Other threats to cause a decline in native Missouri prairies...

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Question

Aside from the introduction of non-native (exotic) species, what are (or were) other threats to cause a decline in native Missouri prairies?
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
563
92
655
Totals
Table 1 modified from Ladd, D., Churchwell, B. (1999). Ecological and floristic assessment of Missouri Prairie
Foundation lands. Retrieved 2/27/12 from 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. non­native 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
Page 2 of 3
well in a new habitat? Support your answer with
researched evidence using APA citations.
4. Aside from the introduction of non­native (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.
Page 3 of 3
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 or refute your hypothesis?
10. Justify your answer.

 

Solution ID:350831 | This paper was updated on 26-Nov-2015

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