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Showing posts from October, 2016

Senescense: Why leaves change color

Here at Sierra Outdoor School we have few large trees that provide the bulk of our autumn color: black oak, big leaf maple, and Pacific dogwood. All of these trees are deciduous - meaning that each year they shed all of their leaves, remain leafless for a period of time, and then grow all new leaves. The process where the leaves prepare to fall from the tree, or the cells gradually deteriorate as they age, can be referred to as senescense. During this process of senescense, the pigment levels in the leaves change producing the much awaited fall colors.

The change in day length and temperature signals deciduous trees to begin the process of senescense by first sending any nutrients available in the leaf to other parts of the tree. The next step is to breakdown chlorophyll, the pigment that gives leaves their green color and allows for photosynthesis to occur. As the dominant green pigment slowly disappears, other colors are revealed: yellow, orange, red, and purple. After the chlorophy…

Where are they now...2015-2016 SOS Naturalist Interns?

Every year SOS says hello and goodbye to some great Naturalist Interns. This post is dedicated to the amazing people from the 2015-2016 school year. Let's see where they are now!


Andrew Martin (Summit)
Andrew is enjoying teaching children in the outdoors at Sierra Outdoor School as a Naturalist. He loves living and working in the mountains and SOS is the perfect place for him. He is excited about his new roommate, Juno, his puppy, and about learning and working with the SOS raptors.  


Beth Thompson (Owl)
Beth is working at Glen Helen Outdoor Education Center in Yellow Springs, Ohio, as the Program Coordinator Administrative Intern. She is communicating with the schools prior to their arrival to gather information for their visit to the OEC. She also develops the schedule rotations for the naturalists. As one of three administrative interns, she mentors a third of the naturalists and provides input and advice on their lesson plans and teaching techniques. While her position does not re…