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Characteristics of novel urban vegetation in two Portuguese urban regions
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Orientador(es)
Resumo(s)
Urban novel ecosystems were sampled across vacant sites in two
Portuguese urban regions. The flora were studied with a focus on species’ origin, life form, ecological, chorological and naturalisation types. A
multivariate constrained ordination technique was used to identify relationships between plant composition and environmental factors. The
vegetation of the two urban regions shows differences, highlighting
biome influence, as well as due to climatic variables and (to a lesser
degree) soil characteristics and lithology. Although native species are
clearly dominant, the frequency of non-native species is high and most
are potentially or effectively invasive. In the ecological spectrum, the
dominance of opportunistic ruderal species suggests a risk of biotic
homogenisation in these ecosystems, which is also noticeable in the
analysis of life form, but less in chorological and nativeness spectra.
Portuguese novel urban ecosystems are, therefore, simultaneously an
opportunity, since spontaneous vegetation management is more cost
effective and can bring wilderness to cities; and a hazard, because invasive species must be controlled to support biodiversity conservation efforts.
Descrição
Palavras-chave
Biotic homogenisation Invasion risk Non-native Plants Novel urban Ecosystems Ruderal plants Urban biodiversity
Contexto Educativo
Citação
Portela-Pereira, E, Neto, C., Brito-Henriques, E., Soares, A. L., & Azambuja, S. T. (2022) Characteristics of novel urban vegetation in two portuguese urban regions. Landscape Research, 47(3), 354-369. https://doi.org/10.1080/01426397.2022.2039107
Editora
Taylor & Francis