Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patterns
Studies of marine microbioerosion in polar environments are scarce. They include our recent investigations of bioerosion traces preserved in sessile balanid skeletons from the Arctic Svalbard archipelago and the Antarctic Ross Sea. Here, we present results from a third study site, Frobisher Bay, in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Norwegian Polar Institute
2022-04-01
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| Series: | Polar Research |
| Subjects: | |
| Online Access: | https://polarresearch.net/index.php/polar/article/view/8083/14529 |
| _version_ | 1811257229644398592 |
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| author | Neele Meyer Max Wisshak Evan N. Edinger Kumiko Azetsu-Scott André Freiwald |
| author_facet | Neele Meyer Max Wisshak Evan N. Edinger Kumiko Azetsu-Scott André Freiwald |
| author_sort | Neele Meyer |
| collection | DOAJ |
| description | Studies of marine microbioerosion in polar environments are scarce. They include our recent investigations of bioerosion traces preserved in sessile balanid skeletons from the Arctic Svalbard archipelago and the Antarctic Ross Sea. Here, we present results from a third study site, Frobisher Bay, in the eastern Canadian Arctic, together with a synthesis of our current knowledge of polar bioerosion in both hemispheres. Barnacles from 62 to 94 m water depth in Frobisher Bay were prepared using the cast-embedding technique to enable visualization of microboring traces by scanning electron microscopy. In total, six ichnotaxa of traces produced by organotrophic bioeroders were found. All recorded ichnotaxa were also present in Mosselbukta, Svalbard, and most in the Ross Sea. Frobisher Bay contrasts with Mosselbukta in that it is a siliciclastic-dominated environment and shows a lower ichnodiversity, which may be accounted for by the limited bathymetrical range and a high turbidity and sedimentation rate. We evaluate potential key ichnotaxa for the cold-temperate and polar regions, of which the most suitable are Flagrichnus baiulus and Saccomorpha guttulata, and propose adapted index ichnocoenoses for the interpretation of palaeobathymetry accordingly. Together, the three studies allow us to make provisional considerations about the biogeographical distribution of polar microbioerosion traces reflecting the ecophysiological limits of their makers. |
| first_indexed | 2024-04-12T17:53:13Z |
| format | Article |
| id | doaj.art-ee0a5bf3f277472887a9203715f23409 |
| institution | Directory Open Access Journal |
| issn | 0800-0395 1751-8369 |
| language | English |
| last_indexed | 2024-04-12T17:53:13Z |
| publishDate | 2022-04-01 |
| publisher | Norwegian Polar Institute |
| record_format | Article |
| series | Polar Research |
| spelling | doaj.art-ee0a5bf3f277472887a9203715f234092022-12-22T03:22:26ZengNorwegian Polar InstitutePolar Research0800-03951751-83692022-04-014111510.33265/polar.v41.80838083Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patternsNeele Meyer0Max Wisshak1Evan N. Edinger2Kumiko Azetsu-Scott3André Freiwald4Faculty of Geosciences, University of Bremen, Bremen, GermanySenckenberg am Meer, Marine Research Department, Wilhelmshaven, GermanyDepartment of Geography, Memorial University of Newfoundland, St. John’s, CanadaFisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, CanadaFaculty of Geosciences, University of Bremen, Bremen, GermanyStudies of marine microbioerosion in polar environments are scarce. They include our recent investigations of bioerosion traces preserved in sessile balanid skeletons from the Arctic Svalbard archipelago and the Antarctic Ross Sea. Here, we present results from a third study site, Frobisher Bay, in the eastern Canadian Arctic, together with a synthesis of our current knowledge of polar bioerosion in both hemispheres. Barnacles from 62 to 94 m water depth in Frobisher Bay were prepared using the cast-embedding technique to enable visualization of microboring traces by scanning electron microscopy. In total, six ichnotaxa of traces produced by organotrophic bioeroders were found. All recorded ichnotaxa were also present in Mosselbukta, Svalbard, and most in the Ross Sea. Frobisher Bay contrasts with Mosselbukta in that it is a siliciclastic-dominated environment and shows a lower ichnodiversity, which may be accounted for by the limited bathymetrical range and a high turbidity and sedimentation rate. We evaluate potential key ichnotaxa for the cold-temperate and polar regions, of which the most suitable are Flagrichnus baiulus and Saccomorpha guttulata, and propose adapted index ichnocoenoses for the interpretation of palaeobathymetry accordingly. Together, the three studies allow us to make provisional considerations about the biogeographical distribution of polar microbioerosion traces reflecting the ecophysiological limits of their makers.https://polarresearch.net/index.php/polar/article/view/8083/14529ichnotaxatrace fossil assemblagepolar environmentantarcticichnocoenosesbarnacles |
| spellingShingle | Neele Meyer Max Wisshak Evan N. Edinger Kumiko Azetsu-Scott André Freiwald Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patterns Polar Research ichnotaxa trace fossil assemblage polar environment antarctic ichnocoenoses barnacles |
| title | Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patterns |
| title_full | Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patterns |
| title_fullStr | Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patterns |
| title_full_unstemmed | Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patterns |
| title_short | Ichnodiversity in the eastern Canadian Arctic in the context of polar microbioerosion patterns |
| title_sort | ichnodiversity in the eastern canadian arctic in the context of polar microbioerosion patterns |
| topic | ichnotaxa trace fossil assemblage polar environment antarctic ichnocoenoses barnacles |
| url | https://polarresearch.net/index.php/polar/article/view/8083/14529 |
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