Welcome to the Western Cuyahoga Audubon
Society's (WCAS) Rocky River Important Bird Area 2007 Vegetation Survey.
For two years WCAS observers have been surveying birds from 60 points in
the Rocky River watershed. Now we are surveying the vegetation at these
points. The survey will help us understand the forest habitat in the
Cleveland Metroparks Rocky River, Mill Stream Run and Hinckley
Reservations and habitat’s impact on bird populations.
See the WCAS website for maps, instructions, survey sheets. Please
review the instructions ahead of time, there is a lot of information to
cover. It will become clear during the field training.
http://www.wcasohio.org/rocky_river_iba.htm
Join us for field training on July 15, 2007 at 2:00 at
the Chalet in the Mill
Stream Run Reservation between Route 42 (aka Pearl Rd) and Route 82 (aka
Royalton Rd).
We will review procedures, and distance estimation in meters, plants
including tree, shrub, and herbaceous identification. And we’ll actually
complete a point.
Additional equipment will be available including Densionmeters and
Infrared Range Finders used to estimate foliage cover and canopy height.
If your points are complete you could return your equipment at the field
training, and if your willing pick up a Densionmeter to measure canopy
cover and the Range Finder to measure canopy height.
Groups of four are ideal, feel free to invite friends to attend the
training or out in the field with you. Let us know who helps out and
we'll invite them to our IBA celebration potluck in the fall to learn
about the results of the bird and vegetation surveys.
New people are getting involved, including some plant experts. Let me
know if you can work with an additional person. We hope to have most
points done by August 15, and all points done by August 31. This is a
one-year vegetation study; it could be repeated in 5 years to monitor
the impact of the Emerald Ash Borer.
Completed survey forms will go to Diane Sigler.
Why do a Vegetation survey of
the Rocky River Important Bird Area?
Our vegetation survey will look the
habitat of each point covered by the bird observes and records. Many bird
species have very specific habitat needs.
Each of our 60 points will
have four subplots each measuring 5 meter radius. The Vegetation survey will
look at the following:
Trees and shrubs growing over
1.4 meters, or breast height will be identified (genus or species), measured and
counted.
Woody seedlings and shrubs
will be counted if they are above 1.4 meter, or ankle height. We’ll identify
only plants present in more than 20% of the circle.
The height of the highest
part of the canopy will be estimated in meters, we hope to get equipment to
measure the actual height.
Vegetation profile will be
determined with the telescoping pole pictured above. Hits will be recorded for
multiple heights from 0-.5 meters up to 4-5 meters. The largest tree in the
photo above is an Ash, our study is occurring just before the Emerald Ash Borer
comes to the Cleveland area. Many Ash will be lost, our study could be repeated
in 5 years to show the impact on birds and habitat.
Using the densionmeter
pictured below we will measure the canopy leaf cover from the center subplot.
Just imagine each square is split into four quadrants giving us almost 100
squares. How many of those 100 don’t have significant vegetation. If 10
squares don’t show vegetation, we have 90% cover.
We will estimate the slope
and the aspect, the direction of the slope.
Distance to edge, large
edges are canopy openings over 30 m wide, small edges are canopy openings
between 10 and 30 meters.
This is a big project and we
need your help, contact Terri Martincic at 440-759-8220, or email naturenut@wowway.com
to get involved.