You can limit the mapping the data mapped
to one or more databases as in this example below, I have limited it to
You can then set the center of the map,
the scale, what color the points are and other features.
Then when you are ready to map you can
display all the points by putting the database name in the mapping box
in the first line
In this case
In subsequent lines you can add whatever
species you want to map...
You can do this with large collaborative
databases like ours, Kansas, American Museum or with your own.
To do your own all you need to do is
submit a text file to Discoverlife. You retain control of the data
and nobody can download your database, Discoverlife only maps from your
data. You update your data as frequently as you like. So you
can submit data for an individual park such as Shenandoah National Park
or an entire country...like Pakistan, Turkey, Algeria, or Ghana (you guys
know who you are). The key is data with good locality information
and careful determinations of the species.
Here are some illustrations from our
bee database showing individual species.
Yellow points in each picture are our
collection points for the Mid-Atlantic Area (many thanks to the wonderful
people in Virginia, West Virginia, and Delaware who have added their collections
to the system.
Blue Points are points with Megachile
brevis - a relatively common bee but one that likes both dry (sand
and rock) disturbed sites (e.g., Washington D.C.) a bit more than others...
Next is a picture showing the records
for Lasioglossum marinum....a species found only on sand dunes
Now a species, Agapostemon splendens,
that likes sandy areas but isn't restricted to dunes...note the sand
barrens along the Patuxent, the central Eastern Shore Sand ridge and the
dune systems and the probably bad record in WV....but maybe not?
Now how about a marsh specialist? Here
is Lasioglossum creberrimum lounging around in the marshes o f the
Chesapeake Bay and backsides of the Assateague Island....its interesting
to see that there are no records for Delaware.
We are moving ever so closely to a better
understanding of bee status and modern distributions....but what of all
those blank spots on the maps?
Sam Droege sdroege@...
w 301-497-5840 h 301-390-7759 fax 301-497-5624
USGS Patuxent Wildlife Research Center
BARC-EAST, BLDG 308, RM 124 10300 Balt. Ave., Beltsville, MD 20705 Http://www.pwrc.usgs.gov
Nature makes the locust with an appetite
for crops; man
would have made him with an appetite for sand- I mean
a man with the least little bit of common sense.
- Mark Twain
Bees are not optional.
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