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Maine Lakes

Board & Staff

Board of Directors | Advisory Board | Staff

Barb Welch

Phoebe Hardesty
(New Gloucester)

Sue Motley
Board Member

Bill Monagle
Vice President
Bill Monagle's Photo

Bob French
Board MemberBob French

Joe Musante
Board Member

Sibyl French

Linda Bacon
DEP Advisor
Linda Bacon's Photo

Advisory Board | Board of Directors | Staff

The Lake Stewards of Maine (LSM) has formed an Advisory Board (AB) to provide input and guidance to the Board of Directors, staff and volunteer lake monitors on a wide range of technical, organizational and developmental matters. The group consists of individuals with unique expertise that is relevant to the operation and development of the program.  We are pleased to welcome this group of respected and well-known professionals to the organization, and we look forward to working with them as volunteer lake monitoring in Maine continues to evolve.

Aria Amirbahman | Roy Bouchard | Holly Ewing | C. Barre Hellquist | Lloyd C. Irland | David Littell | Steve Norton | Firooza Pavri | Matt Scott | Ken Wagner | Pixie Williams | Karen Wilson

Aria Amirbahman SmWAria Amirbahman has been a professor of environmental engineering in the Department of Civil and Environmental Engineering at the University of Maine since 1997. He is a graduate of the University of California at Irvine. His areas of research interest are aquatic chemistry and contaminant transport in lakes, wetlands, groundwater systems and coastal sediments. In particular, he has studied speciation and transport of phosphorus and metals (such as mercury, iron, aluminum and manganese), and their interactions with mineral surfaces and natural organic matter in natural and engineered systems. He is a cooperating faculty member with the School of Policy and International Affairs, and the Center for Research on Sustainable Forests at the University of Maine. Aria has been a visiting professor at the Water Resources Division, U.S. Geological Survey, Menlo Park, CA (1/04-9/04 and1/11-9/11), and the Division of Soil Protection at the Swiss Federal Institute of Technology in Zurich, Switzerland (5/98-9/98). He has five years of professional experience as an environmental and water resources engineer in the public and private sectors, and is a registered Professional Engineer. In addition to his teaching and research duties, he has performed consulting on environmental issues for public agencies and private companies.


Roy Bouchard retired in 2012 from the Maine Department of Environmental Protection after nearly three decades of working on freshwater protection, most of which has been involved with assessment and protection of Maine’s lakes.  As Biologist III, Roy oversaw the Lake Assessment Program at DEP for a number of years, which also included the Invasive Species Program for aquatic plants.  While the Lakes Program focused on promoting volunteer action, especially water quality monitoring, it also had an emphasis on habitat protection, applied research in collaboration with several colleges, and such diverse topics as the economics of lakes, watershed protection and shoreline evaluation.

After acquiring an MS in Water Resources Management from the University of Wisconsin-Madison, Roy moved to Belgrade with his wife Susan, where they lived for the last thirty years. Major pastimes include travel, camping, hiking and winter trekking, kayaking, and canoeing along with continued involvement in the Belgrade Regional Conservation Alliance.


Holly EwingHolly Ewing is an Associate Professor at Bates College where she is appointed as a scientist within the Environmental Studies Program. She teaches field classes in soils, water, ecosystem ecology, and general environmental science. Her research crosses fields of modern ecosystem ecology, paleoecology, geology, and biogeochemistry as she investigates ecosystem development and linkages among atmospheric, terrestrial, and aquatic ecosystems. She is particularly interested in combining approaches from modern ecology and paleoecology in the investigation of history and the drivers of changes in terrestrial and aquatic ecosystems. In the aquatic realm, her current research projects include an investigation of cyanobacteria as potential drivers of changes in lakes, a study of mercury in stream food webs, and development of a smart phone app to enable citizen scientists to contribute data about lakes to a central database. She holds a BA in Geology from Carleton College and a PhD in Ecology from the University of Minnesota.


C. Barre HellquistC. Barre Hellquist is a Professor of Biology, Emeritus at Massachusetts College of Liberal Arts. He received his Ph.D. in Botany from UNH where he worked on the correlation of the Potamogeton (pondweed family) to water chemistry and their distribution in New England.

Barre is co-author of Aquatic and Wetland Plants of Northeastern North America.  His enthusiasm for the study of aquatic plants has taken Barre across the United States and Europe, to China, Siberia, and Australia in search of new and interesting species.  Working with his son, C. Eric Hellquist, an assistant professor of biological sciences at SUNY-Oswego, Barre is currently involved in a multi-year project documenting the flora of Yellowstone National Park.

In his “retirement,” Barre continues to teach classes intermittently at MCLA, leads field-based seminars (such as those at the Eagle Hill Institute on the coast of Maine) and continues his research around the globe.  He also teaches the aquatic plant mini-course, often with his son Eric, at the University of Michigan Biological Station.  He spends his free time dabbling in the private pond on his property in Massachusetts, enjoying his beautiful collection of species water lilies and also collects 3 x 5 flags, especially U.S. historical , Australian, Canadian and south Pacific flags.


Lloyd C. Irland grew up in Illinois and earned his Ph.D. at Yale. He served with the U.S. Forest Service, and also in Maine state government. Since 1987 he has been a consultant, now semi-retired. His work has covered a wide range of subjects, mostly in the Northeastern US and eastern Canada.  He became involved in early US national Climate Change Assessments which led to an interest in understanding whether ice out dates on Maine lakes might be an indicator of climate change.  For several years he has written for local publications on the answer — which is yes, trends in ice out dates are a convincing indicator of climate change.  Irland has written 5 books and more than 300 articles.   His work on forests has brought him to Canada, China, India, Germany, Austria, Greece, Bhutan, France, Yugoslavia, Mexico, and Ukraine. He is a Fellow of the Society of American Foresters.   He serves on the Select Board in Wayne and is writing a book on Maine’s rivers.


David LittellDavid Littell served as Maine’s Commissioner of Environmental Protection from 2005 to 2010, following two years as DEP’s deputy commissioner.  During those years of DEP service, David was heavily involved in a number of initiatives to protect significant wildlife habitats including wading, waterfowl, shorebird and vernal pool habitats, to improve Maine’s water (and air) quality, and remove toxics from consumer products and carry out Maine’s Climate Action Plan.  David has been a volunteer lake monitor on a pond where he and his daughters enjoy swimming, canoeing, kayaking, and watching fish and wildlife.  He is also a trained invasive plant patroller.  He lives in Portland with his two daughters Brickley and Georgia.


Steve NortonSteve Norton retired from the University of Maine in 2008, having taught there and conducted research for 40 years. Currently, he is Professor Emeritus in the School of Earth and Climate Sciences. Early in his career, he spent about 10 years with the U. S. Geological Survey and the Maine Geological Survey, unraveling the history of crustal rocks in western New England and Maine. About 1970, he switched his focus to the environmental aquatic chemistry of watersheds, groundwater and surface water, and paleolimnology. His research now is concerned with the chemical interaction among water, soil, bedrock, and humans. His “work” has taken him to many places including close to the North and South poles, Europe (with two years in Norway), and to our neighbors – Canada and Mexico. He emerged from teaching retirement in 2012 to teach his graduate course in geochemistry. Currently, his research deals with the biogeochemistry of Hg and P, and the interaction of Al and rare earth elements (REEs) in watersheds and lakes.


Firooza PavriFiroozaPavri Iceland W is professor of geography in the Geography-Anthropology program at the University of Southern Maine.  She is currently also the Chair of the Master’s program in Policy, Planning, and Management at the Muskie School of Public Service.  Firooza received her M.A. and Ph.D. degrees at the University of Toledo and Ohio State University, respectively.  She is originally from India, and research and family take her back frequently.  Firooza teaches and does research in the area of environmental geography, with a focus on society-environment interactions, natural resource conservation & policy, sustainable development, and geospatial technologies, including remote sensing and GIS.  Her research uses remote sensing and other geospatial tools and techniques to monitor landscape changes across wetland, freshwater, urban, and forested ecosystems, both in the United States and India.  She is the co-author of two books, Wetland Environments and Windscapes: A Global Perspective on Wind Power.  More recently, her work has focused on examining the role of citizens and the public in conservation stewardship.


Matt ScottMatt Scott is an Aquatic Biologist and a Certified Fisheries Scientist by the American Fisheries Society. He is retired after 38 years of service in Maine State Government, including service as Deputy Commissioner of the Department of Inland Fisheries and Wildlife. Matt is past president of the North American Lake Management Society and past president of the Sportsmen’s Alliance of Maine and served eight years on the Board of Environmental Protection. Matt is founder of the DEP lakes program in 1970 and the LSM in 1971. He is a Master Maine Guide and a backyard beekeeper for 50+ years. He also served on the LSM Board of Directors for three years.


Ken WagnerKen Wagner holds degrees from Dartmouth College and Cornell University, with his Ph.D. earned in Natural Resource Management in 1985.  He has over 34 years of experience working on a variety of water resources assessment and management projects, including lake, river and watershed assessment and management, TMDL development, regulatory processes, and educational programs.  In 2010 he started Water Resource Services, a small company with a focus on water supply protection and lake management consulting. He is a former President of the North American Lake Management Society and the current Editor in Chief of Lake and Reservoir Management, a peer-reviewed journal.


Pixie Willams Pixie Williams received her B.S. degree from Cape Breton University, Sydney, Nova Scotia, and later, her Masters in Plant Systematics from the University of New Hampshire. Pixie’s early professional career was in education, as a school teacher in private grade schools.  In the late 1970s through early 1980s Pixie worked as a volunteer at the Cary Arboretum, New York Botanical Garden.  It was here, under the direct tutelage of Dr. Thomas Elias, director of the US-USSR Botanical Exchange, that Pixie developed her keen interest and enthusiasm for plants, and in particular, plant systematics.  (Systematics is the study of the how life forms diversify through evolution over time.)  Pixie credits her invaluable “on the job education” at Cary Arboretum with her decision to make plants her second career.

Upon receiving her M.S. Degree at UNH–where she studied under Dr. Garret Crow, co-author of Aquatic and Wetland Plants of Northeastern North America—Pixie worked as a Research Associate in Botany, at the Bra d’Or Institute, Cape Breton University; and later as an Adjunct Professor of Plant Biodiversity. She was also a Research Associate in Botany at the Nova Scotia Museum of Natural History in Halifax.

In 2012, Pixie celebrated nine years of service to the LSM as a Certified Invasive Plant Patroller, and at 87 years old, still spends many hours in her kayak every summer, keeping a watchful eye on aquatic plants of Casco and Otisfield and beyond.  As energetic as she is generous, Pixie shares her passion for botanizing with local school children and community members, and plays an integral role in Pleasant Lake and Parker Pond Association’s ongoing efforts to eradicate variable-leaf milfoil from Lily Brook and Pleasant Lake.  Pixie is a major contributor to the LSM’s aquatic plant herbarium collection, and has been formally honored by the LSM for her many contributions to the Program and to Maine lakes.


Karen WilsonKaren Wilson earned a M. S. and Ph.D. in Limnology/Zoology from the University of Wisconsin – Madison, after receiving a B.S. in Fisheries and Wildlife Biology from the University of California at Davis. She is a faculty member in the Department of Environmental Science at the University of Southern Maine where she teaches courses with an emphasis on aquatic ecology. Karen has researched the long-term impacts of invasive species such as the rusty crayfish and zebra mussels on community and ecosystem properties, and has worked on several aquatic restoration projects. She is interested in ecological subsidies to ecosystems, and has been working on marine-freshwater linkages as typified by alewives, a diadromous fish with a strong presence in Maine. She had been continuing her work on crayfish by compiling a state-wide database that tracks the distribution of native and introduced crayfish species. She is always excited to receive new specimens to add to the database, and is particularly interested in lakes and streams with an unusually high number of crayfish, or reports of fewer crayfish than in years past. Karen lives in Portland with her husband (also an aquatic ecologist) and her three-year old daughter, an ecologist in training.

Staff | Advisory Board | Board of Directors

Adam Zemans | Roberta Hill | Alison Cooney | Christine Guerette | Tristan Taber | Drew Perlmutter


Adam Zemans – Executive Director

Adam has a special passion for lakes in Maine and Lake Stewards of Maine’s (LSM’s) mission, much of which originates in five years of YMCA camp in the Thousand Islands of New York State as a child, and later, visiting with family in Maine. Adam is deeply committed to helping cultivate cooperation, dialogue and leadership toward protecting Maine lakes and promoting lake stewardship in the face of unprecedented environmental impacts, particularly related to climate change. Adam views LSM, more than anything, as a learning community that is entrusted with gathering and disseminating a variety of data at a pace and level of quality that exceeds the speed and force of those impacts. He is a strong believer, teacher and student of Citizen Science, Sustainability Science and Lake Stewardship as integral parts of the “Sustainability Revolution.”

Therefore, Adam seeks to nurture and leverage stakeholders’ participation and expertise, in a big and inclusive tent, including diverse Maine citizens, residents and visitors, as co-curators of the future of Maine’s 6,000 lakes and their watersheds; facilitate conversations among those stakeholders about what “credible scientific information” means, and help stakeholders respond to watershed vulnerabilities and risks in the most collaborative, efficient and effective ways possible. He asks, “what are the most important ways to holistically define and promote lake health?”

Adam began his journey with Lake Stewards of Maine in 2008 with his first trip to the Deep Hole on Highland Lake of Windham/Westbrook/Falmouth when visiting with Dr. Keith Williams, a veteran volunteer and scientist. In 2016, Adam was certified in Secchi Disk and Dissolved Oxygen monitoring by LSM, as well as invasive plant species identification. In 2017, Adam was a Visiting Outreach and Stewardship Coordinator at Lake Stewards of Maine (then Maine Volunteer Lake Monitoring Program) and spoke at the LSM Annual Conference regarding social science elements of the Citizen Science Revolution. In 2018, Adam brought Bolivian high school students to Maine for experiential education in lake and coastal monitoring. Prior to that, Adam served as Executive Director for a multi-track diplomacy organization based out of Virginia and launched his sustainability-focused career as the Founder and Executive Director of an environmental health organization in Bolivia that, in 2006, transformed its programming to center on climate change science and diplomacy.

Adam holds a Juris Doctor degree from Georgetown Law Center and is a Maryland-licensed attorney. He holds a Masters in Social Work from the University of Southern California with an organizational leadership concentration as well as a Masters in Conflict Analysis and Resolution from George Mason University and a Masters in Sociology from York University, Toronto, Canada. He is a graduate of Oberlin College and The National Audubon Society Expedition Institute. Adam is a PhD Candidate in Conflict Resolution Studies at Nova Southeastern University, with a dissertation focus on collaborative stakeholder response to climate change impacts in Maine. He is currently based on the Blue Hill Peninsula. Since 2008, he has been a licensed Maine Sea Kayak and Maine Recreational Guide and obtained a 2021 black belt in Shito Ryu Karate.


Roberta _Staff Pic

Roberta Hill – Invasive Species Program Director

Roberta is an aquatic ecologist and environmental educator.  She has been active in the field of lake protection and community outreach in Maine for over twenty years, leading community-based projects that have ranged from watershed surveys, to non-point source remediation, to invasive aquatic plant monitoring.  She has also been instrumental in the creation and development of some of Maine’s most successful and long-standing lake education programs.  Currently the Invasive Species Program Director for Lake Stewards of Maine, Roberta is the originator and coordinator of LSM’s  Invasive Plant Patrol (IPP) program.  Working in close collaboration with lake associations, conservation groups and State Government, the IPP program has now trained over 4,500 individuals, including volunteers, professionals, agency personnel, students, teachers and others, to screen Maine waterbodies for the presence of invasive aquatic plants.  LSM’s Invasive Plant Patrol program is seen nationally and internationally as a model for citizen-based early detection.  Roberta is the principal author of the Maine Field Guide to Invasive Aquatic Plants and co-author of Citizens’ Guide to Invasive Aquatic Plant Management.


Alison Cooney – Development Director

Alison joined the LSM staff in August of 2017. Born and raised in southern Maine, she spent many summers at her family’s camp on one of Maine’s beautiful lakes. Her curiosity in learning about the natural world led her to a Bachelor of Science degree in Ecology and Evolutionary biology from the University of Connecticut.  Directly after college, Alison moved to Alaska for a summer seasonal job and ended up staying for 18 years! She worked for the research division of the Forest Service supporting aquatic and terrestrial invertebrate, and wildlife research projects.

Soon after arriving in Alaska, Alison was recruited to volunteer with the Juneau Raptor Center. She thoroughly enjoyed the community, dedication and passion that one generally finds with non-profit organizations. Over the past 20 years, Alison has volunteered with numerous non-profit organizations, dedicating hundreds of hours focused towards fundraising and outreach efforts. The LSM Development Coordinator position was a natural fit for Alison. She is excited to be a part of an organization that supports lake preservation, passionate volunteers and has an extremely dedicated staff.


CG&plantsChristine Guerette pursued her Bachelor of Science in Biology at the University of Maine.  She is keenly interested in limnology and aquatic biology and has worked on a number of research projects involving aquatic systems during her school career.  She has lived on the shores of Maine lakes most of her life and has an interest in keeping our lakes and rivers healthy and pristine.  She loves boating, kayaking, swimming and anything else that keeps her near the water.  Christine has been with LSM for years and loves the opportunities it provides to work closely with dedicated volunteers and other interested parties, and to educate the public about important environmental issues.


Tristan Taber – Aquatic Scientist & Technical Programs Manager; Acting Director of the Water Quality Program

Tristan joined the LSM staff in early 2019. He is a biologist and landscape architect whose work has greatly focused on water resources. He has performed work and research in restoration activities, bio-geomorphic processes, and stakeholder outreach. Recently his work has also heavily involved data visualization, scripting, and toxin analysis.

His earliest memory of scientific exploration was watching rivulets and fractal patterns form in a dirt driveway. Seeing the non-uniform way that channels developed as water, glittering in the sunlight, flowed down from a hose up the hill was fascinating, and stays with him to this day. Tristan hopes to continue developing data and resources for people to learn about the serious issues of climate change and anthropogenic ecological impacts to aquatic environments, as both are serious issues of health and inequity.

Tristan is the treasurer of New England Estuarine Research Society (NEERS), and a member of the North American Lake Managers Society (NALMS) and the American Society of Landscape Architects (ASLA). He can be found volunteering with the Maine Turtle Roadkill Survey, a local Humane Society, or a local conservation commission, when he is is not working on his house.  Tristan studies with a martial arts group focused on historical European treatises, and enjoying all manner of outside activities ranging from ultimate to hiking to soccer to kayaking to roundnet.


Drew Perlmutter – Education and Outreach Coordinator

Drew discovered her passion for both environmental conservation and education at Bates College, where she got her B.A. in Environmental Studies with a concentration in Ecology.  For two years she was a Teaching Assistant at Chewonki Elementary and Middle School, a small place-based environmentally conscious school in Midcoast Maine. There, she developed her strong foundation as an educator and team player when collaborating with her teaching team to produce an effective and engaging multi-disciplinary curriculum for the students. She also had the opportunity to lead wilderness trips for the students, including backpacking, canoeing, and cross country skiing. It was during this experience that she uncovered her deep passion for helping foster meaningful relationships between people and their land. She also worked as an assistant science teacher at The Chapin School in New York City where she found she could no longer ignore the pull of the outdoors.

Drew joined Lake Stewards of Maine in summer 2021 and was immediately impressed with the dedication and rigor of the volunteers. Drew hopes to combine her love of education, community-building, and the natural world to inspire others to become stewards for their lakes.

When not working with volunteers, Drew enjoys creating art, reading, biking, and camping.

Contact information

Contact us at:     Phone: 207-783-7733       Email:

Hours of visitation at LSM Office:
  Mondays 9:00am - 3:00pm         Wednesdays 9:00am - 3:00pm
  Thursdays 11:00am - 3:00pm       Or by appointment

Our Mission

Lake Stewards of Maine (LSM) works to protect Maine lakes and to promote lake stewardship through widespread citizen participation in the gathering and dissemination of credible scientific information pertaining to lake health.


LSM is a non-profit 501(c)(3) organization committed to the collection of information pertaining to lake water quality. For 50 years, trained volunteers throughout Maine have donated their time so that we may all learn more about one of Maine’s most beautiful and important resources — our lakes.