|
you are here: home
> activities > monitoring
(1) > monitoring (2) > monitoring
(3) |
|
|
|
|
|
|
|
|
|
We have found
a variety of bugs and other creatures in the stream. Most,
such as the worms, midges, and most true flies in the ice
cube tray above, are quite tolerant of impairment. Others,
such as the ones to the right -- a damselfly (also visible
above) and a crayfish -- are somewhat less tolerant. The
salamander below, while not a benthic macroinvertebrate,
is also a positive sign of stream health. We have found
salamanders (as well as fish, which so far have proven camera
shy) in the Kirby to Pimmit, Longfellow, and Burke's Spring
to Hutchison reaches. So far, the habitat conditions at
all the sites we have monitored have scored in the "unacceptable"
range on the Virginia Save Our Streams multimetric index
-- a disappointing result, but typical of streams in the
eastern part of Fairfax County, which have been severely
stressed over the past fifty years by the accumulation of
impervious surface and the loss of buffering woodlands.
We have posted detailed results from our fall
'03 monitoring; additional results are available from
the Fairfax
County Stream Monitoring page. |
|
|
|
|
|
|
|
|
|
|
|