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The importance of tree species and size for the epiphytic bromeliad Fascicularia bicolor in a South-American temperate rainforest (Chile)

Gabriel Ortega-Solís (1-5)   , Iván Díaz (2), Daniela Mellado-Mansilla (2), Ricardo Moreno-González (3), Javier Godoy (2), Horacio Samaniego (4)

iForest - Biogeosciences and Forestry, Volume 13, Issue 2, Pages 92-97 (2020)
doi: https://doi.org/10.3832/ifor2710-013
Published: Mar 10, 2020 - Copyright © 2020 SISEF

Short Communications


Bromeliads are a numerous family of vascular epiphytes, though only one epiphytic species inhabits South-American temperate rainforests: the endemic Fascicularia bicolor. This bromeliad is an important driver of canopy biodiversity, but attributes of its hosts are mostly unknown. Here we report (i) the tree species colonized by F. bicolor, (ii) the relationship between tree size and presence of F. bicolor and (iii) the relation between tree size and the number of mats of F. bicolor inhabiting each colonized tree. We sampled 231 trees in seven forest plots recording their species, diameter, heights, and the number of F. bicolor mats growing on them. The dataset was analyzed with a zero-inflated model to relate host tree attributes with F. bicolor occurrence and abundance in a single statistical approach. The occurrence and abundance of F. bicolor depend on host-species identity and diameter. F. bicolor colonization in slow-growing trees started at smaller DBH than that required for other tree species. Nonetheless, the overall occurrence of F. bicolor relies on large trees above 50 cm DBH for most host species. The number of mats occurring on each colonized tree depends on the interaction between tree height and species suggesting the importance of space available for colonization along the tree-trunk, and differential effects due to species’ traits. Currently, large trees and old-growth forests are scarce within the distribution range of F. bicolor, which could seriously affect the long-term conservation of this endemic epiphyte, along with the canopy properties and species associated with it.

  Keywords


Forest Canopy, Epiphytes, Bromeliads, South American Temperate Forests

Authors’ address

(1)
Gabriel Ortega-Solís 0000-0002-0516-5694
Unidad de Gestión Ambiental, Dirección de Servicios, Vicerrectoría de Gestión Económica y Administrativa, Universidad Austral de Chile, Las Encinas 220, Valdivia (Chile)
(2)
Iván Díaz 0000-0002-0679-9576
Daniela Mellado-Mansilla
Javier Godoy
Laboratorio de Biodiversidad y Ecología del Dosel, Instituto de Conservación, Biodiversidad y Territorio, Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Independencia 641, Valdivia (Chile)
(3)
Ricardo Moreno-González 0000-0002-7407-4542
Department of Palynology and Climate Dynamics, Albrecht-von-Haller-Institute for Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073 Göttingen (Germany)
(4)
Horacio Samaniego 0000-0002-2485-9827
Laboratorio de Ecoinformática, Instituto de Conservación, Biodiversidad y Territorio, Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Independencia 641, Valdivia (Chile)
(5)
Gabriel Ortega-Solís 0000-0002-0516-5694
Escuela de Graduados, Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Independencia 641, Valdivia (Chile)

Corresponding author

 
Gabriel Ortega-Solís
g.ortega.solis@gmail.com

Citation

Ortega-Solís G, Díaz I, Mellado-Mansilla D, Moreno-González R, Godoy J, Samaniego H (2020). The importance of tree species and size for the epiphytic bromeliad Fascicularia bicolor in a South-American temperate rainforest (Chile). iForest 13: 92-97. - doi: 10.3832/ifor2710-013

Academic Editor

Michele Carbognani

Paper history

Received: Dec 08, 2017
Accepted: Jan 04, 2020

First online: Mar 10, 2020
Publication Date: Apr 30, 2020
Publication Time: 2.20 months

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