SciELO - Scientific Electronic Library Online

 
vol.13 número1VALORACIÓN CULTURAL DEL USO E IMPORTANCIA DE LA FAUNA SILVESTRE EN CAUTIVIDAD EN TRES BARRIOS DE PEREIRA (RISARALDA) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Boletín Científico. Centro de Museos. Museo de Historia Natural

versión impresa ISSN 0123-3068

Resumen

RAMIREZ-VALENCIA, Valentina; SANIN, David  y  ALVAREZ-MEJIA, Luís Miguel. ESTIMATING THE GROWTH OF DICKSONIA SELLOWIANA Hook., (Dicksoniaceae Hook.), IN THE RIO BLANCO FOREST PROTECTIVE RESERVE (MANIZALES, CALDAS) AND COLOMBIAN FERTILITY RECORDS. Bol. Cient. Mus. Hist. Nat. Univ. Caldas [online]. 2009, vol.13, n.1, pp.17-29. ISSN 0123-3068.

In order to analyze the growth of tree ferns in the Cordillera Central, between March 2006 and February 2007, the population of Dicksonia sellowiana in the Rio Blanco Reserve (Manizales, Caldas) was monitored. The DAP, total height, leaf number and reproductive status were recorded quarterly. This information was related to precipitation and compared with specimens deposited in the COL, HUA and FAUC herbaria. The diameter increased by 1.2 cm, especially in the first 2007 season. The height growth of the stem was 6.7 cm, with the same trend. The leaf number was stable with 9 initial leaves. Only plants with a height greater than 4 m were fertile. The results showed that D. sellowiana answers to a bimodal seasonal phenological pattern determined by rainfall, coinciding with the increased sporulation recorded in herbarium specimens. Similarly, the growth in the stem was similar to other Cyatheales species, mainly Alsophila. The emission and accumulation of leaves were seen in continuous "double leaf" modules, an adaptive strategy in the high Andean ecosystems, where the accumulated organic matter of slow decomposition stabilizes the microclimate. These arguments provide a basis for the development of conservation programs from the study and sustainable management of natural populations.

Palabras clave : Growth Estimation; Dicksonia sellowiana; Rio Blanco Reserve; fertility in Colombia.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons