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

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Servais T, Owen AW, Harper DA, Kröger B, Munnecke A
Zeitschrift: Palaeogeography, Palaeoclimatology, Palaeoecology
Jahr der Veröffentlichung: 2010
Band: 294
Seitenbereich: 99-119
ISSN: 0031-0182
Sprache: Englisch


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-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

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

Einrichtungen weiterer Autorinnen und Autoren

Durham University
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Forschungsschwerpunkt einer Fakultät: Naturwissenschaftliche Fakultät


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.

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


Zuletzt aktualisiert 2018-14-12 um 09:18