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Stanton Repeat Photography

Mile 130.5, Bedrock Canyon, Up Canyon View from River Right (Stake 2331)

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Stake 2331, 22 February 1890 View Larger Image
22 February 1890
Before running Bedrock Rapid, at that time a minor reach of whitewater, Stanton climbed to a ledge overlooking the river and took this photograph of Bedrock Canyon. His railroad would span this canyon on a bridge from the sandy, grassy slope on the right to the rocky slope on the left, with its sparse cover of Mormon tea. A few barrel and pricklypear cactus occur on these slopes.
Photo credit: Robert B. Stanton, 57-RS-572, courtesy of The National Archives

Stake 2331, 17 February 1991 View Larger Image
17 February 1991
A century later, many of the same Mormon tea appear on the slope, but many more barrel cacti are now present and cacti in general have increased. Grizzlybear pricklypear cacti remain in the same places, which reflects a persistence based on clonal reproduction instead an individual long-lived plant. On the other hand, one claretcup cactus does appear to have persisted at one point on the left slope.
Photo credit: Gary B. Bolton

Stake 2331, 24 September 2010 View Larger Image
24 September 2010
The barrel cacti and pricklypear continue to increase while the Mormon tea continue to persist. Several clumps of claretcup cactus also persist. Overall, this view reflects both the stable desert shrub framework that pervades most of the river corridor while species thought to have been limited by severe freezes continue to increase.
Photo credit: Clavey Wendt

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