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Re: Fall Color

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avatar Fall Color
September 15, 2010 03:23PM
I noticed a few aspen starting to change last week.
Re: Fall Color
September 16, 2010 10:59AM
At approx. what elevation? Winter lasted late this year and spring started and lasted late also. Wonder if the trees will be late turning this year?

Tom
avatar Re: Fall Color
September 16, 2010 11:02AM
Quote
mtn man
At approx. what elevation?

Mostly along the road up to Rock Creek Lake (and Mosquito Flat).
avatar Re: Fall Color
September 16, 2010 11:06AM
This just in (from the Daily Report):

Fall colors: I know there's another week until fall, but seeing frost in Summit Meadow at ten in the morning reminds me summer won't last forever. Already maples in drier locations and the dogbane along Chinquapin are starting to turn. Even Bing is running an article on autumn foliage in Yosemite today.

All spring and summer leaves have been using pigments (chlorophylls, xanthophyll, and carotenoids) to make food from air, water, and sunlight. As temperatures cool and days get shorter, leaves on deciduous trees stop producing chlorophylls and the familiar green color fades away to reveal the other pigments which have been masked all season. Quaking aspen and big-leaf maple display the yellow carotenoids. Continued sunny days and cool nights traps sugars in leaves and some leaves will form the red pigment anthocyanin, coloring trees like dogwoods or the non-native sugar maple near the Chapel, or vines like the poison-oak along the El Portal Road a brilliant orange, pink, or even purple. The best autumn colors occur under conditions like we're expecting now--clear, dry, and cool but not freezing weather. The degree of color may vary from tree to tree and even leaf to leaf. Leaves directly exposed to the sun may turn red, while shaded leaves may be yellow. California buckeyes are "summer deciduous" as a drought adaptation, and the leaves just withered and turned brown. Leaves on marsescent trees, like some California black oaks, will linger all winter and only fall next spring when new leaves emerge. Live oaks, tanoaks, bay laurel and the conifers will keep their newest leaves throughout the winter to get a head start on food production next spring. (B. Mattos, 9/16/2010)
Re: Fall Color
September 16, 2010 01:22PM
I've always thought the most superlative fall colors in the Sierras are not in Yosemite itself, but at Lake Lundy (7 miles north of Lee Vining on 395), and especially June Lake. The colors are late this year. In some years, the aspens have already turned yellow or orange in June Lake., So far, the aspens are still green.
Re: Fall Color
September 16, 2010 02:19PM
And along Lee Vining creek on the road to the power plant. And the west end of Grant Lake to Silver Lake. Normally peak at those elevations are the 2nd and third weeks of Oct. Normally.
Re: Fall Color
September 16, 2010 08:41PM
Quote
mtn man
And along Lee Vining creek on the road to the power plant. And the west end of Grant Lake to Silver Lake. Normally peak at those elevations are the 2nd and third weeks of Oct. Normally.

And at several locations on Hwy 108...especially east of the pass.
Re: Fall Color
September 17, 2010 08:16AM
McGee creek is also another nice location for aspens.
Re: Fall Color
September 19, 2010 03:21PM
Carol Leigh maintains a web page of reports that are emailed to her. Just getting started but its a little early. URL is http://www.calphoto.com/fall.htm.
avatar Re: Fall Color
September 19, 2010 10:25PM
Went out to Bishop via Sonora Pass (and Tioga on return trip) this weekend and the colors are indeed changing. Lots of yellow starting to come out around Bridgeport. Spent Friday fishing at Lake Sabrina and the colors along the road from Aspendell to the lake are starting - even some orange in there right now. Depending on reports, I plan on going out the first and maybe third weekend in October for fall colors photography.
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