Table 1.

Overview on the occurrence of epiphyte species on three host tree species in 0·4 ha of the San Lorenzo crane plot in relation to a null assemblage deduced from the local epiphyte pool

Species	Family	Socratea	Marila	Perebea
Aechmea tillandsioides	Bromeliaceae	0	+	+
Ananthacorus angustifolius	Vittariaceae	+	0	+
Anthurium acutangulum	Araceae	0	+	0
Anthurium clavigerum	Araceae	+	+	0
Anthurium friedrichsthalii	Araceae	0	+	0
Anthurium hacumense	Araceae	0	+	0
Asplenium juglandifolium	Aspleniaceae	−	−	0
Asplenium serratum	Aspleniaceae	+	0	0
Campylocentrum micranthum	Orchidaceae	0	+	+
Campyloneurum occultum	Polypodiaceae	−	0	0
Catasetum viridiflavum	Orchidaceae	0	+	0
Codonanthe macradenia	Gesneriaceae	0	+	+
Columnea billbergiana	Gesneriaceae	+	0	0
Dichaea panamensis	Orchidaceae	−	+	0
Dicranoglossum panamense	Polypodiaceae	+	+	+
Elaphoglossum herminieri	Lomariopsidaceae	−	−	0
Elaphoglossum latifolium	Lomariopsidaceae	0	−	0
Elaphoglossum sporadolepis	Lomariopsidaceae	−	0	−
Encyclia fragrans	Orchidaceae	+	0	0
Epidendrum imatophyllum	Orchidaceae	0	+	0
Epidendrum nocturnum	Orchidaceae	+	0	0
Gongora quinquenervis	Orchidaceae	0	+	+
Guzmania subcorymbosa	Bromeliaceae	+	0	0
Maxillaria uncata	Orchidaceae	−	−	−
Microgramma lycopodioides	Polypodiaceae	0	+	0
Microgramma reptans	Polypodiaceae	0	+	0
Niphidium crassifolium	Polypodiaceae	0	−	−
Ornithocephalus bicornis	Orchidaceae	0	+	0
Peperomia rotundifolia	Piperaceae	0	+	0
Pleurothallis brighamii	Orchidaceae	−	−	−
Polypodium percussum	Polypodiaceae	0	−	0
Scaphyglottis graminifolia	Orchidaceae	−	−	−
Scaphyglottis longicaulis	Orchidaceae	0	−	−
Scaphyglottis prolifera	Orchidaceae	−	0	−
Sobralia fragrans	Orchidaceae	+	0	0
Stelis crescentiicola	Orchidaceae	0	−	0
Tillandsia anceps	Bromeliaceae	+	+	+
Tillandsia bulbosa	Bromeliaceae	0	−	0
Trichomanes angustifrons	Hymenophyllaceae	+	+	+
Trichomanes ekmannii	Hymenophyllaceae	0	+	+
Trichomanes nummularium	Hymenophyllaceae	−	−	−
Trichomanes ovale	Hymenophyllaceae	0	0	+
Trichosalpinx orbicularis	Orchidaceae	−	−	−
Vriesea gladioliflora	Bromeliaceae	+	0	+

Species more frequent on a given host tree species than expected by random distribution are indicated with ‘+’; species less frequent are indicated with ‘−’; species occurring in a frequency as expected by random distribution are indicated with ‘0’. Excluded are the 59 species occurring in all three focal tree species in a frequency as expected by random distribution.

For a detailed analysis of host preference compare Appendices 1–3.