The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland
Spionid polychaetes within the genus Marenzelleria are common inhabitants of organically enriched sediments in the Northern hemisphere. The species M. viridis has unique ventilation behaviors that create dynamic, fluctuating oxygen conditions in sediments, enhancing sulfate reduction. These behaviou...
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Memorial University of Newfoundland
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ftmemorialuniv:oai:research.library.mun.ca:11953 2023-10-01T03:57:33+02:00 The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland Green, Samantha 2015-10 application/pdf https://research.library.mun.ca/11953/ https://research.library.mun.ca/11953/1/thesis.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/11953/1/thesis.pdf Green, Samantha <https://research.library.mun.ca/view/creator_az/Green=3ASamantha=3A=3A.html> (2015) The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland. Masters thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 2015 ftmemorialuniv 2023-09-03T06:48:31Z Spionid polychaetes within the genus Marenzelleria are common inhabitants of organically enriched sediments in the Northern hemisphere. The species M. viridis has unique ventilation behaviors that create dynamic, fluctuating oxygen conditions in sediments, enhancing sulfate reduction. These behaviours may have negative effects on other macrofauna and positive effects on sulfur bacteria. A Marenzelleria species recently sampled in Newfoundland is here identified as M. viridis, and its abundance correlates little with abiotic factors and macrofaunal community composition at examined sites. Various types of surrounding sediments (oxic and suboxic as well as M. viridis burrow linings) contained surprisingly similar total prokaryotic, sulfate reducing and sulfur oxidizing bacteria numbers. The high abundance of sedimentary prokaryotes, combined with the stable isotopic composition of M. viridis tissues and lack of obvious symbionts, suggest that, thanks to its ventilation behaviour, this species may “farm” sulfur bacteria in sediments and use them as a primary food source. Thesis Newfoundland Memorial University of Newfoundland: Research Repository |
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Memorial University of Newfoundland: Research Repository |
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Spionid polychaetes within the genus Marenzelleria are common inhabitants of organically enriched sediments in the Northern hemisphere. The species M. viridis has unique ventilation behaviors that create dynamic, fluctuating oxygen conditions in sediments, enhancing sulfate reduction. These behaviours may have negative effects on other macrofauna and positive effects on sulfur bacteria. A Marenzelleria species recently sampled in Newfoundland is here identified as M. viridis, and its abundance correlates little with abiotic factors and macrofaunal community composition at examined sites. Various types of surrounding sediments (oxic and suboxic as well as M. viridis burrow linings) contained surprisingly similar total prokaryotic, sulfate reducing and sulfur oxidizing bacteria numbers. The high abundance of sedimentary prokaryotes, combined with the stable isotopic composition of M. viridis tissues and lack of obvious symbionts, suggest that, thanks to its ventilation behaviour, this species may “farm” sulfur bacteria in sediments and use them as a primary food source. |
format |
Thesis |
author |
Green, Samantha |
spellingShingle |
Green, Samantha The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland |
author_facet |
Green, Samantha |
author_sort |
Green, Samantha |
title |
The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland |
title_short |
The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland |
title_full |
The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland |
title_fullStr |
The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland |
title_full_unstemmed |
The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland |
title_sort |
diet and influence of the spionid polychaete marenzelleria on benthic communities in coastal newfoundland |
publisher |
Memorial University of Newfoundland |
publishDate |
2015 |
url |
https://research.library.mun.ca/11953/ https://research.library.mun.ca/11953/1/thesis.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
https://research.library.mun.ca/11953/1/thesis.pdf Green, Samantha <https://research.library.mun.ca/view/creator_az/Green=3ASamantha=3A=3A.html> (2015) The diet and influence of the spionid polychaete Marenzelleria on benthic communities in coastal Newfoundland. Masters thesis, Memorial University of Newfoundland. |
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thesis_license |
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1778529037677756416 |