Creating Space in Nature in Everything We Do!

Coldstream Ecology is a Lillooet, BC based environmental research and consulting company within the region and Territory. Established by owner operator Alyson McHugh in 2012, Coldstream Ecology provides informed decisions regarding ecological and economic natural resource management. We go beyond the status quo and incorporate the ecological economics of land and water use impacts into environmental impact assessments and monitoring programs. Using community-based approaches, we include the benefits and ecosystem services we receive from nature into land use decisions. We serve local communities, First Nations, farms, large and small industries, non-profits, BC Hydro, universities and governments across North America.

Our Vision

Coldstream Ecology is an environmentally passionate company with a mission to help lead the local transition from an extractive economy to a natural economy. We believe the benefits we receive from nature are to be integrated into decisions regarding land and water use planning and policy implementation. We specialize in combining traditional ecological knowledge with western science to maximize the benefits of the work we do. Our goal is to continue our success by growing our valued team of biologists, field crew and technical staff to expand and diversify our scope of work.

Our Team 

We are growing diversified team of environmental experts, who are passionate about making a difference in the environment that you depend on. Interested in joining our team? We are always looking for people who want to make this world a better place. Please contact us!



Founder, Senior Research Ecologist at Coldstream Ecology Ltd.

 Alyson has two decades of environmental consulting and scientific research experience across North America from the high Arctic to the desert Southwest. She sees it as her mission to employ win-win strategies that enhance the environment we all depend on. She has a broad ecosystem-based background and tends to look at the world with more of a holistic worldview than traditional discipline-specific scientists. She holds a Bachelor of Science in Fisheries and Wildlife Management and a Master of Science in Sustainable Forest Management. She is a Registered Professional Biologist (RPBio) in British Columbia, Canada, an Associate Wildlife Biologist in the United States, and a Certified Permaculture Designer (CPD). 



Senior Research Biologist at Coldstream Ecology Ltd.

Melissa is a broadly trained biologist with over 15 years of experience working in academia, with government, and with First Nations/Tribes. Her expertise lies in fisheries ecology, genetics, and the application of genetic tools to fisheries research, conservation, and management projects. In recent years, Melissa has collaborated with researchers and resource managers on evaluations of restoration programs for at-risk salmonid fish populations in Oregon, Idaho, British Columbia, and in eastern Canada. Melissa joined Coldstream in July 2019 as Senior Fisheries Biologist.

Melissa is passionate about research and its communication and has authored numerous peer-reviewed articles and technical reports,; a complete list of her publications can be found here: https://www.researchgate.net/profile/Melissa_Evans3



Registered Professional Forester at Coldstream Ecology

Nick's areas of expertise include fuels and fire management, urban forestry, First Nations Specific Claims, cartography and geoprocessing, and forest engineering and timber cruising. Nick holds a MSc from the University of British Columbia. In addition to practical forest management, Nick's areas of research have included biomass energy, fire management, forest law, and fuel management.



Xwisten Fisheries Field Supervisor at Coldstream Ecology

Elijah Michel is a senior environmental field technician. He brings over two decades of fisheries and environmental monitoring expertise within the Fraser, Bridge and Seton watersheds to the team.


Ecosystem Restoration , Team Lead

Sean Bennett has been working in the fish and wildlife biology field for over 25 years, and has recently left the Federal Government of Canada Department of Fisheries and Oceans as the Senior Restoration Biologist after 21 years in that position. He has extensive river restoration, monitoring, and project management experience with a specialization in estimates, permitting, scientific monitoring, dewatering, and working within sensitive environments. He is excited to be part of the private sector and looks forward to assisting clients with Government permitting and regulation management, monitoring of projects and instream construction.



Junior Fisheries Research Biologist 

Carley Wall comes from a variety of biological disciplines including aquatic ecology, conservation and environmental physiology. Carley has spent both her academic and professional career studying fish in both field and laboratory settings. She conducted her Masters thesis at the University of Alberta focusing on the metal acquisition and handling of Pacific hagfish, which involved remote field work experience along the Vancouver Island coastline. She has also worked as a fisheries technician with the Department of Fisheries and Oceans, conducting field work related to biological sampling of Pacific salmon with the Nuxalk First Nations in Bella Coola, British Columbia. She has worked on various salmon habitat restoration projects, focusing on invasive species management and stream bank stabilization. Carley joined Coldstream Ecology in June of 2020.


Junior Research Biologist 

Brett completed his Masters at SFU and BCIT studying Ecological Restoration where his focus was on restoration and connectedness of breeding wetlands for at-risk western chorus frogs. He has worked as a wildlife biologist for five years and is experienced in the implementation of avian, bear, small mammal, reptile/amphibian, and fisheries surveys. He is also experienced in water quality and construction-related environmental monitoring. He has implemented a number of restoration projects on wetlands, streams and riparian areas, forests, and grasslands. He also has experience in invasive species management and has used a variety of methods to control them. Brett has the designation of Biologist-in-training (BIT) and is working towards becoming a Registered Professional Biologist (RPBio).


We'd love to hear from you

(250) 256-0637

(250) 256-8960

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