Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae)
This report reviews and incorporates new elemental and isotope chemostratigraphic data for correlation of Neoproterozoic carbonate-dominated successions in South America (Argentina, Bolivia, Brazil, Paraguay and Uruguay). These thick mixed carbonate/siliciclastic successions were largely deposited i...
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| Other Authors: | , |
| Format: | article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/20.500.12008/26306 |
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| _version_ | 1868890187605475328 |
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| author | Valtierra Sierra, María Victoria |
| author2 | Speroni, Gabriela Bonifacino, José Mauricio |
| author2_role | author author |
| author_browse | Bonifacino, José Mauricio Speroni, Gabriela Valtierra Sierra, María Victoria |
| author_facet | Valtierra Sierra, María Victoria Speroni, Gabriela Bonifacino, José Mauricio |
| author_role | author |
| collection | COLIBRI |
| dc.contributor.none.fl_str_mv | Valtierra María Victoria, Universidad de la República (Uruguay). Facultad de Agronomía Speroni Gabriela, Universidad de la República (Uruguay). Facultad de Agronomía Bonifacino Mauricio José, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Ecología y Ciencias Ambientales |
| dc.creator.none.fl_str_mv | Valtierra Sierra, María Victoria Speroni, Gabriela Bonifacino, José Mauricio |
| dc.date.none.fl_str_mv | 2018 2021-01-11T15:56:43Z 2021-01-11T15:56:43Z |
| dc.format.none.fl_str_mv | 12 h. application/pdf |
| dc.identifier.none.fl_str_mv | Valtierra, M, Speroni, G y Bonifacino, M. "Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae)". Rodriguesia. [en línea] 2018, 69(2), pp. 373-383. 12 h. doi: 10.1590/2175-7860201869209 0370-6583 https://hdl.handle.net/20.500.12008/26306 10.1590/2175-7860201869209 |
| dc.language.none.fl_str_mv | en eng |
| dc.publisher.none.fl_str_mv | Instituto de Pesquisas Jardim Botanico do Rio de Janeiro |
| dc.relation.none.fl_str_mv | Rodriguesia, 2018 69 (2), pp. 373-383 |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Licencia Creative Commons Atribución (CC - By 4.0) |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.none.fl_str_mv | Baccharidinae Dioecy Head inflorescence Heterogamous Homogamous Reproductive biology |
| dc.title.none.fl_str_mv | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | This report reviews and incorporates new elemental and isotope chemostratigraphic data for correlation of Neoproterozoic carbonate-dominated successions in South America (Argentina, Bolivia, Brazil, Paraguay and Uruguay). These thick mixed carbonate/siliciclastic successions were largely deposited in epicontinental basins or accumulated on passive margins on the edges of cratons (e.g. São Francisco, Amazonia, Rio Apa Block, Pampia and Río de la Plata paleocontinents) during extensional events related to the rifting of the Rodinia Supercontinent. From the stratigraphic point of view, these successions occur as three mega-sequences: glaciogenic, marine carbonate platform (above glaciomarine diamictites or rift successions), and dominantly continental to transitional siliciclastics. In the orogenic belts surrounding cratons, carbonate-dominated successions with important volcanoclastic/siliciclastic contribution have been, in most cases, strongly deformed. The precise ages of these successions remain a matter of debate, but recently new paleontological and geochronological data have considerably constrained depositional intervals. Here, we report high-resolution C, O, Sr, and S isotope trends measured in well-preserved sample sets and mainly use Sr and C isotopes in concert with lithostratigraphic/biostratigraphic observations to provide detailed correlations of these successions. The establishing of a high-level and definite chemostratigraphic correlation between Neoproterozoic basins in South America is the main goal of this work. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_c54e42dc679ed06e2d7eb52bd85b95ff |
| identifier_str_mv | Valtierra, M, Speroni, G y Bonifacino, M. "Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae)". Rodriguesia. [en línea] 2018, 69(2), pp. 373-383. 12 h. doi: 10.1590/2175-7860201869209 0370-6583 10.1590/2175-7860201869209 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/26306 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| publisher.none.fl_str_mv | Instituto de Pesquisas Jardim Botanico do Rio de Janeiro |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Licencia Creative Commons Atribución (CC - By 4.0) |
| spelling | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae)Valtierra Sierra, María VictoriaSperoni, GabrielaBonifacino, José MauricioBaccharidinaeDioecyHead inflorescenceHeterogamousHomogamousReproductive biologyThis report reviews and incorporates new elemental and isotope chemostratigraphic data for correlation of Neoproterozoic carbonate-dominated successions in South America (Argentina, Bolivia, Brazil, Paraguay and Uruguay). These thick mixed carbonate/siliciclastic successions were largely deposited in epicontinental basins or accumulated on passive margins on the edges of cratons (e.g. São Francisco, Amazonia, Rio Apa Block, Pampia and Río de la Plata paleocontinents) during extensional events related to the rifting of the Rodinia Supercontinent. From the stratigraphic point of view, these successions occur as three mega-sequences: glaciogenic, marine carbonate platform (above glaciomarine diamictites or rift successions), and dominantly continental to transitional siliciclastics. In the orogenic belts surrounding cratons, carbonate-dominated successions with important volcanoclastic/siliciclastic contribution have been, in most cases, strongly deformed. The precise ages of these successions remain a matter of debate, but recently new paleontological and geochronological data have considerably constrained depositional intervals. Here, we report high-resolution C, O, Sr, and S isotope trends measured in well-preserved sample sets and mainly use Sr and C isotopes in concert with lithostratigraphic/biostratigraphic observations to provide detailed correlations of these successions. The establishing of a high-level and definite chemostratigraphic correlation between Neoproterozoic basins in South America is the main goal of this work.Los estudios fenológicos florales y de inflorescencias son una importante fuente de conocimiento para interpretar los mecanismos reproductivos y las hipótesis filogenéticas en plantas. Se analiza la morfología y funcionalidad de los estadios florales presentes en los capítulos homógamos pistilados y en los capítulos heterógamos funcionalmente estaminados de la especie dioica Baccharis aliena. El seguimiento fenológico de ambos tipos de capítulos fue realizado en plantas cultivadas de B. aliena. Se determinaron los estadios fenológicos florales de los capítulos homógamos y heterógamos a partir de análisis morfométricos de las flores desde la pre-antesis hasta los primeros síntomas de senescencia. Las flores de los capítulos homógamos y heterógamos presentan antesis visual previa a la antesis funcional y esta característica se traslada al capítulo. La antesis ocurre de forma centrípeta en las sucesivas series de flores, y tiene una duración de 21 días en el capítulo homógamo y 20 días en el capítulo heterógamo. Los capítulos homógamos y heterógamos coinciden exactamente en tiempo y duración del período de floración, característica que asegura la interacción floral entre las plantas y la actividad de los polinizadores. El conocimiento de los sistemas reproductivos en las Astereae subtribu Baccharidinae contribuye a la interpretación de las estrategias evolutivas de este grupo altamente exitoso.Instituto de Pesquisas Jardim Botanico do Rio de JaneiroValtierra María Victoria, Universidad de la República (Uruguay). Facultad de AgronomíaSperoni Gabriela, Universidad de la República (Uruguay). Facultad de AgronomíaBonifacino Mauricio José, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Ecología y Ciencias Ambientales2021-01-11T15:56:43Z2021-01-11T15:56:43Z2018Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion12 h.application/pdfValtierra, M, Speroni, G y Bonifacino, M. "Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae)". Rodriguesia. [en línea] 2018, 69(2), pp. 373-383. 12 h. doi: 10.1590/2175-78602018692090370-6583https://hdl.handle.net/20.500.12008/2630610.1590/2175-7860201869209reponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaenengRodriguesia, 2018 69 (2), pp. 373-383Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución (CC - By 4.0)oai:colibri.udelar.edu.uy:20.500.12008/263062026-04-14T10:09:30Z |
| spellingShingle | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) Valtierra Sierra, María Victoria Baccharidinae Dioecy Head inflorescence Heterogamous Homogamous Reproductive biology |
| status_str | publishedVersion |
| title | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) |
| title_full | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) |
| title_fullStr | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) |
| title_full_unstemmed | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) |
| title_short | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) |
| title_sort | Capitulum and floret phenology in Baccharis aliena (Asteraceae, Astereae) |
| topic | Baccharidinae Dioecy Head inflorescence Heterogamous Homogamous Reproductive biology |
| url | https://hdl.handle.net/20.500.12008/26306 |