Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard
This first comprehensive investigation of microbioerosion traces in polar barnacles addresses two bathymetrical transects from the intertidal down to subtidal water depths in two different carbonate factories in the Svalbard Archipelago: the bay Mosselbukta and the ocean bank Bjørnøy-Banken. Scannin...
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Norwegian Polar Institute
2020
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ftdoajarticles:oai:doaj.org/article:301363987ab14e6ab30fcc8442953e54 2023-05-15T15:10:26+02:00 Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard Neele Meyer Max Wisshak André Freiwald 2020-09-01T00:00:00Z https://doi.org/10.33265/polar.v39.3766 https://doaj.org/article/301363987ab14e6ab30fcc8442953e54 EN eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3766/11195 https://doaj.org/toc/1751-8369 1751-8369 doi:10.33265/polar.v39.3766 https://doaj.org/article/301363987ab14e6ab30fcc8442953e54 Polar Research, Vol 39, Iss 0, Pp 1-18 (2020) bioerosion ichnotaxonomy ichnodisparity arctic mosselbukta bjørnøy-banken Environmental sciences GE1-350 Oceanography GC1-1581 article 2020 ftdoajarticles https://doi.org/10.33265/polar.v39.3766 2022-12-30T23:46:44Z This first comprehensive investigation of microbioerosion traces in polar barnacles addresses two bathymetrical transects from the intertidal down to subtidal water depths in two different carbonate factories in the Svalbard Archipelago: the bay Mosselbukta and the ocean bank Bjørnøy-Banken. Scanning electron microscopy of epoxy resin casts of barnacle shells yielded 20 different microendolithic bioerosion traces, probably produced by cyanobacteria (three), chlorophytes (two), rhodophytes (one), sponges (one), foraminifera (three), fungi (nine) and bacteria (one). The lowest ichnodiversity in both locations was observed in the shallow euphotic zone and is likely a result of strong temperature fluctuations, extreme seasonality of light levels and episodic sea-ice cover. At 25–150 m water depth, the ichnodiversity remains relatively constant (9–13 ichnospecies), albeit with differing ichnospecies composition, generally dominated by borings from chlorophytes and fungi. Ichnotaxa at Mosselbukta and Bjørnøy-Banken were similar in numbers but differed in abundance and slightly also in ichnospecies composition. Statistical tests indicate that water depth (affecting the availability of light) is the most significant driver for the development of different microbioerosion trace assemblages across the bathymetrical transects. In contrast, no significant differences in ichnodisparity were found, indicating a comparable suite of architectural designs of the micro-borings throughout bathymetry and location. The comparison of our results with literature data confirms a decrease in ichnodiversity from lower to higher latitudes, although targeted bioerosion analyses from other polar environments are needed to gain a more complete picture of the role of bioerosion in polar carbonate factories. Article in Journal/Newspaper Arctic Foraminifera* Polar Research Sea ice Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Svalbard Archipelago Banken ENVELOPE(25.108,25.108,70.963,70.963) Mosselbukta ENVELOPE(15.955,15.955,79.891,79.891) Bjørnøy ENVELOPE(18.167,18.167,69.767,69.767) Polar Research 39 0 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
bioerosion ichnotaxonomy ichnodisparity arctic mosselbukta bjørnøy-banken Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
bioerosion ichnotaxonomy ichnodisparity arctic mosselbukta bjørnøy-banken Environmental sciences GE1-350 Oceanography GC1-1581 Neele Meyer Max Wisshak André Freiwald Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard |
topic_facet |
bioerosion ichnotaxonomy ichnodisparity arctic mosselbukta bjørnøy-banken Environmental sciences GE1-350 Oceanography GC1-1581 |
description |
This first comprehensive investigation of microbioerosion traces in polar barnacles addresses two bathymetrical transects from the intertidal down to subtidal water depths in two different carbonate factories in the Svalbard Archipelago: the bay Mosselbukta and the ocean bank Bjørnøy-Banken. Scanning electron microscopy of epoxy resin casts of barnacle shells yielded 20 different microendolithic bioerosion traces, probably produced by cyanobacteria (three), chlorophytes (two), rhodophytes (one), sponges (one), foraminifera (three), fungi (nine) and bacteria (one). The lowest ichnodiversity in both locations was observed in the shallow euphotic zone and is likely a result of strong temperature fluctuations, extreme seasonality of light levels and episodic sea-ice cover. At 25–150 m water depth, the ichnodiversity remains relatively constant (9–13 ichnospecies), albeit with differing ichnospecies composition, generally dominated by borings from chlorophytes and fungi. Ichnotaxa at Mosselbukta and Bjørnøy-Banken were similar in numbers but differed in abundance and slightly also in ichnospecies composition. Statistical tests indicate that water depth (affecting the availability of light) is the most significant driver for the development of different microbioerosion trace assemblages across the bathymetrical transects. In contrast, no significant differences in ichnodisparity were found, indicating a comparable suite of architectural designs of the micro-borings throughout bathymetry and location. The comparison of our results with literature data confirms a decrease in ichnodiversity from lower to higher latitudes, although targeted bioerosion analyses from other polar environments are needed to gain a more complete picture of the role of bioerosion in polar carbonate factories. |
format |
Article in Journal/Newspaper |
author |
Neele Meyer Max Wisshak André Freiwald |
author_facet |
Neele Meyer Max Wisshak André Freiwald |
author_sort |
Neele Meyer |
title |
Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard |
title_short |
Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard |
title_full |
Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard |
title_fullStr |
Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard |
title_full_unstemmed |
Ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of Svalbard |
title_sort |
ichnodiversity and bathymetric range of microbioerosion traces in polar barnacles of svalbard |
publisher |
Norwegian Polar Institute |
publishDate |
2020 |
url |
https://doi.org/10.33265/polar.v39.3766 https://doaj.org/article/301363987ab14e6ab30fcc8442953e54 |
long_lat |
ENVELOPE(25.108,25.108,70.963,70.963) ENVELOPE(15.955,15.955,79.891,79.891) ENVELOPE(18.167,18.167,69.767,69.767) |
geographic |
Arctic Svalbard Svalbard Archipelago Banken Mosselbukta Bjørnøy |
geographic_facet |
Arctic Svalbard Svalbard Archipelago Banken Mosselbukta Bjørnøy |
genre |
Arctic Foraminifera* Polar Research Sea ice Svalbard |
genre_facet |
Arctic Foraminifera* Polar Research Sea ice Svalbard |
op_source |
Polar Research, Vol 39, Iss 0, Pp 1-18 (2020) |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3766/11195 https://doaj.org/toc/1751-8369 1751-8369 doi:10.33265/polar.v39.3766 https://doaj.org/article/301363987ab14e6ab30fcc8442953e54 |
op_doi |
https://doi.org/10.33265/polar.v39.3766 |
container_title |
Polar Research |
container_volume |
39 |
container_issue |
0 |
_version_ |
1766341469459709952 |