The climate change caused by the land plant invasion in the Devonian

Guillaume Le Hir; Yannick Donnadieu; Yves Goddéris; Brigitte Meyer-Berthaud; Gilles Ramstein; Ronald C. Blakey

HAL: halsde-00676445, version 1

DOI: 10.1016/j.epsl.2011.08.042

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The climate change caused by the land plant invasion in the Devonian
Le Hir G., Donnadieu Y., Goddéris Y., Meyer-Berthaud B., Ramstein G., Blakey R. C.
Earth and Planetary Science Letters 310, 3-4 (2011) 203-212 - http://hal-sde.archives-ouvertes.fr/halsde-00676445

publication format:

Article in peer-reviewed journal

subject:

Environmental Sciences/Biodiversité et Ecologie

Environmental Sciences/Biodiversité et Ecologie/Evolution

title:

The climate change caused by the land plant invasion in the Devonian

author(s):

Guillaume Le Hir (

) ¹, Yannick Donnadieu ^2, 3, Yves Goddéris ⁴, Brigitte Meyer-Berthaud (

) ⁵, Gilles Ramstein ², Ronald C. Blakey ⁶

laboratory:

1:	Institut de Physique du Globe de Paris (IPGP)

	http://www.ipgp.jussieu.fr/

	CNRS : UMR7154 – INSU – IPG PARIS – Université Pierre et Marie Curie [UPMC] - Paris VI – Université Paris VII - Paris Diderot – Université de la Réunion

	tour 14-24 - 2ème etg 4 Place Jussieu 75252 PARIS CEDEX 05

	France

2:	Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE)

	http://www.lsce.ipsl.fr/

	CNRS : UMR8212 – CEA : DSM/LSCE – Université de Versailles Saint-Quentin-en-Yvelines

	LSCE-CEA-Orme des Merisiers (point courrier 129) F-91191 GIF-SUR-YVETTE CEDEX LSCE-Vallée Bât. 12, avenue de la Terrasse, F-91198 GIF-SUR-YVETTE CEDEX

	France

3:	Institut Pierre-Simon-Laplace (IPSL)

	http://www.ipsl.jussieu.fr/

	CNRS : FR636 – Institut de recherche pour le développement [IRD] – CEA – CNES – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – Ecole normale supérieure de Paris - ENS Paris

	4 Place Jussieu 75252 PARIS CEDEX 05

	France

4:	Laboratoire des Mécanismes et Transfert en Géologie (LMTG)

	http://www.lmtg.obs-mip.fr/

	CNRS : UMR5563 – Observatoire Midi-Pyrénées – Université Paul Sabatier [UPS] - Toulouse III – Institut de recherche pour le développement [IRD] : UMR154

	14 avenue Edouard Belin 31400 Toulouse

	France

5:	BotAnique et BioinforMatique de l'Architecture des Plantes (AMAP)

	http://amap.cirad.fr/

	Centre de coopération internationale en recherche agronomique pour le développement [CIRAD] : UMR51 – CNRS : UMR5120 – Institut de recherche pour le développement [IRD] – Institut national de la recherche agronomique (INRA) : UR0931 – Université Montpellier II - Sciences et techniques

	Bd de la Lironde TA A-51/ PS 2 34398 Montpellier cedex 5

	France

6:	Northern Arizona University

	Northern Arizona University

	Flagstaff Arizona 86011

	United States

abstract:

Land plants invaded continents during the Mid-Paleozoic. Their spreading and diversification have been compared to the Cambrian explosion in terms of intensity and impact on the diversification of life on Earth. Whereas prior studies were focused on the evolution of the root system and its weathering contribution, here we used a coupled climate/carbon/vegetation model to investigate the biophysical impacts of plant colonization on the surface climate through changes in continental albedo, roughness, thermal properties, and potential evaporation. From the Early to the Late Devonian, our model simulates a significant atmospheric CO2 drop from 6300 to 2100ppmv that is due to an increase in the consumption of CO2 though continental silicate weathering. The continental drift and the climatic changes promoted by land plants explain this trend. The simulated CO2 drawdown is paradoxically associated with unchanged temperatures. We show here that the CO2 drop is counteracted by a large warming resulting from the surface albedo reduction caused by the appearance of an extended plant-cover. If CO2 is consensually assumed as the main driver of the Phanerozoic climate, this paper demonstrates that, during land-plant invasion, the modifications of soil properties could have played in the opposite direction of the carbon dioxide fall, hence maintaining warm temperatures during part of the Devonian

fulltext language:

English

journal:

Earth and Planetary Science Letters (Earth Planet. Sci. Lett.)
Publisher	Elsevier
ISSN	0012-821X

Audience:

international

publication date:

2011

volume:

310

issue:

3-4

page, identifiant, ...:

203-212

keyword(s):

Devonian – Land plants – Trees – Climate modeling – Palaeozoic – Carbon cycle

project(s), collaboration(s):

ACL-11-62

ANR Project:

Project Id

ANR-06-BLAN-0347-01


halsde-00676445, version 1
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From: Yannick Brohard <>
Submitted on: Monday, 5 March 2012 13:45:19
Updated on: Monday, 5 March 2012 13:45:19