SEFS Grad Students Contribute “Tree Truths” to Art Exhibition

This summer, local artist Cheryl A. Richey is showcasing a selection of her abstract “tree spirit” paintings and charcoal drawings in the UW Tower’s Mezzanine Gallery. Her show, Arbor Intelligence, explores the subtle power and mystery of trees, and the exhibition includes 30 printed “tree truths” that capture a range of scientific facts and interpretations about trees and forests.

One of Cheryl's "tree spirit" paintings, Pyrophyte 2 (acrylic, collage, burned canvas)

One of Cheryl’s “tree spirit” paintings, Pyrophyte 2 (acrylic, collage, burned canvas)

Cheryl drew from several sources to create the “tree truths,” including Tree:  A Life Story, by David Suzuki and Wayne Grady. For 12 of them, though, she partnered with SEFS graduate students—including Sean Callahan, Sean Jeronimo, Caitlin Littlefield , Korena Mafune, Allison Rossman and Jorge Tomasevic—to produce “truths” from their own research and experiences!

Arbor Intelligence opens today, Tuesday, July 5, and will run through the end of September. The UW Tower is open every day from 8 a.m. to 5 p.m., and it is accessible to anyone with a Husky card.

We encourage you to stop by and visit the exhibition this summer, and also to take a look through the “tree truths” that will appear with the show (with our graduate students listed in bold below next to the truths they provided!

Tree Truths

1. Trees are the “lungs” of the earth.
2. Trees often have lifelong – ‘best friend’ – relationships with mycorrhizal fungi. Without these fungi, woody plants may never have evolved on land.
3. Forests absorb more than 25 percent of the carbon dioxide produced by human activities.
4. Forests constantly replenish Earth’s supply of fresh water.
5. Forests influence weather patterns.
6. Trees are communal and share sun and water resources via their root systems.
7. Riparian forests are critically important to river ecology, which benefits fish and wildlife. 8. Chlorophyll and hemoglobin are similar in structure with only one atom difference between them: chlorophyll’s one magnesium atom enables plants to capture light, whereas hemoglobin’s one iron atom allows blood to capture oxygen.
9. Trees’ “dynamic spiral” growth pattern is similar to other patterns found in nature, like spiral galaxies and DNA coils.
10. Lodgepole pine cones can wait 50 years for fire to open the cones and release the seeds.
11. Mature Douglas-fir trees can tolerate fire because of their nonflammable, thick bark (up to 12 inches thick).
12. It can take 36 hours for water to move from roots to canopy in a mature Douglas-fir tree.
13. Needles contain little sap, which makes them more resistant to freezing.
14. When invaded by disease, a tree seals off the infected area to control its spread.
15. Because of its smaller surface area, a needle transpires less water than a broadleaf, so conifers do better than deciduous trees in sunny environments with long dry periods.
16. Some evergreens, like the monkey puzzle tree, keep their needles for up to 15 years. 17. Rainforests lift and transpire huge amounts of water every day, creating great rivers of mist that flow across the continent. This water condenses and falls as rain.
18. Bristlecone pine trees regularly keep their needles for 20 to 30 years, and occasionally as long as 45 years. (Sean Jeronimo)
19. Bristlecone pine is the oldest known non-clonal organism in the world. One specimen is older than 4,800 years, and another is older than 5,000! (Sean Jeronimo)
20. The only living tissues of a tree are its foliage, buds and inner bark—which usually make up less than 1 percent of a tree’s biomass. (Sean Jeronimo)
21. The lodgepole pine spans an elevation range from sea level to higher than 10,000 feet, and ranges from swampy wetlands to the near-desert pumice plateau. (Sean Jeronimo) 22. Most trees are monoecious, meaning each individual bears both male and female reproductive organs. However, some tree species, such as Pacific yew, have separate male and female individuals. (Sean Jeronimo)
23. High above the forest floor, organic soils form on branches of Washington’s old-growth rainforests. These ‘canopy soils’ promote habitat for a wide array of unique organisms. It’s a whole new world that has barely been explored. (Korena Mafune)
24. The endangered marbled murrelet spends most of its life at sea, but the bird exclusively nests on mosses growing high in the canopy of coniferous trees near the coastline. (Sean Callahan)
25. About 80 percent of vegetative diversity in a forest lies in the “understory,” including saxifrages, grasses, biscuit roots and roses. These beautiful and unique plants complement the “overstory” structure and composition. (Allison Rossman)
26. Stick your nose into a black crevice between the red-orange bark plates of a big ponderosa pine. Smells like vanilla! (Caitlin Littlefield)
27. In autumn, deciduous trees respond to shorter days and cooler temperatures with colorful foliage caused by the breakdown of green chlorophyll in leaves. But with warmer temperatures and drought conditions lasting longer, some trees are dropping their leaves before they change color. (Caitlin Littlefield)
28. In a forest under attack by a pest or pathogen, you may actually count more trees—lots of young ones—than before the outbreak, because some species make a last-ditch effort to reproduce before death. (Caitlin Littlefield)
29. Dead trees are important for biodiversity. They are a source of food and shelter for insects, fungi, spiders, and many bird species, as well as small mammals, snakes, lizards, and bats. Dead trees are rich with life, and we should celebrate them, too! (Jorge Tomasevic)
30. Pyrophytes are plants, including trees (some species of pine, oak, eucalypts and giant sequoias) that have adapted to tolerate fire. In some species, fire aides them in competing with less fire-resistant plants for space and nutrients.

Painting © Cheryl A. Richey

SEFS BioBlitz Team Featured Nationally!

This past weekend, a team from SEFS participated in the Olympic National Park BioBlitz, which was one of dozens of BioBlitzes held across the county as part of the National Park Service’s centennial celebration this year (another event down at Mount Rainier included Professor Laura Prugh and her ESRM 351 class!). The Olympic National Park team included Research Scientist James Freund and Affiliate Professor Robert Van Pelt, along with graduate students Russell Kramer, Sean Callahan and Korena Mafune.

In preparation for the BioBlitz, they put together a video of some of their tree-climbing work high up in a 401-year-old Douglas-fir in the Hoh River Valley. The video captures them roped in and measuring the tree’s characteristics, including documenting the moss, lichen and other plant and animal communities in the canopy. It’s a great five-minute video, and also a terrific window into some the research going on in our school.

Even cooler, too, is that the National Park Service chose this video as one of only three across the country to show on the National Mall in Washington, D.C., this past weekend!

Nice work!

Video © National Park Service.

Olympic National Park BioBlitz