Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula
The western Antarctic Peninsula (WAP) is one of the most productive regions in the Southern Ocean. However, little is known about the phytoplankton composition in nearshore waters, in fords and channels between 63º and 67°S, where Antarctic krill and baleen whales are conspicuous. This study represe...
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ftunivlaplata:oai:sedici.unlp.edu.ar:10915/143562 2023-05-15T14:01:53+02:00 Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula Mascioni, Martina Almandoz, Gastón Osvaldo Cefarelli, Adrián Oscar Cusick, Allison Ferrario, Martha Elba Vernet, María 2019-09-05 application/pdf 1859-1872 http://sedici.unlp.edu.ar/handle/10915/143562 en eng http://sedici.unlp.edu.ar/handle/10915/143562 issn:0722-4060 issn:1432-2056 http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) CC-BY Ciencias Naturales Western Antarctic Peninsula Citizen Science Diatoms Cryptophyta Pyramimonas sp Unarmored dinofagellate bloom Articulo 2019 ftunivlaplata 2022-10-16T00:07:26Z The western Antarctic Peninsula (WAP) is one of the most productive regions in the Southern Ocean. However, little is known about the phytoplankton composition in nearshore waters, in fords and channels between 63º and 67°S, where Antarctic krill and baleen whales are conspicuous. This study represents the frst attempt to describe spatial and temporal composition of the phytoplankton community (species, cell concentration, phytoplankton biomass) in twelve relatively unexplored nearshore sites of the WAP. Sampling was carried out in the frame of a Citizen Science project during late summer of 2016 and during the spring–summer 2016–2017. Species identifcation and enumeration were performed by light and scanning electron microscopy and phytoplankton carbon biomass was estimated by using cell-volume conversion. The highest phytoplankton abundance and biomass values were found in December-January, and were mainly represented by nanophytofagellates (2–20 µm). Cryptophytes were more abundant in early summer and prasinophyceans in late summer. The abundance of large bloom-forming diatoms was unexpectedly low. Three blooming fagellated taxa were found during the sampling season, chronologically: Pyramimonas sp. in Neko Harbor (March 3, 2016, 1.4×106 cells L−1, and 327 µgC L−1), cryptophytes in Wilhelmina Bay (December 14, 2016, 6.4×106 cells L−1, and 97.5 µgC L−1) and unidentifed unarmored dinofagellates near Danco Island (December 18, 2016, 9.5×106 cells L−1, and 1597 µgC L−1). The last one represents, as far as we know, the frst record of a dinofagellate bloom in the WAP. It is to note that blooming organisms, analyzed morphologically, do not coincide with previously described Antarctic species. Facultad de Ciencias Naturales y Museo Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula baleen whales Danco Island Southern Ocean Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) Antarctic Southern Ocean Antarctic Peninsula Wilhelmina ENVELOPE(-62.160,-62.160,-64.642,-64.642) Neko ENVELOPE(-62.533,-62.533,-64.838,-64.838) Danco ENVELOPE(-61.033,-61.033,-64.717,-64.717) Wilhelmina Bay ENVELOPE(-62.160,-62.160,-64.642,-64.642) Danco Island ENVELOPE(-62.617,-62.617,-64.733,-64.733) Neko Harbor ENVELOPE(-62.550,-62.550,-64.833,-64.833) |
institution |
Open Polar |
collection |
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
op_collection_id |
ftunivlaplata |
language |
English |
topic |
Ciencias Naturales Western Antarctic Peninsula Citizen Science Diatoms Cryptophyta Pyramimonas sp Unarmored dinofagellate bloom |
spellingShingle |
Ciencias Naturales Western Antarctic Peninsula Citizen Science Diatoms Cryptophyta Pyramimonas sp Unarmored dinofagellate bloom Mascioni, Martina Almandoz, Gastón Osvaldo Cefarelli, Adrián Oscar Cusick, Allison Ferrario, Martha Elba Vernet, María Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula |
topic_facet |
Ciencias Naturales Western Antarctic Peninsula Citizen Science Diatoms Cryptophyta Pyramimonas sp Unarmored dinofagellate bloom |
description |
The western Antarctic Peninsula (WAP) is one of the most productive regions in the Southern Ocean. However, little is known about the phytoplankton composition in nearshore waters, in fords and channels between 63º and 67°S, where Antarctic krill and baleen whales are conspicuous. This study represents the frst attempt to describe spatial and temporal composition of the phytoplankton community (species, cell concentration, phytoplankton biomass) in twelve relatively unexplored nearshore sites of the WAP. Sampling was carried out in the frame of a Citizen Science project during late summer of 2016 and during the spring–summer 2016–2017. Species identifcation and enumeration were performed by light and scanning electron microscopy and phytoplankton carbon biomass was estimated by using cell-volume conversion. The highest phytoplankton abundance and biomass values were found in December-January, and were mainly represented by nanophytofagellates (2–20 µm). Cryptophytes were more abundant in early summer and prasinophyceans in late summer. The abundance of large bloom-forming diatoms was unexpectedly low. Three blooming fagellated taxa were found during the sampling season, chronologically: Pyramimonas sp. in Neko Harbor (March 3, 2016, 1.4×106 cells L−1, and 327 µgC L−1), cryptophytes in Wilhelmina Bay (December 14, 2016, 6.4×106 cells L−1, and 97.5 µgC L−1) and unidentifed unarmored dinofagellates near Danco Island (December 18, 2016, 9.5×106 cells L−1, and 1597 µgC L−1). The last one represents, as far as we know, the frst record of a dinofagellate bloom in the WAP. It is to note that blooming organisms, analyzed morphologically, do not coincide with previously described Antarctic species. Facultad de Ciencias Naturales y Museo |
format |
Article in Journal/Newspaper |
author |
Mascioni, Martina Almandoz, Gastón Osvaldo Cefarelli, Adrián Oscar Cusick, Allison Ferrario, Martha Elba Vernet, María |
author_facet |
Mascioni, Martina Almandoz, Gastón Osvaldo Cefarelli, Adrián Oscar Cusick, Allison Ferrario, Martha Elba Vernet, María |
author_sort |
Mascioni, Martina |
title |
Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula |
title_short |
Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula |
title_full |
Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula |
title_fullStr |
Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula |
title_full_unstemmed |
Phytoplankton composition and bloom formation in unexplored nearshore waters of the western Antarctic Peninsula |
title_sort |
phytoplankton composition and bloom formation in unexplored nearshore waters of the western antarctic peninsula |
publishDate |
2019 |
url |
http://sedici.unlp.edu.ar/handle/10915/143562 |
long_lat |
ENVELOPE(-62.160,-62.160,-64.642,-64.642) ENVELOPE(-62.533,-62.533,-64.838,-64.838) ENVELOPE(-61.033,-61.033,-64.717,-64.717) ENVELOPE(-62.160,-62.160,-64.642,-64.642) ENVELOPE(-62.617,-62.617,-64.733,-64.733) ENVELOPE(-62.550,-62.550,-64.833,-64.833) |
geographic |
Antarctic Southern Ocean Antarctic Peninsula Wilhelmina Neko Danco Wilhelmina Bay Danco Island Neko Harbor |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula Wilhelmina Neko Danco Wilhelmina Bay Danco Island Neko Harbor |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula baleen whales Danco Island Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula baleen whales Danco Island Southern Ocean |
op_relation |
http://sedici.unlp.edu.ar/handle/10915/143562 issn:0722-4060 issn:1432-2056 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
op_rightsnorm |
CC-BY |
_version_ |
1766271948363399168 |