Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina)

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The introduction of alien species represents one of the greatest threats to biodiversity worldwide. Highway construction increases the dispersal and invasion of exotic plant species. This study examined the assembly process of the plant communities to determine whether the roadsides of the Patagonia...

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Autores principales: Chichizola, Giselle Ailin, Gonzalez, Sofía Laura, Rovere, Adriana Edit
Formato: Articulo article acceptedVersion
Lenguaje:Inglés
Publicado: PLOS ONE 2021
Materias:
Arid environments
Functional groups
Seed dispersal
Seed bank
Ecosystem management
Grasslands
Ciencias de la Tierra y Medio Ambiente
Acceso en línea:http://rdi.uncoma.edu.ar/handle/uncomaid/16072
http://rdi.uncoma.edu.ar/handle/uncomaid/16073
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Repositorio Institucional UNCo de Universidad Nacional del Comahue
id I22-R178-uncomaid-16073
record_format dspace
spelling I22-R178-uncomaid-160732024-02-20T15:05:12Z Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina) Chichizola, Giselle Ailin Gonzalez, Sofía Laura Rovere, Adriana Edit Arid environments Functional groups Seed dispersal Seed bank Ecosystem management Grasslands Ciencias de la Tierra y Medio Ambiente The introduction of alien species represents one of the greatest threats to biodiversity worldwide. Highway construction increases the dispersal and invasion of exotic plant species. This study examined the assembly process of the plant communities to determine whether the roadsides of the Patagonian steppe represent a reservoir and dispersal source of invasive exotic species. We analyzed the composition of exotic and native species and functional groups present in the established vegetation and seed banks of roadsides and reference areas nearby. The type of dispersal of exotic and native species at the roadsides was also evaluated. Total cover and that of exotic and native species was lower at the roadsides than in the reference areas; however, at the roadsides the cover and seed abundance of exotic species was higher than that of native species. In the roadsides vegetation, native shrubs such as Acaena splendens predominated, along with exotic perennial herbs and grasses which were mainly represented by Rumex acetosella. In the seed bank the predominant species were exotic perennial herbs, also represented by R. acetosella, annual exotic species such as Epilobium brachycarpum and Verbascum thapsus, and annual native species such as Heliotropium paronychioides. No exotic shrubs were found either at the roadsides or in the reference areas. The species at the roadsides did not present a dominant type of dispersal. The abundance of exotic species at the roadsides, both in the aboveground vegetation and the seed bank, may be due to the stressful environment and the characteristics of the species themselves, such as the ability to form seed banks. This work revealed that the roadsides of the Patagonian steppe constitute reservoirs of invasive exotic species, highlighting the importance of identifying them and controlling their spread, with a view to generating ecosystem management programs. Fil: Chichizola, Giselle Ailin. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente. Laboratorio Ecotono. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Gonzalez, Sofía Laura. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente. Laboratorio Ecotono; Argentina. Fil: Gonzalez, Sofía Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Rovere, Adriana Edit. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente. Laboratorio Ecotono; Argentina. Fil: Rovere, Adriana Edit. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. 2021-02 2021-02-12T16:06:17Z 2021-02-12T16:06:17Z Articulo article acceptedVersion http://rdi.uncoma.edu.ar/handle/uncomaid/16072 http://rdi.uncoma.edu.ar/handle/uncomaid/16073 1932-6203 eng https://doi.org/10.1371/journal.pone.0246657 http://rdi.uncoma.edu.ar/handle/uncomaid/16072 https://doi.org/10.1371/journal.pone.0246657 Atribución-NoComercial-CompartirIgual 2.5 Argentina https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ application/pdf pp. 1-18 application/pdf ARG PLOS ONE Plos One. Vol. 11 (February) (2021)
institution Universidad Nacional del Comahue
institution_str I-22
repository_str R-178
collection Repositorio Institucional UNCo
language Inglés
topic Arid environments
Functional groups
Seed dispersal
Seed bank
Ecosystem management
Grasslands
Ciencias de la Tierra y Medio Ambiente
spellingShingle Arid environments
Functional groups
Seed dispersal
Seed bank
Ecosystem management
Grasslands
Ciencias de la Tierra y Medio Ambiente
Chichizola, Giselle Ailin
Gonzalez, Sofía Laura
Rovere, Adriana Edit
Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina)
topic_facet Arid environments
Functional groups
Seed dispersal
Seed bank
Ecosystem management
Grasslands
Ciencias de la Tierra y Medio Ambiente
description The introduction of alien species represents one of the greatest threats to biodiversity worldwide. Highway construction increases the dispersal and invasion of exotic plant species. This study examined the assembly process of the plant communities to determine whether the roadsides of the Patagonian steppe represent a reservoir and dispersal source of invasive exotic species. We analyzed the composition of exotic and native species and functional groups present in the established vegetation and seed banks of roadsides and reference areas nearby. The type of dispersal of exotic and native species at the roadsides was also evaluated. Total cover and that of exotic and native species was lower at the roadsides than in the reference areas; however, at the roadsides the cover and seed abundance of exotic species was higher than that of native species. In the roadsides vegetation, native shrubs such as Acaena splendens predominated, along with exotic perennial herbs and grasses which were mainly represented by Rumex acetosella. In the seed bank the predominant species were exotic perennial herbs, also represented by R. acetosella, annual exotic species such as Epilobium brachycarpum and Verbascum thapsus, and annual native species such as Heliotropium paronychioides. No exotic shrubs were found either at the roadsides or in the reference areas. The species at the roadsides did not present a dominant type of dispersal. The abundance of exotic species at the roadsides, both in the aboveground vegetation and the seed bank, may be due to the stressful environment and the characteristics of the species themselves, such as the ability to form seed banks. This work revealed that the roadsides of the Patagonian steppe constitute reservoirs of invasive exotic species, highlighting the importance of identifying them and controlling their spread, with a view to generating ecosystem management programs.
format Articulo
article
acceptedVersion
author Chichizola, Giselle Ailin
Gonzalez, Sofía Laura
Rovere, Adriana Edit
author_facet Chichizola, Giselle Ailin
Gonzalez, Sofía Laura
Rovere, Adriana Edit
author_sort Chichizola, Giselle Ailin
title Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina)
title_short Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina)
title_full Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina)
title_fullStr Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina)
title_full_unstemmed Alien plant species on roadsides of the northwestern Patagonian steppe (Argentina)
title_sort alien plant species on roadsides of the northwestern patagonian steppe (argentina)
publisher PLOS ONE
publishDate 2021
url http://rdi.uncoma.edu.ar/handle/uncomaid/16072
http://rdi.uncoma.edu.ar/handle/uncomaid/16073
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AT gonzalezsofialaura alienplantspeciesonroadsidesofthenorthwesternpatagoniansteppeargentina
AT rovereadrianaedit alienplantspeciesonroadsidesofthenorthwesternpatagoniansteppeargentina
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