Our People

Cheryl Johncox, Board Chairperson

Union County, OH

Cheryl has spent most of her life living in Ohio. She received her Bachelor’s degree in Natural Resources management and policy from The Ohio State University. She has spent more than 20 years working to protect Ohioans and our land, air, and water from polluters. In her current role as part of the Sierra Club’s National Beyond Dirty Fuels team, Cheryl works to move Ohio and Pennsylvania beyond fossil fuels. Originally from the Cuyahoga County area, Cheryl, and her family live in rural Union County. Cheryl was a candidate for Ohio’s 86th House District in 2012. In 2005 Cheryl was the recipient of the National Conservation Achievement Award, from the National Wildlife Federation for her work on International Sustainable Development.

Zack Bollheimer, Vice Chair

Columbus, OH

Zach is an ecologist and land manager. His passion for ecosystem health and invasive species management have taken him from the Pacific coast to the Appalachian mountains, conducting ecosystem restoration, working to increase water quality, and educating on ecological issues. Raised in western Ohio where publicly accessible forests are scarce, he has more recently worked with Keep Wayne Wild to push against hydraulic fracturing and waste injection wells in Ohio’s only National Forest. He currently volunteers with Sierra Club and Central Ohio Housing Action Network. He received his Bachelor’s degree in Environmental Geography from Ohio University. Zach is the land manager of Glen Helen Nature Preserve in Yellow Springs, Ohio.

Kim Landsbergen, Board Secretary

Green County, OH

Kim is an ecologist who uses physiological and biogeochemical methods to study carbon and water dynamics in terrestrial systems, usually in the context of climate change, invasive plants, urban ecosystems, and land management. Prof. Landsbergen is a certified senior ecologist with the Ecological Society of America and owner of CarbonEcology Consulting. She also holds an appointment as Visiting Research Scholar with Ohio State University’s Department of Evolution, Ecology, and Organismal Biology. Kim joins the faculty most recently from the Columbus College of Art and Design, where she was an ‘embedded professor of science. At Antioch College, Prof. Landsbergen is currently collaborating on applied ecology projects with students and staff at the Antioch Farm, at the Glen Helen Nature Preserve, and in the Village of Yellow Springs.

Jen Mendoza

Cincinnati, OH

Jen Mendoza is a Cincinnati based organizer with a background in both labor and environmental justice direct action campaigning. Jen was the lead organizer in the campaign that passed legislation to protect workers from wage theft. In her hometown of Cincinnati, Ohio, she currently works to push the corporate giant Procter & Gamble towards more sustainable sourcing for their tissue products. She is Stand.earth forest campaigner doing deep local organizing in P&G’s backyard. Jen is an activist with a focus on human rights issues and has immersed herself in anti-racist work. She is an active member of Greater Cincinnati Native American Coalition since its inception and the newly formed Anti-Racist Anti-Police Brutality Coalition. She is also a member of The Ohio Valley IWW (Industrial Workers of the World), and sits on the organizing committee. When she is not challenging the system, you can find her in the woods, in the mountains or on a beach. She enjoys reading and book clubs, live music and making art.

Becca Pollard

Columbus, OH

Becca is an independent multimedia journalist/digital communications specialist. Other skills include outreach, recruiting, training and event planning and management. Becca is passionate about social justice issues, and community organizing has a life-long love of wildlife and outdoor recreation and cares deeply about conservation. She has worked with a variety of grassroots non-profit organizations and is a founding member of Keep Wayne Wild. She is also a member of Heartwood, Ohio Environmental Council, Sierra Club, and Mid-Ohio Valley Climate Action. Becca is currently employed by the Sierra Club.