Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations
Diatoms are the major marine primary producers in the Southern Ocean and a key component of the carbon and silicate biogeochemical cycle. Using 15 years of satellite-derived diatom concentration from September to April (1997–2012), we examine the mean patterns and the interannual variability of the...
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ftdoajarticles:oai:doaj.org/article:51674d93961141abadb39682f59ab56d 2023-05-15T13:33:10+02:00 Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations Mariana A. Soppa Christoph Völker Astrid Bracher 2016-05-01T00:00:00Z https://doi.org/10.3390/rs8050420 https://doaj.org/article/51674d93961141abadb39682f59ab56d EN eng MDPI AG http://www.mdpi.com/2072-4292/8/5/420 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs8050420 https://doaj.org/article/51674d93961141abadb39682f59ab56d Remote Sensing, Vol 8, Iss 5, p 420 (2016) diatom phenology phytoplankton SAM ENSO ocean colour Southern Ocean Science Q article 2016 ftdoajarticles https://doi.org/10.3390/rs8050420 2022-12-31T07:29:24Z Diatoms are the major marine primary producers in the Southern Ocean and a key component of the carbon and silicate biogeochemical cycle. Using 15 years of satellite-derived diatom concentration from September to April (1997–2012), we examine the mean patterns and the interannual variability of the diatom bloom phenology in the Southern Ocean. Mean spatial patterns of timing and duration of diatom blooms are generally associated with the position of the Southern Antarctic Circumpolar Current Front and of the maximum sea ice extent. In several areas the anomalies of phenological indices are found to be correlated with ENSO and SAM. Composite maps of the anomalies reveal distinct spatial patterns and opposite events of ENSO and SAM have similar effects on the diatom phenology. For example, in the Ross Sea region, a later start of the bloom and lower diatom biomass were observed associated with El Niño and negative SAM events; likely influenced by an increase in sea ice concentration during these events. Article in Journal/Newspaper Antarc* Antarctic Ross Sea Sea ice Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Ross Sea Remote Sensing 8 5 420 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
diatom phenology phytoplankton SAM ENSO ocean colour Southern Ocean Science Q |
spellingShingle |
diatom phenology phytoplankton SAM ENSO ocean colour Southern Ocean Science Q Mariana A. Soppa Christoph Völker Astrid Bracher Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations |
topic_facet |
diatom phenology phytoplankton SAM ENSO ocean colour Southern Ocean Science Q |
description |
Diatoms are the major marine primary producers in the Southern Ocean and a key component of the carbon and silicate biogeochemical cycle. Using 15 years of satellite-derived diatom concentration from September to April (1997–2012), we examine the mean patterns and the interannual variability of the diatom bloom phenology in the Southern Ocean. Mean spatial patterns of timing and duration of diatom blooms are generally associated with the position of the Southern Antarctic Circumpolar Current Front and of the maximum sea ice extent. In several areas the anomalies of phenological indices are found to be correlated with ENSO and SAM. Composite maps of the anomalies reveal distinct spatial patterns and opposite events of ENSO and SAM have similar effects on the diatom phenology. For example, in the Ross Sea region, a later start of the bloom and lower diatom biomass were observed associated with El Niño and negative SAM events; likely influenced by an increase in sea ice concentration during these events. |
format |
Article in Journal/Newspaper |
author |
Mariana A. Soppa Christoph Völker Astrid Bracher |
author_facet |
Mariana A. Soppa Christoph Völker Astrid Bracher |
author_sort |
Mariana A. Soppa |
title |
Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations |
title_short |
Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations |
title_full |
Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations |
title_fullStr |
Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations |
title_full_unstemmed |
Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations |
title_sort |
diatom phenology in the southern ocean: mean patterns, trends and the role of climate oscillations |
publisher |
MDPI AG |
publishDate |
2016 |
url |
https://doi.org/10.3390/rs8050420 https://doaj.org/article/51674d93961141abadb39682f59ab56d |
geographic |
Antarctic Southern Ocean Ross Sea |
geographic_facet |
Antarctic Southern Ocean Ross Sea |
genre |
Antarc* Antarctic Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ross Sea Sea ice Southern Ocean |
op_source |
Remote Sensing, Vol 8, Iss 5, p 420 (2016) |
op_relation |
http://www.mdpi.com/2072-4292/8/5/420 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs8050420 https://doaj.org/article/51674d93961141abadb39682f59ab56d |
op_doi |
https://doi.org/10.3390/rs8050420 |
container_title |
Remote Sensing |
container_volume |
8 |
container_issue |
5 |
container_start_page |
420 |
_version_ |
1766039218112430080 |