Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae)
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , , , , , |
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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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 |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
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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1817547158727950336 |