New insights into Silurian–Devonian palaeophytogeography

Capel, Eliott; Cleal, Christopher; Servais, Thomas; Cascales Minana, Francisco De Borja

Type de document :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1016/j.palaeo.2023.111393

Titre :

New insights into Silurian–Devonian palaeophytogeography

Auteur(s) :

Capel, Eliott [Auteur correspondant]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Cleal, Christopher [Auteur]
University of Bristol [Bristol]
Servais, Thomas [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Cascales Minana, Francisco De Borja [Directeur de publication]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]

Titre de la revue :

Palaeogeography, Palaeoclimatology, Palaeoecology

Pagination :

111393

Éditeur :

Elsevier

Date de publication :

2023-03-01

ISSN :

0031-0182

Mot(s)-clé(s) en anglais :

Devonian Palaeophytogeography Phytochoria Plant macrofossils Silurian

Discipline(s) HAL :

Planète et Univers [physics]/Sciences de la Terre/Paléontologie

Résumé en anglais : [en]

The Silurian-Devonian plant radiation was an event triggered by the progressive colonization of subaerial habitats. Nevertheless, it is still unclear whether this radiation was globally uniform or whether alternative ...
Lire la suite >The Silurian-Devonian plant radiation was an event triggered by the progressive colonization of subaerial habitats. Nevertheless, it is still unclear whether this radiation was globally uniform or whether alternative diversification scenarios emerged depending on the geographical context. Here, we report on early land plant diversity patterns across different previously defined palaeogeographical units (i.e., Laurussia, Siberia, Kazakhstania, NE, NW and South Gondwana). Results reveal apparent diachronous events of diversification and extinction partly resulting from uneven sampling effort, especially in Gondwana. Global diversity patterns are most similar to the Laurussian curve suggesting that the observed global dynamics are mostly controlled by the historically best-sampled continents. Nevertheless, changes in floral composition through time become less prone to sampling biases, and reveal geographical disparities that indicate a non-random distribution of the Silurian-Devonian vegetation. Consequently, we further performed a set of multivariate analyses to revisit the palaeophytogeographical signal through four time-intervals (i.e., Silurian-Lochkovian, Pragian-Emsian, Middle and Late Devonian), which revealed that spatial differentiation of vegetation was mainly controlled by climatic conditions and to a lesser extent geographical barriers. Most importantly, we find the maximum provincialism during cooler periods such as during the Silurian-Lochkovian and Middle Devonian, whilst warmer periods (Pragian-Emsian and Late Devonian) coincided with increased cosmopolitanism among early land plants.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Projet ANR :

Comprendre le verdissement de la Terre primitive

Collections :