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MALT Conservation Staff

Our Conservation and Stewardship staff are knowledgeable and committed to helping Marin’s farmers and ranchers thrive. We’re here to help landowners learn about their land and its agricultural and natural resources, and provide technical assistance to help maintain and enhance them. 

Jeff Stump, Director of Conservation
415-663-1158, ext. 303

Jeff directs all aspects of land protection, stewardship, and state and federal government relations for MALT. He joined MALT in 2006 as the Easement Program Director and has worked in land conservation and policy at the local, state and national level for more than 20 years. Prior to joining MALT, Jeff served as the vice president and director of coastal programs for the American Land Conservancy and legislative coordinator for the California Coastal Commission. He holds a Bachelor of Science in environmental policy analysis and planning from the University of California at Davis.

 Jeff Stump

Jim Jensen, Stewardship Manager
415-663-1158, ext. 313

Jim joined MALT in 2013 bringing his understanding and expertise as a local rancher to MALT’s Stewardship staff. Jim works closely with the Director of Conservation, supervising Stewardship staff, managing MALT’s Stewardship Assistance Program and representing MALT at the local and regional level on land stewardship and conservation planning efforts. Jim has also played an integral role with the Marin Carbon Project’s (MCP) Implementation Task Force working to develop and fund Carbon Farm Plans throughout West Marin. He holds a bachelor’s degree in forestry and natural resources and a minor in rangeland resources management from Cal Poly, San Luis Obispo. When Jim is not at the office or in the field, he can be found working on his family’s 6th-generation sheep and cattle ranch near Tomales.

Jim Jensen

Stephanie Tavares-Buhler, Esq., Easement Project Manager
415-663-1158, ext. 302

Stephanie joined MALT in 2013 and supports the acquisition of agricultural conservation easements. Prior to coming to MALT, she interned at the Upper Valley Land Trust, and worked as an energy, environment, and business journalist in Las Vegas. Stephanie grew up in a farming family in Central California. She holds a J.D. and a master’s in environmental law and policy, cum laude and magna cum laude, from Vermont Law School.


Kristin Guy, Stewardship Project Manager
415-663-1158, ext. 322

Kristin joined MALT in the spring of 2018, bringing over a decade of Conservation Planning experience from our close partner, the USDA Natural Resources Conservation Service (NRCS) throughout California’s Central Valley. Kristin assists MALT landowners with conservation programs and projects, monitors existing easements, and evaluates prospective new projects. She provides our landowners with technical assistance in addressing resource concerns and works closely with our partner organizations to develop practical solutions. Kristin holds a Bachelor’s of Science degree in Biological Sciences from California State University, Stanislaus.

Kristin Guy, Stewardship Project Manager

Zach Mendes, Stewardship Project Manager
415-663-1158, ext. 304

Zach joined MALT in 2014 to assist landowners with conservation programs and projects, monitor existing easements and evaluate prospective easements. Prior to joining MALT, Zach was the land projects and stewardship coordinator for the Northern California Regional Land Trust. He comes from a dairy farming family in the northern Sacramento Valley and holds a bachelor’s in urban studies and planning from the University of California, San Diego. 

 Zach Mendes

Eric Rubenstahl, Stewardship Project Manager
415-663-1158, ext. 319

Eric joined MALT in April of 2016. He assists in monitoring existing conservation easements, helps evaluate future agriculture conservation easements, and facilitates best management practices on MALT’s working landscapes. Prior to joining the MALT team, Eric worked with the City of Fort Collins (Colo.) Natural Areas Department and for the South Yuba River Citizens League in Nevada City, Calif. Eric holds a master’s degree in Conservation Leadership from Colorado State University, where his thesis research consisted of creating a management plan for a 22,000-acre private protected area in southern Belize.

Eric Rubenstahl

Jonathan Wachter, Conservation Project Planner
415-663-1158, ext. 317

Jonathan joined MALT in 2018 to assist in developing agricultural management plans, implementing carbon farm plans and facilitating best management practices. His background ranges from building school garden curriculums in Oakland to doing agricultural policy research in Australia and New Zealand. Jonathan holds a PhD in soil science from Washington State University, where he worked on developing strategies for improving soil health and economic performance of pasture and crop land.

Jonathan Wachter


Our Conservation and Stewardship teams are an excellent resource for MALT farmers and ranchers. We want to help your operation succeed and we are happy to answer any questions you may have. Please don’t hesitate to call, write, send us an email, or stop by and see us at our office in Point Reyes Station. We are here for you.