Especificidad de forófito y preferencias microambientales de los líquenes cortícolas en cinco forófitos del bosque premontano de finca Zíngara, Cali, Colombia

Abstract

Especificidad de forófito y preferencias microambientales de los líquenes cortícolas en cinco forófitos del bosque premontano de finca Zíngara, Cali, Colombia Abstract: Phorophyte specificity and microenvironmental preferences of corticolous lichens in five phorophyte species from premontane forest of Finca Zíngara, Cali, Colombia). Lichenized fungi or lichens are organisms that have been little studied in the tropics and which distribution is affected by microenvironmental factors and substrate characteristics. The present study aimed to identify phorophyte specificity and microenvironmental preferences of corticolous lichens in five phorophyte species from premontane forest of the farm Finca Zingara in Cali, Colombia. For this, five individuals were selected from five tree species (phorophytes). Lichen species present in a 0.50x0.20m 2 quadrant located in the trunk of each tree at a height of 1.3m were identified. Substrate parameters such as bark pH, Diameter Breast Height (DBH) and bark structure were measured. Also, microenvironmental factors including temperature, humidity and irradiance were determined. In order to detect phorophyte preferences, a non-metric multidimensional scaling (NMS) and indicator species analysis were made. Spearman correlation analysis was used to assert the relationship between environmental variables and groupings found in the NMS. A total of 69 species of lichens were found, of which 37 were identified to species, 18 to genera and 14 were not determined because they were sterile or had no spores. NMS showed that some individuals of the same tree species were grouped alongside the analysis dimensions, and they were related with the factors of light intensity, temperature and DBH. Only three lichens with preference for certain tree species were found (Arthonia microsperma by Meriania sp., Cladonia ceratophylla and sorediado 8 by Clusia sp.), suggesting absence of phorophyte preferences. Thus, it can be concluded that lichens from the study area do not show phorophyte preference, but their distribution is affected by light, temperature and DBH. Rev. Biol. Trop. 60 (2): 843-856. Epub 2012 June 01.

Corticolous lichens as environmental indicators of natural sulphur emissions near the sulphur mine El Vinagre (Cauca, Colombia)

“…2007; Soto Medina et al . 2012). However, we also found deterministic patterns correlated with distance from the source of pollution.…”

“…The following parameters were measured or estimated: bark pH (measured in a suspension of 1 g bark in 40 ml of distilled water using an Orion 3-Star benchtop Thermo pH meter; Soto Medina et al . 2012), DBH and distance from sulphur source. Bark pH was used as a proxy for atmospheric sulphur levels.…”

Epiphytes from a forest type transition zone in the Choco biogeographic region, Valle del Cauca, Colombia

“…Thus, the variation in lichens coverage, as a result of differences in the input light to the trees, affected the assembly of nonvascular epiphytes in the 43 trees, as also did it the position along the road. The nonvascular epiphytes assembly is clearly defined by the light entry (Soto-Medina et al, 2011;Benítez, Prieto, González, & Aragón, 2012). The effect of position along the road, is related to the effect of the transition zone between tropical moist forest and tropical dry forest; this is revealed by the presence in zone 5 and 6 of common species in dry forest (Coenogonium magdalenae Rivas Plata, Lücking & Lizano, Porina imitatrix Müll.…”

USO DE BIOTIPOS DE LÍQUENES COMO BIOINDICADORES DE PERTURBACIÓN en fragmentos de BOSQUE ALTOandino (reserva biolÓGica “encenillo”, colombia)

“…Para regiones tropicales, existen pocos trabajos cuantitativos sobre la ecología de líquenes (Cornelissen & Ter Steege 1989, Coppins & Wolseley 2002, Boonpragob & Polyiam 2007, Holz & Gradstein 2005, Cáceres et al 2007; sin embargo, varios se han enfocado en los Andes del Norte de Sudamérica y particularmente en Colombia (Sipman 1989, Wolf 1995, Nöske 2005, Soto-Medina et al 2012, 2015, Moncada et al 2014, Díaz-Escandón et al 2016). …”