The conversations, chatter, and posts should dictate if a new forum is needed. How many threads can be moved over to some new apitherapy forum? Has there been a need up to this point? Has people "naturally" needed or desired to talk about such things on a level warranting a new forum?
You can't create need, by making a forum. You make a forum to fill the need.
The Biology forum probably sounded like a solid plan also. But look at the interest. A dead forum with a post or two per month. And this to the casual visitor or someone looking for the first time, indicates a negative to the forum.
Here is a forum that many could take interest in one form or another "Hobbies and outdoor activities". You have the farming-tractor forum, but what about those who are into motorcycles, boating, camping, RVing, rock climbing, skiing, cave exploring, stamp collecting, slot car racing, hot air balloon riders, etc. Not all beekeepers live on farms, and I think there could be a place to discuss people's interests outside the hive, but beyond gardening, tractors, and farm life.