INVESTIGADORES
KELLER Hector Alejandro
artículos
Título:
Cerrados in Argentina? Structure, diversity and biogeography of the woody component of a savanna in the Misiones Province
Autor/es:
VELAZCO, S. J. E., F. GALV�O, H. A. KELLER & N. A. BEDRIJ
Revista:
RODRIGUESIA
Editorial:
Jard¨ªn Bot¨¢nico de R¨ªo do janeiro
Referencias:
Lugar: R¨ªo de Janeiro; Año: 2018 vol. 69 p. 335 - 335
ISSN:
0370-6583
Resumen:
The Tey¨² Cuar¨¦ field, in Misiones province, Argentina, has been renowned for its flora and physiognomy, which led researchers to indicate that it could be a relict of Cerrado biome. We analyzed the floristic structure of the woody component of a savanna community in this site, and discussed the processes that could contribute to the permanence of this vegetation type over time. Perimeter and height of all woody individuals ¡Ý 10 cm of perimeter at soil height were collected in 12 square plots (400 m2 each one). We found 15 families and 17 species in our site and compared the woody flora surveyed at this site with the flora of other Cerrado areas from Brazil and Paraguay. Leptolobium elegans had the highest importance value. The woody flora of the area is closely related to the Cerrado areas from Paran¨¢ state in Brazil and Canindey¨² and Amambay in Paraguay. This site probably reflects old open physiognomies which were predominant in Misiones and Southern of Brazil in the late Pleistocene and middle Holocene. We inferred that the permanence of open physiognomies at Tey¨² Cuar¨¦ is probably related to mechanisms that act at different levels, such as geological, edaphic, anthropic, and fire disturbance
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