Perspectives on the Great Ordovician Biodiversification Event - local to global patterns
Biodiversity on Earth has seen many increases and decreases throughout its history. Unrevealing these changes is crucial for understanding mechanisms and dissecting principles behind diversification and extinction events. One of the largest increases in biodiversity throughout the Earth’s history ha...
Published in: | Paleobiology |
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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2020
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Online Access: | http://hdl.handle.net/10852/79941 http://urn.nb.no/URN:NBN:no-83041 |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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English |
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Biodiversity on Earth has seen many increases and decreases throughout its history. Unrevealing these changes is crucial for understanding mechanisms and dissecting principles behind diversification and extinction events. One of the largest increases in biodiversity throughout the Earth’s history happened around 467 million years ago: the Great Ordovician Biodiversification Event (GOBE). This thesis provides new insights into the GOBE from global, regional, and local perspectives. Paper I quantifies global, Baltic, Laurentian, and onshore-offshore diversification dynamics. Results indicate that origination rates peaked at the Dapingian/ Darriwilian boundary. While both origination and extinction rates appear to be greater in Baltica than in Laurentia, there is no evidence that diversification dynamics were different when comparing onshore and offshore areas. Paper II examines if origination rates are greater for hard substrate taxa prior to the GOBE, as suggested, but not formally tested, by previous studies. Results provide evidence that this may be the case for attaching echinoderms and bryozoans. In paper III the focus is set on faunal shifts within two disparate Ordovician sections. One of them spans the GOBE, while the other one was deposited prior to the GOBE. Results show that shifts in faunal compositions happened across the GOBE section, in contrast to no faunal shifts in the pre-GOBE section. Paper IV zooms out and focuses on biodiversity accumulation over the entire Early Palaeozoic, and examines diversification dynamics and genus longevities. Results show that genera underwent greater turnover in the Cambrian compared to the Ordovician, and that genus longevities increased from c. 5 million years to c. 10 million years between these two periods. Paper V is a geological, and sequence stratigraphic description of an Early to Middle Ordovician section in Ny Friesland, Svalbard, Norway, and provides the basis for Paper III. |
format |
Doctoral or Postdoctoral Thesis |
author |
Franeck, Franziska |
spellingShingle |
Franeck, Franziska Perspectives on the Great Ordovician Biodiversification Event - local to global patterns |
author_facet |
Franeck, Franziska |
author_sort |
Franeck, Franziska |
title |
Perspectives on the Great Ordovician Biodiversification Event - local to global patterns |
title_short |
Perspectives on the Great Ordovician Biodiversification Event - local to global patterns |
title_full |
Perspectives on the Great Ordovician Biodiversification Event - local to global patterns |
title_fullStr |
Perspectives on the Great Ordovician Biodiversification Event - local to global patterns |
title_full_unstemmed |
Perspectives on the Great Ordovician Biodiversification Event - local to global patterns |
title_sort |
perspectives on the great ordovician biodiversification event - local to global patterns |
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2020 |
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http://hdl.handle.net/10852/79941 http://urn.nb.no/URN:NBN:no-83041 |
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ENVELOPE(16.847,16.847,79.498,79.498) |
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Norway Ny Friesland Svalbard |
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Norway Ny Friesland Svalbard |
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Arctic Ny Friesland Svalbard |
genre_facet |
Arctic Ny Friesland Svalbard |
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Paper I Franeck, F. and Liow, L. H. ‘Dissecting the paleocontinental and paleoenvironmental dynamics of the great Ordovician biodiversification’. In: Paleobiology 45(2) (2019), pp. 221–234. DOI:10.1017/pab.2019.4. The paper is included in the thesis, and also available at: https://doi.org/10.1017/pab.2019.4 Paper II Franeck, F. and Liow, L. H. ‘Did hard substrate taxa diversify prior to the Great Ordovician Biodiversification Event?’. In: Palaeontology (2020), pp. 1-13. DOI:10.1111/pala.12489 The paper is included in the thesis, and also available at: https://doi.org/10.1111/pala.12489 Paper III Franeck, F. ‘Quantification of faunal shifts in two Early to Middle Ordovician sections in Spitsbergen, Arctic Norway, and Utah, USA, by using occupancy modelling’. Manuscript. To be published. The paper is not available in DUO awaiting publishing. Paper IV Kröger, B. and Franeck, F. and Rasmussen, C. M. Ø. ´The evolutionary dynamics of the early Palaeozoic marine biodiversity accumulation’. In: Proceedings B 286 (2019), pp. 20191634. DOI:10.1098/rspb.2019.1634 The paper is included in the thesis, and also available at: https://doi.org/10.1098/rspb.2019.1634 Paper V Kröger, B. and Finnegan, S. and Franeck, F. and Hopkins, M. ´The Ordovician succession adjacent to Hinlopenstretet, Ny Friesland, Spitsbergen’. In: American Museum Novitates (2017), pp. 1-28. DOI:10.1206/3882.1 The paper is included in the thesis, and also available at: https://doi.org/10.1206/3882.1 https://doi.org/10.1017/pab.2019.4 https://doi.org/10.1111/pala.12489 https://doi.org/10.1098/rspb.2019.1634 https://doi.org/10.1206/3882.1 http://urn.nb.no/URN:NBN:no-83041 http://hdl.handle.net/10852/79941 URN:NBN:no-83041 Fulltext https://www.duo.uio.no/bitstream/handle/10852/79941/1/PhD-Franeck-DUO.pdf |
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https://doi.org/10.1017/pab.2019.4 https://doi.org/10.1111/pala.12489 https://doi.org/10.1098/rspb.2019.1634 https://doi.org/10.1206/3882.1 |
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ftoslouniv:oai:www.duo.uio.no:10852/79941 2023-05-15T14:28:15+02:00 Perspectives on the Great Ordovician Biodiversification Event - local to global patterns Franeck, Franziska 2020 http://hdl.handle.net/10852/79941 http://urn.nb.no/URN:NBN:no-83041 en eng Paper I Franeck, F. and Liow, L. H. ‘Dissecting the paleocontinental and paleoenvironmental dynamics of the great Ordovician biodiversification’. In: Paleobiology 45(2) (2019), pp. 221–234. DOI:10.1017/pab.2019.4. The paper is included in the thesis, and also available at: https://doi.org/10.1017/pab.2019.4 Paper II Franeck, F. and Liow, L. H. ‘Did hard substrate taxa diversify prior to the Great Ordovician Biodiversification Event?’. In: Palaeontology (2020), pp. 1-13. DOI:10.1111/pala.12489 The paper is included in the thesis, and also available at: https://doi.org/10.1111/pala.12489 Paper III Franeck, F. ‘Quantification of faunal shifts in two Early to Middle Ordovician sections in Spitsbergen, Arctic Norway, and Utah, USA, by using occupancy modelling’. Manuscript. To be published. The paper is not available in DUO awaiting publishing. Paper IV Kröger, B. and Franeck, F. and Rasmussen, C. M. Ø. ´The evolutionary dynamics of the early Palaeozoic marine biodiversity accumulation’. In: Proceedings B 286 (2019), pp. 20191634. DOI:10.1098/rspb.2019.1634 The paper is included in the thesis, and also available at: https://doi.org/10.1098/rspb.2019.1634 Paper V Kröger, B. and Finnegan, S. and Franeck, F. and Hopkins, M. ´The Ordovician succession adjacent to Hinlopenstretet, Ny Friesland, Spitsbergen’. In: American Museum Novitates (2017), pp. 1-28. DOI:10.1206/3882.1 The paper is included in the thesis, and also available at: https://doi.org/10.1206/3882.1 https://doi.org/10.1017/pab.2019.4 https://doi.org/10.1111/pala.12489 https://doi.org/10.1098/rspb.2019.1634 https://doi.org/10.1206/3882.1 http://urn.nb.no/URN:NBN:no-83041 http://hdl.handle.net/10852/79941 URN:NBN:no-83041 Fulltext https://www.duo.uio.no/bitstream/handle/10852/79941/1/PhD-Franeck-DUO.pdf Doctoral thesis Doktoravhandling 2020 ftoslouniv https://doi.org/10.1017/pab.2019.4 https://doi.org/10.1111/pala.12489 https://doi.org/10.1098/rspb.2019.1634 https://doi.org/10.1206/3882.1 2020-09-30T22:30:10Z Biodiversity on Earth has seen many increases and decreases throughout its history. Unrevealing these changes is crucial for understanding mechanisms and dissecting principles behind diversification and extinction events. One of the largest increases in biodiversity throughout the Earth’s history happened around 467 million years ago: the Great Ordovician Biodiversification Event (GOBE). This thesis provides new insights into the GOBE from global, regional, and local perspectives. Paper I quantifies global, Baltic, Laurentian, and onshore-offshore diversification dynamics. Results indicate that origination rates peaked at the Dapingian/ Darriwilian boundary. While both origination and extinction rates appear to be greater in Baltica than in Laurentia, there is no evidence that diversification dynamics were different when comparing onshore and offshore areas. Paper II examines if origination rates are greater for hard substrate taxa prior to the GOBE, as suggested, but not formally tested, by previous studies. Results provide evidence that this may be the case for attaching echinoderms and bryozoans. In paper III the focus is set on faunal shifts within two disparate Ordovician sections. One of them spans the GOBE, while the other one was deposited prior to the GOBE. Results show that shifts in faunal compositions happened across the GOBE section, in contrast to no faunal shifts in the pre-GOBE section. Paper IV zooms out and focuses on biodiversity accumulation over the entire Early Palaeozoic, and examines diversification dynamics and genus longevities. Results show that genera underwent greater turnover in the Cambrian compared to the Ordovician, and that genus longevities increased from c. 5 million years to c. 10 million years between these two periods. Paper V is a geological, and sequence stratigraphic description of an Early to Middle Ordovician section in Ny Friesland, Svalbard, Norway, and provides the basis for Paper III. Doctoral or Postdoctoral Thesis Arctic Ny Friesland Svalbard Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway Ny Friesland ENVELOPE(16.847,16.847,79.498,79.498) Svalbard Paleobiology 45 02 221 234 |