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...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3584113?pdf=render |
| _version_ | 1818137009350246400 |
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| author | Paul K Dayton Stacy Kim Shannon C Jarrell John S Oliver Kamille Hammerstrom Jennifer L Fisher Kevin O'Connor Julie S Barber Gordon Robilliard James Barry Andrew R Thurber Kathy Conlan |
| author_facet | Paul K Dayton Stacy Kim Shannon C Jarrell John S Oliver Kamille Hammerstrom Jennifer L Fisher Kevin O'Connor Julie S Barber Gordon Robilliard James Barry Andrew R Thurber Kathy Conlan |
| author_sort | Paul K Dayton |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-11T09:49:29Z |
| format | Article |
| id | doaj.art-b9167fcccd1045169bad9961a5933cd7 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-11T09:49:29Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-b9167fcccd1045169bad9961a5933cd72022-12-22T01:12:28ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0182e5693910.1371/journal.pone.0056939Recruitment, growth and mortality of an Antarctic hexactinellid sponge, Anoxycalyx joubini.Paul K DaytonStacy KimShannon C JarrellJohn S OliverKamille HammerstromJennifer L FisherKevin O'ConnorJulie S BarberGordon RobilliardJames BarryAndrew R ThurberKathy ConlanPolar 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.http://europepmc.org/articles/PMC3584113?pdf=render |
| spellingShingle | Paul K Dayton Stacy Kim Shannon C Jarrell John S Oliver Kamille Hammerstrom Jennifer L Fisher Kevin O'Connor Julie S Barber Gordon Robilliard James Barry Andrew R Thurber Kathy Conlan Recruitment, growth and mortality of an Antarctic hexactinellid sponge, Anoxycalyx joubini. PLoS ONE |
| title | 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_short | Recruitment, growth and mortality of an Antarctic hexactinellid sponge, Anoxycalyx joubini. |
| title_sort | recruitment growth and mortality of an antarctic hexactinellid sponge anoxycalyx joubini |
| url | http://europepmc.org/articles/PMC3584113?pdf=render |
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