| soil co2 flux and photoautotrophic community composition in high-elevation, 'barren' soil. | soil-dominated ecosystems, with little or no plant cover (i.e. deserts, polar regions, high-elevation areas and zones of glacial retreat), are often described as 'barren', despite their potential to host photoautotrophic microbial communities. in high-elevation, subnival zone soil (i.e. elevations higher than the zone of continuous vegetation), the structure and function of these photoautotrophic microbial communities remains essentially unknown. we measured soil co(2) flux at three sites (above ... | 2009 | 19187281 |
| phylogenetic and morphological diversity of cyanobacteria in soil desert crusts from the colorado plateau. | we compared the community structures of cyanobacteria in four biological desert crusts from utah's colorado plateau developing on different substrata. we analyzed natural samples, cultures, and cyanobacterial filaments or colonies retrieved by micromanipulation from field samples using microscopy, denaturing gradient gel electrophoresis, and sequencing of 16s rrna genes. while microscopic analyses apparently underestimated the biodiversity of thin filamentous cyanobacteria, molecular analyses fa ... | 2001 | 11282648 |