Board Members

Since its establishment, Ontario Streams' Board of Directors (BOD) has consisted entirely of volunteers. The BOD is made up of a president, vice president, treasurer, secretary, and 5-7 board members. These members vote annually to elect BOD executives.

The BOD is made up of interested members of the public, previous volunteers, and former Ontario Streams' staff. Due to the committed nature of Ontario Streams' BOD, multiple members have been involved since the inception of Ontario Streams in 1995. The BOD represents a diverse geographic area and consists of members with professional experience in education, strong knowledge in aquatic ecology/biology, and over 60 combined years of environmental stewardship.

The BOD meets quarterly, and the Annual General Meeting is held every year in November. The Annual General Meeting is open to all members of the public, which gives BOD members an opportunity to listen and respond to questions and comments from individuals from the communities Ontario Streams operates in.

The Board of Directors follows a set of protocols, and members agree on a series of rules to ensure Ontario Streams' public accountability, transparency, and to diminish the probability of personal conflicts upsetting the operation of the organization. Specifically, the series of protocols identifies rules on meeting conduct, finance, and general responsibilities including time commitment, committee involvement and conflicts of interest.

Siobhan Neil


Siobhan is a graduate of the University of Guelph's Environmental Science program where she obtained her Honours B.Sc. in Natural Resource Management with a focus in Aquatic Ecosystems. She also holds a post graduate certificate in Environmental Assessment and Management from Royal Roads University. Siobhan is a past employee of Ontario Streams having worked as a Project Coordinator/Biologist for several years. She has served on the Board of Directors since 2010.

Bob Giza

Past President

Mr. Giza obtained his Honours B.Sc. from the University of Toronto's Environmental Science Program in 1969, as well as his B.Ed. in 1972. From 1978 to 1990 he ran a full credit environmental science course each summer out of Algonquin Park. Mr. Giza was also the founder of the Chaminade College environmental club and Adopt-A-Stream group on Black Creek, where he taught. He has lead this group over the years as they have won the Mel Lastman's North York Award (1998) and the City of Toronto Green Award (2007). Bob now concentrates his environmental efforts in the Fergus - Guelph area.

David Gambin


Mr. Gambin holds a BASc in Chemical Engineering (Minor in Sustainability Energy) from the University of Toronto as well as an MBA from the University of Glasgow. David leverages his well-rounded experience from various environmentally focused areas including; field work at Ontario Streams, operations and development work in the solar industry, and project management work in the wildlife telemetry industry. David joined the Ontario Streams Board in 2014 and enjoys passing his time in the bow or stern of a canoe in the remote Canadian wilderness.

Tino Romano


Tino Romano obtained his Honours B.Sc. (Entomology and Chemistry) from the University of Guelph, as well as his B.Ed. from the University of Toronto. Since 1999, he has been a science teacher at Chaminade College School, during which time he has also been active in the Black Creek Adopt-A-Streams group. Prior to this, Tino Romano was a science teacher for two years with the Dufferin-Peel District School Board and a resident intern for 4 years with the Toronto Region Conservation Authority Boyd Field Centre. Mr. Romano has been with the Ontario Streams Board of Directors since 2002.

Celeste Longhurst

Celeste Longhurst is the Corporate Engagement Specialist at Credit Valley Conservation Foundation, where she works with corporate leaders to create impactful corporate-charitable partnerships that support local conservation initiatives. Celeste was an Ontario Streams board member from 2013-2015, and recently re-joined the board in 2018. Her background includes a BA in Environmental Science from Queen's University, a past member of TRCA's Don Watershed Regeneration Council (2009-2015), past Development Officer - Corporate Partnerships and Grant Program Manager (2011-2016) and the Canadian Youth Delegate to Svalbard for a UNEP-led climate change training session (2011).

Eligio De Marco

Mr. De Marco obtained his Honours B.E.S (Environmental Studies) from York University where he specialized in Environmental Management. His involvement with Ontario Streams began during his high school years as a member of the Chaminade College dopt-a-Stream group on Black Creek. He joined the Streams Board of Directors in 2006. Mr. De Marco has also been an active member with the Metro East Anglers since 2001 and has been volunteering at the Ringwood Fish Culture Station since 2006.

Grant Baverstock

Mr. Baverstock's involvement with Ontario Streams began during his high school career where he was a founding member of the Chaminade College Adopt-A-Streams group. He graduated from the Humber College Landscape Technician Program with honors in 2005 and then went on to establish a landscape design & construction company and a native plant nursery while employed as an Arborist with Davey Tree Co. In 2007, Mr. Baverstock was hired full time at Parc Downsview Park to help develop the 40-acre reforestation project, and maintain the parkland. Since then, Mr. Baverstock took a horticultural position with the City of Brampton and oversees, assesses, and maintains the municipalities horticultural irrigation systems. Mr. Baverstock has been on the Ontario Steams Board since 2007 in different capacities. In his spare time, Grant is an active outdoorsman and competitive pistol shooter.

Heather Lotimer

Heather holds a BSc in Environmental Science (Minor in Natural Resource Management and Biotic Systems) from the University of Guelph as well as an MBA from the University of Glasgow. Heather utilizes her well rounded experience from various environmentally focused areas including; field work at Ontario Streams and the Ministry of Natural Resources as well as account management in the wildlife telemetry industry. Heather joined the Ontario Streams Board in 2014.

Horst Truttenbach

Mr. Truttenbach has been with Ontario Streams since its inception in 1995. In addition to being a board member, he has been actively involved in the hands-on stream rehabilitation work that has taken place on both Boyce's and Centreville Creeks within Caledon East, leading a group of community volunteers since 1998. He is also a member of the Humber River Alliance and was the chair of the Caledon East Wetland Community Action Site.

Michael F. Giza

Michael Giza has been an Ontario Streams Board Member since 2004. He graduated with a B.A. (Philosophy) from the University of Toronto and continued with a career involving Human Resources and Labour Relations, Business Administration, Sales and Marketing; retiring in 2008. In addition to his involvement with Ontario Streams, Mr. Giza is Past-President and Director of the Miskwabi Area Community Association, a member of Ontario Nature, Wilderness Canoe Association and Bird Studies Canada. He has participated in the BSC Canadian Loon Lakes Survey since 1994 and the OFAH Invasive Species Watch Program since 2003.

Asif Pradhan

Bio pending.