Per citar aquest document: http://ddd.uab.cat/record/133394
Invasive populations of Senecio pterophorus are neither more productive nor more plastic than the native populations
Colomer Ventura, Ferran
Castells Caballé, Eva
Martínez Vilalta, Jordi, 1975-

Data: 2013
Descripció: 39 p.
Resum: Successful plant invaders may have specific morphological and physiological traits that promote invasion in a new habitat. The Evolution of Increased Competitive Ability (EICA) hypothesis predicts that plants released from natural enemies in the introduced habitats are more competitive and perform better than plants from the native populations. An increased phenotypic plasticity may also favour invasion because it allows plants to function under a wider range of environments. In this study we used Senecio pterophorus (Asteraceae) to test whether introduced plant populations are 1)more competitive and 2) more plastic compared with the native populations. We conducted a common garden experiment using plants from the native range (South Africa, Eastern Cape), an expanded range (South Africa, Western Cape) and two introduced ranges (Australia and Europe) under different conditions of water availability. Contrary to the EICA and the increased plasticity hypotheses, plants from the invasive and expanded populations grew less and responded less to watering than those from their native range. These results may be caused by a depleted competition as well as the presence of genetic bottlenecks in the newly invaded areas.
Drets: L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: Creative Commons
Llengua: Anglès.
Document: masterThesis
Matèria: Plantes invasores ; Plantes -- Adaptació ; Química vegetal ; Asteràcies

Adreça alternativa: http://hdl.handle.net/2072/252020


39 p, 3.5 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències de la salut i biociències > Chemical Ecology and Toxicology Lab
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
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 Registre creat el 2015-07-13, darrera modificació el 2016-06-11



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