LIME HOLLOW WETLANDS CHARACTERIZATION
The student will develop an understanding of the rationale and practices used in the identification, classification, delineation and functional assessment of freshwater wetlands, including the recognition of wetland hydrology, soils and vegetation. Familiarization with wetland delineation manuals, sources of information (including NWI maps, GIS databases, professional agencies, government offices and regulatory contacts), and the practical use of in-field observation techniques, is expected. Presentation of this “class” database and results will be part of a poster produced for Scholar’s Day festivities in March 2004. The laboratory experience will consist of a group project involving the identification, classification, delineation and GIS mapping of the wetlands within a project area at the Lime Hollow Nature Center. Students will use the current NYS delineation manual, GPS point identification, and the NYS wetland delineation procedure.
LABORATORY/FIELD SCHEDULE
Methods: We will use the typical methods employed by a wetland scientist in determining the wetland boundaries and types of wetlands in our assignment. We will determine the characteristics of the vegetation, soils, and hydrology of each site, and incorporate that information into a database as part of the ongoing GIS work at Lime Hollow Nature Center.
As a group during the first few weeks,
we will:
a) Tour the major wetland areas of Lime
Hollow Nature Center.
b) Begin to identify typical wetland vegetation
for the sites
c) Be assigned one particular site for
a detailed wetland analysis.
Field work and data collection:
The class will be divided into four groups
for field work and data collection.
Group 1:
Group 2;
Group 3:
Group 4;
Each of the groups will be assigned specific wetland sites, on week 3, and that group will work on its specific wetland for the next 6 to 7 weeks of laboratory until late October, early November.
A. The tasks of the student field groups
are as follows:
· Establish a notebook for field
notes for your group. This field book will be archived for future
use in continuing work on this project.
· Do a detailed vegetation survey
at each wetland using a transect, including herbs, shrubs and trees.
· Describe the vegetation at each
point and collect samples of items not identified in the field.
· Describe the soils at each site
and whether they are listed as hydric soils or show hydric soil characteristics.
· Describe the hydrology or hydrologic
conditions at each site and install a well to determine the hydroperiod
of the wetland.
· Take digital photos of each site
and the area around it to establish a visual record, and for later hot-linking
into the GIS database.
· Classify the type of wetland
found at the site using the Cowardin et al. (1979) system, and validate
this using any NWI map available.
In-Lab Mapping Work:
After field work is completed (sometime
in November), groups will create an interactive PowerPoint presentation
describing each site, linking it to photos taken at each site, and defending
your classifications and boundaries at each point. This will result
in a presentation in class during the last week of lab, and a poster presentation
to be placed in the hallway or student room, and as a poster for Scholar's
Day.
GIS Work and Computer Mapping:
Create a site map using downloaded USGS
7.5' topographic quad maps, downloadable NWI maps, and your designated
GPS points to compare NWI boundaries with your boundaries.
Time Frame:
- Field work: Field data collection and
archiving of field books (as per the tasks in I.A. above) should be completed
by early November. We will be going to the sites each Thursday in
September, October and November with the van during lab periods, but each
group is encouraged to take whatever additional time may be needed at the
site to complete the collection. You may work on your own, on weekends,
and take your own cars to the site after checking in at Lime Hollow Nature
Center. Due care, proper clothing and equipment is essential in the
field, including a map and a compass, should you get lost!! Mapping
Work: This will be completed during the period of early-November to the
end of the course.
Evaluation:
I am more interested in a good product
that in specific grades, but will be assigning each student two grades,
one for field work, and one for lab and mapping work, and cooperation.
Students will evaluate themselves regarding their own contributions to
the overall project, on the day of the presentation, and by allocating
a specific amount of “capital” to each student within their specific groups.
This project is worth 30% of the course grade and will ultimately result
in a poster presentation at Scholar’s Day.