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dc.contributor.author
Seltmann, Peggy  
dc.contributor.author
Leyer, Ilona  
dc.contributor.author
Renison, Daniel  
dc.contributor.author
Hensen, Isabell  
dc.date.available
2018-09-05T18:41:12Z  
dc.date.issued
2007-03  
dc.identifier.citation
Seltmann, Peggy; Leyer, Ilona; Renison, Daniel; Hensen, Isabell; Variation of seed mass and its effects on germination in Polylepis australis: Implications for seed collection; Springer; New Forests; 33; 2; 3-2007; 171-181  
dc.identifier.issn
0169-4286  
dc.identifier.uri
http://hdl.handle.net/11336/58407  
dc.description.abstract
South American Polylepis mountain forests are recognised as being one of the most endangered forest ecosystems in the world. Reforestation measures have been strongly recommended but may be hampered due to the very low seed germination reported for several Polylepis species. In order to facilitate reforestation we analysed the influence of seed mass on germination probability for Polylepis australis seeds in the Córdoba mountains (central Argentina). We collected seeds from 43 trees distributed throughout five woodland fragments located within two regions differing in size, topographical position, and altitude (1,900 m a.s.l. and 2,200 m a.s.l.). Seeds of Polylepis australis exhibited a great variation in terms of mass and percent seed germination among individual trees and among geographical regions. The results of logistic regression showed that germination probability was highly correlated with seed mass. However, the explained deviance significantly increased by including the region, the woodland fragment and especially the individual tree in addition to seed mass in the regression models. We conclude that selecting seeds on the basis of mass is an appropriate way to enhance germination prospects for reforestation projects. However, no absolute mass values are applicable in this context as the highest germination probabilities were reached at varying seed mass values depending on geographical region, woodland fragment or individual tree. We suggest collecting the relatively heaviest available seeds, even though the absolute seed mass may be low.  
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
Argentina  
dc.subject
Logistic Regression  
dc.subject
Mountain Woodlands  
dc.subject
Polylepis Australis  
dc.subject
Reforestation  
dc.subject
Seed Germination  
dc.subject
Seed Mass  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Variation of seed mass and its effects on germination in Polylepis australis: Implications for seed collection  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-08-13T17:06:10Z  
dc.identifier.eissn
1573-5095  
dc.journal.volume
33  
dc.journal.number
2  
dc.journal.pagination
171-181  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlin  
dc.description.fil
Fil: Seltmann, Peggy. GardenMartin-Luther-University. Institute of Geobotany and Botanical; Alemania  
dc.description.fil
Fil: Leyer, Ilona. Conservation Biology Philipps-University Marburg. Department of Biology; Alemania  
dc.description.fil
Fil: Renison, Daniel. 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: Hensen, Isabell. GardenMartin-Luther-University. Institute of Geobotany and Botanical; Alemania  
dc.journal.title
New Forests  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11056-006-9021-8  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11056-006-9021-8