Consultants in natural resource 
management and conservation 

Collective Ecological Consulting LLC  is a small, woman-owned ecological consulting company based in Denver, Colorado that specializes in environmental compliance and permitting, plant and wildlife conservation and management, mapping, and natural resources planning. 

CEC is a registered DBE with CDOT 
A M/WBE, EBE, and SBE with the City and County of Denver
  • Wildlife Surveys

  • Botanical Surveys

  • Environmental Compliance

  • Long-term Resource Conservation and Management Plans

  • Conservation Easement Baseline Reports

  • GIS Cartography and Mapping

Where we are working this summer:

  • Elkhead Reservoir State Park

  • Yampa River State Park

  • Golden Gate Canyon State Park

  • John Martin Reservoir State Park

  • Coal Creek Canyon Study Area


Jefferson County Open Space 

​CEC was selected for a second year as a recipient of a small grant to conduct a migratory and breeding bird survey,  at Coal Creek Canyon Study Area in Jefferson County. 

News and Events

Conferences and Training

CEC will announce any trainings or conferences we will attend soon!

Helpful Links

Get in Touch With Us

We are looking forward to hearing from you about your ideas and needs. Get in touch with us today.


CEC is capable of providing a range of environmental and ecological services. Compliance, GIS mapping and data analysis, wildlife and plant surveys, and Conservation Easement baseline studies are just a few services we provide to our clients.

Meet the Owner

CEC was established in 2016 by Melissa Greulich, an ecologist with a decade of wildlife, vegetation, wetland, and ecology experience.

“All ethics so far evolved rest upon a single premise: that the individual is a member of a community of interdependent parts.The land ethic simply enlarges the boundaries of the community to include soils, waters, plants and animals, or collectively the land.” 

Aldo Leopold, A Sand County Almanac.

©2019 by Collective Ecological Consulting, LLC.