Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America
Western Amazonian landscapes evolved dynamically during the Neogene. Large wetlands developed responding to Andean uplift what promoted the rise and diversification of many plant groups. One such group is the well-documented Malvoid pollen Malvacipolloides maristellae from the Miocene of northwester...
| Autor principal: | Espinosa, Bruno S. |
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| Outros Autores: | D'Apolito, Carlos, Silva-Caminha, Silane Aparecida Fda, Ferreira, Marcos Gonçalves, Absy, Maria Lúcia |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Review of Palaeobotany and Palynology
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/16521 |
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oai:repositorio:1-16521 |
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oai:repositorio:1-16521 Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America Espinosa, Bruno S. D'Apolito, Carlos Silva-Caminha, Silane Aparecida Fda Ferreira, Marcos Gonçalves Absy, Maria Lúcia Angiosperm Brackish Water Forest Cover Fossil Record Neogene Paleobiogeography Paleoecology Pollen Quaternary Reconstruction Relative Abundance Wetland Amazonia Andes Colombia South America Venezuela Allosidastrum Malvaceae Malvella Sphaeralcea Wissadula Western Amazonian landscapes evolved dynamically during the Neogene. Large wetlands developed responding to Andean uplift what promoted the rise and diversification of many plant groups. One such group is the well-documented Malvoid pollen Malvacipolloides maristellae from the Miocene of northwestern South America. In the present contribution, we compared the botanical affinity among fossil and extant Malvoid, reconstructed past distributions of the taxa and their relative abundance throughout the Neogene-Quaternary, and interpreted the biogeographical and paleoecology of the group. We found similar pollen morphologies among the fossil and 14 extant Malvoids, mainly Allosidastrum, Sphaeralcea, Monteiroa, Malvella, and Wissadula. These belong to the Malveae tribe (subtribes Abutilinae and Malvinae), which are extra-Amazonian, mostly found in drier-colder settings, in full light environments (savannahs, forest edges), and tolerating varied oligotrophic and hydric stress soils. We recorded widespread Miocene populations of the fossil, from western Amazonia to coastal Venezuela, with high abundances in the early Miocene, when the group first appeared, then dropped significantly from the late Miocene onwards. The gradual demise of M. maristellae is attributed to the negative effects of brackish water inundations and the gradual increase of humidity and forest cover following the decline of wetlands that narrowed the open, light-demanding ecological niche exploited by M. maristellae. In the Pliocene-Quaternary, no records were found in western Amazonia, attesting to its final displacement outside the forest structure. In its northern extension (Venezuela and Colombia), the fossil survived for longer due to available open-dry environments that developed in the latest Neogene. © 2019 Elsevier B.V. 2020-06-15T21:35:08Z 2020-06-15T21:35:08Z 2020 Artigo https://repositorio.inpa.gov.br/handle/1/16521 10.1016/j.revpalbo.2019.104131 en Volume 273 Restrito Review of Palaeobotany and Palynology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Angiosperm Brackish Water Forest Cover Fossil Record Neogene Paleobiogeography Paleoecology Pollen Quaternary Reconstruction Relative Abundance Wetland Amazonia Andes Colombia South America Venezuela Allosidastrum Malvaceae Malvella Sphaeralcea Wissadula |
| spellingShingle |
Angiosperm Brackish Water Forest Cover Fossil Record Neogene Paleobiogeography Paleoecology Pollen Quaternary Reconstruction Relative Abundance Wetland Amazonia Andes Colombia South America Venezuela Allosidastrum Malvaceae Malvella Sphaeralcea Wissadula Espinosa, Bruno S. Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America |
| topic_facet |
Angiosperm Brackish Water Forest Cover Fossil Record Neogene Paleobiogeography Paleoecology Pollen Quaternary Reconstruction Relative Abundance Wetland Amazonia Andes Colombia South America Venezuela Allosidastrum Malvaceae Malvella Sphaeralcea Wissadula |
| description |
Western Amazonian landscapes evolved dynamically during the Neogene. Large wetlands developed responding to Andean uplift what promoted the rise and diversification of many plant groups. One such group is the well-documented Malvoid pollen Malvacipolloides maristellae from the Miocene of northwestern South America. In the present contribution, we compared the botanical affinity among fossil and extant Malvoid, reconstructed past distributions of the taxa and their relative abundance throughout the Neogene-Quaternary, and interpreted the biogeographical and paleoecology of the group. We found similar pollen morphologies among the fossil and 14 extant Malvoids, mainly Allosidastrum, Sphaeralcea, Monteiroa, Malvella, and Wissadula. These belong to the Malveae tribe (subtribes Abutilinae and Malvinae), which are extra-Amazonian, mostly found in drier-colder settings, in full light environments (savannahs, forest edges), and tolerating varied oligotrophic and hydric stress soils. We recorded widespread Miocene populations of the fossil, from western Amazonia to coastal Venezuela, with high abundances in the early Miocene, when the group first appeared, then dropped significantly from the late Miocene onwards. The gradual demise of M. maristellae is attributed to the negative effects of brackish water inundations and the gradual increase of humidity and forest cover following the decline of wetlands that narrowed the open, light-demanding ecological niche exploited by M. maristellae. In the Pliocene-Quaternary, no records were found in western Amazonia, attesting to its final displacement outside the forest structure. In its northern extension (Venezuela and Colombia), the fossil survived for longer due to available open-dry environments that developed in the latest Neogene. © 2019 Elsevier B.V. |
| format |
Artigo |
| author |
Espinosa, Bruno S. |
| author2 |
D'Apolito, Carlos Silva-Caminha, Silane Aparecida Fda Ferreira, Marcos Gonçalves Absy, Maria Lúcia |
| author2Str |
D'Apolito, Carlos Silva-Caminha, Silane Aparecida Fda Ferreira, Marcos Gonçalves Absy, Maria Lúcia |
| title |
Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America |
| title_short |
Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America |
| title_full |
Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America |
| title_fullStr |
Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America |
| title_full_unstemmed |
Neogene paleoecology and biogeography of a Malvoid pollen in northwestern South America |
| title_sort |
neogene paleoecology and biogeography of a malvoid pollen in northwestern south america |
| publisher |
Review of Palaeobotany and Palynology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/16521 |
| _version_ |
1787143552680067072 |
| score |
11.755432 |