Soil physico-chemical properties affecting the distribution of biological soil crusts along an environmental transect at Zapotitlán drylands, Mexico |
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| Authors: | V Rivera-Aguilar H Godínez-Alvarez R Moreno-Torres S Rodríguez-Zaragoza |
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| Institution: | aLaboratorio de Microbiología, Unidad de Biología, Tecnología y Prototipos, Facultad de Estudios Superiores Iztacala, UNAM, Av. de los Barrios 1, Los Reyes Iztacala, Tlalnepantla 54090, Estado de México, Mexico;bLaboratorio de Ecología, Unidad de Biología Tecnología y Prototipos, Facultad de Estudios Superiores Iztacala, UNAM, Av. de los Barrios 1, Los Reyes Iztacala, Tlalnepantla 54090, Estado de México, Mexico |
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| Abstract: | The composition of cyanobacteria, mosses, and lichens of biological soil crusts were correlated with soil characteristics and sun exposure along an environmental transect. The study was conducted in Zapotitlán drylands, a locality within the Tehuacán–Cuicatlán Valley, central Mexico, where a great variety of environments for crust development exist due to landscape fragmentation. Data were analyzed with redundancy and Sorensen analysis. Soil crusts consisted of different combinations of cyanobacteria (7 species), mosses (19 species), and lichens (8 species). The relative frequencies of these groups were positively correlated with soil apparent density and lichens were also positively correlated with soil pH. However, there were no significant correlations with sun exposure. |
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| Keywords: | Placydium squamulosum Pseudocrossidium replicatum Redundancy analysis Scytonema javanicum Sorensen analysis Species composition and distribution Soil properties Tehuacá n– Cuicatlá n Valley |
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