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Movie night W 4/21 at 5pm in JES A121A
Today: What happens near the carrying capacity? What is biodiversity?
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Exam averages: #1 = 78.7 #2 = 73.5 #3 = 67.4
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Ecological Interconnections
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Fig 52.7 Carrying Capacity stationary phase exponential growth
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Availability of resources and removal of waste limits carrying capacity
Fig 54.1
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What happens as populations approach their carrying capacity?
Fig 53.13
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What happens as populations approach their carrying capacity?
Fig 53.13
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What happens as populations approach their carrying capacity?
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What happens as populations approach their carrying capacity?
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36.4 9 2.3 UN Department of Economic and Social Affairs
Population Division (2004)
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Annual % increase in global population
Fig 53.23
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How much of our society is based on continuing population increases?
36.4 9 2.3 UN Department of Economic and Social Affairs Population Division (2004)
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Unfortunately there is lots of bad news...
Fig 56.4 Unfortunately there is lots of bad news... FEWER THAN 100 REMAIN EXTINCT FEWER THAN 100 REMAIN
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Unfortunately there is lots of bad news... and it is your fault.
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Rainforest clear cutting
CB 55.15
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Dead zone in Gulf of Mexico from Mississippi River
Human impacts: Dead zone in Gulf of Mexico from Mississippi River Fig 55.18
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New species and extinction
Fig 25.14 New species and extinction
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Biodiversity- number of species within an area
Fig 56.3 Genetic Diversity Biodiversity- number of species within an area Ecosystem Diversity
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If a species loses genetic diversity, it can go extinct
Fig 56.11
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Fig 56.10 Extinction vortex
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Biodiversity- number of species within an area
Fig 56.3 Genetic Diversity Biodiversity- number of species within an area Ecosystem Diversity
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Biological Resources are not evenly distributed
Fig 55.6 Biological Resources are not evenly distributed
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Number of bird species:
Areas of higher and lower biodiversity reflect available resources
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Biodiversity “hot spots” have plentiful resources and large numbers of species
Fig 56.17
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Larger areas can support more biodiversity
Fig 54.28 Islands
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Larger areas can support more biodiversity
Fig 54.26 # bird species
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Water is critical for biodiversity
Fig 54.25
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New species can have an affect throughout the ecosystem
Fig 54.16
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Interactions include area, climate, competition...
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Movie night W 4/21 at 5pm in JES A121A
Today: What happens near the carrying capacity? What is biodiversity?
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