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Possible patterns of marine primary productivity during the Great Ordovician Biodiversification Event.

Pohl, Alexandre and Harper, David A. T. and Donnadieu, Yannick and Le Hir, Guillaume and Nardin, Elise and Servais, Thomas (2018) 'Possible patterns of marine primary productivity during the Great Ordovician Biodiversification Event.', Lethaia., 51 (2). pp. 187-197.

Abstract

Following the appearance of numerous animal phyla during the ‘Cambrian Explosion’, the ‘Great Ordovician Biodiversification Event’ (GOBE) records their rapid diversification at the lower taxonomic levels, constituting the most significant rise in biodiversity in Earth's history. Recent studies suggest that the rapid rise in phytoplankton diversity observed at the Cambrian–Ordovician boundary may have profoundly restructured marine trophic chains, paving the way for the subsequent flourishing of plankton-feeding groups during the Ordovician. Unfortunately, the fossil record of plankton is incomplete. Its smaller members represent the bulk of the modern marine biomass, but they are usually not documented in Palaeozoic sediments, preventing any definitive assumption with regard to an eventual correlation between biodiversity and biomass at that time. Here, we use an up-to-date ocean general circulation model with biogeochemical capabilities (MITgcm) to simulate the spatial patterns of marine primary productivity throughout the Ordovician, and we compare the model output with available palaeontological and sedimentological data.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1111/let.12247
Publisher statement:This is the accepted version of the following article: Pohl, A., Harper, D.A.T., Donnadieu, Y., Le Hir, G., Nardin, E. & Servais, T. (2018) Possible patterns of marine primary productivity during the Great Ordovician Biodiversification Event. Lethaia, 51(2): 187-197, which has been published in final form at https://doi.org/10.1111/let.12247. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
Date accepted:18 August 2017
Date deposited:13 October 2017
Date of first online publication:12 October 2017
Date first made open access:12 October 2018

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