DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1
Our pigment analyses from a year‐long study in the coastal Beaufort Sea in the western Canadian Arctic showed the continuous prevalence of eukaryotic picoplankton in the green algal class Prasinophyceae. Microscopic analyses revealed that the most abundant photosynthetic cell types were Micromonas ‐...
Published in: | Journal of Phycology |
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crwiley:10.1111/j.1529-8817.2006.00310.x 2024-06-23T07:48:52+00:00 DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 Lovejoy, Connie Vincent, Warwick F. Bonilla, Sylvia Roy, Suzanne Martineau, Marie‐Josée Terrado, Ramon Potvin, Marianne Massana, Ramon Pedrós‐Alió, Carlos 2007 http://dx.doi.org/10.1111/j.1529-8817.2006.00310.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.2006.00310.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.2006.00310.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Phycology volume 43, issue 1, page 78-89 ISSN 0022-3646 1529-8817 journal-article 2007 crwiley https://doi.org/10.1111/j.1529-8817.2006.00310.x 2024-06-11T04:52:28Z Our pigment analyses from a year‐long study in the coastal Beaufort Sea in the western Canadian Arctic showed the continuous prevalence of eukaryotic picoplankton in the green algal class Prasinophyceae. Microscopic analyses revealed that the most abundant photosynthetic cell types were Micromonas ‐like picoprasinophytes that persisted throughout winter darkness and then maintained steady exponential growth from late winter to early summer. A Micromonas (CCMP2099) isolated from an Arctic polynya (North Water Polynya between Ellesmere Island and Greenland), an ice‐free section, grew optimally at 6°C–8°C, with light saturation at or below 10 μmol photons·m −2 ·s −1 at 0°C. The 18S rDNA analyses of this isolate and environmental DNA clone libraries from diverse sites across the Arctic Basin indicate that this single psychrophilic Micromonas ecotype has a pan‐Arctic distribution. The 18S rDNA from two other picoprasinophyte genera was also found in our pan‐Arctic clone libraries: Bathycoccus and Mantoniella . The Arctic Micromonas differed from genotypes elsewhere in the World Ocean, implying that the Arctic Basin is a marine microbial province containing endemic species, consistent with the biogeography of its macroorganisms. The prevalence of obligate low‐temperature, shade‐adapted species in the phytoplankton indicates that the lower food web of the Arctic Ocean is vulnerable to ongoing climate change in the region. Article in Journal/Newspaper Arctic Basin Arctic Arctic Ocean Beaufort Sea Climate change Ellesmere Island Greenland Phytoplankton Wiley Online Library Arctic Arctic Ocean Ellesmere Island Greenland Journal of Phycology 43 1 78 89 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Our pigment analyses from a year‐long study in the coastal Beaufort Sea in the western Canadian Arctic showed the continuous prevalence of eukaryotic picoplankton in the green algal class Prasinophyceae. Microscopic analyses revealed that the most abundant photosynthetic cell types were Micromonas ‐like picoprasinophytes that persisted throughout winter darkness and then maintained steady exponential growth from late winter to early summer. A Micromonas (CCMP2099) isolated from an Arctic polynya (North Water Polynya between Ellesmere Island and Greenland), an ice‐free section, grew optimally at 6°C–8°C, with light saturation at or below 10 μmol photons·m −2 ·s −1 at 0°C. The 18S rDNA analyses of this isolate and environmental DNA clone libraries from diverse sites across the Arctic Basin indicate that this single psychrophilic Micromonas ecotype has a pan‐Arctic distribution. The 18S rDNA from two other picoprasinophyte genera was also found in our pan‐Arctic clone libraries: Bathycoccus and Mantoniella . The Arctic Micromonas differed from genotypes elsewhere in the World Ocean, implying that the Arctic Basin is a marine microbial province containing endemic species, consistent with the biogeography of its macroorganisms. The prevalence of obligate low‐temperature, shade‐adapted species in the phytoplankton indicates that the lower food web of the Arctic Ocean is vulnerable to ongoing climate change in the region. |
format |
Article in Journal/Newspaper |
author |
Lovejoy, Connie Vincent, Warwick F. Bonilla, Sylvia Roy, Suzanne Martineau, Marie‐Josée Terrado, Ramon Potvin, Marianne Massana, Ramon Pedrós‐Alió, Carlos |
spellingShingle |
Lovejoy, Connie Vincent, Warwick F. Bonilla, Sylvia Roy, Suzanne Martineau, Marie‐Josée Terrado, Ramon Potvin, Marianne Massana, Ramon Pedrós‐Alió, Carlos DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 |
author_facet |
Lovejoy, Connie Vincent, Warwick F. Bonilla, Sylvia Roy, Suzanne Martineau, Marie‐Josée Terrado, Ramon Potvin, Marianne Massana, Ramon Pedrós‐Alió, Carlos |
author_sort |
Lovejoy, Connie |
title |
DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 |
title_short |
DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 |
title_full |
DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 |
title_fullStr |
DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 |
title_full_unstemmed |
DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 |
title_sort |
distribution, phylogeny, and growth of cold‐adapted picoprasinophytes in arctic seas 1 |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1529-8817.2006.00310.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.2006.00310.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.2006.00310.x |
geographic |
Arctic Arctic Ocean Ellesmere Island Greenland |
geographic_facet |
Arctic Arctic Ocean Ellesmere Island Greenland |
genre |
Arctic Basin Arctic Arctic Ocean Beaufort Sea Climate change Ellesmere Island Greenland Phytoplankton |
genre_facet |
Arctic Basin Arctic Arctic Ocean Beaufort Sea Climate change Ellesmere Island Greenland Phytoplankton |
op_source |
Journal of Phycology volume 43, issue 1, page 78-89 ISSN 0022-3646 1529-8817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1529-8817.2006.00310.x |
container_title |
Journal of Phycology |
container_volume |
43 |
container_issue |
1 |
container_start_page |
78 |
op_container_end_page |
89 |
_version_ |
1802639192875859968 |