Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)

Detalhes bibliográficos
Autor(a) principal: Novais, Maria Helena
Data de Publicação: 2009
Outros Autores: Blanco, Saúl, Hlúbiková, Daša, Falasco, Elisa, Gomá, Joan, Delgado, Cristina, Ivanov, Plamen, Ács, Éva, Morais, Manuela, Hoffmann, Lucien, Ector, Luc
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/37238
https://doi.org/http://dx.doi.org/10.5507/fot.2009.026
Resumo: The type material of Gomphonema rosenstockianum Lang e–Bert. et E. Reichardt from La Gomera (Canary Islands, Spain) and epilithic material of rivers from several European countries were examined using light and scanning electron microscopy in order to improve the knowledge on the taxonomical status of the G. rosenstockianum and G. tergestinum (Grunow) M. Schmidt species complex. Two other Gomphonema species, G. supertergestinum E. Reichardt and G. angustius E. Reichardt, recently described and belonging to the same group, are also presented in detail. After the analysis of several populations of G. rosenstockianum and G. tergestinum it was possible to define several reliable criteria to allow morphological differentiation of both species under LM and SEM as well. A geometric morphometric analysis clearly demonstrated the separation of these taxa considering valve outline, size and shape of the central area and position of the stigma. Apart from the morphological analysis, compilation of the results of this study has also revealed differences in ecological preferences of the two species. World and European distribution maps of the four Gomphonema taxa are presented.
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spelling Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)diatomsgeometric morphometryGomphonemamorphologytype materialultrastructureThe type material of Gomphonema rosenstockianum Lang e–Bert. et E. Reichardt from La Gomera (Canary Islands, Spain) and epilithic material of rivers from several European countries were examined using light and scanning electron microscopy in order to improve the knowledge on the taxonomical status of the G. rosenstockianum and G. tergestinum (Grunow) M. Schmidt species complex. Two other Gomphonema species, G. supertergestinum E. Reichardt and G. angustius E. Reichardt, recently described and belonging to the same group, are also presented in detail. After the analysis of several populations of G. rosenstockianum and G. tergestinum it was possible to define several reliable criteria to allow morphological differentiation of both species under LM and SEM as well. A geometric morphometric analysis clearly demonstrated the separation of these taxa considering valve outline, size and shape of the central area and position of the stigma. Apart from the morphological analysis, compilation of the results of this study has also revealed differences in ecological preferences of the two species. World and European distribution maps of the four Gomphonema taxa are presented.This project was supported by Fundação para a Ciência e a Tecnologia – Portugal (grant SFRH/ BD/21625/2005), by the project “Impact of forest fires on ecological quality of Monchique streams” funded by the Fundação para a Ciência e Tecnologia project nº POCI/AMB/60266/204 and by the Public Research Centre - Gabriel Lippmann (Luxembourg). We gratefully acknowledge Christophe Bouillon for the SEM technical assistance, Damien Marion for the assistance with the German translations, Carlos E. Wetzel for his valuable suggestions on the manuscript, and Dr. Horst Lange–Bertalot for providing the type material of G. rosenstockianum.Fottea2024-08-27T14:54:06Z2024-08-272009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/37238http://hdl.handle.net/10174/37238https://doi.org/http://dx.doi.org/10.5507/fot.2009.026engNovais M.H., Blanco S., Delgado C., Falasco E., Gomà J., Hlúbiková D., Ivanov P., Morais M.M., Hoffmann L. & L. Ector, 2009. Morphological examination of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyta). Fottea 9(2): 257–274hnovais@uevora.ptndndndndndndndndndnd366Novais, Maria HelenaBlanco, SaúlHlúbiková, DašaFalasco, ElisaGomá, JoanDelgado, CristinaIvanov, PlamenÁcs, ÉvaMorais, ManuelaHoffmann, LucienEctor, Lucinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-09-10T01:48:16Zoai:dspace.uevora.pt:10174/37238Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-09-10T01:48:16Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
title Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
spellingShingle Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
Novais, Maria Helena
diatoms
geometric morphometry
Gomphonema
morphology
type material
ultrastructure
title_short Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
title_full Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
title_fullStr Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
title_full_unstemmed Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
title_sort Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
author Novais, Maria Helena
author_facet Novais, Maria Helena
Blanco, Saúl
Hlúbiková, Daša
Falasco, Elisa
Gomá, Joan
Delgado, Cristina
Ivanov, Plamen
Ács, Éva
Morais, Manuela
Hoffmann, Lucien
Ector, Luc
author_role author
author2 Blanco, Saúl
Hlúbiková, Daša
Falasco, Elisa
Gomá, Joan
Delgado, Cristina
Ivanov, Plamen
Ács, Éva
Morais, Manuela
Hoffmann, Lucien
Ector, Luc
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Novais, Maria Helena
Blanco, Saúl
Hlúbiková, Daša
Falasco, Elisa
Gomá, Joan
Delgado, Cristina
Ivanov, Plamen
Ács, Éva
Morais, Manuela
Hoffmann, Lucien
Ector, Luc
dc.subject.por.fl_str_mv diatoms
geometric morphometry
Gomphonema
morphology
type material
ultrastructure
topic diatoms
geometric morphometry
Gomphonema
morphology
type material
ultrastructure
description The type material of Gomphonema rosenstockianum Lang e–Bert. et E. Reichardt from La Gomera (Canary Islands, Spain) and epilithic material of rivers from several European countries were examined using light and scanning electron microscopy in order to improve the knowledge on the taxonomical status of the G. rosenstockianum and G. tergestinum (Grunow) M. Schmidt species complex. Two other Gomphonema species, G. supertergestinum E. Reichardt and G. angustius E. Reichardt, recently described and belonging to the same group, are also presented in detail. After the analysis of several populations of G. rosenstockianum and G. tergestinum it was possible to define several reliable criteria to allow morphological differentiation of both species under LM and SEM as well. A geometric morphometric analysis clearly demonstrated the separation of these taxa considering valve outline, size and shape of the central area and position of the stigma. Apart from the morphological analysis, compilation of the results of this study has also revealed differences in ecological preferences of the two species. World and European distribution maps of the four Gomphonema taxa are presented.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01T00:00:00Z
2024-08-27T14:54:06Z
2024-08-27
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/37238
http://hdl.handle.net/10174/37238
https://doi.org/http://dx.doi.org/10.5507/fot.2009.026
url http://hdl.handle.net/10174/37238
https://doi.org/http://dx.doi.org/10.5507/fot.2009.026
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Novais M.H., Blanco S., Delgado C., Falasco E., Gomà J., Hlúbiková D., Ivanov P., Morais M.M., Hoffmann L. & L. Ector, 2009. Morphological examination of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyta). Fottea 9(2): 257–274
hnovais@uevora.pt
nd
nd
nd
nd
nd
nd
nd
nd
nd
nd
366
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Fottea
publisher.none.fl_str_mv Fottea
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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