INVESTIGADORES
FERNANDEZ HONAINE mariana
artículos
Título:
Phytolith analysis of Chusquea ramosissima Lindm. (Poaceae: Bambusoideae) and associated soils.
Autor/es:
MONTTI, LÍA; FERNÁNDEZ HONAINE, MARIANA; OSTERRIETH, MARGARITA; GRACIANO RIBEIRO, DALVA
Revista:
QUATERNARY INTERNATIONAL
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2009 vol. 193 p. 80 - 89
ISSN:
1040-6182
Resumen:
Chusquea ramosissima Lindm. is dominant in the understory of the Misiones province forests
(Argentina); it colonizes open natural areas and gaps created by timber extraction. The aim of this study is to
analyze both the phytolith assemblage produced by leaves, culms, and roots of Chusquea ramosissima and
the one deposited on soil surface. This information will be used in future phytolith studies of the Misiones
forest soils, which will contribute to understanding the dynamics of this species in the past. Phytoliths were
extracted from plant organs by using a calcination technique and morphotypes were identified in plant tissue
by anatomical observations. Soil samples were collected from two sites with a different history of use and
vegetal cover. The three organs produced different phytolith morphotypes; leaf was the main producer. From
the soil samples, only leaf phytoliths were observed. Although concave dumb-bells are the characteristic
phytoliths of Chusquea ramosissima, their greater robustness and higher preservation in soil - even where
this species is nowadays absent - do not help to discriminate clearly between sites with and without this
species. On the other hand, the panicoid dumb-bell (bilobated flat/concave ends short cell) and Chusquea
bulliform (cubic/parallepipedal bulliform cell) phytoliths seem to be more sensitive to changes in the
presence/absence of this species. Results from this research will provide useful information for future
studies of late Pleistocene-Holocene reconstruction in this region.