Anne Elliott's photos with the keyword: bacteria

Not sure if this is Emerald Pool or Rainbow Pool! I've seen a lot of photos that name it as Rainbow Pool, but just found others that name it Emerald, which makes more sense to me. Continued research is needed! Think that maybe Emerald is the correct one. "Temperature 154.6°F Dimensions 27x38 feet. Depth 25 feet. Named for its emerald green color, it is one of the main attractions at Black Sand Basin. The color is the result of lower temperatures which have allowed yellow bacteria and algae to grow on the lining of the pool. The clear water of the pool reflects the blues but absorbs the other hues of the color spectrum. The combination of blue and yellow then produces green. Objects thrown into the pool and natural debris have caused a further decrease in temperature, resulting in a change of bacteria and algae growth and thus a change of color. The edge of the pool is now orange and brown. If the temperature continues to decrease, the pool may lose its emerald color." www.yellowstonenationalpark.com/blacksand.htm

Taken on the third day (13 September 2012) of a week's trip with great friends from England, down to Yellowstone National Park and Grand Teton National Park. This beautiful pool is located at the Black Sand Basin. I still have so many photos to go through from this holiday, and am trying to slip the occasional one on to my photostream. "Temperature 154.6°F Dimensions 27x38 feet. Depth 25 feet. Named for its emerald green color, it is one of the main attractions at Black Sand Basin. The color is the result of lower temperatures which have allowed yellow bacteria and algae to grow on the lining of the pool. The clear water of the pool reflects the blues but absorbs the other hues of the color spectrum. The combination of blue and yellow then produces green. Objects thrown into the pool and natural debris have caused a further decrease in temperature, resulting in a change of bacteria and algae growth and thus a change of color. The edge of the pool is now orange and brown. If the temperature continues to decrease, the pool may lose its emerald color." www.yellowstonenationalpark.com/blacksand.htm

I love the almost painted effect of this beautiful formation, seen at Mammonth Hot Springs. Taken on 12 September 2012, during a holiday to Yellowstone National Park and Grand Teton National Park. "Bacteria and algae create the streaks of color on Orange Spring Mound. It is noticeably different from many of the other terrace formations nearby. Its large mounded shape is the result of very slow water flow and mineral deposition." Heat dwelling bacteria and algae grow abundantly in Orange Spring Mound's water creating tapestries of "living color", as seen in the photo above. If you have time, it's quite an interesting photo to see in original size.

Some of the amazing natural colours formed around many of the hot springs and geysers in Yellowstone National Park. Taken at Fountain Paint Pots Trail, Lower Geyser Basin, on 13 September 2012, the third day of a wonderful week's trip with my amazing friends from England, Linda and Tony. "Bacteria and other thermophiles (heat loving microorganisms) usually form the ribbons of color like you see here. Green, brown, and orange mats are cyanobacteria, which can live in waters as hot as 167 F (73 C). At this temperature they are usually yellow-green. They become orange, rust, or brown as the water cools. In cooler water other thermophiles may appear that will modify the colors even more. Color may also change due to stress, such as the intense sunlight of mid summer." www.nps.gov/features/yell/tours/fountainpaint/bacteria.htm