Innovative solutions for natural resources management and conservation projects


CEC Recent Events

  • CEC attended the Natural Areas Conference in beautiful Bloomington, Indiana in October 2018. Interesting topics included incorporating climate change vulnerability assessments into planning, restoration ecology, improving habitat for pollinators, and a field trip on improving forests for rare species of bats and birds.


Collective Ecological Consulting LLC (CEC) is a small, woman-owned ecological consulting company based in Denver, Colorado.

CEC recently became a certified Disadavantaged Business Enterprise (DBE) with Colorado Department of Transportation.


CEC recently started an exciting new Trail Condition Assessment project for Lake Pueblo State Park. CEC will assess the condition of trails for safety purposes and proximity to important biological and cultural resources, in order to improve and maintain the wonderful trail system the Park currently offers.

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CEC was selected with a team of other Colorado biologists for the US Forest Service Region 2 IDIQ wildlife surveys contract. Region II consists of 11 national forests in Colorado, Wyoming, South Dakota, Kansas, and Nebraska.


Check out our other past and ongoing projects!


Get in touch with us!

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

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Our Services

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

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Meet the Owner

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


 Uncompahgre River in Ridgway State Park

Uncompahgre River in Ridgway State Park