“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.

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: 

  • ​Eldorado Canyon State Park

  • Lone Mesa State Park

  • Steamboat Lake State Park

  • Pearl Lake State Park

Jefferson County Open Space 

​CEC was selected as a recipient of a small grant to conduct a migratory and breeding bird survey, including nocturnal and crepuscular species, at South Table Mountain in Jefferson County. The work will commence spring 2019.

News and Events

Conferences and Training

​CEC attended the Partners in the Outdoors Conference in Breckenridge, Colorado in April to meet with the many conservation and management organizations in Colorado. 

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.