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dc.contributor.author
Urcelay, Roberto Carlos
dc.contributor.author
Bret Harte, M. Syndonia
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Díaz, Sandra Myrna
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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
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Ericoid Mycorrhizas
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Mycorrhizal Root Interactions
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Nutrient Availability
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Removal Experiment
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Otras Ciencias Biológicas
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Ciencias Biológicas
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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
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