The Great Ordovician Biodiversification Event (GOBE): The palaeoecological dimension

Journal article
(Editorial)


Publication Details

Author(s): Servais T, Owen AW, Harper DA, Kröger B, Munnecke A
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology
Publication year: 2010
Volume: 294
Pages range: 99-119
ISSN: 0031-0182
Language: English


Abstract


The 'Great Ordovician Biodiversification Event' (GOBE) saw a spectacular increase in marine biodiversity at all taxonomic levels largely within the phyla established much earlier during the so-called 'Cambrian Explosion'. The diversification was probably the result of a combination of several geological and biological processes and the positive feedbacks resulting from them. The present paper reviews the palaeoecological dimension of the GOBE. It involved major increases in α, ß and γ biodiversity largely associated with the rise of the Paleozoic Evolutionary Fauna dominated by suspension feeders and involving a greater occupation of ecospace and more complex ecological structures in the Ecological Evolutionary Units P1 and P2. In the benthos, these include more complex food webs than those of the Cambrian, greater tiering, especially above the sediment-water interface, and the development of guild structures indicating increased competition between taxa for particular resources. The Ordovician is characterized by a profound change in reef composition, with a switch from microbial-dominated reefs in the Early and Middle Ordovician to metazoan-dominated reefs in the Late Ordovician. Increases in complexity of deep-water trace fossil assemblages began in the Early Ordovician and mark the increasing exploitation in that environment and the development of hardgrounds permitted bioerosion and encrusting strategies together with the appearance of cryptic communities.Within the water column, the GOBE involved a significant increase in the diversity of the phytoplankton and the development of a diverse zooplankton (including planktotrophic larvae from a range of invertebrate clades). This revolution in the plankton enabled the establishment of a diverse fauna of pelagic vertebrates, molluscs and arthropods and promoted the rise of suspension feeders in the benthos. An escalation amongst predators and thus community evolution may also have been a major driver of biodiversification. © 2010 Elsevier B.V.


FAU Authors / FAU Editors

Munnecke, Axel Prof. Dr.
Professur für Paläontologie (Schwerpunkt Faziesanalyse)


External institutions
Durham University
Helsingin yliopisto / University of Helsinki
LILLE 1 University - Science and Technology
University of Glasgow


How to cite

APA:
Servais, T., Owen, A.W., Harper, D.A., Kröger, B., & Munnecke, A. (2010). The Great Ordovician Biodiversification Event (GOBE): The palaeoecological dimension. Palaeogeography, Palaeoclimatology, Palaeoecology, 294, 99-119. https://dx.doi.org/10.1016/j.palaeo.2010.05.031

MLA:
Servais, Thomas, et al. "The Great Ordovician Biodiversification Event (GOBE): The palaeoecological dimension." Palaeogeography, Palaeoclimatology, Palaeoecology 294 (2010): 99-119.

BibTeX: 

Last updated on 2018-14-12 at 09:18