Want to see the forest from a different perspective? Then strap in for some high-flying research as Camila Haristoy defends her dissertation in the Forest Club Room this Monday, June 10, at 10 a.m.!
“Above and Below the Canopy of Bigleaf Maple (Acer macrophyllum): Canopy Soils, Litterfall and Decomposition in an Old-Growth Temperate Rainforest”
Epiphytes play critical functional roles in ecosystems by capturing rain, transforming nutrients and providing habitat for canopy-dwelling organisms that are often habitat specialists. Few studies have examined the transfer of epiphytes from the canopy to the forest floor, or how decomposition differs between the canopy and forest floor environment in coastal temperate forest ecosystems.
In her study, Haristoy examined canopy soils, epiphytic litterfall and decomposition of materials associated with bigleaf maple (Acer macrophyllum) in an old-growth temperate forest at the Queets River watershed, Olympic National Park. An enhanced understanding of the movement of epiphytes can provide ecological insights into processes and dynamics of these complex forest ecosystems, and provide conservation strategies for managers.
Haristoy’s committee is co-chaired by Professor Darlene Zabowski and Nalini Nadkarni, and other members include SEFS Professors Bob Edmonds and Jerry Franklin, along with Marcia Ciol.
Images © Camila Haristoy.
Miller and one of his Douglas-fir seedlings.
This Thursday, May 23, at 10 a.m. in Winkenwerder 107, Colton Miller will be defending his Master’s Thesis: “Reforesting Surface Coal-Mined Land Using Douglas-fir Seedlings in Washington State.”
Land productivity can be substantially degraded by surface mining, which introduces such problems as erosion, landslides, floods and loss of habitat. Previous research has focused on methods for improving tree seedling establishment on surface mines in the Appalachian region. Miller’s research investigated modified treatments for improving seedling performance in the Pacific Northwest. He also quantified the response of seedling foliar nutrients to post-planting fertilization.
While you let these thoughts take root, go ahead and mark your calendar and come out and join Miller’s committee chair Darlene Zabowski and other committee members Rob Harrison, Eric Turnblom and Dan Vogt!
Refreshments will be served!
Photo © Colton Miller.
Is there a better way to kick off a Wednesday morning than by listening to one of your fellow graduate students present her original research? No way!
So come out to Anderson 22 at 9 a.m. this Wednesday, May 22, to hear Betsy Vance defend her Master’s Thesis: “Investigating the ecological requirements of Hackelia venusta: An examination of the soils and their potential influence on the limited distribution of one of Washington State’s most endangered species.”
Hackelia venusta (“Showy Stickseed”) is an endemic, endangered species restricted to a single population located on the eastern footslopes of the Cascade Mountains in Washington State. Preservation of the current population, as well as the establishment of future populations, is contingent upon a better understanding of the plant’s specific ecological requirements. The purpose of this study was to characterize the physical and chemical properties of the soil and how these properties may be influencing the current extent of the population.
Professors Darlene Zabowski and Rob Harrison are co-chairs of Vance’s committee, and other members include Professors Sarah Reichard and Eric Turnblom.
She’ll have coffee, juice and some sort of food/snack on hand, so come kick-start your day with some caffeine and a healthy dose of intellectual stimulation!
Photo of Hackelia venusta © Betsy Vance.
Next week on Thursday, May 9, round up your friends and colleagues to come support Erika Knight as she defends her Master’s Thesis! Her talk begins at 1 p.m. in Anderson 22, so join us in commemorating her years of work and research at SEFS.
One of Knight’s treatment plots at the Fall River Long-term Soil Productivity study site in western Washington.
Increasing demand for timber, as well as current interest in the use of woody biomass for energy and chemical production, may result in higher quantities of organic matter removed from plantation forests than currently occurs during harvesting. Knight’s thesis focuses on the potential of two practices that can increase the yield of woody biomass from a harvest site to change soil carbon and nitrogen storage:
1. Application of herbicides to control competing vegetation and improve crop tree growth; and
2. Removal of branches and foliage (slash) in addition to the bole during harvest.
She conducted her research in a 12-year-old Douglas-fir plantation at the Fall River Long-term Soil Productivity site in western Washington. She is part of Professor Rob Harrison’s soils lab, and her other committee members are Professors Darlene Zabowski and Dan Vogt.
Photo © Erika Knight.
We’re already four weeks into the Water Seminar and Environmental Science and Resource Management Seminar series (ESRM 429), but there are still six presentations remaining, starting this Tuesday, February 5! The focus this Winter Quarter is “Water, Soils and Watersheds,” and the presenters represent outside partners as well as several schools within the College of the Environment and broader university community.
The seminars are open to the public and are held Tuesday mornings from 8:30 to 9:20 a.m. in Anderson 223. So mark your calendars for the dates below!
(Contact SEFS Professor Darlene Zabowski or Lynn Khuat with questions about the seminars.)
How Watershed Complexity Promotes Sustainability of Freshwater Resources to People and Wildlife
Daniel Schindler, SAFS/Department of Biology
Serving Multiple Ends: Water and Urban Design
Nancy Rottle, Landscape Architecture
Sustained Productivity Along Subarctic River Systems Explained by Biological Nitrogen Fixation
Tom DeLuca, SEFS Director
What New Learning Tells Us About the Efficacy of Riparian Forest Practice Regulations
Kevin Ceder and Mark Teply, Cramer Fish Sciences
Tsunami Impacts Past and Present: Water Where It isn’t Wanted
Jody Bourgeois, Earth & Space Sciences
Brightwater: A Wastewater Treatment System for the Future
Stan Hummel, King County