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The Occurrence of Trichomanes godmanii (Hymenophyllaceae) on Welfia georgii (Arecaceae) at the La Selva Biological Station, Costa Rica

Field observations suggested that the epiphytic fern Trichomanes godmanii occurred more frequently and abundantly on the trunks of the palm Welfia georgii than on the trunks of dicotyledonous trees. We tested this observation statistically by randomly selecting 25 individuals of W. georgii and the n... Full description

Journal Title: American fern journal 2004, Vol.94 (2), p.70-76
Main Author: Moran, Robbin C
Other Authors: Russell, Romina Vidal
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
Publisher: American Fern Society
ID: ISSN: 0002-8444
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recordid: cdi_crossref_primary_10_1640_0002_8444_2004_094_0070_TOOTGH_2_0_CO_2
title: The Occurrence of Trichomanes godmanii (Hymenophyllaceae) on Welfia georgii (Arecaceae) at the La Selva Biological Station, Costa Rica
format: Article
creator:
  • Moran, Robbin C
  • Russell, Romina Vidal
subjects:
  • Adhesives
  • Angiosperms
  • Epiphytes
  • Ferns
  • Hair
  • Null hypothesis
  • Regular
  • Rhizomes
  • Smooth surfaces
  • Species
  • Tree trunks
ispartof: American fern journal, 2004, Vol.94 (2), p.70-76
description: Field observations suggested that the epiphytic fern Trichomanes godmanii occurred more frequently and abundantly on the trunks of the palm Welfia georgii than on the trunks of dicotyledonous trees. We tested this observation statistically by randomly selecting 25 individuals of W. georgii and the nearest dicotyledonous tree of similar dbh, for a total of 50 trunks. For each trunk up to a height of three meters, we recorded the presence or absence of T. godmanii and, if present, we visually estimated percent cover using a ranked scale. We found that the fern occurred more frequently and abundantly on the palm than on dicotylendonous trees. No relationship was found between the diameter of the trunks and vegetative cover. This is one of the few host-specific preferences recorded among epiphytic ferns. We cannot fully explain why the fern occurs more frequently and abundantly on the trunks of Welfia georgii instead of dicot trees, but the fern's adhesive hairs on its rhizomes and petioles probably help attachment to the smooth trunk of the palm.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0002-8444
fulltext: fulltext
issn:
  • 0002-8444
  • 1938-422X
url: Link


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titleThe Occurrence of Trichomanes godmanii (Hymenophyllaceae) on Welfia georgii (Arecaceae) at the La Selva Biological Station, Costa Rica
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descriptionField observations suggested that the epiphytic fern Trichomanes godmanii occurred more frequently and abundantly on the trunks of the palm Welfia georgii than on the trunks of dicotyledonous trees. We tested this observation statistically by randomly selecting 25 individuals of W. georgii and the nearest dicotyledonous tree of similar dbh, for a total of 50 trunks. For each trunk up to a height of three meters, we recorded the presence or absence of T. godmanii and, if present, we visually estimated percent cover using a ranked scale. We found that the fern occurred more frequently and abundantly on the palm than on dicotylendonous trees. No relationship was found between the diameter of the trunks and vegetative cover. This is one of the few host-specific preferences recorded among epiphytic ferns. We cannot fully explain why the fern occurs more frequently and abundantly on the trunks of Welfia georgii instead of dicot trees, but the fern's adhesive hairs on its rhizomes and petioles probably help attachment to the smooth trunk of the palm.
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subjectAdhesives ; Angiosperms ; Epiphytes ; Ferns ; Hair ; Null hypothesis ; Regular ; Rhizomes ; Smooth surfaces ; Species ; Tree trunks
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abstractField observations suggested that the epiphytic fern Trichomanes godmanii occurred more frequently and abundantly on the trunks of the palm Welfia georgii than on the trunks of dicotyledonous trees. We tested this observation statistically by randomly selecting 25 individuals of W. georgii and the nearest dicotyledonous tree of similar dbh, for a total of 50 trunks. For each trunk up to a height of three meters, we recorded the presence or absence of T. godmanii and, if present, we visually estimated percent cover using a ranked scale. We found that the fern occurred more frequently and abundantly on the palm than on dicotylendonous trees. No relationship was found between the diameter of the trunks and vegetative cover. This is one of the few host-specific preferences recorded among epiphytic ferns. We cannot fully explain why the fern occurs more frequently and abundantly on the trunks of Welfia georgii instead of dicot trees, but the fern's adhesive hairs on its rhizomes and petioles probably help attachment to the smooth trunk of the palm.
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