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dc.contributor.author
Marcora, Paula Inés
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dc.contributor.author
Hensen, Isabell
dc.contributor.author
Renison, Daniel
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dc.contributor.author
Seltmann, Peggy
dc.contributor.author
Wesche, Karsten
dc.date.available
2024-08-06T12:13:22Z
dc.date.issued
2008-12
dc.identifier.citation
Marcora, Paula Inés; Hensen, Isabell; Renison, Daniel; Seltmann, Peggy; Wesche, Karsten; The performance of Polylepis australis trees along their entire altitudinal range: Implications of climate change for their conservation; Wiley Blackwell Publishing, Inc; Diversity and Distributions; 14; 4; 12-2008; 630-636
dc.identifier.issn
1366-9516
dc.identifier.uri
http://hdl.handle.net/11336/241847
dc.description.abstract
Altitudinal gradients are expected to heavily influence the general performance of mountain tree species. For this study we evaluated vitality, radial growth and reproductive efficiency in Polylepis australis (Rosaceae) throughout its complete altitudinal range in central Argentina. We selected seven forest fragments ranging from 900 to 2700 m a.s.l. In the field, we subjectively assigned vitality and seed productivity indexes to 12 P. australis trees per fragment. In addition, we cored and assessed for radial growth 10–18 trees per altitudinal level. In the laboratory, we individually weighed seeds from four or five trees from each altitudinal level and divided into two seed mass classes (light and heavy). We then tested for germination and monitored their seedlings for survival. Seedlings of three trees per altitudinal level were harvested after 40 days and assessed for dry mass. Seedlings of one to two trees per altitudinal level were monitored for survival until both leaves and roots had died. Our main results showed two types of responses to altitude: a unimodal relationship with an optimum at intermediate altitudes of around 1800 m a.s.l. for tree vitality, radial growth, seed productivity and seed mass; and an increase with altitude for in-vitro seed germination and seedling survival. A rise in temperature due to climate change could restrict P. australis to the upper most altitudes, where conservation of these forests will be a priority.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Central Argentina
dc.subject
Córdoba Mountains
dc.subject
Altitudinal gradient
dc.subject
Reproductive efficiency
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The performance of Polylepis australis trees along their entire altitudinal range: Implications of climate change for their conservation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-05T13:24:41Z
dc.journal.volume
14
dc.journal.number
4
dc.journal.pagination
630-636
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Marcora, Paula Inés. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Diversidad Biológica y Ecológica. Cátedra de Ecología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Hensen, Isabell. Martin-Luther-University Halle-Wittenberg; Alemania
dc.description.fil
Fil: Renison, Daniel. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Diversidad Biológica y Ecológica. Cátedra de Ecología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina
dc.description.fil
Fil: Seltmann, Peggy. Martin-Luther-University Halle-Wittenberg; Alemania
dc.description.fil
Fil: Wesche, Karsten. Martin-Luther-University Halle-Wittenberg; Alemania
dc.journal.title
Diversity and Distributions
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1111/j.1472-4642.2007.00455.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1111/j.1472-4642.2007.00455.x
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