Environmental Engineering Reference
In-Depth Information
(continued)
E
F
G
H
I
Total
H
0
¼
-
H
0
¼
-
H
0
: Comm 1: __________
Shannon-Wiener index
¼
Comm 2: __________
e
H
0
: Comm 1: __________
Effective number of species
¼
Comm 2: __________
4. Compare the interpretation of the Simpson's and Shannon-Wiener diversity
indices. (A) Which seems to be more effective at distinguishing between
the two communities and why? (B) If you were trying to communicate your
results to a lay audience, which statistic is easier to interpret and why?
5. Inspect the effective number of species derived from the Simpson's and
Shannon-Wiener indices for the two communities. (A) Do the results from the
two communities make sense to you? Why or why not? (B) Is there a difference
between the Simpson's and Shannon Wiener effective number of species? Why
do you think this is?
6. Calculate Pielou's evenness from the Shannon-Wiener index. (Recall
that
H
0
/ln(S) where S is the species richness.
J
¼
Pielou's J: Comm 1: __________
Comm 2: _________
7. Do the evenness statistics make sense given the initial data? Why or why not?
Exercise 3. Calculating an FQAI
Using either data that you collected yourself, or the data provided below, calculate
the floristic quality index and mean C of C for the site. If using the provided data set,
refer to the University of Wisconsin - Stevens Point herbarium
http://wisplants.
uwsp.edu/namesearch.html
for the coefficient of conservatism (the wetland site is
located in Wisconsin). After entering the species name, select the “more informa-
tion” link for the species C of C.
Provided data set:
Species
Mean abundance (percent-cover)
Agrostis gigantea
15
Carex atherodes
42
Carex lacustris
13
Carex utriculata
8
Eupatorium perfoliatum
21
Phalaris arundinacea
52
Typha latifolia
10
