Lee, One of my peers in graduate school has become a world/wide expert in SNOW ALGAE (previously an empty niche for scientists) many if which have tree associates. He has been featured many times on the cover of journals. A quick google will bring up Brian Duvall's work.
Gary Sent from my iPhone On Dec 27, 2009, at 3:57 PM, Lee Frelich <[email protected]> wrote: > Larry and Elisa: > > This same phenomenon happens once or twice each year in MN, and it > happens the most often near the Great Lakes. Its a type of hoar > frost, > which is condensation that collects as gradually growing crystals > over a > period of a few hours. Crystal growth is directed by the wind, and > occurs under condition of saturated humidity when but below freezing > temperatures, when water can go directly from vapor to ice (without an > intermediate of liquid water). Each crystal probably starts (or is > nucleated) by a bacterium, most likely Pseudomonas syringae, which > is an > ice nucleation positive species of bacteria. > > Lee > > Larry wrote: >> Really nice photos! Lee would be the one to solve the mystery. Larry >> >> > > -- > Eastern Native Tree Society http://www.nativetreesociety.org > Send email to [email protected] > Visit this group at http://groups.google.com/group/entstrees?hl=en > To unsubscribe send email to [email protected] -- Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected]
