Climatic niche shift of an invasive shrub (Ulex europaeus): A global scale comparison in native and introduced regions

Christina Mathias, Limbada Fawziah, Atlan Anne. 2019. Climatic niche shift of an invasive shrub (Ulex europaeus): A global scale comparison in native and introduced regions. Journal of Plant Ecology, 13 (1) : 42-50.

Quartile : Q2, Sujet : FORESTRY / Quartile : Q2, Sujet : PLANT SCIENCES / Quartile : Q3, Sujet : ECOLOGY

Résumé : Aims: Invasive species, which recently expanded, may help understand how climatic niche can shift at the time scale of the current global change. Here, we address the climatic niche shift of an invasive shrub (common gorse, Ulex europaeus) at the world and regional scales to assess how it could contribute to increasing invasibility. Methods: Based on a 28,187 occurrences database, we used a combination of 9 species distribution models (SDM) to assess regional climatic niche from both the native range (Western Europe) and the introduced range in different parts of the world (North-West America, South America, North Europe, Australia and New Zealand). Important Findings: Despite being restricted to annual mean temperature between 4 and 22 °C, as well as annual precipitation higher than 300 mm yr-1, the range of bioclimatic conditions suitable for gorse was very large. Based on a native vs introduced SDM comparison, we highlighted a niche expansion in North-West America, South America and to a lesser degree in Australia, while a niche displacement was assessed in North Europe. These niche changes induced an increase in potential occupied areas by gorse by 49, 111, 202 and 283% in Australia, North Europe, North-West America and South America, respectively. On the contrary, we found no evidence of niche change in New Zealand, which presents similar climatic condition to the native environment (Western Europe). This study highlights how niche expansion and displacement of gorse might increase invasibility at regional scale. The change in gorse niche toward new climatic conditions may result from adaptive plasticity or genetic evolution and may explain why it has such a high level of invasibility. Taking into account the possibility of a niche shift is crucial to improve invasive plants management and control.

Mots-clés Agrovoc : espèce envahissante, distribution géographique, écologie, aptitude à coloniser, établissement de la plante

Mots-clés complémentaires : Ulex europaeus, Niche écologique

Mots-clés libres : Plant invasion, Invasibility, Niche Shift, Species distribution models, Ecological niche

Classification Agris : H60 - Mauvaises herbes et désherbage
F40 - Écologie végétale
F70 - Taxonomie végétale et phytogéographie

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement hors UE : Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique

Auteurs et affiliations

• Christina Mathias, CIRAD-PERSYST-UPR AIDA (REU) ORCID: 0000-0003-3618-756X - auteur correspondant
• Limbada Fawziah, Université de Rennes I (FRA)
• Atlan Anne, Université de Rennes I (FRA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/595466/)

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