The Board of Directors of 1000 Friends of Florida is made up of men and women from around the state who are dedicated, respected advocates of effective growth management. The organization’s goal is to include on its board a broad representation of Floridians, emphasizing geographic diversity as well as a mix of backgrounds, experience and expertise.

Updated January 2025

Officers

Susan Trevarthen, Chairman (Term through December 2027. Independent, voting member)

of Fort Lauderdale, is an attorney with Weiss Serota Helfman Cole & Bierman, PL, handling land use, planning and zoning matters for governments and serving as a municipal attorney. Her work includes negotiating development agreements and approvals, drafting municipal codes and plans, advising municipal staffs, managers and attorneys, defending challenges to municipal regulations and decisions, handling public hearings and counseling elected officials, as well as advocating for municipalities on legislative issues in her field. She chairs the firm’s Public Land Use and Zoning Group, which handles all of the land use matters for the municipalities where the firm serves as the municipal attorney and serves as special land use and zoning counsel for clients throughout Florida. She has been recognized as one of the top land use attorneys in the state in publications such as Florida Trend Magazine and SuperLawyers, and she has an AV rating (highest attainable) from Martindale Hubbell. A member of the College of Fellows of the American Institute of Certified Planners and Board Certified in City, County and Local Government Law by The Florida Bar, Susan speaks and publishes frequently on planning, zoning and land use issues. She has held leadership positions in The Florida Bar’s Section for Environmental and Land Use Law and Section for City, County and Local Government Law, serves on the Legislative Policy Committee of APA Florida, and serves on the Board of Citizens for a Scenic Florida. Susan grew up in Boca Raton, Florida, and she received master’s in planning and juris doctor degrees from the University of North Carolina at Chapel Hill.

F. Gregory Barnhart, Vice Chairman (Term through December 2026. Independent, voting member)

of West Palm Beach, received his A.B. from Vassar College and J.D. from Cornell University, and has been a partner in Searcy Denney Scarola Barnhart & Shipley, P.A., in West Palm Beach since 1981. He has held numerous offices with the Academy of Florida Trial Lawyers, including serving as its president from 1993-1994. He has served on the boards of the Florida Lawyers Action Group, Academy of Florida Trial Lawyers Research and Education Foundation, as president of the Federal Bar Association, Palm Beach County Bar Association, The Legal Aid Society of Palm Beach County and other professional organizations. Mr. Barnhart is a regularly published author and lecturer in the field of trial law and advocacy, and is listed in the national publication The Best Lawyers in America.

Timothee Sallin, Secretary (Term through December 2026. Independent, voting member)

of Clermont, has been actively involved in water conservation, sustainable landscaping and responsible agriculture in Florida over the past 15 years through his role as President of Cherrylake. Cherrylake is a vertically integrated landscape company providing commercial landscape and irrigation construction and maintenance services and is the largest grower of ornamental trees, palms and shrubs in the State of Florida. Cherrylake and its sister company IMG Citrus manage over 6,000 acres of land in Florida and have a long track record of sustainable land management and stewardship. Timothee is passionate about connecting people to plants and promoting healthy ecosystems within our urban environments. He has been actively involved in promoting environmental best practices across diverse industries through collaboration with industry associations such as ULI, ASLA and FNGLA as well as through research and development partnerships with UF IFAS and the SJRWMD. Timothee is a graduate of New College in Sarasota Florida earning a degree in Economics and International Studies. Timothee lives in Clermont with his wife Ellen and daughter Aria, his son Tristan is an undergraduate student at Georgia Institute of Technology.

Timothy Jackson, Treasurer (Term through December 2026. Independent, voting member)

of Longwood, currently serves as Treasurer. Over his past 23 years on the Board, he has led the organization’s development of the Florida 2060 Plan, which laid the foundation for later 2070 studies, and has served on numerous advisory committees including the ULI Committee on Regional Cooperation in 2005, and the Leadership Committees for the Florida Transportation Plan 2025 Update and 2050 Plan. Tim has been involved professionally in growth management for over 35 years, currently employed as a Director of Real Estate for Weyerhaeuser (formerly Plum Creek Timber Company) in Gainesville, Florida. He formerly served as President of Glatting Jackson, Inc. a community planning firm where he spent 27 years in private consulting practice. Tim has helped public and private clients by creating innovative solutions for great cities and his work in community design, regional planning and visioning, master planning, and integrated land use and transportation planning has helped communities throughout North America become more connected, economically vibrant and sustainable. He is an active member of the American Society of Civil Engineers. Activities have included co-chair of the 1999 and 2006 Specialty Conferences on Context Sensitive Solutions, co-chair of the Environmental Issues committee (1993 – 2010), and steering committee for the 2011 and 2013 Green Streets and Highways Specialty Conferences. Tim was born and raised in Brandon, Florida. He holds a Bachelor of Civil Engineering and a Master of City Planning from the Georgia Institute of Technology, and a Master of Planning from Florida State University. He and his wife, Carol, live in Longwood, Florida and are proud parents of three adult sons.

Board of Directors

Irela Bagué (Term through December 2027. Independent, voting member)

of Coral Gables, serves as the Director of Governments and Water Resilience for Florida and the Caribbean at Black & Veatch, a global infrastructure development firm. She was Miami-Dade County’s first Chief Bay Officer, where she focused on policies and funding for the restoration of Biscayne Bay, securing over $70 million in state and federal funding for water quality improvements. Irela chaired the Miami-Dade Biscayne Bay Task Force, leading the development of strategies for the bay’s long-term recovery, and previously served as Vice-Chair of the South Florida Water Management District, where she advanced critical water resource policies and the Comprehensive Everglades Restoration Plan. She also led the Miami River Commission and founded Bagué Group, a consulting firm specializing in strategic communications, water policy, and climate resilience. Irela is a member of the Greater Miami Chamber of Commerce Board and an alumna of the Presidential Leadership Scholars program. She also hosts the Resilient Forward podcast, highlighting environmental solutions.

Bob Cambric (Term through December 2027. Independent, voting member)

Of Apopka, is an urban planner specializing in public policy, growth management, community redevelopment, economic development, and consensus-building. Bob holds a Master’s of Science in Planning and a Bachelor of Arts in International Affairs from The Florida State University, with over 30-years of urban planning and implementation experience.  Bob assists citizens and organizations to identify and reach consensus on a range of diverse issues including neighborhood redevelopment, water quality protection, coastal development and emergency preparedness, economic development, public school facilities planning, and small business lending. During his career, Bob served as the Director of Policy and Planning for the South Florida Regional Planning Council, Intergovernmental Resources Coordinator for the Florida Department of Community Affairs, Assistant Director of the Apalachee Regional Planning Council, and Interim Executive Director of the Hannibal Square Community Land Trust in Winter Park, Florida, and a private sector consultant.  Bob is an inaugural member of the Florida Chapter of the American Planning Association’s Equity, Diversity, and Inclusion Committee and on the Board of Directors of SELF, a Florida-based non-profit that assists underserved communities by providing homeowners access to affordable and innovative financing for sustainable property improvements.

Lee Constantine (Term through December 2026. Independent, voting member)

of Altamonte Springs, a Seminole County Commissioner and a graduate of the University of Central Florida, has represented Florida as a public servant for 36 years. In 1978, he was elected the youngest person in the City of Altamonte Springs history, serving as Commissioner and Mayor for 14 years. In 1992, he was elected to the Florida House of Representatives where he served for 8 years. In 2000, Mr. Constantine was elected to the Florida Senate representing the citizens of Orange and Seminole Counties. He served until November 2010, only ending his distinguished Senate career due to term limits. On November 6, 2012, Lee Constantine was elected to the Seminole County Commission, District 3. Florida’s fragile environment is paramount to the Commissioner. In 2014, the Commissioner was awarded the prestigious Bill Sadowski Award by the 1000 Friends of Florida. Throughout his legislative career, Senator Constantine has sponsored significant legislation affecting the environment. Some of those include: Save Our Everglades (1997-2000), the Unified Building Code of Florida (1998, 2000), the Florida Forever Program (1999), Everglades Restoration & Funding (2000), the Brownfield Restoration Act (2000), the Wekiva Parkway and Protection Act (2004), the Florida Energy Act (2006, 2008), the Florida Water Resources and Springs Protection Act (2010), and the Florida Recycling Act setting a 75% recycling goal in Florida by 2020 (2010). Recently, Commissioner Constantine was reappointed by the Governor to serve his fourth term as Chairman of the Wekiva River Basin Commission, honoring his commitment to protect the Wekiva River while building the beltway around Central Florida. He is also currently on the board of the Florida Conservation Coalition (FCC) with Former Senator Bob Graham and environmental legend Nat Reed serving as the Vice-Chairman and is on the Board of 1000 Friends of Florida. Lee Constantine is the Chairman of the East Central Florida Regional Planning Council, the President of the Florida Regional Planning Councils, and the President of the Southeast Region for the U.S. Green Chamber of Commerce.

Henry Dean (Term through December 2027. Independent, voting member)

of St. Augustine Beach, began his career in government and politics after earning a Bachelor of Business Administration from the University of Iowa and a Juris Doctor from Florida State University. Henry worked as an environmental aide to Florida Governor Rueben Askew, an attorney for the State Land Planning Agency, and general counsel for the Florida Department of Natural Resources. He served as Executive Director of the St. Johns River Water Management District for 17 years, where he led efforts to establish minimum flows and levels for the Wekiva River System, protect springs, acquire buffers for Silver Springs and Silver Glen Springs, and restore over 200,000 acres of marsh along the St. Johns River. Henry also served as Executive Director of the South Florida Water Management District, where he oversaw the Comprehensive Everglades Restoration Program. Since 2005, he has worked as an environmental consultant.

Andrew Dickman (Term through December 2025. Independent, voting member)

of Naples, founded the Dickman Law Firm — a family-owned and operated firm offering legal services throughout Florida. Mr. Dickman is the City Attorney for the City of St. Pete Beach and an adjunct professor at the Ave Maria School of Law where he teaches land use and environmental law. His passion is advocating for open government, progressive urban planning, clean water, low impact development, working waterfronts, and protecting Florida’s history and unique places. Andrew was born in Tampa and raised rural on the Little Manatee River a few miles south of Ruskin, Florida. He attended Santa Fe Community college, graduated from the University of Florida, and earned his master’s degree in urban and regional planning from the University of Florida. Mr. Dickman worked in growth management at the North Central Florida Regional Planning Council, geographic information systems at the St. Johns River Water Management District and founded the Community Services Planning Center for the Department of Children and Families in Miami, Florida. While working for DCF Andrew attended the evening division at Nova Southeastern Shepard Broad Law Center. He was admitted to the Florida Bar in 2000. Mr. Dickman has served as the vice Mayor for Village of El Portal in Miami-Dade County, policy director for the Conservancy of Southwest Florida in Naples, and board member for the Environmental Advisory Council for Collier County.

Vivienne Handy (Term through December 2025. Independent, voting member)

of Wimauma is President & Principal Ecologist of Quest Ecology Inc. She is a certified Professional Wetland Scientist (PWS) possessing over 30 years of experience in natural resource management and environmental permitting. Vivienne’s career experience has consisted of conducting and managing a diverse range of field studies, impact assessments, and habitat management plans for public and private clients, involving a variety of projects, from roadway and bridge studies to mine reclamation projects. Vivienne’s recent focus has been on Habitat Conservation Plans (HCPs), preparing and implementing Ecosystem Management Plans (EMP), and the development and permitting of wetland mitigation banks. She’s currently directing the permitting and management for four mitigation banks and is overseeing implementation of the EMP prepared for Cross Bar & Al Bar Ranches in Pasco County. Vivienne was project manager on four regional multi-species HCP’s for local governments, and she permitted the first scrub habitat conservation bank in the State of Florida. Vivienne is currently working on the development and implementation tasks for two HCP’s for the Florida scrub-jay, for Charlotte and St. Lucie Counties.  Vivienne is well known as a community advocate and participated in the development and updates to the Wimauma Community Plan and is a member of the Wimauma Community Development Corporation. Vivienne currently serves as Planning Commissioner on the Hillsborough County City-County Planning Commission, as a member of the Hillsborough County Environmental Protection Commission’s Environmental Feedback Group and is a former member of the Transportation Planning Organization’s (TPO) Citizens Advisory Committee (CAC).  Vivienne enjoys hiking, traveling, and the company of her family of rescue dogs.

Carlos Lacasa (Term through December 2027. Independent, voting member)

of Coral Gables, is an accomplished attorney and executive with over 25 years of experience in insurance and health care law. Carlos served as Senior Vice President and General Counsel for MCNA Health Care Holdings, LLC, where he played a pivotal role in its growth into a leading national dental insurer before its acquisition by United Healthcare in 2020. He previously chaired the Board of Governors for Citizens Property Insurance Corporation, Florida’s largest property and casualty insurer, where he provided strategic leadership and oversight. Carlos also served in the Florida House of Representatives, chairing the House Appropriations Committee from 2001 to 2002, where he oversaw the state’s budgeting process and played a key role in shaping fiscal policy. Currently, Carlos manages investments and remains active in civic and professional organizations. He enjoys travel and personal hobbies and is committed to contributing his expertise to initiatives that benefit Florida’s communities.

Jim Swann (Term through December 2025. Independent, voting member)

of Cocoa, an investor and developer, is also vice chairman of Eckerd Connects, a nonprofit founded 50 years ago by Jack and Ruth Eckerd. Jim has an extensive and exemplary record of public service and leadership in environmental, social service, business and civic organizations. He and his wife, Jonnie, were honored by FLORIDA TODAY in 2016 for a lifetime of philanthropic achievement.

Victoria Tschinkel (Term through December 2026. Independent, voting member)

of Tallahassee, is the past State Director of the Florida Chapter of The Nature Conservancy. Tschinkel served as a senior consultant specializing in environmental matters with the law firm of Landers and Parsons from 1988 – 2002. During this period she served on the Board of Directors of Audubon of Florida and Resources for the Future in Washington, DC and a Member, National Advisory Committee on Environmental Technology and Policy, a Senior Advisory Committee at the Environmental Protection Agency as well as the National Commission on the Environment. Previously, in the Administrations of Governor Ruben Askew and Governor Bob Graham Ms. Tschinkel served in various positions in the environmental agencies at that time, and finally as Secretary of the Florida Department of Environmental Regulation from 1981 to 1987. She is a member of the National Academy of Public Administration, serves on the National Energy Advisory Board of the National Renewables Energy Laboratory and is a member of the Board of Directors of ConocoPhillips. But for her tenure at TNC, she has been a member of the Board of 1000 Friends of Florida since 1987.

Mark Watts (Term through December 2027. Independent, voting member)

of Deland, is a member of Cobb Cole’s Administrative, Land Use and Environmental Law Department. A native of Volusia County, Mark graduated from Florida State University in 1995 with a degree in International Affairs, and received a Juris Doctor from Stetson University College of Law in 1998. Prior to joining the firm, Mr. Watts served as an Assistant County Attorney in Pinellas County. He is a member of the Florida Bar and the United States District Court for the Middle District of Florida. Mark currently chairs the Volusia County Association for Responsible Development, and in 2009 was recognized as its member of the year. President of DeLand Breakfast Rotary, in 2011, he was named Young Business Leader by the Volusia/Flagler Business Report. Mark is past president of the DeLand Area Chamber of Commerce and also served on Leadership Daytona and Leadership DeLand.

Bryon White (Term through December 2027. Independent, voting member)

of New Smyrna Beach, is the co-founder and President of Yaupon Brothers, a Florida-based company specializing in Yaupon teas and herbal products, and co-owner of Eagle’s Nest Farms, Florida’s oldest organic farm. A dedicated conservationist, Bryon grew up in the Doris Leeper Spruce Creek Preserve and has worked extensively to protect it. Before his entrepreneurial ventures, Bryon served as a Captain in Volusia County Public Protection, where he held roles in law enforcement, EMT services, and ocean rescue. He has been recognized with numerous honors, including the Leadership Award for Citizenship from the Specialty Food Association and a spot on the “40 Under 40” list by the Daytona Beach News-Journal. His work has been featured in Forbes, The New York Times, and the BBC. In addition to his business and conservation efforts, Bryon is a commitment maker at the Clinton Global Initiative and serves on SXSW’s board of advisors. In 2024, he established the Wild Florida Conservation PAC to support pro-conservation initiatives. He resides in New Smyrna Beach with his wife and son, enjoying surfing and exploring Florida’s natural beauty.

Board Members Emeritus (Permanent Emeritus Status)

Lester Abberger, Emeritus

of Tallahassee is past chairman of 1000 Friends of Florida. He is an investment banker and lobbyist who serves or has served on the boards of a number of public, private, charitable, and cultural concerns including Florida First Capital Finance Corporation, Audubon Florida, the Tallahassee Bach Parley, Neighborhood Medical Services. the Governor’s Commission on Education, the National Trust for the Humanities, the Florida Automobile JUA, the Florida Healthy Kids Corporation, the Tallahassee Symphony Orchestra, and Florida Conservation Voters. He is chairman of the LeRoy Collins Institute for Public Policy at Florida State University and of Horizon Communities in Prisons, a national faith-based prison ministry. He is past chairman of the City of Tallahassee Urban Design Commission, Leadership Florida, Tallahassee Habitat for Humanity, the Seaside Institute, the Leon County Public Library System, the national Federation of State Humanities Councils, the Trust for Public Land Florida Advisory Council, the Museums of Florida History, the Florida Conservation Campaign, and the Florida Humanities Council, where he is an emeritus board member. He is a graduate of Davidson College where he served on the Board of Visitors and is a Knight Fellow at the University of Miami School of Architecture.

Robert S. Davis, Emeritus

is the founder of Seaside, Florida, described by Time magazine as “…the most astonishing design achievement of its era and one might hope, the most influential.” As the birthplace of a growing movement in land planning known as The New Urbanism, Seaside’s influence has spread widely and is helping to revolutionize town planning in America. Seaside has won numerous awards for its architecture and town planning and has been the subject of three books and countless articles. Mr. Davis is a recipient of the Rome Prize, Florida’s Governor’s Award and Coastal Living’s Conservation Award for Leadership. He is a principal in The Arcadia Land Company, a firm specializing in town building and land stewardship. Mr. Davis is an Emeritus Director of The Congress for The New Urbanism and a current Director of The Seaside Institute as well as a member of the Trust for Public Land’s Real Estate Advisory Council. He has served on Florida’s Environmental Land Management Study Committee to write and update Florida’s growth management legislation and on The Governor’s Council for Sustainable Florida. A graduate of Antioch College and the Harvard Business School, Mr. Davis is also a Fellow of the American Academy in Rome and the Institute of Urban Design.

James C. Nicholas, Emeritus

of Gainesville, is emeritus professor of urban & regional planning and emeritus professor of law at the University of Florida. In addition he was Associate Director of the Environmental & Land Use Law Program and from 1985-92 Co-Director of Growth Management Studies. He was a faculty member at Florida Atlantic University Department of Economics from 1969-85. Dr. Nicholas is the former Associate Director and Acting Director of the Joint Center for Environmental and Urban Problems. He has written numerous books and articles in the professional literature on growth management. He has worked with a large number of state and local governments on structuring programs of infrastructure finance. Dr. Nicholas received his B.B.A., M.A. from the University of Miami and his Ph.D. in economics, from the University of Illinois.

Roy Rogers, Emeritus

of Lighthouse Point, is the C.E.O. of Roy Rogers Associates and a Special Consultant for IBI Group, a full-service engineering company with offices world-wide. He was Senior Vice President of Arvida, acting as part of the team that developed the 10,500-acre planned, mixed-use community of Weston. Part of the Robert Trent Jones, Sr., team, Roy was involved in designing and developing golf courses world-wide. During the Admiral Rickover era he served on a nuclear submarine. Among his many civic activities, Roy serves on the Executive Committee of the Florida Conservation Coalition, is Chairman Emeritus of the Florida Chapter of The Nature Conservancy, and serves on the Boards of the Florida Earth Foundation and Everglades Restoration Task Force. He chaired the Budget Committee of the South Florida Water Management District. The past Vice Chair of the Florida Communities Trust and Florida Audubon, he chaired the Florida Commission on Ethics and is a recipient of the Timer Powers award for conflict resolution.

Past Members of the Board of Directors

Lee Moffitt, Tampa

Bob Parks, Coral Gables

Herb Peyton, Jacksonville

Steve Pfeiffer, Sarasota

Sibille Pritchard, Orlando

Nathaniel Pryor Reed, Hobe Sound

Robert Rhodes, Tallahassee

Carol Rist, Miami

Nancy Roen, Jupiter

Don Ross, North Port

Arthur Saarinen, Gainesville

Bruce Samson, Tampa

Jim Shore, Hollywood

Lester Simon, Miami

Rachel (Rae) Small, Cedar Key

Hudson Smith, White Springs

Jerry Sokolow, Miami

Earl Starnes, Cedar Key

Nancy Stroud, Boca Raton

Susan Summerall Wiles, Orlando

Theodore Taub, Tampa

Terry Turner, Sarasota

C. Allen Watts, Daytona Beach

Jack Wilson, Tampa

Paul Zwick, Gainesville