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A hyperaline pond, (Area 6) in the Exportadora de Sal saltern system, Guerrero Negro, Baja California Sur, Mexico. Thick microbial mats line the bottom of this entire pond.
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Sunset over the dike between Area 4 and Area 5, Exportadora de Sal hyperaline ponds, Guerrero Negro, Baja California Sur, Mexico. The bottom of both of these hypersaline ponds are lined with thick microbial mats.
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A cross sectional view of a microbial mat collected from Area 4, near the dike between Area 4 and Area 5 (see above). The smallest graduations in the ruler on the left side of the photograph are millimeters.
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Close-up cross sectional view of a microbial mat collected from Area 4, near the dike between Area 4 and Area 5 (see above). The smallest graduations in the ruler on the left side of the photograph are millimeters.
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The surface of a microbial mat collected from Area 4, in the Exportadora de Sal saltern system in Guerrero Negro, Baja California Sur, Mexico. The complexity of the surface can be seen. The white areas are microbial populations that appear to occupy the highest spots on the mat.
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An intertidal area near the salterns managed by Exportadora de Sal, Guerrero Negro, Baja California Sur, Mexico. Microbial mats cover almost the entire area seen in the photograph (marsh grass and the waters of Ojo de Liebre Lagoon can be seen in the very background). The bumpy microbial mat in the foreground is dominated by the cyanobacterium Calothrix sp. whereas the smoother mat is dominated by another cyanobacterium (Lyngbya sp).
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Lyngbya sp. dominated microbial mat. Some of the mat has been ripped up and torn, revealing the underlying sediment.
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A cross sectional view of a microbial mat collected from the natural area adjacent to the Exportadora de Sal saltern system (see above). The smallest graduations in the ruler on the left side of the photograph are millimeters.
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Area 9, in the Exportadora de Sal saltern system (see above). Precipitated gypsum can be seen just under the surface of the water. Laminated microbial communties can be seen within much of this gypsum (see below).
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A laminated microbial community located within precipitated gypsum in Area 9 of the Exportadora de Sal saltern system (see above). The colored bands, and precipitated gypsum above them, are about 3 centimeters thick.
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