Successional patterns along soil development gradients formed by glacier retreat in the maritime antarctic, King George Island

Simple item page
dc.contributor.authorBoy, Jens
dc.contributor.authorGodoy, Roberto
dc.contributor.authorShibistova, Olga
dc.contributor.authorBoy, Diana
dc.contributor.authorMcCulloch, Robert
dc.contributor.authorAndrino de la Fuente, Alberto
dc.contributor.authorAguirre Morales, Mauricio
dc.contributor.authorMikutta, Robert
dc.contributor.authorGuggenberger, Georg
dc.coverage.spatialKing George Island
dc.date.accessioned2019-01-03T21:00:13Z
dc.date.available2019-01-03T21:00:13Z
dc.date.issued2016
dc.description.abstractBackground: Maritime Antarctica is severely affected by climate change and accelerating glacier retreat forming temporal gradients of soil development. Successional patterns of soil development and plant succession in the region are largely unknown, as are the feedback mechanisms between both processes. Here we identify three temporal gradients representing horizontal and vertical glacier retreat, as well as formation of raised beaches due to isostatic uplift, and describe soil formation and plant succession along them. Our hypotheses are (i) plants in Antarctica are able to modulate the two base parameters in soil development, organic C content and pH, along the temporal gradients, leading to an increase in organic carbon and soil acidity at relatively short time scales, (ii) the soil development induces succession along these gradients, and (iii) with increasing soil development, bryophytes and Deschampsia antarctica develop mycorrhiza in maritime Antarctica in order to foster interaction with soil. Results: All temporal gradients showed soil development leading to differentiation of soil horizons, carbon accumulation and increasing pH with age. Photoautptroph succession occurred rapidly after glacier retreat, but occurrences of mosses and lichens interacting with soils by rhizoids or rhizines were only observed in the later stages. The community of ground dwelling mosses and lichens is the climax community of soil succession, as the Antarctic hairgrass D. antarctica was restricted to ornithic soils. Neither D. antarctica nor mosses at the best developed soils showed any sign of mycorrhization. Conclusion: Temporal gradients formed by glacier retreat can be identified in maritime Antarctic, where soil development and plant succession of a remarkable pace can be observed, although pseudo-succession occurs by fertilization gradients caused by bird feces. Thus, the majority of ice-free surface in Antarctica is colonized by plant communities which interact with soil by litter input rather than by direct transfer of photoassimilates to soil.es_ES
dc.identifier.citationRevista Chilena de Historia Natural (2016) 89:6es_ES
dc.identifier.issn0717-6317
dc.identifier.urihttp://hdl.handle.net/20.500.11894/1207
dc.language.isoenes_ES
dc.publisherSociedad de Biología de Chilees_ES
dc.relation.ispartofRevista Chilena de Historia Naturales_ES
dc.relation.ispartofVol. 89:6
dc.relation.uriDOI 10.1186/s40693-016-0056-8
dc.rightsCreative Commons Attribution 4.0 International licensees_ES
dc.subjectCienciaes_ES
dc.subjectTemporal gradientses_ES
dc.subjectChronosequenceses_ES
dc.subjectSoil organic carbones_ES
dc.subjectMycorrhizaes_ES
dc.titleSuccessional patterns along soil development gradients formed by glacier retreat in the maritime antarctic, King George Islandes_ES
dc.typeArtículoes_ES

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Boy et al. Revista Chilena de Historia Natural _2016_ 89_6.pdf
Size:
3.21 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Artículos
Identidad del Fin del MundoUniversidad de Magallanes• Avenida Bulnes 01855 • Punta Arenas • ChileTeléfono: +56 61 207135 • Email: walter.molina@umag.clSistema desarrollado por Prodigio Consultores en Sistema Dspace