Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini
Polar ecosystems are sensitive to climate forcing, and we often lack baselines to evaluate changes. Here we report a nearly 50-year study in which a sudden shift in the population dynamics of an ecologically important, structure-forming hexactinellid sponge, Anoxycalyx joubini was observed. This is...
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ftpubmed:oai:pubmedcentral.nih.gov:3584113 2023-05-15T14:03:02+02:00 Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini Dayton, Paul K. Kim, Stacy Jarrell, Shannon C. Oliver, John S. Hammerstrom, Kamille Fisher, Jennifer L. O’Connor, Kevin Barber, Julie S. Robilliard, Gordon Barry, James Thurber, Andrew R. Conlan, Kathy 2013-02-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584113 http://www.ncbi.nlm.nih.gov/pubmed/23460822 https://doi.org/10.1371/journal.pone.0056939 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584113 http://www.ncbi.nlm.nih.gov/pubmed/23460822 http://dx.doi.org/10.1371/journal.pone.0056939 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2013 ftpubmed https://doi.org/10.1371/journal.pone.0056939 2013-09-04T20:26:33Z Polar ecosystems are sensitive to climate forcing, and we often lack baselines to evaluate changes. Here we report a nearly 50-year study in which a sudden shift in the population dynamics of an ecologically important, structure-forming hexactinellid sponge, Anoxycalyx joubini was observed. This is the largest Antarctic sponge, with individuals growing over two meters tall. In order to investigate life history characteristics of Antarctic marine invertebrates, artificial substrata were deployed at a number of sites in the southern portion of the Ross Sea between 1967 and 1975. Over a 22-year period, no growth or settlement was recorded for A. joubini on these substrata; however, in 2004 and 2010, A. joubini was observed to have settled and grown to large sizes on some but not all artificial substrata. This single settlement and growth event correlates with a region-wide shift in phytoplankton productivity driven by the calving of a massive iceberg. We also report almost complete mortality of large sponges followed over 40 years. Given our warming global climate, similar system-wide changes are expected in the future. Text Antarc* Antarctic Iceberg* Ross Sea PubMed Central (PMC) Antarctic Ross Sea PLoS ONE 8 2 e56939 |
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English |
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Research Article |
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Research Article Dayton, Paul K. Kim, Stacy Jarrell, Shannon C. Oliver, John S. Hammerstrom, Kamille Fisher, Jennifer L. O’Connor, Kevin Barber, Julie S. Robilliard, Gordon Barry, James Thurber, Andrew R. Conlan, Kathy Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini |
topic_facet |
Research Article |
description |
Polar ecosystems are sensitive to climate forcing, and we often lack baselines to evaluate changes. Here we report a nearly 50-year study in which a sudden shift in the population dynamics of an ecologically important, structure-forming hexactinellid sponge, Anoxycalyx joubini was observed. This is the largest Antarctic sponge, with individuals growing over two meters tall. In order to investigate life history characteristics of Antarctic marine invertebrates, artificial substrata were deployed at a number of sites in the southern portion of the Ross Sea between 1967 and 1975. Over a 22-year period, no growth or settlement was recorded for A. joubini on these substrata; however, in 2004 and 2010, A. joubini was observed to have settled and grown to large sizes on some but not all artificial substrata. This single settlement and growth event correlates with a region-wide shift in phytoplankton productivity driven by the calving of a massive iceberg. We also report almost complete mortality of large sponges followed over 40 years. Given our warming global climate, similar system-wide changes are expected in the future. |
format |
Text |
author |
Dayton, Paul K. Kim, Stacy Jarrell, Shannon C. Oliver, John S. Hammerstrom, Kamille Fisher, Jennifer L. O’Connor, Kevin Barber, Julie S. Robilliard, Gordon Barry, James Thurber, Andrew R. Conlan, Kathy |
author_facet |
Dayton, Paul K. Kim, Stacy Jarrell, Shannon C. Oliver, John S. Hammerstrom, Kamille Fisher, Jennifer L. O’Connor, Kevin Barber, Julie S. Robilliard, Gordon Barry, James Thurber, Andrew R. Conlan, Kathy |
author_sort |
Dayton, Paul K. |
title |
Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini |
title_short |
Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini |
title_full |
Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini |
title_fullStr |
Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini |
title_full_unstemmed |
Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini |
title_sort |
recruitment, growth and mortality of an antarctic hexactinellid sponge, anoxycalyx joubini |
publisher |
Public Library of Science |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584113 http://www.ncbi.nlm.nih.gov/pubmed/23460822 https://doi.org/10.1371/journal.pone.0056939 |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Iceberg* Ross Sea |
genre_facet |
Antarc* Antarctic Iceberg* Ross Sea |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584113 http://www.ncbi.nlm.nih.gov/pubmed/23460822 http://dx.doi.org/10.1371/journal.pone.0056939 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0056939 |
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PLoS ONE |
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8 |
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2 |
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e56939 |
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