The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens

Tesis doctoral por el sistema de Compendio de Publicaciones

Detalles Bibliográficos
Autor: Fernández Pascual, Eduardo|||0000-0002-4743-9577
Tipo de recurso: tesis doctoral
Fecha de publicación:2013
País:España
Institución:Universidad de Oviedo (UNIOVI)
Repositorio:RUO. Repositorio Institucional de la Universidad de Oviedo
Idioma:inglés
OAI Identifier:oai:digibuo.uniovi.es:10651/19430
Acceso en línea:http://hdl.handle.net/10651/19430
Access Level:acceso abierto
Palabra clave:Plant Ecology
Seed Biology
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spelling The Role of Temperature in the Seed Germination Ecology of Mountain Springs and FensEl papel de la temperatura en la ecología de la germinación de semillas de fuentes y tremedales de montañaFernández Pascual, Eduardo|||0000-0002-4743-9577Plant EcologySeed BiologyTesis doctoral por el sistema de Compendio de PublicacionesMountain calcareous spring fens are floristically diverse wetlands fed by carbonate-rich groundwater. This thesis studies their seed ecology, focusing on the interaction between environmental temperature and germination. To this end we conduct laboratory germination experiments with calcareous spring fen species to characterize the temperature dimension of the germination niche and identify specific germination strategies. We explore the special thermal characteristics of fen soils and their consequences on germination. Using the Cantabrian endemic Centaurium somedanum as a study species, we investigate the germination ecology of spring specialists and perform a common garden experiment supported by ISSR fingerprinting to determine the genetic and environmental influences on seed dormancy variation. Based on our results, we propose two germination strategies. Fen species generally follow a warm strategy, characterized by a heat response capable of overriding dormancy during episodes of unusual heat. Spring species lack the heat response and germinate only at cool temperatures. Fen soils have a buffer effect that makes their temperature less extreme than predicted, especially during the night and in winter. However, the germination niche breadth of fen species shows plasticity and is narrower in regions with harsher winters. The germination ecology of the spring specialist C. somedanum departs from the general germination patterns of its genus, showing morphophysiological dormancy and cool germination. This species has a local dormancy cline that is related to the genetic composition of the populations and to site climate, but that also responds in the short term to the seed maturation environment. These results highlight the potential of germination traits to react to climate changes at different spatial and temporal scales.Ayuda BP09107; Programa de Ayudas Predoctorales “Severo Ochoa”; Plan de Ciencia, Tecnología e Innovación del Principado de Asturias; Consejería de Educación y Ciencia; Gobierno del Principado de Asturias. Ayudas económicas para la realización de estancias en el extranjero durante el año 2012 a los beneficiarios de ayudas predoctorales del programa “Severo Ochoa”; Convenio entre la Administración del Principado de Asturias y la Universidad de Oviedo, para el Desarrollo del Plan Estratégico de Viabilidad y Conversión a Campus de Excelencia Internacional; Consejería de Educación y Ciencia; Gobierno del Principado de Asturias. Proyecto “Conservación ex situ de plantas amenazadas de máxima prioridad en el norte peninsular: Aster pyrenaeus y Centaurium somedanum”; Fundación Biodiversidad; Ministerio de Medio Ambiente, y Medio Rural y Marino; Gobierno de España.Jiménez-Alfaro González, Francisco de BorjaDíaz González, Tomás EmilioBiología de Organismos y Sistemas, Departamento de20132013-10-21doctoral thesishttp://purl.org/coar/resource_type/c_db06NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/doctoralThesishttp://hdl.handle.net/10651/19430reponame:RUO. Repositorio Institucional de la Universidad de Oviedoinstname:Universidad de Oviedo (UNIOVI)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:digibuo.uniovi.es:10651/194302026-06-07T06:38:51Z
dc.title.none.fl_str_mv The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
El papel de la temperatura en la ecología de la germinación de semillas de fuentes y tremedales de montaña
title The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
spellingShingle The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
Fernández Pascual, Eduardo|||0000-0002-4743-9577
Plant Ecology
Seed Biology
title_short The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
title_full The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
title_fullStr The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
title_full_unstemmed The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
title_sort The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
dc.creator.none.fl_str_mv Fernández Pascual, Eduardo|||0000-0002-4743-9577
author Fernández Pascual, Eduardo|||0000-0002-4743-9577
author_facet Fernández Pascual, Eduardo|||0000-0002-4743-9577
author_role author
dc.contributor.none.fl_str_mv Jiménez-Alfaro González, Francisco de Borja
Díaz González, Tomás Emilio
Biología de Organismos y Sistemas, Departamento de
dc.subject.none.fl_str_mv Plant Ecology
Seed Biology
topic Plant Ecology
Seed Biology
description Tesis doctoral por el sistema de Compendio de Publicaciones
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-10-21
dc.type.none.fl_str_mv doctoral thesis
http://purl.org/coar/resource_type/c_db06
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10651/19430
url http://hdl.handle.net/10651/19430
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:RUO. Repositorio Institucional de la Universidad de Oviedo
instname:Universidad de Oviedo (UNIOVI)
instname_str Universidad de Oviedo (UNIOVI)
reponame_str RUO. Repositorio Institucional de la Universidad de Oviedo
collection RUO. Repositorio Institucional de la Universidad de Oviedo
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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