Competition between native Antarctic vascular plants and invasive Poa annua changes with temperature and soil nitrogen availability

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datacite.alternateIdentifier.citationBiological invasions, 20 (6), 1610-1597, 2018
datacite.alternateIdentifier.doi10.1007/s10530-017-1650-7
datacite.alternateIdentifier.issn1387-3547
datacite.creatorCavieres, Lohengrin Alexis
datacite.creatorSanhueza, Ana Karen
datacite.creatorTorres-Mellado, Gustavo Adolfo
datacite.creatorCasanova-Katny, Angélica
datacite.date2018
datacite.rightsRegistro bibliográfico
datacite.subjectAntarctica
datacite.subjectColobanthus Quitensis
datacite.subjectCompetition
datacite.subjectDeschampsia Antarctica
datacite.subjectPlant Invasion
datacite.subjectPoa Annua
datacite.subjectWarming
datacite.subjectBiological Invasion
datacite.subjectCompetition (ecology)
datacite.subjectGrass
datacite.subjectInvasive Species
datacite.subjectNative Species
datacite.subjectNutrient Availability
datacite.subjectSoil Nitrogen
datacite.subjectSoil Nutrient
datacite.subjectSoil Temperature
datacite.subjectVascular Plant
datacite.subjectWarming
datacite.subjectAntarctica
datacite.subjectKing George Island
datacite.subjectSouth Shetland Islands
datacite.subjectColobanthus
datacite.subjectColobanthus Quitensis
datacite.subjectDeschampsia
datacite.subjectDeschampsia Antarctica
datacite.subjectPoa
datacite.subjectPoa Annua
datacite.subjectTracheophyta
datacite.titleCompetition between native Antarctic vascular plants and invasive Poa annua changes with temperature and soil nitrogen availability
dc.contributor.authorCASANOVA KATNY, MARIA ANGELICA
dc.date.accessioned2025-10-06T14:21:44Z
dc.date.available2025-10-06T14:21:44Z
dc.description.abstractOver the last decades human have introduced non-native organisms to Antarctica, including the grass species Poa annua. This non-native grass under constant growth temperatures has been shown negatively affect the growth of the only two native Antarctic vascular plants, Deschampsia antarctica and Colobanthus quitensis, under constant growth temperatures. However, whether there are changes in the interaction between these species under warmer conditions is an important question. In cold ecosystems, soil nutrient status directly affects plant responses to increases in temperature and Antarctic soils are highly variable in nutrient supply. Thus, in this study we experimentally assessed the interaction between the non-native Poa with the two native Antarctic vascular plant species at two different temperatures and levels of nutrient availability. Individual mats of the study species were collected in King George Island, and then transported to Concepcion where we conducted competition experiments. In the first experiment we used soil similar to that of Antarctica and plants in competition were grown at two temperatures: 5°/2° and 11°/5 °C (day/night temperature). In a second experiment plants were grown in these two temperature regimes, but we varied nitrogen (N) availability by irrigating plants with Hoagland solutions that contained 8000 or 300 µM of N. Overall, Poa exerted a competitive effect on Deschampsia but only at the higher temperature and higher N availability. At 5°/11 °C the competitive response of Deschampsia to Poa was of similar magnitude to the competitive effect of P. Deschampsia, and the competitive effect was greater with at low N. The competitive effect of Poa was similar to the competitive response of Colobanthus to Poa at both temperatures and N levels. Thus, at low temperatures and N soil content the native Antarctic species might withstand Poa invasion, but this might change with climate warming. © 2018 Elsevier B.V., All rights reserved.
dc.description.ia_keywordnative, temperatures, competitive, species, antarctic, plants, temperature
dc.identifier.issn1573-1464
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/6782
dc.language.isoen
dc.publisherSpringer Nature
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.sourceBiological invasions
dc.subject.ia_odsODS 13: Acción por el clima
dc.subject.ia_oecd1nCiencias Naturales
dc.subject.ia_oecd2nCiencias Biológicas
dc.subject.ia_oecd3nEcología
dc.type.driverinfo:eu-repo/semantics/article
dc.type.driverhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.type.openaireinfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
oaire.citationEdition2018
oaire.citationEndPage1610
oaire.citationIssue6
oaire.citationStartPage1597
oaire.citationTitleBiological invasions
oaire.citationVolume20
oaire.fundingReferenceANID FONDECYT 1120895 (Regular), PIA-ART 11 06 (PIA), PFB-023 (PFB Instituto de Ecología y Biodiversidad)
oaire.licenseConditionCopyright © Springer International Publishing AG, 2017
oaire.resourceTypeArtículo
oaire.resourceType.enArticle
relation.isAuthorOfPublicationa9399b7c-ca2e-4330-b761-690bd7ef26d8
relation.isAuthorOfPublication.latestForDiscoverya9399b7c-ca2e-4330-b761-690bd7ef26d8
uct.catalogadorjvu
uct.comunidadRecursos Naturalesen_US
uct.departamentoDepartamento de Ciencias Ambientales
uct.facultadFacultad de Recursos Naturales
uct.indizacionScience Citation Index Expanded - SCIE
uct.indizacionScopus
uct.indizacionCAB Abstracts
uct.indizacionZoological Record
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