Catherine Martineau, Executive Director, has been a leader in the nonprofit urban forestry field for over a decade. She serves on the board of California Releaf, a statewide urban forestry organization. She brings to her role extensive professional experience in both the financial and management consulting sectors. Leading Canopy, she draws on her professional experience as well as her personal interest in community service, education and the environment.

A native of France, Catherine started her career in Paris with the BNP Group and moved to the United States in 1986, joining BNP Venture Capital. In 1991, she and her husband created Martineau & Associates, a management consulting practice specializing in new initiatives. Catherine holds a post-graduate degree (ABD) in economic theory, a master’s degree in mathematical economics, and a bachelor’s degree in international economics from the University of Paris. Catherine became Executive Director in 2004. Send Catherine an email.


Michael Hawkins, Program Director, has loved planting trees since he participated in his first neighborhood tree planting in Oakland at age ten. He joins Canopy most recently from Davey Resource Group where he was a Consulting Utility Forester for PG&E. Prior to that, Michael was a project coordinator at Our City Forest in San José and worked on the Million Trees NYC initiative with the New York Restoration Project.

Michael holds a BA in Literature from the University of California, Santa Cruz, and studied Horticulture at Cabrillo College. He is also an ISA-Certified Arborist. Michael joined Canopy in 2010. Send Michael an email.

maika profile

Maika Horjus, Director of Donor Engagement, joined Canopy in fall of 2013. A native of the verdant Pacific Northwest, she brings a love of connecting people with nature and with one another. Prior to Canopy, Maika worked with a community food security non-profit in her hometown of Vancouver, Washington, cultivating volunteer efforts and coordinating a small-scale marketing co-op for urban farmers.

Maika holds a BS in Conservation and Resource Studies from the University of California, Berkeley, where she studied community development and conservation biology. Send Maika an email.


Natalie Brubaker, Education Manager, oversees the youth and adult education programs at Canopy. She enjoys creating opportunities for people to explore their local ecosystem and learn from others in the community.  Natalie’s love of trees developed in the Piedmont region of the southern states where she grew up in Atlanta, known as “The City in the Forest.”  

After completing her B.S. degree in Environmental Studies at Emory University, Natalie served as Director of Afterschool Programs at The Advent School in Boston.  Her interest in place-based education led her to pursue her master’s degree in Ecological Teaching and Learning at Lesley University.  Prior to joining Canopy in the fall of 2016, Natalie was the Farm & Landscape Educator at Gore Place, an historic site in Waltham, MA.

Uriel Hernandez

Uriel Hernandez, Community Forestry Program Manager, started volunteering for Canopy in his home town of East Palo Alto, in May 2014 and joined Canopy as a staff member in May 2015. He holds a bachelor’s degree from Middlebury College where he studied Architecture and History. Studying in rural Vermont he developed a love for the manmade and natural worlds around him and discovered a desire to bridge discord between the two.

Prior to Canopy, Uriel worked at several Bay Area start-up companies where he developed an ability to juggle many roles. He enjoys exploring the diverse ecosystems found throughout the Bay area. Send Uriel an email.

Shannon McDonald

Shannon McDonald, Outreach and Operations Manager, joined Canopy in fall 2015 after returning from seven months of living abroad in the Costa Rican jungle. Prior to Canopy, Shannon worked with various nonprofits in roles such as public policy research, community outreach, and advocacy. 

Shannon holds a Master of Urban & Regional Planning from San Jose State University, where she studied community development. She enjoys spending her free time exploring new places, hiking, and practicing yoga. Send Shannon an email.

Elise Willis

Elise Willis, Community Forestry Program Manager, joined Canopy in fall 2015. She started as a part-time staff member conducting two studies for the City of Palo Alto’s Urban Forest Master Plan, and is excited to begin implementing some of the recommendations to grow the canopy in south Palo Alto. Prior to Canopy, Elise worked for the City of Palo Alto as a contract employee checking building permits for the Urban Forestry division.

Elise holds a BS in Forest Resources and Conservation from the University of Florida, and is an ISA-Certified Arborist. She enjoys hiking and is excited to continue exploring California’s wonderful natural areas. Send Elise an email.


“Canopy’s staff and volunteers are dedicated, serious and sophisticated about preserving
and expanding
Palo Alto’s canopy.”

~ Alan Weller,
Palo Alto Resident

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