IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Phenotypic variation in arid and semi-arid zones of southern South America: the case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)
Autor/es:
ROBBIATI, F.O.; AMARILLA, L.D. ; ANTON, A.M.; FORTUNATO, R.H.; ROBBIATI, F.O.; AMARILLA, L.D. ; ANTON, A.M.; FORTUNATO, R.H.
Revista:
BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2017 vol. 183 p. 454 - 473
ISSN:
0024-4074
Resumen:
Senna series Aphyllae includes xeromorphic shrubs and subshrubs that occur in three different biogeographicsubregionsin arid and semi-arid habitats of southern South America. The series provides a good opportunity to understandbetter 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 withinand among taxa. Statistical analyses of climatic and morphological data and geographical distribution were used tounderstand the patterns of morphological variation among 394 individuals and to clarify the taxonomic delimitationof entities that belong to series Aphyllae. Senna acanthoclada and S. nudicaulis were segregated from each otherand from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spinifloraand from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spiniflorasubregionsin arid and semi-arid habitats of southern South America. The series provides a good opportunity to understandbetter 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 withinand among taxa. Statistical analyses of climatic and morphological data and geographical distribution were used tounderstand the patterns of morphological variation among 394 individuals and to clarify the taxonomic delimitationof entities that belong to series Aphyllae. Senna acanthoclada and S. nudicaulis were segregated from each otherand from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spinifloraand from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spinifloraseries Aphyllae includes xeromorphic shrubs and subshrubs that occur in three different biogeographicsubregionsin arid and semi-arid habitats of southern South America. The series provides a good opportunity to understandbetter 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 withinand among taxa. Statistical analyses of climatic and morphological data and geographical distribution were used tounderstand the patterns of morphological variation among 394 individuals and to clarify the taxonomic delimitationof entities that belong to series Aphyllae. Senna acanthoclada and S. nudicaulis were segregated from each otherand from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spinifloraand from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spinifloraAphyllae. Senna acanthoclada and S. nudicaulis were segregated from each otherand from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spinifloraS. aphylla complex were delimited; S. spiniflorawas well-delimited and S. crassiramea and S. rigidicaulis were overlapping; S. pachyrrhiza was not differentiatedfrom S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditionsfor several species. The results of this work revealed that most morphological variability is associated with differentenvironmental conditions. This phenotypic plasticity may be caused by the presence of different environments withclimatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.for several species. The results of this work revealed that most morphological variability is associated with differentenvironmental conditions. This phenotypic plasticity may be caused by the presence of different environments withclimatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.from S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditionsfor several species. The results of this work revealed that most morphological variability is associated with differentenvironmental conditions. This phenotypic plasticity may be caused by the presence of different environments withclimatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.for several species. The results of this work revealed that most morphological variability is associated with differentenvironmental conditions. This phenotypic plasticity may be caused by the presence of different environments withclimatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.S. crassiramea and S. rigidicaulis were overlapping; S. pachyrrhiza was not differentiatedfrom S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditionsfor several species. The results of this work revealed that most morphological variability is associated with differentenvironmental conditions. This phenotypic plasticity may be caused by the presence of different environments withclimatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.for several species. The results of this work revealed that most morphological variability is associated with differentenvironmental conditions. This phenotypic plasticity may be caused by the presence of different environments withclimatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditionsfor several species. The results of this work revealed that most morphological variability is associated with differentenvironmental conditions. This phenotypic plasticity may be caused by the presence of different environments withclimatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.