The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods
In the Southern Ocean, pteropods play an important role in biogeochemical cycling, and sediment traps are a valuable tool for investigating this role through the collection of passively sinking matter from productive surface waters to deep sea layers. Observations of swimmers (e.g. organisms that ac...
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Online Access: | https://doi.org/10.1007/s00300-021-02809-4 http://ecite.utas.edu.au/143779 |
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ftunivtasecite:oai:ecite.utas.edu.au:143779 2023-05-15T13:59:46+02:00 The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods Weldrick, CK Makabe, R Mizobata, K Moteki, M Odate, T Takao, S Trebilco, R Swadling, KM 2021 https://doi.org/10.1007/s00300-021-02809-4 http://ecite.utas.edu.au/143779 en eng Springer-Verlag http://dx.doi.org/10.1007/s00300-021-02809-4 Weldrick, CK and Makabe, R and Mizobata, K and Moteki, M and Odate, T and Takao, S and Trebilco, R and Swadling, KM, The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods, Polar Biology, 44 pp. 457-472. ISSN 0722-4060 (2021) [Refereed Article] http://ecite.utas.edu.au/143779 Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Refereed Article PeerReviewed 2021 ftunivtasecite https://doi.org/10.1007/s00300-021-02809-4 2021-10-11T22:16:43Z In the Southern Ocean, pteropods play an important role in biogeochemical cycling, and sediment traps are a valuable tool for investigating this role through the collection of passively sinking matter from productive surface waters to deep sea layers. Observations of swimmers (e.g. organisms that actively swim into traps) can also prove valuable for studying zooplankton community structure. In this study, we used two separate sediment trap studies during the 20162017 summer to study pteropod population structure over time scales of 24h and 28days. In both studies, highest densities were measured for veliger-stage Limacina helicina antarctica (0.090.3mm) relative to all species and age classes. Increases in shell diameters of veligers in all traps over time enabled the calculation of an intraseasonal potential growth rate of 0.0068mm d −1 . Swimmer flux rates ranged from 121 to 2674 ind. m −2 d −1 at 53m depth, and the 24-h vertical flux study measured 960 ind. m −2 d −1 at 57m depth and 6692m −2 d −1 at 90m depth. Among a suite of environmental and biological covariates tested, fluorescence and sinking particulate organic and inorganic carbon (POC and PIC) possessed the most predictive power to explain abundances of near-surface pteropod age class and species composition. Gymnosome abundances were largely influenced by increasing adult L. helicina antarctica counts. Changes to pteropod population and community dynamics in response to climate change will have cascading effects throughout Antarctic epipelagic food webs, and these results provide a regional snapshot of patterns in structure and sedimentation from an under-surveyed region of the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctica Limacina helicina Polar Biology Southern Ocean eCite UTAS (University of Tasmania) Antarctic Southern Ocean Polar Biology 44 3 457 472 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Weldrick, CK Makabe, R Mizobata, K Moteki, M Odate, T Takao, S Trebilco, R Swadling, KM The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods |
topic_facet |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
description |
In the Southern Ocean, pteropods play an important role in biogeochemical cycling, and sediment traps are a valuable tool for investigating this role through the collection of passively sinking matter from productive surface waters to deep sea layers. Observations of swimmers (e.g. organisms that actively swim into traps) can also prove valuable for studying zooplankton community structure. In this study, we used two separate sediment trap studies during the 20162017 summer to study pteropod population structure over time scales of 24h and 28days. In both studies, highest densities were measured for veliger-stage Limacina helicina antarctica (0.090.3mm) relative to all species and age classes. Increases in shell diameters of veligers in all traps over time enabled the calculation of an intraseasonal potential growth rate of 0.0068mm d −1 . Swimmer flux rates ranged from 121 to 2674 ind. m −2 d −1 at 53m depth, and the 24-h vertical flux study measured 960 ind. m −2 d −1 at 57m depth and 6692m −2 d −1 at 90m depth. Among a suite of environmental and biological covariates tested, fluorescence and sinking particulate organic and inorganic carbon (POC and PIC) possessed the most predictive power to explain abundances of near-surface pteropod age class and species composition. Gymnosome abundances were largely influenced by increasing adult L. helicina antarctica counts. Changes to pteropod population and community dynamics in response to climate change will have cascading effects throughout Antarctic epipelagic food webs, and these results provide a regional snapshot of patterns in structure and sedimentation from an under-surveyed region of the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Weldrick, CK Makabe, R Mizobata, K Moteki, M Odate, T Takao, S Trebilco, R Swadling, KM |
author_facet |
Weldrick, CK Makabe, R Mizobata, K Moteki, M Odate, T Takao, S Trebilco, R Swadling, KM |
author_sort |
Weldrick, CK |
title |
The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods |
title_short |
The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods |
title_full |
The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods |
title_fullStr |
The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods |
title_full_unstemmed |
The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods |
title_sort |
use of swimmers from sediment traps to measure summer community structure of southern ocean pteropods |
publisher |
Springer-Verlag |
publishDate |
2021 |
url |
https://doi.org/10.1007/s00300-021-02809-4 http://ecite.utas.edu.au/143779 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Limacina helicina Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Limacina helicina Polar Biology Southern Ocean |
op_relation |
http://dx.doi.org/10.1007/s00300-021-02809-4 Weldrick, CK and Makabe, R and Mizobata, K and Moteki, M and Odate, T and Takao, S and Trebilco, R and Swadling, KM, The use of swimmers from sediment traps to measure summer community structure of Southern Ocean pteropods, Polar Biology, 44 pp. 457-472. ISSN 0722-4060 (2021) [Refereed Article] http://ecite.utas.edu.au/143779 |
op_doi |
https://doi.org/10.1007/s00300-021-02809-4 |
container_title |
Polar Biology |
container_volume |
44 |
container_issue |
3 |
container_start_page |
457 |
op_container_end_page |
472 |
_version_ |
1766268572633399296 |