Geoscience Reference
In-Depth Information
Fig. 7.6 Example of a grouped polygon of selected ranked restoration sites
7.5 Selection of Sites for Detailed Field Studies
The multiple-type polygon groups or areas that had been created through GIS
modeling were individually evaluated. Each polygon group was evaluated for
practicality and restoration potential following discussions with local professionals
with knowledge of the area. Areas were dropped from further study if they were
located in a site that had been slated for future development, or if the area was
comprised of too many small land parcels. A total of 33 ranked polygons, or sites,
were selected for more detailed investigation (Fig. 7.7 ). The property owners were
identified and sent notices requesting permission to access the site for detailed field
investigations. After 1 week, property owners were then contacted by telephone to
request their permission to enter their property. During the field investigations,
biologists from MSG and Hull recorded dominant vegetation, land use/land cover
and in-stream (if present) condition. Wetlands were delineated in accordance with
the 1987 Corps of Engineers Wetland Delineation Manual and soil types were
confirmed. Streams were also evaluated for the possibility of quantitative fish
and macroinvertebrate sampling. After the field sampling period, 21 sites were
found to be acceptable for the development of stream and/or wetland restoration/
enhancement plans. Of these, eight sites were selected for quantitative fish and
macroinvertebrate sampling.
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