Board of Directors
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Rick Marshall
PRESIDENT
Rick Marshall lives in Incline Village, Nevada. Rick has had lifetime interests in environmental and political issues. He graduated from UC Santa Barbara (UCSB) with Environmental Science and History degrees. He is proud that while he was at UCSB, he helped save the Wilcox property in Santa Barbara from development. The 70 acres of ocean front property is now the Douglas Family Preserve. Rick enjoys kayaking, skiing and mountain biking in the Tahoe area and beyond. He was a Director of Analytic Sales at FICO.
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Fabian Hannemann
VICE PRESIDENT and SECRETARY
Fabian Hannemann grew up in the scenic German Black Forest. He holds a B.S. in Business Informatics from Baden-Wuerttemberg Cooperative State University Stuttgart, a B.A. in Business Administration from Open University London, and an MIB from Hult International Business School San Francisco. His career journey began at IBM with consulting and software engineering roles in Germany, South Africa, and the US. Currently, Fabian leads product development at 3Degrees Group, Inc., a global climate solutions provider. Fabian lives in South Lake Tahoe, where he enjoys exploring outdoors with his family, backcountry skiing, swimming, and helping with search-and-rescue. His passion for fighting climate change and mitigating impacts led him to join the Sugar Pine Foundation to improve forest resiliency and restore nature in the Sierra Nevada.
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Ron Landau
TREASURER
Ron Landau grew up in New Jersey, spent most of his adult life in Los Angeles and now calls Tahoe home. He has a B.A. from Rutgers University, a law degree from Duke Law School and a Master of Laws in Taxation from NYU. Ron spent most of his career representing multi-national corporations -many of which cared nothing for the environment. Now retired, Ron has abandoned city life, recognized the joy of living among beautiful mountains, forests and streams and is eager to aid the SPF’s mission. Ron enjoys skiing, wakeboarding, hiking, mountain biking and pickleball. -

Kristianne Hannemann
Kristianne Hannemann grew up in Southern California and now calls Tahoe home. She received her doctorate in pharmacy from University of California, San Francisco (UCSF) and a bachelor of science in pharmacology from University of California, Santa Barbara (UCSB). After graduating, she served many communities as a pharmacist. She and her family have attended different planting and watering events with SPF and enjoy sharing this great work with others. Kristianne joined the SPF Board in 2022 to support the SPF’s mission of improving forest health and reforestation in the face of climate change.
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Rob Oglesby
Rob Oglesby’s life-long passion for California’s natural landscapes stems from growing up at the foot of the Sierra Nevada not far from Lake Tahoe. He attended UC Davis and obtained a bachelor’s degree in Political Science, which he then parlayed into over 40 years of public and private sector service in defense of California’s environment. Serving four Governors as Legislative Director to the California Air Resources Board, Rob enabled landmark legislation to reduce climate change emissions. As California Energy Commission Executive Director, Rob is proud to have helped the state transition to a renewable energy grid and zero emission vehicles.
Rob loves spending time outdoors with family and friends. He has witnessed the decline of Sierra forest health due to disease, wildfires, climate change, bark beetles and other stressors. He joined the SPF Board to help advance its mission.
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Christine Spang
Christine Spang grew up in Upstate New York and now splits time between Oakland, California and a cabin 30 minutes from Lake Tahoe on Highway 50. She holds an S.B. in Computer Science from MIT. Christine has spent her career in software startups, serving as an early employee at Ksplice (acquired by Oracle) and founding Nylas, an enterprise communications infrastructure company she built over 12 years. She is also a Limited Partner in Superorganism, a venture capital fund dedicated to increasing biodiversity. She grew up camping and hiking in the Adirondacks and discovered a passion for trad and alpine rock climbing in college, climbing all over Yosemite, western Canada, and Europe. A lifelong tree lover, she joined the Sugar Pine Foundation board in 2026 to support the SPF's mission of restoring and strengthening Sierra Nevada forests.
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Andrea Cristina
Andrea Cristina grew up primarily in Central America, lucky to have experienced the vines and canopies of the wet tropical jungle. She has always been happiest among the trees enjoying the views. As an adult she relocated to beautiful Lake Tahoe and has dedicated herself to living as environmentally conscious and sustainably aware as she possibly can.
Andrea is currently a student at our local Lake Tahoe Community College for GIS and forestry with a goal to pursue regenerative agroforestry and geospatial technologies. She also enjoys visual arts and using her art as a tool for creating consciousness around the human connection with the natural world. You can find her practicing yoga, snowboarding, hiking with her dog, drawing, planting trees, rock climbing or outside on a beautiful day enjoying the peace of her surroundings. She has joined the Sugar Pine Foundation in efforts to learn and collaborate on the mission to restore the health of our forests.
Advisors
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Michael Taylor
ADVISOR, FORESTER, AND LEADING DISCOVERER OF CHAMPION TREES
Michael Taylor’s passion and expertise is to find and document the largest and tallest trees in the Western United States. An Environmental Resources Engineer by training with degrees from San Diego State and Humboldt State Universities, Michael uses a high tech approach to first remotely scan forested areas for enormous trees. He then hunts down the biggest trees on expeditions throughout California, Oregon and Washington. Michael currently works as the LiDAR Specialist for the Columbia Land Trust, and is based in Montgomery Creek, CA. Michael became a friend of the Sugar Pine Foundation when he was working on cloning one of the tallest known sugar pines with the Archangel Tree Archive. He has shared his tall tree discoveries and hosted SPF staff on expeditions ever since!
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Joan Dudney
SCIENCE ADVISOR
Joan Dudney grew up roaming the mountains and foothills of California’s Sierra Nevada and inspired her lifelong passion for these wild and beautiful places. She earned her PhD in May 2019 from the University of California, Berkeley. Her research focused on white pine blister rust, bark beetles, and drought impacts on white pines in the Sierra Nevada. She has been instrumental in defining trends in the spread of blister rust – it is moving higher into western white pine as opposed to sugar pine – and in studying how best to conserve the Sierra Nevada’s white pines. Joan was awarded the Smith Conservation Postdoctoral Fellowship to lead research efforts on the future drought impacts on whitebark pine and other white pine species. Joan lives in Davis, California and conducts frequent forays into the Sierra for work and pleasure.