Abundance of arbuscular mycorrhizal fungi spores in different environments in a tropical rain forest, Veracruz, Mexico |
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Authors: | P Guadarrama F Javier Álvarez-Sánchez |
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Institution: | (1) Laboratorio de Ecología, Departamento de Biología, Facultad de Ciencias, UNAM, Circuito Exterior, Ciudad Universitaria 04510, Mexico, DF Fax: +52-5-622-4828, e-mail: pgc@hp.fciencias.unam.mx, MX |
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Abstract: | The aim of this study was to compare mycorrhizal abundance and diversity in sites with different regimes of disturbance in
a tropical rain forest at Los Tuxtlas, Veracruz, Mexico. Arbuscular mycorrhizal spores were quantified at two sites: closed
canopy and gaps in the forest. Data were recorded during dry, rainy, and windy ("nortes") seasons. Spores of eight Glomus species, sporocarps of three Sclerocystis species, three species of Acaulospora and two of Gigaspora were found. Significant differences in the number of species and spores were found among seasons. The highest numbers of
species and spores were observed during the dry season, with a marked decrease during the rainy season. Our results show that
disturbance does not but seasonality does affect abundance and richness of mycorrhizal spores in this tropical wet forest.
Accepted: 11 October 1998 |
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Keywords: | Arbuscular mycorrhizae Tropical rain forest Gaps Mexico |
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