1a. If another source of prey were available to the whales, what changes in population size would you expect for the seals and the whales? 1b. Calculate the rate of population change for the whales and the seals for the full length of the study. 1c. Does the seal and killer whale relationship represent a sigmoid or peak phenomenon? justify answer with supporting details.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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1a. If another source of prey were available to the whales, what changes in population size would you expect for the seals and the whales?

1b. Calculate the rate of population change for the whales and the seals for the full length of the study.

1c. Does the seal and killer whale relationship represent a sigmoid or peak phenomenon? justify answer with supporting details. 

1d. Climate change (an abiotic factor) has slowly decreased habitat for the arctic seals. 

e. Predict how a reduction in habitat could change the behavior of the killer whales.

f. Explain how this scenario would affect the carrying capacities for both the whales and the seals.

210
200
190
# of seals
180
170
160
150
140
130
120
110
100
90
Year 1
seal
Year 2
Seal and Whale Populations
Whale
Year 3
Year 4
Year 5
Year 6
Year 7
Year 8
Year 9
darrying capacity
Carrying capacity for
seal
# of whales
Year 10
20
18
16
:
14
12
10
8
6
4
2
carrrying
capacity for
whale
Transcribed Image Text:210 200 190 # of seals 180 170 160 150 140 130 120 110 100 90 Year 1 seal Year 2 Seal and Whale Populations Whale Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9 darrying capacity Carrying capacity for seal # of whales Year 10 20 18 16 : 14 12 10 8 6 4 2 carrrying capacity for whale
Data table 1
Year Seal Births
1
2
3
4
5
6
7
8
9
10
Data Table 2
N/A
50
100
90
95
85
65
60
64
65
Predation
Year
1
Seal Population
100
Whale Population 5
N/A
30
45
60
85
73
60
50
55
55
2
115
7
Starvation Seal Deaths
3
155
11
N/A
5
15
17
25
21
17
14
10
10
4
168
15
N/A
35
60
77
110
94
77
64
65
65
5
6
183 192
19
17
Population
Change
N/A
7
204
12
15
40
13
15
9
12
4
1
0
8
208
10
Seal
Population
100
9
209
9
115
155
168
183
192
204
208
209
209
10
209
9
Transcribed Image Text:Data table 1 Year Seal Births 1 2 3 4 5 6 7 8 9 10 Data Table 2 N/A 50 100 90 95 85 65 60 64 65 Predation Year 1 Seal Population 100 Whale Population 5 N/A 30 45 60 85 73 60 50 55 55 2 115 7 Starvation Seal Deaths 3 155 11 N/A 5 15 17 25 21 17 14 10 10 4 168 15 N/A 35 60 77 110 94 77 64 65 65 5 6 183 192 19 17 Population Change N/A 7 204 12 15 40 13 15 9 12 4 1 0 8 208 10 Seal Population 100 9 209 9 115 155 168 183 192 204 208 209 209 10 209 9
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