MARION — Join the Marion Natural History Museum on March 31 from 7 to 8 p.m. for a presentation by David Orwig, Senior Ecologist and Forest Ecologist with Harvard Forest.

Orwig will share his research into the presence of old-growth forests in Massachusetts. The talk will include a broad discussion of old-growth forests in Massachusetts — what they are, where they are, and what they can tell us. 

Through pictures and data from many old-growth forests in the state, Orwig will describe the many aspects of why these rare forest gems are so special and the many threats they face.

Partial funding for this program has been provided by the Marion Cultural Council.

Suggested donation to the museum is $10 per person. To register visit www.marionmuseum.org.