Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)

Senna series Aphyllae includes xeromorphic shrubs and subshrubs that occur in three different biogeographic subregions in arid and semi-arid habitats of southern South America. The series provides a good opportunity to understand better the relationship among geographical, climatic, and morphologica...

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Detalles Bibliográficos
Publicado: 2017
Materias:
Ecological niche modelling
Geographical distribution
Multivariate analysis
Taxonomic status
Caesalpinioideae
Fabaceae
Senna
Senna crassiramea
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244074_v183_n3_p454_Robbiati
http://hdl.handle.net/20.500.12110/paper_00244074_v183_n3_p454_Robbiati
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00244074_v183_n3_p454_Robbiati
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spelling paper:paper_00244074_v183_n3_p454_Robbiati2023-06-08T14:52:22Z Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae) Ecological niche modelling Geographical distribution Multivariate analysis Taxonomic status Caesalpinioideae Fabaceae Senna Senna crassiramea Senna series Aphyllae includes xeromorphic shrubs and subshrubs that occur in three different biogeographic subregions in arid and semi-arid habitats of southern South America. The series provides a good opportunity to understand better the relationship among geographical, climatic, and morphological variation in different taxa. Moreover, in this group the specific and varietal delimitation is still problematic due to the high morphological variation within and among taxa. Statistical analyses of climatic and morphological data and geographical distribution were used to understand the patterns of morphological variation among 394 individuals and to clarify the taxonomic delimitation of entities that belong to series Aphyllae. Senna acanthoclada and S. nudicaulis were segregated from each other and from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spiniflora was well-delimited and S. crassiramea and S. rigidicaulis were overlapping; S. pachyrrhiza was not differentiated from S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditions for several species. The results of this work revealed that most morphological variability is associated with different environmental conditions. This phenotypic plasticity may be caused by the presence of different environments with climatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province. © 2017 The Linnean Society of London. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244074_v183_n3_p454_Robbiati http://hdl.handle.net/20.500.12110/paper_00244074_v183_n3_p454_Robbiati
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ecological niche modelling
Geographical distribution
Multivariate analysis
Taxonomic status
Caesalpinioideae
Fabaceae
Senna
Senna crassiramea
spellingShingle Ecological niche modelling
Geographical distribution
Multivariate analysis
Taxonomic status
Caesalpinioideae
Fabaceae
Senna
Senna crassiramea
Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
topic_facet Ecological niche modelling
Geographical distribution
Multivariate analysis
Taxonomic status
Caesalpinioideae
Fabaceae
Senna
Senna crassiramea
description Senna series Aphyllae includes xeromorphic shrubs and subshrubs that occur in three different biogeographic subregions in arid and semi-arid habitats of southern South America. The series provides a good opportunity to understand better the relationship among geographical, climatic, and morphological variation in different taxa. Moreover, in this group the specific and varietal delimitation is still problematic due to the high morphological variation within and among taxa. Statistical analyses of climatic and morphological data and geographical distribution were used to understand the patterns of morphological variation among 394 individuals and to clarify the taxonomic delimitation of entities that belong to series Aphyllae. Senna acanthoclada and S. nudicaulis were segregated from each other and from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spiniflora was well-delimited and S. crassiramea and S. rigidicaulis were overlapping; S. pachyrrhiza was not differentiated from S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditions for several species. The results of this work revealed that most morphological variability is associated with different environmental conditions. This phenotypic plasticity may be caused by the presence of different environments with climatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province. © 2017 The Linnean Society of London.
title Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
title_short Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
title_full Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
title_fullStr Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
title_full_unstemmed Phenotypic variation in arid and semi-arid zones of southern South America: The case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
title_sort phenotypic variation in arid and semi-arid zones of southern south america: the case of senna series aphyllae (fabaceae, caesalpinioideae)
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244074_v183_n3_p454_Robbiati
http://hdl.handle.net/20.500.12110/paper_00244074_v183_n3_p454_Robbiati
_version_ 1768546384034660352

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