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Master thesis

Flore urbaine : entre diversité et homogénéisation

Abstract : Despite the lack of biodiversity that they can induce, the cities create new areas of study with new environmental conditions and eco filter. They can disturb some limits such as the disappearance of different species in which mankind plays an important role. First, a floristic diagnosis of the cities of Montreal and Quebec was created in which it was observed if the flora differs depending on the habitat, if some species are dominating and if exotic species induce a biotic homogenization. The influence of the intensity of urbanization on those last parameters was also studied. To do so, data collected in 2014 on the different types of habitat were analyzed and a list of wastelands was made. These results show an important number of different species that varies significantly between Quebec and Montreal. Different habitats induce different floras but specific species are identical from one place to another. Even if the exotic species recover 30% of the ground in Montreal. Finally, the importance of the intensity of urbanization on the flora composition was proven but it doesn’t induce a homogenization more important on the micro-habitats. This study is only the beginning and will need further investigation especially as the research in urban ecology will become more and more important given the growing importance of urban areas.
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https://hal.univ-lorraine.fr/hal-01828649
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Aurélien Savoy. Flore urbaine : entre diversité et homogénéisation. Sciences de l'environnement. 2015. ⟨hal-01828649⟩

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