COMMUNITY ECOLOGY Jennifer V. Zee Steve Lonhart / NOAA MBNMS 1.
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Transcript of COMMUNITY ECOLOGY Jennifer V. Zee Steve Lonhart / NOAA MBNMS 1.
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COMMUNITY ECOLOGY
Jennifer V. Zee
Steve Lonhart / NOAA MBNMS
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LEVELS OF ECOLOGY• Population = all the individuals of a species
that live in the same area
M/Y/D/S Animal Graphics
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LEVELS OF ECOLOGY• Population• Community = all the
organisms living in a certain area
Jennifer V. Zee
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SUCCESSION= gradual process of change in an ecological community after a disturbance
FIRE
FIRE
Kathy Sarns, Alaska FWS
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SUCCESSION
SECONDARY SUCCESSION – where there has been previous growth
= gradual process of change in an ecological community after a disturbance
FIRE
FIRE
Kathy Sarns, Alaska FWS
Sue Sweeney Jason Church / NPS
N, P, K
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SUCCESSION
PRIMARY SUCCESSION – where life has not existed before
= gradual process of change in an ecological community after a disturbance
Kay White / NPSEric Moll / NPS
Eric Moll / NPSPreston Filbert / NPS
Kay White / NPS
Ron Niebrugge / NPS
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SUCCESSION• What kinds of disturbances could cause
primary succession in the kelp forest community?
• What kinds of disturbances could cause secondary succession in the kelp forest community?
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FOOD CHAINS
LadyofHats Wikimedia
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FOOD WEB
LadyofHats Wikimedia
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SOIL FOOD WEB
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PRODUCERS= Organisms that make their food using light
energy from the sun
Photos by: Kristin McCully NOAA
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PRODUCERS
PHOTOSYNTHESIS
At09kg, Wikimedia
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PRODUCERS
Jennifer V. Zee
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CONSUMERS= Organisms that feed on other organisms• Primary = eats producers (herbivore)• Secondary = eats consumers (carnivore)
Photos by: Kristin McCully
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CONSUMERS
Jennifer V. Zee
Steve Lonhart / MBNMS
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DECOMPOSERS= Consumers that feed on dead plants and animals
Important in nutrient cycles
Photos by: Kristin McCully
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DECOMPOSERS
Jennifer V. Zee
Steve Hillebrand / FWS
Steve Lonhart / MBNMS
Steve Lonhart / MBNMS
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ACTIVITY• Label each organism as a producer, primary
consumer, secondary consumer, or decomposer.
• Create a food web with all of the organisms!
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KELP FOREST CREATURES
MBAquarium
All photos by Steve Lonhart / MBNMS unless otherwise indicated
Steve Hillebrand / FWS
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REVIEW FOOD WEB ACTIVITY
Figure 1 from: Estes, J.A., M. T. Tinker, T. M. Williams, and D. F. Doak. 1998. Killer Whale Predation on Sea Otters Linking Oceanic and Nearshore Ecosystems. Science 282:473-475. http://bio.research.ucsc.edu/people/doaklab/publications/1998estes_tinker_williams.pdf
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21D.R. Brumbaugh © AMNH-CBC
REVIEW FOOD WEB ACTIVITY
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REVIEW FOOD WEB ACTIVITYThe pesticide DDT was used to kill mosquitoes for many years.
DDT entered bodies of water, moved up the food chain, and built up in the tissues of fish. When female bald eagles ate these fish, they produced eggs with very thin shells. The eggs broke when the eagles sat on their nests. The U.S. government banned the use of DDT in 1972.
Which of these graphs most likely shows how the ban of DDT affected the bald eagle population?
AB C D
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REVIEW FOOD WEB ACTIVITY
Source: Center for Biological Diversityhttp://www.biologicaldiversity.org/species/birds/bald_eagle/report/index.html