Monday, July 02, 2007

Bioblitz at UMBS


I'm heading N on Wednesday to participate in the UM Biological Station's "bioblitz." No, it's not a bunch of blitzed biologists, but an endeavor to inventory the flora and fauna of the station over a couple of days. Generally, they are helpful in garnering interest in biodiversity of a given place, and it gets people all excited about looking for species. Specifically, they are useful some groups, but can only tell you so much, since these things take place only over a short period. A place like the UMBS has been sampled repeatedly for years for some organisms, and probably very rarely for others. However, in my search of our cataloged Odonata, I discovered that while there are records of 62 species from the vicinity of Douglas Lake, some species that should be more commonly represented in the database, are in fact, single specimens. I'm expecting that we will add some more numbers to the data, and possibly some additional species.

Douglas Lake isn't without some biotic changes. In recent years, several people have reported an alarming number of larval Odonata with zebra mussels situated on the backs of species such as Hagenius brevistylus and Didymops transversa. How that will influence what we will find may be a factor that I had not counted on. See my previous post on this topic.

The last published list of Odonata from UMBS was done a very long time ago by Arthur T. Evans in 1916. Abigail O'Brien published a short list in 1910. It ought to be interesting to see what comparisons can be made 91 years later.

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