Staff and Council

Nature in the City is a grassroots environmental nonprofit.

Together, we're committed to building community to share our love for nature in San Francisco.




Amber Hasselbring, Executive Director

Amber Hasselbring provides direction for projects, staff, advisory council and strategy. With Nature in the City as an advisory council member since 2006, she has helped to shepherd projects such as the Green Hairstreak Corridor, the Green Connections Plan, and spearheaded the SF Plant Finder. 

Amber is also an artist, naturalist, educator, and garden designer. As founder of Wild SF Gardening, Hasselbring designs and maintains gardens for private Bay Area clients. Amber’s artwork includes Art on BART, the Angel Island Art & Ecology Festival, the Mission Greenbelt Project, Tigers on Market Street, and she has exhibited her work in San Francisco, Chicago, and Kansas City. In 2017, Sierra Club’s The People’s Power List featured Amber and other activists across the US.


Bette McDonnell, Development Director

Bette grew up in Ireland, then headed to Tokyo to pursue adventure and tips on living in small spaces. As writer/editor in the financial securities industry, she worked with international firms including Citicorp. Upon moving to the U.S., her desire to bring value to community life led her to human services and the environment when she began her career in non-profits. She’s raised funds and written for the St. Vincent de Paul Society, Women’s Recovery Association, RSF Social Finance, and Kids in Parks. Bette believes nature in our cities is crucial to the well-being of all species (human and animal) and brings that energy to grant writing and relationship building in all her work with Nature in the City. Aside from grant proposals, she writes poetry and short stories.


Zahra Kelley, Manager of Advocacy & Projects

As Manager of Advocacy and Projects, Zahra leads community engagement and public outreach, as well as planning and execution of NTC’s projects. With a good understanding of the local bioregion and its connectivity, she engages in deeper conversation about open space and the preservation and accessibility of wild lands and watersheds in San Francisco. Zahra has a diverse and broad background in environmental management, economics, policy, and public advocacy. She lives in San Francisco and loves to share the magic of nature in the city with all walks of life.

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Ariel Wang, Media & Partnerships Manager

Ariel Wang integrates her love for design, community, and environmental science to her role at Nature the City. She writes and designs original content to advocate for environmental literacy across various platforms. Recently, Ariel directed the creative production of Nature in the City’s website to promote the new map, as well as other urban ecology projects. After graduating from UC Berkeley, Ariel organized ecological restoration and community-building park design programs at the Presidio Trust. Previously, she developed curriculum and taught field science at NatureBridge in Yosemite National Park and Olympic National Park. Ariel is an activist for racial equity in environmentalism. She has presented at PGM ONE and is an active member of Environmental Educators of Color in San Francisco. Ariel has collaborated with Nature in the City since 2015.




Sarah Gomes, Habitat Restoration Intern

Sarah will be graduating from San Francisco State University in the fall, with a B.S. in Environmental Science. She grew up in the East Bay and works at her family's third generation plant nursery, Gomes Nursery, and as a dance teacher at DC Dance Center. She has previously worked along the coast of Half Moon Bay as a community crew leader with the SCA. She is now working with Nature in the City as their first habitat restoration intern and is excited to begin research on the Green Hairstreak butterfly with Dr. Baguskas, a professor at SFSU.




Laura Castellini, Advisory Council Chair

Sustainability Coordinator at the National Park Service, Golden Gate National Recreation Area. Laura has been involved with Nature in the City since its beginning in 2005. She has a background in aquatic and wetland ecology and is slowly learning her dune plants by participating in the Backyard Natives Nursery Network.



Bill Brick, Strategy & Corporate Sponsorship

Bill is a solar energy executive who develops community-scale projects within the built environment. He has worked in Silicon Valley, Latin America and Africa in business development, transactional finance and start-up leadership roles for over twenty-five years. Bill brings a childlike fascination with nature that stems from collecting creepy crawlies as a toddler and reading Thornton Burgess and Ranger Rick as a young learner. Bill has an MBA from UC Irvine and a California Naturalist certificate. In his free time he conducts coastal habitat surveys with Beach Watch, a citizen science program of NOAA.


Marcus Griswold, Science Advisory & Fundraising

Prior associate at Skeo and Entomologist. Marcus is a prior Associate at Skeo, a national consulting firm focused on embedding equity and social justice into decisions made in and adjacent to environmental justice communities. He received a Ph.D. in Environmental Engineering Sciences, where he has since utilized his background in, and love of nature, to manage climate change and environmental education programs and to develop advocacy messages for non-profits. Before moving to the west coast, he was a founding board member of Blue Water Baltimore and the Maryland Climate Communications Consortium, where he led efforts to communicate complex scientific issues to lay audiences.


Fritha Knudsen, Corporate Sponsorship & Events

Executive Producer and Creative Director. Fritha is a creative force in corporate events production, and her clients include: Virgin Galactic Spaceport America,, Cisco, and the Olympic Games of 1996 and 2010. She lives in San Francisco and loves preserving its natural magic.


Paisley Schade, Membership, Marketing & Events

Paisley Schade is a freelance Creative Director/Writer. She built her career at large branding and advertising agencies, including Landor and Ogilvy. A sixth-generation Bay Area native, she has a lot of heart for all flora and fauna that have also been here for generations. She sees nature as a vital part of San Francisco and hopes to help preserve, expand and appreciate what we have all around us.


Kirstin Weeks, Corporate Sponsorship &  Sustainability

Senior Building Ecology Specialist at Arup. Kirstin works with architectural teams to produce projects that are sustainable and net positive for energy, water, health, and ecosystems. Kirstin joined Nature in the City’s Board in 2015, and acts as design community liaison, helping to raise awareness of the opportunities for biophilic design and integration of ecological function in the built environment.



Join our Council! We are currently seeking new Advisory Council members. We value diversity and seek to create a strong board reflective of San Francisco's multicultural and economically diverse communities. If you are interested, please email us at info[at]