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Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 1
SGI Ecology Unit
Transparencies and
Student Sheets
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 2
The Purple-spotted Flatfish Fishery
The Current State of the Bayside Purple-spotted Flatfish Fishery
The country of Bayside is on the coast of the Atlantic Ocean. It has a total
coastline of 5,150 km (3,200 miles). This is about the length of the coastline of the
state of Maine or North Carolina on the eastern coast of the United States.
Bayside’s total fishing area covers 800,000 km2 (497, 097 miles2) adjacent to the
coast, as shown in the map below.
Bayside’s waters are home to several species of oceanic fish, including Purple-
spotted Flatfish, Green Flying Fish, and Blue-striped Fishlings. The top predators
in the marine ecosystem are Big Gray Sharks and Pink-spotted Seals. The trophic
relationships among these organisms are shown in the food web below.
Ecology Student Sheet 1.1a
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 3
In the 1970s, the population along Bayside’s coast grew. Economic prosperity in
the 1970s and 80s led to an increase in jobs and public resources, including
schools and health care. People flocked to the coast to work in the fishery.
In the 1980s, Bayside’s economy continued to thrive as the fishery caught,
processed, and sold Purple-spotted Flatfish. Improvements in fishing technology,
such as faster boats and more accurate radar, allowed fishers to bring in big
catches.
While this growth meant increased economic resources for some families, new
housing developments built along the coastline affected the coastal waters.
Building increased the erosion and runoff of contaminants into coastal waters,
which had a negative effect on the nesting grounds of the Purple-spotted
Flatfish.
The Purple-spotted Flatfish Fishery is Closed
A dramatic drop in Purple-spotted Flatfish population numbers, as shown in the
graph below, prompted Bayside to close the Flatfish fishery in 2000 in an attempt
to save the declining Flatfish population.
In its place, local fishers have begun catching the Green Flying Fish to sell for
profit. There is less demand for this fish, and as a result it is sold at a lower price.
Bayside is facing a big challenge. With the closing of the Flatfish fishery,
residents are concerned that the economy may suffer. Bayside has an
opportunity to make a decision that will affect the sustainability of its coastal
communities. Ecology Student Sheet 1.1b
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 4
Name ___________________________________________________ Date _________
Writing Frame: Recommended Action for the Fishery
There is a lot of discussion about the issue of________________________________
________________________________________________________________________
My decision is that _______________________________________________________
My decision is based on the following evidence:
First,___________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Second,_________________________________________________________________
________________________________________________________________________
________________________________________________________________________
People who disagree with my decision may say that _________________________
________________________________________________________________________
________________________________________________________________________
Ecology Student Sheet 1.2
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 5
Name ___________________________________________________ Date _________
Class Duckweed Population Data
Duckweed Population Size
Week Group
1
Group
2
Group
3
Group
4
Group
5
Group
6
Group
7
Group
8
Total
Populatio
n
0
1
2
3
4
5
6
7
8
Ecology Student Sheet 2.1 ©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 6
Linear Growth Curve
Ecology Transparency 4.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 7
Exponential Growth: J-Curve
Ecology Transparency 4.2
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 8
Carrying Capacity: S-Curve
Ecology Transparency 4.3
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 9
Population Crash
Ecology Transparency 4.4
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 10
Name ___________________________________________________ Date _________
The Pink-spotted Seal Population
The data below show the population of the Pink-spotted Seal over time. Note that the Pink-spotted Seal is a predator of the Purple-spotted Flatfish.
Population data for the Pink-spotted Seal
Year Initial
Population
# of
Births
# of
Deaths
Final
Population
1980 345 41 14 388
1985 388 52 15 425
1990 425 30 25 430
1995 430 22 52 400
2000 400 24 104 320
2005 320 17 218 120
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 11
Organisms in an Freshwater Ecosystem
phytoplankton
turtle
insect
fish
mushroom
trout
bird
frog
plant
SGI Ecology Transparency 6.1 ©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 12
Food Web for a Freshwater Ecosystem
SGI Ecology Transparency 6.2 ©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 13
Kelp Forest Energy Pyramid
SGI Ecology Student Sheet 6.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 14
Carbon Cycle Model Key
White Chip 10,000,000 Giga tons of carbon Purple Chip 1,000,000 Giga tons of carbon Blue Chip 100,000 Giga tons of carbon Green chip 10,000 Giga tons of carbon Orange chip 1,000 Giga tons of carbon Red chip 100 Giga tons of carbon Yellow chip 10 Giga tons of carbon Black chip 1 Giga ton of carbon
Ecology Transparency 7.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 15
Moving through the Carbon Cycle
Amount of Carbon in Reservoir
Reservoir Start
(Gt of Carbon)
Round
1
(Gt of Carbon)
Round
2
(Gt of Carbon)
Round
3
(Gt of Carbon)
Atmosphere
750
Water
(oceans, lakes, rivers)
39,000
Rocks and soil
80 million
Organisms
(plants, animals, humans)
2,000
Fossil Fuels
4,000
Total carbon
in the system
80,045,750
Ecology Transparency 7.2
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 16
Name ___________________________________________________ Date _________
The Carbon Cycle
Ecology Student Sheet 7.1 ©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 17
Name ___________________________________________________ Date _________
Photosynthesis and Cellular Respiration Diagram
Living on Earth Student Sheet 8.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 18
Kelp Forest Food Web
Living on Earth Transparency 8.1 ©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 19
Name ___________________________________________________ Date _________
Double Entry Journal: Photosynthesis
Main Ideas:
What is happening? (complete once per
paragraph)
My Thoughts:
What does this remind me of or make
me wonder? (complete after reading)
Living on Earth Student Sheet 10.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 20
KWL: Photosynthesis
What do I Know? What do I Want to know? What have I Learned?
Living on Earth Transparency 10.1 ©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 21
Transmission Electron Microscope Image
Living on Earth: Ecology Transparency 11.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 22
Name ___________________________________________________ Date _________
Double Entry Journal: Cellular Respiration
Main Ideas:
What is happening? (complete once per
paragraph)
My Thoughts:
What does this remind me of or make
me wonder? (complete after reading)
Living on Earth Student Sheet 12.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 23
Name ___________________________________________________ Date _________
Cod-dominated Ecosystem Graph
Ecology: Living on Earth, Student Sheet 16.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 24
Name ___________________________________________________ Date _________
Tiger Shark-dominated Ecosystem graph
Ecology: Living on Earth, Student Sheet 16.2
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 25
Name ___________________________________________________ Date _________
Orca-dominated Ecosystem graph
Ecology: Living on Earth, Student Sheet 16.3
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 26
Pacific Halibut Population
Ecology: Living on Earth Transparency 16.1
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 27
Pacific Halibut Food Web
Ecology: Living on Earth Transparency 16.2
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 28
Pacific Halibut Dominated Ecosystem graph
Ecology: Living on Earth Transparency 16.3
©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 29
Name _______________________________________________ Date _________
Tracking Indicators
Strategy: (circle one) Marine Reserve / Open-net pen Aquaculture
Indicator Predicted Outcome Actual Outcome
Fish Protein
Consumption
Percentage
Change in
Bayside’s
Costal
Population
The Purple-
spotted
Flatfish
Population
Ecology Student Sheet 19.1a ©2008 The Regents of the University of California
Science in Global Issues (SGI) ECOLOGY: Living on Earth p. 30
Name _______________________________________________ Date _________
Tracking Indicators
Strategy: (circle one) Marine Reserve / Open-net pen Aquaculture
Indicator Predicted Outcome Actual Outcome
Purple-
spotted
Flatfish
Critical
Habitats
Water
Transparency
Fishery
Related
Employment
Ecology Student Sheet 19.1b
©2008 The Regents of the University of California