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Effect of burning on a montane mire in the Cordillera de Talamance, Costa Rica

by Horn, S.P.
Publisher: 1988ISSN: 0304-3711.Subject(s): INCENDIOS FORESTALES | ECOLOGIA DEL FUEGO | TURBERAS | VEGETACION | REGENERACION NATURAL | SINECOLOGIA | COSTA RICA | FOREST FIRES | FIRE ECOLOGY | PEATLANDS | VEGETATION | NATURAL REGENERATION | SYNECOLOGY | COSTA RICA | INCENDIE DE FORET | ECOLOGIE DU FEU | TOURBIERE | VEGETATION | REGENERATION NATURELLE | SYNECOLOGIE | COSTA RICA In: Brenesia (Costa Rica) (no.30) p. 81-92Summary: Postfire vegetation was studied 1 yr after burning, in April-May 1985. The dominant cycad-like arborescent fern. Blechnum buchtienii, and the most common shrubs (Vaccinium consanguineum, Pernettia coriacea and Hesperomeles heterophylla) showed high survival rates. Some 85 percent of the burned B. buchtienii produced new fronds from stem apices, and 60 percent of the burned shrubs resprouted from their bases. One year after burning shrub cover had reached 36 percent and herb cover 26.5 percent. This is a slow rate in comparisonwith succession in the lowland tropics, but growth and colonization rates were similar to those measured on clearings within the montane rain forest in Costa Rica and elfin woodland in Puerto Rico. The regeneration was more rapid than in a burn site of the same age within the floristically similar paramo shrublands at higher altitudes in the Cordillera de Talamanca.
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Postfire vegetation was studied 1 yr after burning, in April-May 1985. The dominant cycad-like arborescent fern. Blechnum buchtienii, and the most common shrubs (Vaccinium consanguineum, Pernettia coriacea and Hesperomeles heterophylla) showed high survival rates. Some 85 percent of the burned B. buchtienii produced new fronds from stem apices, and 60 percent of the burned shrubs resprouted from their bases. One year after burning shrub cover had reached 36 percent and herb cover 26.5 percent. This is a slow rate in comparisonwith succession in the lowland tropics, but growth and colonization rates were similar to those measured on clearings within the montane rain forest in Costa Rica and elfin woodland in Puerto Rico. The regeneration was more rapid than in a burn site of the same age within the floristically similar paramo shrublands at higher altitudes in the Cordillera de Talamanca.

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