Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf
Predator-prey interactions in marine ecosystems control population sizes, maintain species richness, and provide intermediate disturbance. Such ecosystem structuring interactions may be rare in Antarctic epibenthic communities, which are unique among marine ecosystems worldwide for their dominance o...
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Online Access: | https://doi.org/10.3389/fmars.2024.1408828.s006 https://figshare.com/articles/presentation/Presentation_1_Network_analyses_on_photographic_surveys_reveal_that_invertebrate_predators_do_not_structure_epibenthos_in_the_deep_2000m_rocky_Powell_Basin_Weddell_Sea_Antarctica_pdf/26143486 |
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ftfrontimediafig:oai:figshare.com:article/26143486 2024-09-15T17:43:37+00:00 Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf Tasnuva Ming Khan Huw J. Griffiths Rowan J. Whittle Nile P. Stephenson Katie M. Delahooke Autun Purser Andrea Manica Emily G. Mitchell 2024-07-02T04:15:22Z https://doi.org/10.3389/fmars.2024.1408828.s006 https://figshare.com/articles/presentation/Presentation_1_Network_analyses_on_photographic_surveys_reveal_that_invertebrate_predators_do_not_structure_epibenthos_in_the_deep_2000m_rocky_Powell_Basin_Weddell_Sea_Antarctica_pdf/26143486 unknown doi:10.3389/fmars.2024.1408828.s006 https://figshare.com/articles/presentation/Presentation_1_Network_analyses_on_photographic_surveys_reveal_that_invertebrate_predators_do_not_structure_epibenthos_in_the_deep_2000m_rocky_Powell_Basin_Weddell_Sea_Antarctica_pdf/26143486 CC BY 4.0 Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering photographic survey ecological network predator-prey interaction community composition Antarctic Peninsula starfish Text Presentation 2024 ftfrontimediafig https://doi.org/10.3389/fmars.2024.1408828.s006 2024-08-19T06:19:43Z Predator-prey interactions in marine ecosystems control population sizes, maintain species richness, and provide intermediate disturbance. Such ecosystem structuring interactions may be rare in Antarctic epibenthic communities, which are unique among marine ecosystems worldwide for their dominance of soft bodied fauna (sponges, soft and hard corals, and echinoderms) and a simultaneous paucity of shell crushing predators (sharks, rays and durophagous decapods). In the shallow benthos, instead of durophagy, important Antarctic predators such as starfish, pycnogonids (sea spiders), nemertean worms, and nudibranchs employ grazing, scavenging, or sucking strategies. Far less is known about deep sea (>1000 m) Antarctic benthic communities due to the challenging nature of polar data collection, so that photographic surveys provide one of the only means of making in situ observations of these deep sea communities. We used seabed photographs of the deep (~2000m) slope of the Powell Basin, northwest Weddell Sea, taken by the Ocean Floor Observation and Bathymetry System on board the RV Polarstern (PS118, April 2019) to investigate the epibenthic community composition, and Bayesian Network Inference (BNI) to determine the ecological network, namely the ecological associations, including potential invertebrate predator-prey relationships between taxa. Photographs show that the rocky substrates of the basin slope support between 10-22 morphotaxa per photo, and highly abundant communities (density between 106 to 553 individuals/m 2 ). BNI results reveal a network of associations between the sessile and mobile suspension and filter feeding organisms and their physical environment. However, associations between invertebrate predators like starfish, and other organisms, were not detected in the network. This lack of inclusion within the network suggests that, despite the presence of these normally important mobile predators, invertebrate predator-prey interactions on the rocky Powell Basin slope do not have the same ... Conference Object Antarc* Antarctic Antarctic Peninsula Weddell Sea Frontiers: Figshare |
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Open Polar |
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Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering photographic survey ecological network predator-prey interaction community composition Antarctic Peninsula starfish |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering photographic survey ecological network predator-prey interaction community composition Antarctic Peninsula starfish Tasnuva Ming Khan Huw J. Griffiths Rowan J. Whittle Nile P. Stephenson Katie M. Delahooke Autun Purser Andrea Manica Emily G. Mitchell Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering photographic survey ecological network predator-prey interaction community composition Antarctic Peninsula starfish |
description |
Predator-prey interactions in marine ecosystems control population sizes, maintain species richness, and provide intermediate disturbance. Such ecosystem structuring interactions may be rare in Antarctic epibenthic communities, which are unique among marine ecosystems worldwide for their dominance of soft bodied fauna (sponges, soft and hard corals, and echinoderms) and a simultaneous paucity of shell crushing predators (sharks, rays and durophagous decapods). In the shallow benthos, instead of durophagy, important Antarctic predators such as starfish, pycnogonids (sea spiders), nemertean worms, and nudibranchs employ grazing, scavenging, or sucking strategies. Far less is known about deep sea (>1000 m) Antarctic benthic communities due to the challenging nature of polar data collection, so that photographic surveys provide one of the only means of making in situ observations of these deep sea communities. We used seabed photographs of the deep (~2000m) slope of the Powell Basin, northwest Weddell Sea, taken by the Ocean Floor Observation and Bathymetry System on board the RV Polarstern (PS118, April 2019) to investigate the epibenthic community composition, and Bayesian Network Inference (BNI) to determine the ecological network, namely the ecological associations, including potential invertebrate predator-prey relationships between taxa. Photographs show that the rocky substrates of the basin slope support between 10-22 morphotaxa per photo, and highly abundant communities (density between 106 to 553 individuals/m 2 ). BNI results reveal a network of associations between the sessile and mobile suspension and filter feeding organisms and their physical environment. However, associations between invertebrate predators like starfish, and other organisms, were not detected in the network. This lack of inclusion within the network suggests that, despite the presence of these normally important mobile predators, invertebrate predator-prey interactions on the rocky Powell Basin slope do not have the same ... |
format |
Conference Object |
author |
Tasnuva Ming Khan Huw J. Griffiths Rowan J. Whittle Nile P. Stephenson Katie M. Delahooke Autun Purser Andrea Manica Emily G. Mitchell |
author_facet |
Tasnuva Ming Khan Huw J. Griffiths Rowan J. Whittle Nile P. Stephenson Katie M. Delahooke Autun Purser Andrea Manica Emily G. Mitchell |
author_sort |
Tasnuva Ming Khan |
title |
Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf |
title_short |
Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf |
title_full |
Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf |
title_fullStr |
Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf |
title_full_unstemmed |
Presentation_1_Network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky Powell Basin, Weddell Sea, Antarctica.pdf |
title_sort |
presentation_1_network analyses on photographic surveys reveal that invertebrate predators do not structure epibenthos in the deep (~2000m) rocky powell basin, weddell sea, antarctica.pdf |
publishDate |
2024 |
url |
https://doi.org/10.3389/fmars.2024.1408828.s006 https://figshare.com/articles/presentation/Presentation_1_Network_analyses_on_photographic_surveys_reveal_that_invertebrate_predators_do_not_structure_epibenthos_in_the_deep_2000m_rocky_Powell_Basin_Weddell_Sea_Antarctica_pdf/26143486 |
genre |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
op_relation |
doi:10.3389/fmars.2024.1408828.s006 https://figshare.com/articles/presentation/Presentation_1_Network_analyses_on_photographic_surveys_reveal_that_invertebrate_predators_do_not_structure_epibenthos_in_the_deep_2000m_rocky_Powell_Basin_Weddell_Sea_Antarctica_pdf/26143486 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fmars.2024.1408828.s006 |
_version_ |
1810490654778720256 |