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Mon. Tues. Wed. Thurs. Fri.
Indoor lab – bring calculator – download Lemna lab
Week ofSept. 15
Week ofSept. 22
Wet outdoor lab – wear closed-toed shoes
Week ofSept. 29
Oct. 3Exam 1
Week ofOct. 7
Indoor lab – bring calculator
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How are the boreal and tundra areas in the Arctic different from the boreal/tundra areas in Alpine areas?
A. Seasonality
B. Daily temperature change
C. UV radiation
D. All of the above
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Aquatic systems - defined by physical
factors such as depth, temperature,
water flow
5From Miller 1993
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thermocline
Oceans and lakes are usually thermally stratified
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Aquatic systems
MarinePelagic zone (open ocean)Deep seaShallow benthosCoral reefs
FreshwaterLakesStreams/rivers
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Shallow benthos
Pelagic zone
Deep sea
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Biome : Pelagic zone of ocean
Climate: Depends on location – generallywarm and well-lit
Vegetation: Phytoplankton
Animals: Zooplankton, fish
Net Productivity: Low
Diversity: Low
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Diatoms – photosynthetic protists
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Zooplankton – common herbivores and carnivores of the ocean
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Biome : Deep sea
Climate: Extremely uniform – dark and coldVery high pressure
Vegetation: None
Animals: Unusual things
Net Productivity: Low
Diversity: Low – but higher than pelagic zone
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If no photosynthesis and no vegetation, what supports the organisms that live in the deep sea?
What do they eat if they can’t eat plants?
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Biome : Shallow benthos
Climate: Depends on area – relatively warmand well-lit
Vegetation: Kelp forests and other seaweeds
Animals: Urchins, starfish, sea cucumbers
Net Productivity: Moderate to high
Diversity: Moderate
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Kelp forests
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Biome : Coral reefs
Climate: warm and well-lit
Vegetation: Algae
Animals: Coral, tropical fish
Net Productivity: High
Diversity: High – 25% of all marine species in0.17% of ocean area
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Live Coral
Dead coral
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Aquatic systems
MarinePelagic zone (open ocean)Deep seaShallow benthosCoral reefs
FreshwaterLakesStreams/rivers
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Biome : Lakes
Climate: Highly variable
Vegetation: Phytoplankton, rooted plants on edges
Animals: Zooplankton, fish
Productivity: Low to high
Diversity: Low to moderate
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Pelagic zone
Shallow benthos
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Biome : Rivers/streams
Climate: Highly variable – less vertical variabilitythan lakes
Vegetation: Algae, rooted plants in large rivers
Animals: Insect larvae, fish
Net Productivity: Low to high
Diversity: Low to moderate
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More horizontal than vertical variability in streams
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Outline
The biome concept
Survey of the biomes
Variability in Connecticut
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Different Land Cover Types in Connecticut
- TerrestrialOak ForestRed Maple ForestHemlock Beech Forest
- FreshwaterLake and reservoirStreams and riversFreshwater wetlands and bogs
- CoastalSalt MarshBeach
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Microclimate – climatic variation on a
scale of a few kilometers, meters, or
centimeters
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Coniferous forestDeciduous forestWetlands, WaterResidential, commercialLawn and turf
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Which of the following biomes have water deficits during the growing season?
a. tundrab. desertc. woodland/shrubland (chaparral)d. both b and c
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10.Only one of the following lists correctly ranks four terrestrial biomes from most to least productive. Which is it?
a. tropical rain forest, temperate seasonal forest, savanna, tundra
b. tropical rain forest, temperate seasonal forest, tundra, savanna
c. temperate seasonal forest, tropical rain forest, tundra, savanna
d. temperate seasonal forest, tropical rain forest, savanna, tundra
e. temperate seasonal forest, savanna, tropical rain forest, tundra