Mostrar el registro sencillo del ítem

dc.contributor.author
Urcelay, Roberto Carlos  
dc.contributor.author
Bret Harte, M. Syndonia  
dc.contributor.author
Díaz, Sandra Myrna  
dc.contributor.author
Chapin III, F. Stuart  
dc.date.available
2018-04-06T15:37:28Z  
dc.date.issued
2003-11  
dc.identifier.citation
Urcelay, Roberto Carlos; Bret Harte, M. Syndonia; Díaz, Sandra Myrna; Chapin III, F. Stuart; Mycorrhizal colonization mediated by species interactions in arctic tundra; Springer; Oecologia; 137; 3; 11-2003; 399-404  
dc.identifier.issn
0029-8549  
dc.identifier.uri
http://hdl.handle.net/11336/41117  
dc.description.abstract
The Alaskan tussock tundra is a strongly nutrient-limited ecosystem, where almost all vascular plant species are mycorrhizal. We established a long-term removal experiment to document effects of arctic plant species on ecto- and ericoid mycorrhizal fungi and to investigate whether species interactions and/ or nutrient availability affect mycorrhizal colonization. The treatments applied were removal of Betula nana (Betulaceae, dominant deciduous shrub species), removal of Ledum palustre (Ericaceae, dominant evergreen shrub species), control (no removal), and each of these three treatments with the addition of fertilizer. After 3 years of Ledum removal and fertilization, we found that overall ectomycorrhizal colonization in Betula was significantly reduced. Changes in ectomycorrhizal morphotype composition in removal and fertilized treatments were also observed. These results suggest that the effect of Ledum on Betula's mycorrhizal roots is due to sequestration of nutrients by Ledum, leading to reduced nutrient availability in the soil. In contrast, ericoid mycorrhizal colonization was not affected by fertilization, but the removal of Betula and to a lower degree of Ledum resulted in a reduction of ericoid mycorrhizal colonization suggesting a direct effect of these species on ericoid mycorrhizal colonization. Nutrient availability was only higher in fertilized treatments, but caution should be taken with the interpretation of these data as soil microbes may effectively compete with the ion exchange resins for the nutrients released by plant removal in these nutrient-limited soils.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Ectomycorrhizas  
dc.subject
Ericoid Mycorrhizas  
dc.subject
Mycorrhizal Root Interactions  
dc.subject
Nutrient Availability  
dc.subject
Removal Experiment  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Mycorrhizal colonization mediated by species interactions in arctic tundra  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-04-03T19:22:23Z  
dc.identifier.eissn
1432-1939  
dc.journal.volume
137  
dc.journal.number
3  
dc.journal.pagination
399-404  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlin  
dc.description.fil
Fil: Urcelay, Roberto Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina  
dc.description.fil
Fil: Bret Harte, M. Syndonia. University Of Alaska; Estados Unidos  
dc.description.fil
Fil: Díaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina  
dc.description.fil
Fil: Chapin III, F. Stuart. University Of Alaska; Estados Unidos  
dc.journal.title
Oecologia  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00442-003-1349-6  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00442-003-1349-6