Triplicate Staff

Local ecologist Michael van Hattem and associates will discuss their annual journey to map a glacier's blue ice and document the botanical treasures from the last vestiges of a much colder time in the Klamath Mountains during a presentation Friday night in Crescent City.

Refreshments and a social will begin at 6:30 p.m. (donations appreciated), and the free presentation, "Glacier's Last Stand: a Flora of a Trinity Alps Sky Island," starts at 7 p.m. at the Del Norte branch of College of the Redwoods.

The event is sponsored by Friends of Del Norte, which will be celebrating its 40th anniversary.

The Trinity Alps are within the Pacific Coast Ranges physiographic region, in the Klamath Mountains System, which lies between the California Coast Ranges to the west and the Cascade Range to the east.

Elevations range from 1,350 to 9,001 feet at Thompson Peak. The Trinity Alps are noted for their scenic views and alpine environment, including a temporary glacier. The range's alpine flora differs from that found in the Sierra Nevada or the Cascades.

Michael van Hattem is an ecologist with the California Department of Fish and Wildlife and works out of the Eureka Field Office.

He works on various conservation-related issues in Humboldt, Del Norte and western Trinity counties.

His formal training is in wildlife biology and he has an BS in wildlife and minor in fisheries biology from Humboldt State University.He also earned a MS in Environmental Studies from San Jose State University, where he focused on environmental law and impact assessment.

Van Hattem has many interests, including herpetology, wetland science, invasive species ecology, and the study of plants and animals in high elevation ecosystems.