Our Team


Britany Ziems
Executive Director

As Executive Director of Citizens for a Better South Florida, Ms. Ziems cultivates community partnerships to develop effective collaborative programming and implements the organization’s mission to provide environmental education to the underserved community of South Florida. Prior to this position, she worked for the Earth Ethics Institute at Miami Dade College as an AmeriCorps VISTA Program Coordinator. She recruited and trained students for civic engagement and experiential learning opportunities related to environmental stewardship, healthy futures, and economic impact. She received her Master of Business Administration from Florida International University and her Bachelor of Science in Environmental Science from the University of Florida School of Natural Resources and Environment, as well as three minors in Mass Communication, Sustainability Studies, and Ethics. While attending the University of Florida, she also conducted research concerning tropical cyclones and received a certificate in Climatology and Meteorology.

Marina Barrientos
Program Director and Lead Educator

Marina Barrientos is the Program Director and Lead Educator for CITIZENS’. Ms. Barrientos facilitates Community Science Workshops, which are after school programs designed to promote science and environmental awareness through experimentation and hands-on learning for students in grades K-12. She received a Bachelor’s degree in Sustainability and the Environment from Florida International University and an Associate in Arts degree in Environmental Science from Miami Dade College. Ms. Barrientos is also a former intern with Miami-Dade County’s Office of Resilience. She conducted research and collected data on current trends and developments related to sustainability for the community. Ms. Barrientos is a passionate environmentalist and has been actively volunteering with beach cleanups and park restoration events like Baynanza and International Coastal Cleanup Day, for over 22 years.

Raquel Martinez
Program Assistant

Raquel Martinez is the Program Assistant at Citizens for a Better South Florida pursuing a Bachelor’s in Arts Degree in Environmental and Sustainability Studies at Florida International University. Her desire for living sustainably and advocating for the preservation of our environment and the diverse species that thrive within has been fueled by her experience working with organizations that promote environmental protection and activism, such as the Earth Ethics Institute at Miami Dade College, Fairchild Tropical Botanic Garden, and the DuMond Conservancy for Primates and Tropical Forests. Raquel looks forward to gaining further experience at CITIZENS’, embodying her beliefs and working towards bettering the future of our environment and those who live in it.

Juan Gualberto Fernandez
Nursery Manager

Juan Gualberto Fernandez is CITIZENS’ Go Native! Nursery Manager. He graduated from the Institute of Higher Education in Cuba with a Bachelor of Science in Biology and Education. He is a Certified Arborist through the International Society of Arboriculture and a native plant expert. Mr. Fernandez serves as a consultant to CITIZENS on Urban Greening and Community Forestry projects. He is the biologist who pioneered the ecological restoration of Virginia Key. Mr. Fernandez is currently the Senior Park Naturalist for the City of Miami.



Board of Directors


Arsenio Milian
President, Milian Swain & Associates


Erwin Bastian
AVP, Store Manager, TD Bank


Deborah Swain
Vice President, Milian Swain & Associates


Alberto J. Herrera, Ph.D.



Gary Milano
Fernando Craveiro de Sa, Ph.D.
PCL Construction, Inc.

Advisory Board

Brenda Westhorp, P.E.
George E. Puig, RLA
Ramon Ferrer
Gilbert C. Betz, Esquire
Gilbert C. Betz, P.A.
Deena R. Bell Llewellyn
President, Bell Landscape Architecture, Inc

You are donating to : Citizens For A Better South Florida

How much would you like to donate?
$50 $150 $250
Would you like to make regular donations? I would like to make donation(s)
How many times would you like this to recur? (including this payment) *
Name *
Last Name *
Email *
Additional Note