alice Gaube, Peter Chase, Alison P. Haentjens, Nils Graff, Jason R. Hair, Johnathan W. Hostetler, Chris A. Scarino, Amy Jo Boss, Emmanuel S. Karp-Boss, Lee Behrenfeld, Michael J. US Geological Survey Santa Cruz United States Geological Survey Reston (USGS) Applied Physics Laboratory Seattle (APL-UW) University of Washington Seattle Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) University of Maine Department of Botany and Plant Pathology Oregon State University (OSU) NASA Langley Research Center Hampton (LaRC) 2020-06-30 https://doi.org/10.3389/fmars.2020.00493 https://hal.archives-ouvertes.fr/hal-03015211/file/Schulien_etal_FiMS_2020.pdf https://hal.archives-ouvertes.fr/hal-03015211 en eng HAL CCSD Frontiers Media hal-03015211 doi:10.3389/fmars.2020.00493 10670/1.1puxct https://hal.archives-ouvertes.fr/hal-03015211/file/Schulien_etal_FiMS_2020.pdf https://hal.archives-ouvertes.fr/hal-03015211 other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 2296-7745 Frontiers in Marine Science Frontiers in Marine Science, Frontiers Media, 2020, 7, pp.493. ⟨10.3389/fmars.2020.00493⟩ ACL carbon impact north-atlantic mesoscale eddies satellite-observations backscatter depolarization hsrl light backscattering mueller matrix ocean color phytoplankton community composition reflectance toxic dinoflagellate envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.3389/fmars.2020.00493 2023-01-22T17:05:45Z WOS:000548189100001 International audience Changes in airborne high spectral resolution lidar (HSRL) measurements of scattering, depolarization, and attenuation coincided with a shift in phytoplankton community composition across an anticyclonic eddy in the North Atlantic. We normalized the total depolarization ratio (delta) by the particulate backscattering coefficient (b(b)(p)) to account for the covariance in delta and b(b)(p) that has been attributed to multiple scattering. A 15% increase in delta/b(b)(p) inside the eddy coincided with decreased phytoplankton biomass and a shift to smaller and more elongated phytoplankton cells. Taxonomic changes (reduced dinoflagellate relative abundance inside the eddy) were also observed. The delta signal is thus potentially most sensitive to changes in phytoplankton shape because neither the observed change in the particle size distribution (PSD) nor refractive index (assuming average refractive indices) are consistent with previous theoretical modeling results. We additionally calculated chlorophyll-a (Chl) concentrations from measurements of the diffuse light attenuation coefficient (K-d) and divided by b(b)(p) to evaluate another optical metric of phytoplankton community composition (Chl:b(bp)), which decreased by more than a factor of two inside the eddy. This case study demonstrates that the HSRL is able to detect changes in phytoplankton community composition. High spectral resolution lidar measurements reveal complex structures in both the vertical and horizontal distribution of phytoplankton in the mixed layer providing a valuable new tool to support other remote sensing techniques for studying mixed layer dynamics. Our results identify fronts at the periphery of mesoscale eddies as locations of abrupt changes in near-surface optical properties. Article in Journal/Newspaper North Atlantic Unknown Mueller ENVELOPE(55.533,55.533,-66.917,-66.917) Frontiers in Marine Science 7 |