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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