Peter Adler

HIAMP Government Liaison and Special Projects Coordinator

Peter S. Adler, Ph.D. is the Government Liaison and Special Projects Coordinator of the Hawaii Agricultural Mediation Program. Formerly he was President of The Keystone Center, which applies consensus-building and scientific information to energy, environmental, and health related policy problems. Peter’s specialty is multi-party negotiation and problem solving. He has worked extensively on water management, resource planning, agricultural issues, land planning issues, and marine and coastal affairs. Peter has held executive positions with the Hawaii Justice Foundation, the Hawaii Supreme Court’s Center for Alternate Dispute Resolution (ADR), and the Neighborhood Justice Center. He has served as President of the Society of Professionals in Dispute Resolution and has written extensively in the field of mediation, conflict resolution, and leadership.

Mary Campbell

CALAMP Program Manager and Mediator

Mary Madison Campbell is an attorney and mediator in the high desert region of Southern California. With over a decade of experience in conflict resolution, Mary’s focus is supporting families in transition, estate planning and agricultural/environmental dispute resolution. In addition to her mediation and law practice, Mary teaches mediation, facilitation and community engagement classes for the University of California Extension’s Conflict Resolution Certificate Program. Mary has also worked with organizations and community groups on larger-scale issues such as addressing regional environmental impacts, climate change and commercial fishing, and with community-based mediation centers in Maryland and California. Mary earned her Bachelor of Arts from DePauw University and her Juris Doctor from the Martin Luther King School of Law at the University of California at Davis, where she also completed a certificate in Public Interest Law.

Cara Cargill

NHAMP Program Manager and Mediator

Cara is the Outreach Coordinator for New Hampshire. She has a BA from Mount Holyoke College in Political Science & Environmental Studies and a MS from the Woodbury Institute at Champlain College in Mediation and Applied Conflict Studies.  After 16 years of managing large horse farms and teaching horse-back riding she has shifted her focus to facilitating group dialogues around environmental and civic issues and mediating parties that need to work out a problem.  She has a particular affinity for working with individuals and groups around environmental and agricultural issues.  Understanding the importance of communication through multiple media, Cara looks forward to increasing NH’s diverse agricultural communities awareness of NHAMP.

Jacob Haigh

Research Intern

Jacob Haigh is an intern at the Environmental Mediation Center. He has a BA in Political Science from Hunter College, with a specialization in economics, finance, and energy issues. During his undergraduate program, he researched political and economic pressures resulting from natural gas denial in the context of the Russian invasion of Ukraine. He also participated in the Student Conference on U.S. Affairs held annually at West Point. As a young professional, he is excited to bring an interest in energy and environmental issues to the forefront with the EMC.

Julie Hoyt


Julie Hoyt was the Associate Director of the Environmental Mediation Center. Julie has worked with EMC since 2007 and previously assisted in the administration of both the Vermont and New Hampshire Agricultural Mediation Programs. Julie is an attorney admitted to practice in both Vermont and Massachusetts. Julie’s mediation experience includes a variety of producer-creditor disputes, adverse decision letters arising from FSA loans, NRCS programs, Rural Development loans and many others. Julie has experience working in the agricultural community working on issues affecting dairy and goat farms and fruit and vegetable growers.

Jenna Muller

CALAMP Program Manager and Mediator

Jenna Muller is a mediator, lawyer, and farm owner. She completed her legal training at the University of Michigan Law School. Her legal practice focused on corporate restructuring and business disputes. Jenna received mediation training from the Yolo Conflict Resolution Center and UC Berkeley. She has a Bachelor of Arts in International Development Studies from UCLA and worked on development issues in Brazil. In 2013, she became an owner of Full Belly Farm, a 450-acre organic, mixed-fruit and vegetable operation in Northern California. As a farm owner, she regularly interacts with state and local agencies and deals with organic certification requirements, buy/sell agreements, leases, and environmental and labor issues. She is familiar with the myriad challenges and opportunities facing family farms and agricultural businesses in California. Jenna lives with her husband and three children in the Capay Valley, near Sacramento, California.

Teya Penniman

HIAMP Program Manager and Mediator

Teya is the Program Coordinator for Hawaii. She is a mediator, facilitator, arbitrator, and attorney, with an MBA focused on the economics of natural resources. In Hawaii, she has facilitated positive discussions on complex public-policy issues, including long-term water use planning, and endangered species/wind energy mitigation. Teya managed a county-wide invasive species program for 14 years, where she engaged directly with the agricultural community. She also writes and reports on local, regional, and international climate, biodiversity, agricultural, and fishery issues.

Matt Strassberg


Matt is the director of the Environmental Mediation Center and the administrator of the EMC’s agricultural mediation programs. He is an attorney and mediator with over thirty years of experience in environmental law and mediation. He was the founding director of Green Mountain Environmental Resolutions, a dispute resolution firm focused on developing collaborative solutions to environmental and land use disputes. He serves on the Steering Committee of the Coalition of Agricultural Mediation Programs and is listed on the roster of the US Institute for Environmental Conflict Resolution.

Eliza Walker

Program Manager and Mediator

Liza is a Program Manager and Mediator serving Vermont’s agricultural community and forestland owners. Liza brings 25 years of experience in land conservation to the resolution of environmental and land-based conflicts. 

Liza supports farmers and landowners in addressing the diverse economic, environmental, and interpersonal challenges that impact the operation and succession of farms, sugarbushes and family forests.

Liza earned her B.S. in Environmental Studies from Oberlin College and a Certificate in Professional Conflict Management from Champlain College and Northstar Group. She has dispute resolution training in areas of divorce, elder law and land use, with instruction from Vermont Law School and the Program on Negotiation at Harvard Law School. Liza is a Farm Succession Coordinator certified by the International Farm Transfer Network and a Community Heart and Soul® coach. Liza serves on a Restorative Justice Panel for the Montpelier Community Justice Center and lives with her family in Bristol, VT.