New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait
Changes in phytoplankton composition from large diatoms to small cryptophytes and their implications to the food web have been previously associated with rapid warming of surface waters in the western Antarctic Peninsula (WAP). However, ecological and physiological attributes that favor dominance of...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/80851/ https://ueaeprints.uea.ac.uk/id/eprint/80851/1/Accepted_Manuscript.pdf https://doi.org/10.1016/j.dsr2.2017.02.010 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:80851 2023-05-15T14:04:01+02:00 New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait Mendes, Carlos Rafael Borges Tavano, Virginia Maria Dotto, Tiago Segabinazzi Kerr, Rodrigo De Souza, Márcio Silva Garcia, Carlos Alberto Eiras Secchi, Eduardo Resende 2018-03-01 application/pdf https://ueaeprints.uea.ac.uk/id/eprint/80851/ https://ueaeprints.uea.ac.uk/id/eprint/80851/1/Accepted_Manuscript.pdf https://doi.org/10.1016/j.dsr2.2017.02.010 en eng https://ueaeprints.uea.ac.uk/id/eprint/80851/1/Accepted_Manuscript.pdf Mendes, Carlos Rafael Borges, Tavano, Virginia Maria, Dotto, Tiago Segabinazzi, Kerr, Rodrigo, De Souza, Márcio Silva, Garcia, Carlos Alberto Eiras and Secchi, Eduardo Resende (2018) New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait. Deep-Sea Research Part II: Topical Studies in Oceanography, 149. pp. 161-170. ISSN 0967-0645 doi:10.1016/j.dsr2.2017.02.010 cc_by_nc_nd CC-BY-NC-ND Article PeerReviewed 2018 ftuniveastangl https://doi.org/10.1016/j.dsr2.2017.02.010 2023-01-30T21:55:25Z Changes in phytoplankton composition from large diatoms to small cryptophytes and their implications to the food web have been previously associated with rapid warming of surface waters in the western Antarctic Peninsula (WAP). However, ecological and physiological attributes that favor dominance of these flagellates in the region have not been fully explored. The overall aim of this work was to characterize the phytoplankton pigments and assemblages in relation to environmental conditions during three successive summer cruises (2013, 2014 and 2015) in the Gerlache Strait − a coastal area in the northern WAP. Data on phytoplankton (through HPLC/CHEMTAX pigment analysis) and associated physical (water column structure) and chemical (macronutrients) parameters were determined. Cryptophytes were conspicuously found in shallow mixed layers, under stratified conditions, as the main contributors to total phytoplankton biomass. Their greatest contributions were associated with warmer surface waters at the northwestern sector of the strait. Other phytoplankton groups (Phaeocystis antarctica in 2013 and small diatoms in both 2014 and 2015) were also important components. Photoprotective carotenoids (mainly alloxanthin), with an important role in preventing photodamage caused by excess light, were closely linked with the dominance of cryptophytes at surface layers. The results of this study suggest that the prevalence of cryptophytes in WAP coastal waters can be, to a great extent, due to a particular ability of those small flagellates to successfully grow in highly illuminated conditions in shallow upper mixed layers and strong water column stratification. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica University of East Anglia: UEA Digital Repository Antarctic Antarctic Peninsula Gerlache ENVELOPE(99.033,99.033,-66.500,-66.500) Gerlache Strait ENVELOPE(-62.333,-62.333,-64.500,-64.500) Deep Sea Research Part II: Topical Studies in Oceanography 149 161 170 |
institution |
Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
English |
description |
Changes in phytoplankton composition from large diatoms to small cryptophytes and their implications to the food web have been previously associated with rapid warming of surface waters in the western Antarctic Peninsula (WAP). However, ecological and physiological attributes that favor dominance of these flagellates in the region have not been fully explored. The overall aim of this work was to characterize the phytoplankton pigments and assemblages in relation to environmental conditions during three successive summer cruises (2013, 2014 and 2015) in the Gerlache Strait − a coastal area in the northern WAP. Data on phytoplankton (through HPLC/CHEMTAX pigment analysis) and associated physical (water column structure) and chemical (macronutrients) parameters were determined. Cryptophytes were conspicuously found in shallow mixed layers, under stratified conditions, as the main contributors to total phytoplankton biomass. Their greatest contributions were associated with warmer surface waters at the northwestern sector of the strait. Other phytoplankton groups (Phaeocystis antarctica in 2013 and small diatoms in both 2014 and 2015) were also important components. Photoprotective carotenoids (mainly alloxanthin), with an important role in preventing photodamage caused by excess light, were closely linked with the dominance of cryptophytes at surface layers. The results of this study suggest that the prevalence of cryptophytes in WAP coastal waters can be, to a great extent, due to a particular ability of those small flagellates to successfully grow in highly illuminated conditions in shallow upper mixed layers and strong water column stratification. |
format |
Article in Journal/Newspaper |
author |
Mendes, Carlos Rafael Borges Tavano, Virginia Maria Dotto, Tiago Segabinazzi Kerr, Rodrigo De Souza, Márcio Silva Garcia, Carlos Alberto Eiras Secchi, Eduardo Resende |
spellingShingle |
Mendes, Carlos Rafael Borges Tavano, Virginia Maria Dotto, Tiago Segabinazzi Kerr, Rodrigo De Souza, Márcio Silva Garcia, Carlos Alberto Eiras Secchi, Eduardo Resende New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait |
author_facet |
Mendes, Carlos Rafael Borges Tavano, Virginia Maria Dotto, Tiago Segabinazzi Kerr, Rodrigo De Souza, Márcio Silva Garcia, Carlos Alberto Eiras Secchi, Eduardo Resende |
author_sort |
Mendes, Carlos Rafael Borges |
title |
New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait |
title_short |
New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait |
title_full |
New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait |
title_fullStr |
New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait |
title_full_unstemmed |
New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait |
title_sort |
new insights on the dominance of cryptophytes in antarctic coastal waters: a case study in gerlache strait |
publishDate |
2018 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/80851/ https://ueaeprints.uea.ac.uk/id/eprint/80851/1/Accepted_Manuscript.pdf https://doi.org/10.1016/j.dsr2.2017.02.010 |
long_lat |
ENVELOPE(99.033,99.033,-66.500,-66.500) ENVELOPE(-62.333,-62.333,-64.500,-64.500) |
geographic |
Antarctic Antarctic Peninsula Gerlache Gerlache Strait |
geographic_facet |
Antarctic Antarctic Peninsula Gerlache Gerlache Strait |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
https://ueaeprints.uea.ac.uk/id/eprint/80851/1/Accepted_Manuscript.pdf Mendes, Carlos Rafael Borges, Tavano, Virginia Maria, Dotto, Tiago Segabinazzi, Kerr, Rodrigo, De Souza, Márcio Silva, Garcia, Carlos Alberto Eiras and Secchi, Eduardo Resende (2018) New insights on the dominance of cryptophytes in Antarctic coastal waters: A case study in Gerlache Strait. Deep-Sea Research Part II: Topical Studies in Oceanography, 149. pp. 161-170. ISSN 0967-0645 doi:10.1016/j.dsr2.2017.02.010 |
op_rights |
cc_by_nc_nd |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.dsr2.2017.02.010 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
149 |
container_start_page |
161 |
op_container_end_page |
170 |
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1766274965295857664 |