A Change of Pace: Autumn in Yosemite Valley

I tried to hold onto summer as long as could. I tried to deny that summer would ever leave me. But the truth is upon us: summer is gone and autumn is here to stay, for a while.

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The magnificent Milkweed, spreading its seed for next year.

The nights are cooler, the days are shorter, the Big Dipper is hiding behind the granite walls, and not only are the leaves starting to drop but also the number of visitors. Yosemite Valley seems to be a bounty of endless beauty with each passing day and change in season.

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A large Black Oak, behind the Ahwahnee Hotel.

Although Yosemite is  well-known for its evergreen trees: Giant Sequoias, Pines, Cedars, and Firs, Yosemite does host a variety of deciduous trees as well. From Oaks, to Maples and Dogwoods- these trees give us our fall colors. Some trees seem to burst with excitement and color as fall creeps in, but what causes these changes in color each year?

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Black Oak leaves, showing their range of colors.

This change of color is due to a breakdown in the green pigment found in leaves: chlorophyll. Chlorophyll helps the leaves make their food and when that breaks down, other pigments start to show their true colors. Depending on the climate and type of tree determines what colors will be present. The colors range from red, orange, yellow, brown, and even purple!

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Sugar Maple, across from the Chapel.

Although I was sad to let summer go, I welcome autumn with open arms as I enjoy the cooler and more colorful days headed our way. Yosemite National Park, you truly do inspire me everyday.

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Vine Maple, near the Yosemite Lodge.

Written by DNC Parks & Resorts at Yosemite interpretive guide Gena Wood. All photos were taken on October 10th, 2014 by Gena Wood. Come see Yosemite National Park in autumn for yourself!

 

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