Aspen Expands Biological Services with Two New Hires

Aspen Environmental Group is pleased to announce an expansion in our already wide-ranging Biological Services Department. Dr. Carl Demetropoulos and Mr. Sam Stewart joined Aspen earlier this year, bringing with them unique capabilities and certifications that allow Aspen to provide even more services to our clients.

IMG_1317-CarlDr. Carl Demetropolous is an Aquatic and Wildlife Scientist with 25 years of field and laboratory experience. He is a trained practitioner of the Surface Water Ambient Monitoring Program (SWAMP) and California Rapid Assessment Method (CRAM). He has expertise in analyzing sensitive terrestrial and aquatic wildlife, specializing in aquatic habitat surveys of benthic macroinvertebrates, salmonids, mountain and desert fishes, vernal pools, Essential Fish Habitat (EFH), larval recruitment, and micro/macro algae. He has conducted investigations, research, and protocol surveys for threatened/endangered (T/E) species such as; California fairy shrimp, unarmored threespine stickleback, southern steelhead, Lahontan cutthroat trout, rainbow trout, Santa Ana sucker, and many more, in varied geographic areas, including deserts and watersheds of San Bernardino, Riverside, Los Angeles, Orange, Ventura, Santa Barbara, and Kern, Counties. He has participated in a variety of projects including aquatic habitat assessment; natural resource damage assessment (NRDA); toxicology; benthic SCUBA surveys; wetland delineations; mountain/desert riparian studies; rare and endangered species habitat assessments; restoration of endangered species; and biostatistical analysis.

IMG_5866 (3)Sam Stewart is a Wildlife Biologist with 18 years of biological and environmental field work, research, and management experience in California. He has a wide range of experience in biological services, including biological constraints analyses; focused surveys for special status wildlife species; fish and aquatic macroinvertebrate sampling; complex analysis of food web relationships; aquatic toxicology; design and establishment of compensatory mitigation sites; wildlife relocation and long term monitoring; long-term population studies; and invasive species control programs. Mr. Stewart has extensive focused survey experience with fish and herpetofauna, including threatened and endangered species such as Santa Ana sucker, unarmored threespine stickleback, arroyo toad, California red-legged frog, mountain yellow-legged frog, desert tortoise, and Coachella Valley fringe-toed lizard. He currently holds a California Department of Fish and Wildlife scientific collecting permit authorizing the capture and release of wildlife species of special concern and T/E species, including arroyo toad and California red-legged frog, and is a U.S. Fish and Wildlife Service-approved arroyo toad and California red-legged frog handler. He has conducted investigations in varied geographic areas including; deserts and watersheds of San Bernardino, Riverside, Los Angeles, Orange, Ventura, Santa Barbara, Kern, and Mohave (AZ) Counties.