David Puttock, Ph.D., R.P.F.


David is a Registered Professional Forester with over 40 years’ experience as a forest manager, educator, and forestry consultant.  His academic qualifications include an undergraduate degree in Forestry (B.Sc.F.) (University of Toronto); an M.B.A. (York University); and a Ph. D. in Agricultural Economics (University of Guelph). David has authored numerous scientific articles and technical reports and has presented several papers at international forestry conferences. He presents on forest management planning at the Faculty of Forestry (U Toronto). He is a member of the Ontario Professional Forester Association, Canadian Institute of Forestry, Forests Ontario, and the Society of American Foresters. David’s licences and certifications include:

  • Registered Professional Forester #1123
  • Managed Forest Plan (MFTIP) Approver #003
  • Certified Ontario Tree Marker # TM-00323-L1
  • Butternut Health Assessor # 245  


The company’s staff includes Professional Foresters, a Forest Entomologist, ISA Certified Arborists and technicians. Our expertise and experience enables the company to participate in a variety of challenging assignments and projects including forestry planning, insect surveys and monitoring, scientific research, and urban forest inventory among others. Together we provide innovative, practical, and cost-effective solutions for managing private and public woodlands, urban forests, and forested landscapes.

a sample of our clients

407 Express Transit Route (ETR), Aurora Cable Internet, Aurora Community Arboretum, Baker-Turner, Bancroft Minden SFL, Bauman Sawmill, Betz Pools, Canadian Food Inspection Agency, Chippewas of Georgina Island, City of Barrie, City of Guelph, City of Toronto, Concord Engineering, Domtar, Ducks Unlimited, Dufferin County, Gartner Lee, Greif Bros. Canada, Guizzetti Developments, Haliburton Forest & Wildlife Reserve, Halton Region, Hamilton Conservation Authority, iPlanCorp, Kiewit, LaFarge, Lake Simcoe Region Conservation Authority, Lawton Ardaugh Corp, Lennox & Addington County, Long Point Region Conservation Authority, Mazinaw-Lanark Sustainable Forest Licence (SFL), Middlesex County, Nature Conservancy of Canada, Niagara Region, Norforlk County, Northumberland County, Oak Ridges Moraine Land Trust, Ontario Ministry of Natural Resources, Peterborough County Forest, Pratt Constructiom, Regional Municipality of Durham, Regional Municipality of York, Simcoe County, Simcoe County District School Board, SunOpta, Town of Aurora, Town of Georgina, Town of Newmarket, Town of Orangeville, Town of Whitchurch-Stouffville, Trees Ontario, Upper Canada College, Viva NEXT, Windfall Ecology Centre

Kathleen ryan, ph.d.

Forest Entomologist

Kathleen Ryan earned her PhD from the University of Toronto (Faculty of Forestry); her expertise is in forest insect detection and management, and invasive species research. Other academic qualifications include a MSc in Entomology (University of Manitoba) and a BSc in Geography (University of Winnipeg). In addition to authoring scientific publications and presentations, Kathleen is active in outreach and educational initiatives to inform the public of insect threats to trees. She is a member of the Entomological Society’s of Canada and Ontario, and the Ontario Invasive Plant Council.

KATHLEEN CONNERS, ISA Certified arborist

Laboratory and Field Technician

Kathleen has a Diploma in Ecosystem Management Technology (3-year program), with an Urban Forestry certification (Sir Sandford Fleming College). She began her career as a climbing arborist and plant health care technician. Currently, Kathleen assists with a range of projects including rearing insects for biological control, data collection, street tree and forest resource inventories and tree health assessments. She volunteers for the Haliburton Highlands Outdoors Association Community Fish Hatchery. She is working toward her ISA certification. Kathleen’s certifications and licences include:

  • ISA Certified Arborist ON-2098A
  • ISA Qualified Tree Risk Assessor (TRAQ)
  • Ontario Pesticide Exterminator Licence # 047219
  • Chainsaw Operators Certification
  • Ontario Stream Assessment Protocol: Certificate #16/OSHA/005
  • Class 2 Backpack Crew Leader Electrofishing: Certificate #16/UOIT/005/EF
  • Ontario Benthos Biomonitoring Network Certification
  • Aquatic Invasive Species Training

Christopher gynan, M.Sc.F., R.p.F., isa certified arborist

Vice President, Operations

Chris is a Registered Professional Forester with over 18 years’ experience as a forest manager and forestry consultant to woodlot owners, industry, government, and First Nations. His academic qualifications include an undergraduate degree in Forestry (B.Sc.F); and Master of Science in Forestry (M.Sc.F) (University of Toronto). Chris is often seen as a presenter at local conferences and workshop related to forestry. Chris is a member of the Ontario Professional Forester Association, and the International Society of Arboriculture. Chris’ certifications and licences include:

  • Registered Professional Forester #1797
  • MFTIP Plan Approver #227
  • ISA Certified Arborist ON-0614A
  • ISA Qualified Tree Risk Assessor (TRAQ)
  • Butternut Health Assessor #086
  • Certified Ontario Tree Marker, level 2 certification #TM-00233-L1
  • Registered user of Quantified Tree Risk Assessment System #4403
  • Forestry and Landscape Pesticide Licence #70-05-53472

Helen Sereda, M.F.C., ISA Certified Arborist


Helen’s academic qualifications include a Masters of Forest Conservation (University of Toronto) and B.A. in Geography (University of Ottawa). Helen has almost ten years’ experience in the horticulture, plant management and landscaping business. She has specialized in forestry operations since achieving her Master’s degree. Helen routinely provides technical support for invasive species research projects, data collection and analysis, and tree inventories.  Helen's certifications include:

  • ISA Certified Arborist ON-1825A

  • ISA Qualified Tree Risk Assessor (TRAQ)

  • Registered user of Quantified Tree Risk Assessment System #4402