Tropical Ecology and Conservation [Monteverde Institute]

Alternative Title

Helecho arborescente (Dicksoniaceae y cyatheaceae) alelopatía en el bosque nuboso



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Publication Date

December 2003


The purpose of this experiment was to look at the effects of Allelopathy between six species of tree ferns in the Monteverde Cloud Forest. We analyzed these effects by comparing plant abundances under the tree ferns to controls. We also compared controls to germination of seeds and spores grown with water or leachate made from the tree fern fronds. We found significantly higher plant abundances in controls than under the tree ferns. Also significantly less seed and spore germination than controls was found. There was not a significant difference between species of tree ferns in their inhibition of plants under the tree ferns. We did observe a difference in allelopathic effects on germinating tomato seeds and Dicksonia gigantea spores, though not for Lophosoria quadripinnata spores. These results lead us to conclude that Allelopathy in nature is affected by other factors such as facilitation or competition but different species of tree ferns do show differing levels of Allelopathy. Allelopathy in tree ferns inhibits spores more than seeds indicating that more closely related species inhibit each other more, at least in this case. Also we confirmed previous studies that found Allelopathy in tree ferns. El propósito de nuestro experimento debía mirar los efectos de alelopatía entre seis especies de helechos arborescentes. En el Bosque de Nube de Monteverde. Analizamos estos efectos comparando planta las abundancias bajo los helechos arborescentes a controles. Comparamos también los controles a la germinación de semillas y esporas crecidas con agua o leachate hizo de las trundas del helecho de árbol. Encontramos las abundancias apreciablemente más altas de planta en controles que bajo los helechos arborescentes. También apreciablemente menos germinación de semilla y espora que los controles se encontraron. No había una diferencia significativa entre la especie de helechos arborescentes en su inhibición de plantas bajo los helechos arborescentes. Observamos una diferencia en efectos de alelopatía a germinar las semillas de tomate y esporas de gigantea de Dicksonia, aunque no para esporas de quadripinnata de Lophosoria. Estos resultados nos dirigen a concluir ese allelopathy en la naturaleza es afectado por otros factores tales como facilitación o competencia pero la especie diferente de helechos arborescentes muestran difiriendo los niveles de alelopatía. También confirmamos los estudios previos que encontraron alelopatía en helechos arborescentes.


Ferns, Helechos, Allelopathy, Alelopatia, Costa Rica--Puntarenas--Monteverde Zone--Monteverde, Costa Rica--Puntarenas--Zona de Monteverde--Monteverde, CIEE Fall 2003, CIEE Otoño 2003


Student affiliation : Albertson College of Idaho University of Wisconsin- Madison Digitized by MVI

Subject: topical

Ferns; Helechos; Allelopathy; Alelopatia; CIEE Fall 2003; CIEE Otoño 2003

Subject: geographic

Costa Rica--Puntarenas--Monteverde Zone--Monteverde; Costa Rica--Puntarenas--Zona de Monteverde--Monteverde



Holding Location

Monteverde Institute MVI



Tree fern (Dicksoniaceae and Cyathaceae) allelopathy in the Monteverde cloud forest



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