Reference : Climatic differentiation of the invasive alien plant Senecio inaequidens (Asteraceae) du...

	Document type :	Scientific congresses and symposiums : Unpublished conference
	Discipline(s) :	Life sciences : Genetics & genetic processes Life sciences : Environmental sciences & ecology
	To cite this reference:	http://hdl.handle.net/2268/21367

Title :	Climatic differentiation of the invasive alien plant Senecio inaequidens (Asteraceae) during invasion
Language :	English
Author, co-author :	Monty, Arnaud [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
	Mahy, Grégory [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Publication date :	2007
Audience :	National
Event name :	Biodiversity and Climate Change
Event date :	21-22 mai 2007
Event organizer :	Belgian Biodiversity Platform
Event place (city) :	Bruxelles
Event country :	Belgique
Keywords :	[en] Biological invasions ; study model ; Climate variation ; Evolution ; Evolutionary ecology
Abstract :	[en] Despite the problems they cause, biological invasions represent a great opportunity to study large-scale plant evolution, e.g. in response to changing climate. Senecio inaequidens DC. is an herbaceous perennial originating from South Africa. It was introduced as a wool alien in a few precise locations about one century ago and after a lag phase of several decades, started to spread rapidly throughout Europe and its contrasted climate. Our study uses common garden experiments to assess the differentiation of the species along both altitudinal and climatic gradients. Life history traits are measured and linked to climatic conditions of source populations. Results show that the species evolved along a climatic gradient from the Mediterranean to the high Pyrenean. This along-invasion differentiation can be linked to mean temperature evolution along the gradient and shows how an introduced species can potentially develop adaptations to new encountered thermic conditions in a length of time of several decades. How understanding the adaptive response of a plant to new climatic conditions will help anticipating the potential response of the flora to climate change is discussed.
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Name of the research project :	FRFC 2.4605.06
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/2268/21367

	File(s) associated to this reference
	Fulltext file(s): File Commentary Version Size Access Open access Monty & Mahy may 21 2007.pdf Author preprint 1.13 MB View/Open

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