Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?

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Compact urbanization is the main strategy for sustainable urban development. However, it is yet unclear whether compact urban forms are ecologically more favourable than dispersed ones. In this paper, we studied the effects of urban sprawl on the riparian vegetation condition in one of the most degr...

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Autores principales: Guida-Johnson, Bárbara, Faggi, Ana, Zuleta, G. A.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Wiley 2017
Materias:
PLANIFICACION URBANA
VEGETACION
DESARROLLO SOSTENIBLE
BIODIVERSIDAD
Acceso en línea:https://hdl.handle.net/20.500.14340/920
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Repositorio institucional de la Universidad de Flores de Universidad de Flores
id I89-R270-20.500.14340-920
record_format dspace
spelling I89-R270-20.500.14340-9202023-07-07T09:49:32Z doi:https://doi.org/10.1002/rra.3138 urn:issn:1535-1467 https://hdl.handle.net/20.500.14340/920 Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity? 2017 Guida-Johnson, Bárbara Faggi, Ana Zuleta, G. A. Wiley eng PLANIFICACION URBANA VEGETACION DESARROLLO SOSTENIBLE BIODIVERSIDAD Compact urbanization is the main strategy for sustainable urban development. However, it is yet unclear whether compact urban forms are ecologically more favourable than dispersed ones. In this paper, we studied the effects of urban sprawl on the riparian vegetation condition in one of the most degraded watersheds in the Buenos Aires metropolitan area, Argentina. We conducted random sampling of the riparian vegetation at sites along streams in the basin and assessed urban indicators at the reach and sub-watershed scales for each of those sites in a geographic information system: urban area, impervious surface, population density and two landscape metrics of dispersion. The indicators assessed explained a high proportion of the variability of the vegetation response variables, thereby confirming the importance of urban sprawl pressure in shaping riparian communities in fluvial ecosystems. Dispersed urbanization had more positive than negative effects on the vegetation in the study area. Riverbanks associated with dispersed urbanization had more plant species, including exotics, when urban sprawl was assessed at the local scale. At the sub-watershed scale, dispersed urbanized areas were richer in native plants and most of the functional groups, and poorer in exotic species. The model of the compact city, including bio-corridors along watercourses, has been proposed for the Buenos Aires conurbation process for the next decades. Our results showed that the quality of existing river corridors across the compact matrix was not desirable and best practices for redesigning a more sustainable landscape structure are necessary, including the restoration of habitats for wetland species. Fil: Guida-Johnson, Bárbara. Universidad Nacional de Cuyo; Argentina. Fil: Guida-Johnson, Bárbara. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Faggi, Ana. Universidad de Flores; Argentina. Fil: Faggi, Ana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Zuleta, G. A. Universidad Maimónides; Argentina. info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Atribución 4.0 Internacional (CC BY 4.0) application/pdf
institution Universidad de Flores
institution_str I-89
repository_str R-270
collection Repositorio institucional de la Universidad de Flores
language Inglés
topic PLANIFICACION URBANA
VEGETACION
DESARROLLO SOSTENIBLE
BIODIVERSIDAD
spellingShingle PLANIFICACION URBANA
VEGETACION
DESARROLLO SOSTENIBLE
BIODIVERSIDAD
Guida-Johnson, Bárbara
Faggi, Ana
Zuleta, G. A.
Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?
topic_facet PLANIFICACION URBANA
VEGETACION
DESARROLLO SOSTENIBLE
BIODIVERSIDAD
description Compact urbanization is the main strategy for sustainable urban development. However, it is yet unclear whether compact urban forms are ecologically more favourable than dispersed ones. In this paper, we studied the effects of urban sprawl on the riparian vegetation condition in one of the most degraded watersheds in the Buenos Aires metropolitan area, Argentina. We conducted random sampling of the riparian vegetation at sites along streams in the basin and assessed urban indicators at the reach and sub-watershed scales for each of those sites in a geographic information system: urban area, impervious surface, population density and two landscape metrics of dispersion. The indicators assessed explained a high proportion of the variability of the vegetation response variables, thereby confirming the importance of urban sprawl pressure in shaping riparian communities in fluvial ecosystems. Dispersed urbanization had more positive than negative effects on the vegetation in the study area. Riverbanks associated with dispersed urbanization had more plant species, including exotics, when urban sprawl was assessed at the local scale. At the sub-watershed scale, dispersed urbanized areas were richer in native plants and most of the functional groups, and poorer in exotic species. The model of the compact city, including bio-corridors along watercourses, has been proposed for the Buenos Aires conurbation process for the next decades. Our results showed that the quality of existing river corridors across the compact matrix was not desirable and best practices for redesigning a more sustainable landscape structure are necessary, including the restoration of habitats for wetland species.
format Artículo
Artículo
publishedVersion
author Guida-Johnson, Bárbara
Faggi, Ana
Zuleta, G. A.
author_facet Guida-Johnson, Bárbara
Faggi, Ana
Zuleta, G. A.
author_sort Guida-Johnson, Bárbara
title Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?
title_short Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?
title_full Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?
title_fullStr Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?
title_full_unstemmed Effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?
title_sort effects of urban sprawl on riparian vegetation : is compact or dispersed urbanization better for biodiversity?
publisher Wiley
publishDate 2017
url https://hdl.handle.net/20.500.14340/920
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