In response to shorter days and sunshine's declining density, leaves begin the age old process leading to their demise.
Like so many others, I make time to honor the tapestry they weave before they fall.
Chlorophyll, the green pigment we associate with summer, and necessary for photosynthesis, slows and then stops manufacturing food, and the leaves go on strike.
Veins that carried fluids via the xylem and phloem close off, trapping sugars, and promoting the production of anthocyanin, the red color we associate with Red Maples and Silver.
Though in the same family, Sugar Maple displays the yellows and oranges of the ever present Carotenoids, which had previously been masked by Chlorophyll.
Stripped Maple knows only one hue, making it easy to spot its large display of brownish yellow.
One of my favorites is the reddish-pinky-purples of Maple-leaf Viburnum, a shrub with maple-shaped leaves.
Ash follows suit, though its leaves are the quickest to drop and disappear into the forest floor.
Big-tooth Aspens turn a golden yellow, but other colors have a tendency to seep in and create a striking picture.
American Beech, Paper and Gray Birch show off a yellow to golden bronze presentation.
And a little late to the show, Northern Red Oaks put their colors on display after other species have already dropped their leaves.
Not really a part of the foliage, but still important because it is present, is the splotchy display caused by Anthracnose fungi, a result of too much rain stressing trees and not allowing them to properly respire.
Once connecting tissues between leaf petioles and their twigs form a seal, the forest floor is colored with gems that will eventually turn various shades of brown as they decompose and restock the soil with nutrients, plus provide food for numerous organisms. And shelter.
In a Senior College (Lifelong Learning) class this past week, I attempted to use watercolor pens to capture the colors.
And then at home, I tried to do the same, only this time using watercolor pencils to show off the vibrant variety of hues.
In doing so, I was forced to slow down and notice how the color changes often followed the veins in this biochemical process.
Fall foliage is fleeting, and I give thanks that every year we can celebrate the work of the leaves.
So fun and informative! I am passing this on to several interested friends!
Kendra
LikeLiked by 1 person
Thanks for sharing it with others, Kendra!
Safe travels to you!
LikeLike
Beautiful fall colors!
LikeLiked by 1 person
Thanks M.B. It gets more beautiful every day.
LikeLiked by 1 person