Meet the team

Suzanne Mrozak

Volunteer Coordinator


I am privileged to be the Volunteer Coordinator for the Tree Spotters Citizen Science program, launched under Lizzie Wolkovich’s direction in May of 2015. As a certified Project Manager with a Masters degree in technical and professional writing, I worked for many years in biotech, where my last full-time job involved developing a global information and records management program. However, my undergraduate degree (from McGill University in Montreal) was in biology/psychology and I worked for many years as a research assistant in academic medicine, including a stint at Harvard Medical School before I moved to industry. I am very pleased to have the opportunity to return to the world of scientific research and explore topics I have become passionate about, including citizen science in general and the Tree Spotters program in particular. Walking in the Arboretum has been one of my favorite activities since I moved to Roslindale in 1999. My other interests include gardening, photography (you can see a few of my photos on my website), and traditional folk music. Over the years, I have been on the boards of several non-profit all-volunteer organizations, including the Folk Song Society of Greater Boston.

Danny Schissler

Volunteer Coordinator & Research Intern


Danny Schissler is an ecology and plant enthusiast who works as an intern at the Wolkovich Lab and a horticulturalist in downtown Boston. Since June of 2015, he has helped design and coordinate Tree Spotters training sessions and events. He earned his MFA in photography from the Massachusetts College of Art and Design in 2014, and holds a BA in Archaeology and Architectural Studies from Tufts University. His artwork and writing can be found on his blog.

Cat Chamberlain

Tree Spotters Project Manager


Cat is a graduate student in the Wolkovich Lab at the Arnold Arboretum. She is looking forward to working alongside the amazing volunteers and training future Tree Spotters. Cat is very interested in citizen science and is eager to facilitate the Tree Spotter project. As a plant ecologist, she is interested in understanding how anthropogenic climate change impacts plant communities. In November 2015, Cat graduated from Trinity College Dublin with a Master's degree in Biodiversity and Conservation. For her dissertation, she investigated the vegetation composition of grazing lawns along an anthropogenic impact and grazing pressure gradient at Gorongosa National Park in Mozambique. She would like to continue focusing her research efforts on plant community composition and how temperature, precipitation, and photoperiod affect plant phenology.

Past Project Managers

Jehane Samaha

Tree Spotters Project Manager


Jehane is a research technician in the Wolkovich Lab at the Arnold Arboretum. She has enjoyed helping to kickstart this citizen science project, and especially loves training Tree Spotters and answering their fabulous questions about the phenological events they observe.

Temporal Ecology Lab blog
one lab two worlds:

In Boston
Arnold Arboretum
1300 Centre Street
Boston, MA 02131

In Cambridge 
Harvard University Herbaria
22 Divinity Ave
Cambridge, MA 02138
ph: 617.384.5495