Based on the table above, what percentage of grassland species are exotic
Lesson 8 Laboratory: Biodiversity
Complete the questions below. When
you are asked to include a citation make sure to also include the appropriate
reference in the reference page.
TABLE 1
Type
# native
# exotic
total
Tree
42
7
49
Shrub
24
3
27
Woody vine
12
1
13
Herbaceous vine
5
0
5
Perennial forb
260
18
278
Biennial forb
14
12
26
Annual forb
94
27
121
Perennial grass
49
9
58
Annual grass
13
15
28
Perennial sedge
39
0
39
Annual sedge
5
0
5
fern
6
0
6
Totals
563
92
655
Table 1 modified from Ladd, D., Churchwell, B.
(1999). Ecological and floristic assessment of Missouri
Prairie Foundation lands. Retrieved 2/27/12 from .moprairie.org/index_000.html”>http://www.moprairie.org/index_000.html.
TYPE THE ANSWER HERE
1.
Based on the table above, what percentage of grassland species are
exotic?
2.
You calculated the percentage of exotic species in protected Missouri
grasslands in question 1. After
reading “Exotic Species,” would you say this number is acceptable? Why or why not? Support your answer with
researched evidence using APA citations.
3.
One factor that leads to a decline in biodiversity is the
introduction of exotic (a.k.a. non-native species). However, most
species that are introduced to an area do not become established. What
are some characteristics of species that might make them adapt well in a new
habitat? Support your answer with researched evidence using APA citations.
4.
Aside from the introduction of non-native (exotic) species, what are
(or were) other threats to cause a decline in native Missouri prairies?
Support your answer with researched evidence using APA citations.
5.
Biodiversity in Missouri’s protected grasslands is greater than the
biodiversity in unprotected grasslands.
In general, how are grasslands managed to maintain a higher
biodiversity than unprotected grasslands?
Support your answer with researched evidence using APA citations.
6.
What mammal was reintroduced to Dunn Ranch Prairie in northwest
Missouri? When? Why? Support your answer with researched
evidence using APA citations.
In Figure 1 (below), the changes in plant diversity are shown over time
for native and invasive plants. These
data were collected in a prairie in Illinois called Fermilab Plot 1.
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TYPE THE ANSWER HERE
7.
For Figure 1, hypothesize (make an educated statement) about why
there was an increase in native plant diversity in 2008. Support your answer with researched
evidence using APA citations.
8.
Several factors may underestimate the biodiversity actually present
in a grassland. These factors include time of year the survey is
done. Formulate a hypothesis about how
this factor might affect the accuracy of the data collected.
9.
Examine the data given to you (Tables 1a and 1b). Does the data
support orrefute your hypothesis?
10.
Justify your answer.
References
