Marine Food Web
shark
seal
tuna
©2011 The Regents of the University of California
flying fish
striped fish
zooplankton
phytoplankton
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 06_01Trans
Agenda MedCond, 9/9
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 6.1
Fish Tank Problem
The biomass of all of the goldfish in a fish tank is
approximately 30 g. If the average weight of the goldfish in the tank is 3 g, how many goldfish are in the tank?
30g
1 fish 10 fish
3
5
3g
tank
tank
If each goldfish eats 0.025 g of fish food per day,
how much fish food would the entire fish tank need
each day?
©2011 The Regents of the University of California
10 fish
0.025 g food a day
0.25 g food a day
3
5
tank
fish tank
If 20% of the fish in the tank died, what is the
remaining biomass of the goldfish in the tank?
30g
3 0.80 5 24 g biomass of goldfish remaining
tank
How many goldfish is that?
1 fish
5 8 fish
24 g biomass 3
3g
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 6.2
©2011 The Regents of the University of California
Organisms in a Freshwater Ecosystem
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 07_09Trans7_1
Agenda MedCond, 9/9.5
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 7.1
©2011 The Regents of the University of California
Food Web for an Ecosystem
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 07_09Trans
Agenda MedCond, 9/9.5
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 7.2
Science & Global Issues/ECOLOGY
DRAFT
acid kelp
bat star
sea urchin
giant kelp
sheephead fish
harbor seal
rock fish
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 09_11Trans
Agenda MedCond 9/9
phytoplankton
zooplankton
herring
sea otter
©2011 The Regents of the University of California
cyanobacteria
(feeds on all
decaying matter)
bacteria
Kelp Forest Food Web
TRANSPARENCY 9.1
Science & Global Issues/ECOLOGY
new bleed area
coal reserves
3299 SEPUP SGI Ecology SE
Figure: 3299EcoSB 08_06
Agenda MedCond 9/9.5
soil and
detritus
plants
©2011 The Regents of the University of California
Carbon Cycle
DRAFT
TRANSPARENCY 9.2
oil reserves
fossil fuels
fires/
combustion
new
new bleed area
live area
ocean
biomass
ocean
waters
©2011 The Regents of the University of California
Population
Linear Growth Curve
0
0
Time
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 14_06Trans
Agenda MedCond 9/9.5
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 14.1
©2011 The Regents of the University of California
Population
Exponential Growth: J-Curve
0
0
Time
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 14_07Trans
Agenda MedCond 9/9.5
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 14.2
©2011 The Regents of the University of California
Population
Carrying Capacity: S-Curve
0
0
Time
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 14_08Trans
Agenda MedCond 9/9.5
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 14.3
©2011 The Regents of the University of California
Population
Population Crash
0
0
Time
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG 14_09Trans
Agenda MedCond 9/9.5
Science & Global Issues/ECOLOGY
DRAFT
TRANSPARENCY 14.4
Science & Global Issues/ECOLOGY
Population level (relative)
DRAFT
1975
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG16_16Trans
Agenda MedCond 9/9.5
1970
1980
©2011 The Regents of the University of California
1985
1990
Year
1995
2000
Pacific halibut
2005
2010
Pacific Halibut Population
TRANSPARENCY 16.1
brittle star
Science & Global Issues/ECOLOGY
DRAFT
sablefish
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG16_17Trans
Agenda MedCond 9/9
©2011 The Regents of the University of California
Pacific
halibut
Pacific Halibut Food Chain
TRANSPARENCY 16.2
Science & Global Issues/ECOLOGY
Population level (relative)
1975
3299 SEPUP SGI Ecology TG
Figure: 3299EcoTG16_18Trans
Agenda MedCond 9/9.5
DRAFT
1970
1980
©2011 The Regents of the University of California
1985
1990
Year
brittle stars
1995
sablefish
2000
Pacific halibut
2005
2010
Pacific-halibut-dominated Ecosystem Graph
TRANSPARENCY 16.3