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dc.contributor.authorRaggio, José
dc.contributor.authorGreen, T.G. Allan
dc.contributor.authorCrittenden, P.D.
dc.contributor.authorPintado, Ana
dc.contributor.authorVivas, Mercedes
dc.contributor.authorPérez-Ortega, Sergio
dc.contributor.authorde los Ríos, Asunción
dc.contributor.authorSancho, Leopoldo G.
dc.date.accessioned2013-04-09T02:37:00Z
dc.date.available2013-04-09T02:37:00Z
dc.date.copyright2012-05-24
dc.date.issued2012
dc.identifier.citationRaggio, J., Green, T. G. A., Crittenden, P. D., Pintado, A., Vivas, M., Pérez-Ortega, S., & Sancho, L. G. (2012). Comparative ecophysiology of three Placopsis species, pioneer lichens in recently exposed Chilean glacial forelands. Symbiosis, 56(2), 55-66.en_NZ
dc.identifier.issn0334-5114
dc.identifier.urihttps://hdl.handle.net/10289/7428
dc.description.abstractLichen species belonging to the genus Placopsis are early colonisers on snow free moraines of exposed land surfaces in the subantarctic region of Tierra de Fuego, South Chile. The physiological performance of three co-occurring species, P. pycnotheca, (terricolous), and P. perrugosa, and P. stenophylla (both saxicolous) was studied. All, possess green algal photobionts but have cyanobacteria in cephalodia. It was found that there was (i) a strong positive correlation between the acetylene reduction rate (AR) and the maximum photosynthetic rate (Amax), between the N content and the AR rate, and between the N and P contents, and (ii) the relationship between the CO2-exchange rates and the responses obtained in the laboratory reflected the ecology of these three lichens in the field. The results provide new information about the dynamics of some of the fastest growing crustose lichens. We hypothesize that the performance of these three species may have developed as a response to growing in an unstable environment that resulted from frequent glacial fluctuations.en_NZ
dc.language.isoen
dc.publisherSpringer-Verlagen_NZ
dc.relation.ispartofSymbiosis
dc.subjectnitrogen fixationen_NZ
dc.subjectphotosynthesisen_NZ
dc.subjectphosphorusen_NZ
dc.subjectgrowthen_NZ
dc.subjectCephalodiaen_NZ
dc.titleComparative ecophysiology of three Placopsis species, pioneer lichens in recently exposed Chilean glacial forelandsen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1007/s13199-012-0159-1en_NZ
dc.relation.isPartOfSymbiosisen_NZ
pubs.begin-page55en_NZ
pubs.elements-id37814
pubs.end-page66en_NZ
pubs.issue2en_NZ
pubs.volume56en_NZ


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