[Odonata-l] Emergence timing

[John Payne]

I trapped emerging dragonflies with over-water screen traps in 30 eastern
Washington lakes over 3 years and saw a huge amount of natural variation in
emergence timing from lake to lake and year to year.  I didn't have every
lake/year combination, but many of the lakes were trapped in all 3 years,
and overall it was one of the largest such field surveys of emergence I know
about.  

John 

John Payne, Ph.D.
Staff Scientist and US Coordinator
Pacific Ocean Shelf Tracking Project (POST)
www.postcoml.org