Reproductive output of mosses under experimental warming on Fildes Peninsula, King George Island, maritime Antarctica

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datacite.alternateIdentifier.citationRevista Chilena de Historia Natural, 89, 2016
datacite.alternateIdentifier.doi10.1186/s40693-016-0061-y
datacite.alternateIdentifier.issn0716-078X
datacite.creatorCasanova-Katny, A.
datacite.creatorTorres-Mellado, G. A.
datacite.creatorEppley, S. M.
datacite.date2016
datacite.rightsAcceso abierto
datacite.subjectAntarctica
datacite.subjectBryophyte
datacite.subjectClimate change
datacite.subjectFildes Peninsula
datacite.subjectKing George Island
datacite.subjectSporophyte
datacite.titleReproductive output of mosses under experimental warming on Fildes Peninsula, King George Island, maritime Antarctica
dc.contributor.authorCASANOVA KATNY, MARIA ANGELICA
dc.description.abstractBackground: Mosses dominate much of the vegetation in the Antarctic, but the effect of climatic change on moss growth and sexual reproduction has scarcely been studied. In Antarctica, mosses infrequently produce sporophytes; whether this is due to physiological limitation or an adaptive response is unknown. We studied the effect of experimental warming (with Open Top Chambers, OTCs) on sporophyte production on Fildes Peninsula, King George Island for four moss species (Bartramia patens, Hennediella antarctica, Polytrichastrum alpinum, and Sanionia georgicouncinata). To determine whether reducing cold stress increases sexual reproduction as would be predicted if sex is being constrained due to physiological limitations, we counted sporophytes for these four moss species in OTC and control plots during two years. Also, we measured sporophyte size for a smaller sample of sporophytes of two species, B. patens and H. antarctica, in the OTC and control plots. Results: After 2 years of the experimental treatment, maximum daily air temperature, but not daily mean air temperature, was significantly higher inside OTCs than outside. We found a significant species by treatment effect for sporophyte production, with more sporophytes produced in OTCs compared with controls for B. patens and P. alpinum. Also, sporophytes of B. patens and H. antarctica were significantly larger in the OTCs compared with the control plots. Conclusions: Our results suggest that the lack of sexual reproduction in these Antarctic mosses is not adaptive but is constrained by current environmental conditions and that ameliorating conditions, such as increased temperature may affect sexual reproduction in many Antarctic mosses, altering moss population genetics and dispersal patterns.
dc.description.ia_keywordmosses, antarctica, sporophytes, moss, sexual, reproduction, otcs
dc.formatPDF
dc.identifier.issn0717-6317
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/3431
dc.language.isoen
dc.publisherSpringer Nature
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.sourceRevista Chilena de Historia Natural
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.citationEdition2016
oaire.citationTitleRevista Chilena de Historia Natural
oaire.citationVolume89
oaire.fundingReferenceINACH T0307
oaire.fundingReferenceANID FONDECYT 1120895 (Regular)
oaire.fundingReferenceNSF PLR1341742
oaire.fundingReferenceNSF Directorate for Geosciences OPP
oaire.licenseConditionObra bajo licencia Creative Commons Atribución 4.0 Internacional
oaire.licenseCondition.urihttps://creativecommons.org/licenses/by/4.0/
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.indizacionSciELO
uct.indizacionLatindex
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