Pg. 82 RTW: Break apart the word “biogeochemical”. What definition can you

make for biogeochemical cycle?

Objective: I will be able to diagram and explain the biogeochemical cycles of an ecosystem.Agenda: •Read pg. 6-23 to 6-28•Draw the different cycles (on pg. 83)Homework:•Study for quiz on Friday

Monday, December 8th, 2014

Pg. 82 RTW: What element is fundamental to all life?

Objective: I will be able to diagram and explain the biogeochemical cycles of an ecosystem.Agenda: •Carbon Cycle GameHomework:•None

Tuesday, December 9th, 2014

Pg. 82 RTW: How is carbon released into the atmosphere?

Objective: I will be able to diagram and explain the biogeochemical cycles of an ecosystem.Agenda: •Biogeochemical cycle notes (pg. 85)•STAR pg. Homework:•Study for quiz on Friday

Wednesday, December 10th, 2014

Biogeochemical Cycles• The continuous flow of elements &

compounds between organisms & the earth

• Nutrients- inorganic substances that organisms require to live

• Organic substances break down through decomposition leaving behind inorganic substances eventually brought to surface by upwelling.

Carbon Cycle (CO2 is a greenhouse gas)

• Fundamental element (carbon is in all living things)• Carbon forms the basis for chemical energy and for

building tissues.• Carbon dioxide gas dissolves into the ocean (a CO2

storage tank)• Decomposition of organisms releases it • Calcium carbonate• Much is concentrated in the deep sea• Major contributor to global warming• On your own: List how CO2 is released into the

atmosphere

Nitrogen Cycle

• Required by organisms for proteins ,chlorophyll, and nucleic acids.

• Must be converted to a usable form by bacteria • AmmoniaNitratesNitritesNitrogen gas

Phosphorus Cycle

• Used in the ATP/ADP cycle (Energy)• Part of DNA • Makes up bones & teeth when combined with

calcium carbonate• Fertilizer

Silicon in the Marine Environment

• Silicon exists as silicon dioxide aka silica.

• Used by diatoms and radiolarians (types of plankton) to build shells and skeletons.

• Most sand is silica due to is abundance in rocks and resistance to being broken down completely.

S.T.A.R (Answer on pg. 83)

1. How is carbon released into the atmosphere?

2. Which gas needs to be converted by bacteria before we can use it?

3. How do organisms use nitrogen?

4. Why is phosphorous essential to life?

5. Why is Silicon is important to some marine organisms?

Pg. 82 RTW: Which gas needs to converted before humans can use it?

Objective: I will be able to identify toxic substances that accumulate in aquatic systems, such as ammonia, nitrates, etc.Agenda: • Revisit eutrophication (Notes pg. 85/87)

Homework:•Study for quiz on tomorrow

Thursday, December 11th, 2014

Chesapeake Bay

The Chesapeake Bay Watershed

Largest estuary in the United States

•Fishing Industry of:

•No other American estuary has a higher yield

Blue Crab Oysters Striped Bass Clams

The Bay Is Not Healthy

Nutrient Pollution Causes Algal Blooms and Fish Kills

Nutrients, Algae and Fish Kills

Fish kill caused by nutrient build-up, Nanticoke River,

Chesapeake Bay, 1992

What causes the excess nutrients?Rivers and tributaries are bringing the nutrients to the Chesapeake Bay:•Sewage•Farming

Factory farms discharge 650 million lbs of

chicken manure each

year

Pg. 82 RTW: What is the downward movement of water through soils called?

Objective: I will be able to diagram and explain the biogeochemical cycles of an ecosystem.Agenda: •Quiz- biogeochemical cycles•Review QuizzesHomework:•None

Friday, December 12th, 2014