counted. The table below shows the data that were collected for one stratum. Transect length (km) Width of counting strip (km) 0.3 Counting strip area (krm) # of elephants spotted in counting strips Elephant density in countinE strip (#/km) Transect A 9.1 2.7 1. 0.37 22.5 0.3 6.8 0.59 27.2 0.3 8.2 0.86 7. D. 22.8 0.3 32 0.3 9.6 F 21.4 0.3 6.4 29.6 0.3 8.9 4 0.45 20.2 0.3 6.1 0.83 22 0.3 6.6 9.2 0.3 2.8 K 4.6 0.3 Average Elephant Density for Stratum (round to nearest hundredth) alculate the missing values in the data table. Here are a few formulas to help you out .. Area = length x width Population Density = # of animals/area %3D

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K
S 28 OIINTL N
hp
hhm Bielnterastive
The Great Elephont Census
ctive
esc
8. Apply what you learned from the film:
Sclentists at Work
Student Vwerksheet
The Great Elephant Census involved over 100
scientists working in many countries Within
each country, they divided survey areas into
regions, called strata, of varying shapes and
sizes. Teams then flew along transect lines to
estimate the number of elephants in each
stratum. The lines in the diagram to the left
represent the transects that a plane follows
RAOHT A
during an aerial survey of each stratum. The
counting strips are 150-m-wide areas on either
side of each transect where elephants are
counted. The table below shows the data that
were collected for one stratum.
START
Width of
counting strip
(krm)
# of elephants
spotted in counting
Counting
Elephant density
in counting strip
(#/km)
0.37
Transect
Transect
length (km)
strip area
A
(krn?)
strips
9.1
0.3
2.7
B
22.5
0.3
6.8
4
0.59
27.2
0.3
0.3
8.2
0.86
achine
7
22.8
0.3
E
32
0.3
9.6
F
21.4
0.3
6.4
ple
me Os
re
U.3
0.3
29.6
8.9
0.45
20.2
0.3
6.1
0.83
22
0.3
6.6
9.2
0.3
2.8
K
4.6
0.3
4
Average Elephant Density for Stratum (round to nearest hundredth)
Calculate the missing values in the data table. Here are a few formulas to help you out ..
a.
Area = length x width
Population Density = # of animals/area
Average = sum of all of the densities/# of transects
The total stratum area is 803.7 km2. Using the mean elephant density for the stratum that you
calculated, calculate an estimated # of elephants that could be found in this stratum.
b.
What might explain the wide range of elephant densities among the different transects of the stratum?
Give two reasons, one that relates to elephant behavior and one that relates to the survey design.
C.
Revised September 2017
Flephants Collection
ww.Biolnteractive.org
Page 2 of 2
Transcribed Image Text:K S 28 OIINTL N hp hhm Bielnterastive The Great Elephont Census ctive esc 8. Apply what you learned from the film: Sclentists at Work Student Vwerksheet The Great Elephant Census involved over 100 scientists working in many countries Within each country, they divided survey areas into regions, called strata, of varying shapes and sizes. Teams then flew along transect lines to estimate the number of elephants in each stratum. The lines in the diagram to the left represent the transects that a plane follows RAOHT A during an aerial survey of each stratum. The counting strips are 150-m-wide areas on either side of each transect where elephants are counted. The table below shows the data that were collected for one stratum. START Width of counting strip (krm) # of elephants spotted in counting Counting Elephant density in counting strip (#/km) 0.37 Transect Transect length (km) strip area A (krn?) strips 9.1 0.3 2.7 B 22.5 0.3 6.8 4 0.59 27.2 0.3 0.3 8.2 0.86 achine 7 22.8 0.3 E 32 0.3 9.6 F 21.4 0.3 6.4 ple me Os re U.3 0.3 29.6 8.9 0.45 20.2 0.3 6.1 0.83 22 0.3 6.6 9.2 0.3 2.8 K 4.6 0.3 4 Average Elephant Density for Stratum (round to nearest hundredth) Calculate the missing values in the data table. Here are a few formulas to help you out .. a. Area = length x width Population Density = # of animals/area Average = sum of all of the densities/# of transects The total stratum area is 803.7 km2. Using the mean elephant density for the stratum that you calculated, calculate an estimated # of elephants that could be found in this stratum. b. What might explain the wide range of elephant densities among the different transects of the stratum? Give two reasons, one that relates to elephant behavior and one that relates to the survey design. C. Revised September 2017 Flephants Collection ww.Biolnteractive.org Page 2 of 2
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