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Abstract Detail


Bryological and Lichenological Section/ABLS

Barcenas-Peña, Alejandrina [1], Herrera-Campos, Maria A. [2], Campos-Villa Nueva, Alvaro [3], Miranda, Ricardo [4], Luecking, Robert [5].

Diversity of foliicolous lichen on the understory and canopy of the rain forest “Los Tuxtlas”, Veracruz, Mexico.

In Mexico several studies have been carried out on foliicolous lichens which produced a list of 293 species. There is also a study identifying phorophyte preferences of some species. Other works deal with the comparison of lichen diversity along an altitudinal gradient. The present study approaches the difference in foliicolous lichen species composition between the understory and the canopy of Los Tuxtlas rain forest. These strata of the forest offer to foliicolous lichens different environmental conditions such as exposition light and humidity. Specimens were collected from the understory and canopy on every tree present in an area of 80 m2 every 50 m along a 500 m transect. Light exposure and humidity were also measured at each point. Species diversity and frequency of the species for each stratum was obtained. The highest values species diversity were found on the understory. Some canopy typical species such as Logilvia gilva, Porina fulvella, and Gyalectidium minus were identified. On the other hand Porina epiphylla, Porina karnatakensis, Porina rubentior, and Strigula nitidula were the most frequent species on the understory. Finally, Gyalectidium filicinum, Gyalideopsis vulgaris, Porina subnitidula, and Tricharia vainioi were present in both strata.


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1 - Universidad Nacional Autonoma de Mexico, Botanica, Tercer circuito ext. Ciudad Universitaria, Distrito Federal, Distrito Federal, 04510, Mexico
2 - Universidad Nacional Autonoma de Mexico , Instituto de Biologia, Departamento de Botanica, Apdo. Postal 70-233, Coyoacan, Mexico, D. F., 04510, Mexico
3 - Universidad Nacional Autonoma de Mexico, Botanica, Tercer circuito ext. Ciudad Universitaria, Coyoacan, Distrito Federal, 04510, Mexico
4 - Universidad Nacional Autónoma de México, Departamento de Botánica, Instituto de Biología, Tercer Circuito Exterior, Cd. Universitaria,, México, D.F., 04510, México
5 - The Field Museum, 2Department of Botany, 1400 South Lake Shore Drive, Chicago, Illinois, 60605-2496, USA

Keywords:
foliicolous lichen
species diversity
understory and canopy .

Presentation Type: Poster:Posters for BSA Sections
Session: P2
Location: Event Tent/Cliff Lodge
Date: Tuesday, July 28th, 2009
Time: 5:30 PM
Number: P2BL002
Abstract ID:897


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