Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications
During the austral summer of 2014, an oceanographic cruise was conducted in the Ross Sea in the framework of the RoME (Ross Sea Mesoscale Experiment) Project. Forty-three hydrological stations were sampled within three different areas: the northern Ross Sea (RoME 1), Terra Nova Bay (RoME 2), and the...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , , , , , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | http://hdl.handle.net/11367/65884 https://doi.org/10.1371/journal.pone.0176033 http://www.plosone.org/ |
id |
ftuninapoliparth:oai:ricerca.uniparthenope.it:11367/65884 |
---|---|
record_format |
openpolar |
spelling |
ftuninapoliparth:oai:ricerca.uniparthenope.it:11367/65884 2024-04-14T08:01:22+00:00 Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications MANGONI, OLGA Saggiomo, Vincenzo Bolinesi, Francesco Margiotta, Francesca BUDILLON, Giorgio COTRONEO, Yuri Misic, Cristina RIVARO, Paola Saggiomo, Maria Mangoni, Olga Saggiomo, Vincenzo Bolinesi, Francesco Margiotta, Francesca Budillon, Giorgio Cotroneo, Yuri Misic, Cristina Rivaro, Paola Saggiomo, Maria 2017 http://hdl.handle.net/11367/65884 https://doi.org/10.1371/journal.pone.0176033 http://www.plosone.org/ eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000399876100026 volume:12 issue:4 firstpage:1 lastpage:23 numberofpages:23 journal:PLOS ONE http://hdl.handle.net/11367/65884 doi:10.1371/journal.pone.0176033 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85018463362 http://www.plosone.org/ Antarctic Region Climate Change Phytoplankton Season Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) info:eu-repo/semantics/article 2017 ftuninapoliparth https://doi.org/10.1371/journal.pone.0176033 2024-03-21T18:01:58Z During the austral summer of 2014, an oceanographic cruise was conducted in the Ross Sea in the framework of the RoME (Ross Sea Mesoscale Experiment) Project. Forty-three hydrological stations were sampled within three different areas: the northern Ross Sea (RoME 1), Terra Nova Bay (RoME 2), and the southern Ross Sea (RoME 3). The ecological and photophysiological characteristics of the phytoplankton were investigated (i.e., size structure, functional groups, PSII maximum quantum efficiency, photoprotective pigments), as related to hydrographic and chemical features. The aim was to identify the mechanisms that modulate phytoplankton blooms, and consequently, the fate of organic materials produced by the blooms. The observed biomass standing stocks were very high (e.g., integrated chlorophyll-a up to 371 mg m-2 in the top 100 m). Large differences in phytoplankton community composition, relative contribution of functional groups and photosynthetic parameters were observed among the three subsystems. The diatoms (in different physiological status) were the dominant taxa in RoME 1 and RoME 3; in RoME 1, a post-bloom phase was identified, whereas in RoME 3, an active phytoplankton bloom occurred. In RoME 2, diatoms co-occurred with Phaeocystis antarctica, but were vertically segregated by the upper mixed layer, with senescent diatoms dominating in the upper layer, and P. antarctica blooming in the deeper layer. The dominance of the phytoplankton micro-fraction over the whole area and the high Chl-a suggested the prevalence of non-grazed large cells, independent of the distribution of the two functional groups. These data emphasise the occurrence of significant temporal changes in the phytoplankton biomass in the Ross Sea during austral summer. The mechanisms that drive such changes and the fate of the carbon production are probably related to the variations in the limiting factors induced by the concurrent hydrological modifications to the Ross Sea, and they remain to be fully clarified. The comparison of conditions ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Università degli Studi di Napoli "Parthenope": CINECA IRIS Antarctic Austral Ross Sea Terra Nova Bay PLOS ONE 12 4 e0176033 |
institution |
Open Polar |
collection |
Università degli Studi di Napoli "Parthenope": CINECA IRIS |
op_collection_id |
ftuninapoliparth |
language |
English |
topic |
Antarctic Region Climate Change Phytoplankton Season Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) |
spellingShingle |
Antarctic Region Climate Change Phytoplankton Season Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) MANGONI, OLGA Saggiomo, Vincenzo Bolinesi, Francesco Margiotta, Francesca BUDILLON, Giorgio COTRONEO, Yuri Misic, Cristina RIVARO, Paola Saggiomo, Maria Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications |
topic_facet |
Antarctic Region Climate Change Phytoplankton Season Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) |
description |
During the austral summer of 2014, an oceanographic cruise was conducted in the Ross Sea in the framework of the RoME (Ross Sea Mesoscale Experiment) Project. Forty-three hydrological stations were sampled within three different areas: the northern Ross Sea (RoME 1), Terra Nova Bay (RoME 2), and the southern Ross Sea (RoME 3). The ecological and photophysiological characteristics of the phytoplankton were investigated (i.e., size structure, functional groups, PSII maximum quantum efficiency, photoprotective pigments), as related to hydrographic and chemical features. The aim was to identify the mechanisms that modulate phytoplankton blooms, and consequently, the fate of organic materials produced by the blooms. The observed biomass standing stocks were very high (e.g., integrated chlorophyll-a up to 371 mg m-2 in the top 100 m). Large differences in phytoplankton community composition, relative contribution of functional groups and photosynthetic parameters were observed among the three subsystems. The diatoms (in different physiological status) were the dominant taxa in RoME 1 and RoME 3; in RoME 1, a post-bloom phase was identified, whereas in RoME 3, an active phytoplankton bloom occurred. In RoME 2, diatoms co-occurred with Phaeocystis antarctica, but were vertically segregated by the upper mixed layer, with senescent diatoms dominating in the upper layer, and P. antarctica blooming in the deeper layer. The dominance of the phytoplankton micro-fraction over the whole area and the high Chl-a suggested the prevalence of non-grazed large cells, independent of the distribution of the two functional groups. These data emphasise the occurrence of significant temporal changes in the phytoplankton biomass in the Ross Sea during austral summer. The mechanisms that drive such changes and the fate of the carbon production are probably related to the variations in the limiting factors induced by the concurrent hydrological modifications to the Ross Sea, and they remain to be fully clarified. The comparison of conditions ... |
author2 |
Mangoni, Olga Saggiomo, Vincenzo Bolinesi, Francesco Margiotta, Francesca Budillon, Giorgio Cotroneo, Yuri Misic, Cristina Rivaro, Paola Saggiomo, Maria |
format |
Article in Journal/Newspaper |
author |
MANGONI, OLGA Saggiomo, Vincenzo Bolinesi, Francesco Margiotta, Francesca BUDILLON, Giorgio COTRONEO, Yuri Misic, Cristina RIVARO, Paola Saggiomo, Maria |
author_facet |
MANGONI, OLGA Saggiomo, Vincenzo Bolinesi, Francesco Margiotta, Francesca BUDILLON, Giorgio COTRONEO, Yuri Misic, Cristina RIVARO, Paola Saggiomo, Maria |
author_sort |
MANGONI, OLGA |
title |
Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications |
title_short |
Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications |
title_full |
Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications |
title_fullStr |
Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications |
title_full_unstemmed |
Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications |
title_sort |
phytoplankton blooms during austral summer in the ross sea, antarctica: driving factors and trophic implications |
publishDate |
2017 |
url |
http://hdl.handle.net/11367/65884 https://doi.org/10.1371/journal.pone.0176033 http://www.plosone.org/ |
geographic |
Antarctic Austral Ross Sea Terra Nova Bay |
geographic_facet |
Antarctic Austral Ross Sea Terra Nova Bay |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000399876100026 volume:12 issue:4 firstpage:1 lastpage:23 numberofpages:23 journal:PLOS ONE http://hdl.handle.net/11367/65884 doi:10.1371/journal.pone.0176033 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85018463362 http://www.plosone.org/ |
op_doi |
https://doi.org/10.1371/journal.pone.0176033 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
4 |
container_start_page |
e0176033 |
_version_ |
1796308555572183040 |