Comparison of Recent and sub-fossil sponge communities of West Antarctica
Sponges comprise a diverse and important benthic invertebrate group in many ecoregions, being a dominating compo nent in the Antarctic communities. Based on two piston cores from the Admiralty Bay, West Antarctica, we isolated the sponge spicules from the sediments and compared the sub-fossil su...
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Institute of Paleobiology PAS
2025-03-01
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| Series: | Acta Palaeontologica Polonica |
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| Online Access: | https://www.app.pan.pl/archive/published/app70/app011662024.pdf |
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| author | MAGDALENA ŁUKOWIAK BASLAVI CÓNDOR-LUJÁN VICTOR CORRÊA SEIXAS ALVARO ARTEAGA LUIS CERPA KATARZYNA ZAREMBA JONATAN AUDYCKI |
| author_facet | MAGDALENA ŁUKOWIAK BASLAVI CÓNDOR-LUJÁN VICTOR CORRÊA SEIXAS ALVARO ARTEAGA LUIS CERPA KATARZYNA ZAREMBA JONATAN AUDYCKI |
| author_sort | MAGDALENA ŁUKOWIAK |
| collection | DOAJ |
| description | Sponges comprise a diverse and important benthic invertebrate group in many ecoregions, being a dominating compo
nent in the Antarctic communities. Based on two piston cores from the Admiralty Bay, West Antarctica, we isolated the
sponge spicules from the sediments and compared the sub-fossil sublittoral sponge assemblage with the Recent sponge
fauna of this area. In addition, we performed statistical analysis to compare the species composition from and within
each core. While no significant shifts in the composition of sponge assemblages along the cores were noticed, our study
revealed a noteworthy distinction between the documented sponge species in the area and those identified based on loose
spicules within the sediment. The sedimentological record appeared to capture more sponge species than identified in
contemporary faunistic studies. Out of the 27 sponge taxa recognized in the sediment, merely seven were confirmed as
presently inhabiting the area. Of the remaining 20 taxa, several were documented in nearby regions such as Maxwell
Bay or South Shetland Islands in general, but 12 species had not been previously recorded in this locality or its adjacent
areas. Conversely, the sediments did not indicate the presence of nine modern species previously reported in this area. We
attribute these discrepancies to various factors, including the potential oversights in recognizing sponges characterized
by small size, fragility, or encrusting habits during faunistic studies. In cases where the certain taxa lack a fossil record,
we suggest that the simplicity of their spicule types made the recognition in sediments challenging. In summary, our
findings underscore that Admiralty Bay remains substantially understudied in terms of sponge species inhabiting this
area, highlighting the need for further comprehensive studies in this region. |
| format | Article |
| id | doaj-art-e3230493782e4c8e9f28ac7e3e14e9a3 |
| institution | DOAJ |
| issn | 1732-2421 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Institute of Paleobiology PAS |
| record_format | Article |
| series | Acta Palaeontologica Polonica |
| spelling | doaj-art-e3230493782e4c8e9f28ac7e3e14e9a32025-08-20T03:11:06ZengInstitute of Paleobiology PASActa Palaeontologica Polonica1732-24212025-03-01701 435610.4202/app.01166.2024Comparison of Recent and sub-fossil sponge communities of West Antarctica MAGDALENA ŁUKOWIAK0https://orcid.org/0000-0002-5282-5341BASLAVI CÓNDOR-LUJÁN1VICTOR CORRÊA SEIXAS2ALVARO ARTEAGA3LUIS CERPA4KATARZYNA ZAREMBA5JONATAN AUDYCKI6 Institute of Paleobiology, Polish Academy of Sciences, ul. Twarda 51/55, 00-818 Warszawa, Poland.Carrera de Bio logía Marina, Facultad de Ciencias Veterinarias y Biológicas, Universidad Científica del Sur, Antigua Panamericana Sur Km. 19, Villa El Salvador, Lima, Peru; Departamento de Zoología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Peru; Carrera de Biología Marina, Facultad de Ciencias Veterinarias y Biológi cas, Universidad Científica del Sur, Antigua Panamericana Sur Km. 19, Villa El Salvador, Lima, Peru.Instituto de Biologia, Depar tamento de Biologia Marinha Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil. Carrera de Biología Marina, Facultad de Ciencias Veterinarias y Biológicas, Universidad Científica del Sur, Antigua Panamericana Sur Km. 19, Villa El Salvador, Lima, Peru. Instituto Geológico, Minero y Meta lúrgico, INGEMMET, Av. Canadá 1470, San Borja, Lima, Peru.Department of Hydrobiology, Faculty of Biology, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland.Institute of Evolutionary Biology, Faculty of Biology, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland. Sponges comprise a diverse and important benthic invertebrate group in many ecoregions, being a dominating compo nent in the Antarctic communities. Based on two piston cores from the Admiralty Bay, West Antarctica, we isolated the sponge spicules from the sediments and compared the sub-fossil sublittoral sponge assemblage with the Recent sponge fauna of this area. In addition, we performed statistical analysis to compare the species composition from and within each core. While no significant shifts in the composition of sponge assemblages along the cores were noticed, our study revealed a noteworthy distinction between the documented sponge species in the area and those identified based on loose spicules within the sediment. The sedimentological record appeared to capture more sponge species than identified in contemporary faunistic studies. Out of the 27 sponge taxa recognized in the sediment, merely seven were confirmed as presently inhabiting the area. Of the remaining 20 taxa, several were documented in nearby regions such as Maxwell Bay or South Shetland Islands in general, but 12 species had not been previously recorded in this locality or its adjacent areas. Conversely, the sediments did not indicate the presence of nine modern species previously reported in this area. We attribute these discrepancies to various factors, including the potential oversights in recognizing sponges characterized by small size, fragility, or encrusting habits during faunistic studies. In cases where the certain taxa lack a fossil record, we suggest that the simplicity of their spicule types made the recognition in sediments challenging. In summary, our findings underscore that Admiralty Bay remains substantially understudied in terms of sponge species inhabiting this area, highlighting the need for further comprehensive studies in this region.https://www.app.pan.pl/archive/published/app70/app011662024.pdfporiferasediment spiculessponge taxonomyadmiralty bayantarcticaholocene |
| spellingShingle | MAGDALENA ŁUKOWIAK BASLAVI CÓNDOR-LUJÁN VICTOR CORRÊA SEIXAS ALVARO ARTEAGA LUIS CERPA KATARZYNA ZAREMBA JONATAN AUDYCKI Comparison of Recent and sub-fossil sponge communities of West Antarctica Acta Palaeontologica Polonica porifera sediment spicules sponge taxonomy admiralty bay antarctica holocene |
| title | Comparison of Recent and sub-fossil sponge communities of West Antarctica |
| title_full | Comparison of Recent and sub-fossil sponge communities of West Antarctica |
| title_fullStr | Comparison of Recent and sub-fossil sponge communities of West Antarctica |
| title_full_unstemmed | Comparison of Recent and sub-fossil sponge communities of West Antarctica |
| title_short | Comparison of Recent and sub-fossil sponge communities of West Antarctica |
| title_sort | comparison of recent and sub fossil sponge communities of west antarctica |
| topic | porifera sediment spicules sponge taxonomy admiralty bay antarctica holocene |
| url | https://www.app.pan.pl/archive/published/app70/app011662024.pdf |
| work_keys_str_mv | AT magdalenałukowiak comparisonofrecentandsubfossilspongecommunitiesofwestantarctica AT baslavicondorlujan comparisonofrecentandsubfossilspongecommunitiesofwestantarctica AT victorcorreaseixas comparisonofrecentandsubfossilspongecommunitiesofwestantarctica AT alvaroarteaga comparisonofrecentandsubfossilspongecommunitiesofwestantarctica AT luiscerpa comparisonofrecentandsubfossilspongecommunitiesofwestantarctica AT katarzynazaremba comparisonofrecentandsubfossilspongecommunitiesofwestantarctica AT jonatanaudycki comparisonofrecentandsubfossilspongecommunitiesofwestantarctica |