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.
As part of a tripleheader coming up tomorrow on Thursday, May 30, Eric Delvin will be defending his dissertation at 2 p.m.: “Restoring Abandoned Agricultural Lands in Puget Lowland Prairies: A New Approach.”
In his official public defense, Delvin will discuss his five years of research, share results of seeding and companion planting experiments of Castillej levisecta, and highlight a research design feature of the project called Staged-Scale Restoration.
Delvin’s committee chair is Professor Jon Bakker, and other members include SEFS Professor Kern Ewing along with Peter Dunwiddie, Sarah Hamman and Janneke Hille Ris Lambers.
You can catch his talk at the Center for Urban Horticulture (Isaacson Classroom), so mark it down for 2 p.m.!
Photo © Eric Delvin.
In case you’re seeing Megan McPhaden’s defense this morning, the best way to keep your neurons firing when she’s done is to join Ailene Ettinger in the Forest Club at 12:30 p.m. as she defends her dissertation, “Testing the Limits: Understanding How Climate and Competition Affect Species Ranges in a Warming World.”
Rising temperatures could result in tree range shifts. Indeed, scientists have already observed that many species ranges have moved upward in latitude and altitude as global temperatures have increased during the past century. However, competition with neighboring trees can also affect species distributions, which means that global warming may not always result in range shifts. Ettinger’s dissertation research investigates these issues by examining how climate (including temperature, rain and snow) interacts with competition to determine the performance of common tree species at Mount Rainier National Park.
Her committee chair is Biology Professor Janneke Hille Ris Lambers, and other members include Martha Groom, Joshua Tewksbury and SEFS Professors Josh Lawler and Tom Hinckley.
Your brain will be hungry, so feed it!
Photo © Ailene Ettinger.
Rachel Mitchell at an experimental grassland at Glacial Heritage Preserve, Wash.
Thesis season is in high gear, and we have another great dissertation defense coming up this Monday, May 13, with Rachel Mitchell: “The Extent, Drivers and Consequences of Intraspecific Variation in Plant Functional Traits.”
Although plant functional traits are increasingly used to explore and understand plant ecology, most studies assume that intraspecific variation in functional traits is negligible. Recent research, however, indicates that this is not the case, and that intraspecific trait variation may play an important role in plant communities and ecosystem function. Mitchell’s defense focuses on the extent, drivers and consequences of intraspecific trait variation in grassland species and communities.
Mitchell’s committee chair is Professor Jon Bakker, and her other committee members include SEFS Professors Sarah Reichard and Soo-Hyung Kim, along with Janneke Hille Ris Lambers, Martha Groom and Regina Rochefort.
Mark your calendars and clear some space to come see Mitchell’s talk this coming Monday morning at 9 a.m. in Anderson 22!
Photo © Rachel Mitchell.