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Nutrient Cycles. Biochemical cycles Also called the Nutrient Cycles. Four most abundant elements in our body: CHON (carbon, hydrogen, oxygen, nitrogen)

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Presentation on theme: "Nutrient Cycles. Biochemical cycles Also called the Nutrient Cycles. Four most abundant elements in our body: CHON (carbon, hydrogen, oxygen, nitrogen)"— Presentation transcript:

1 Nutrient Cycles

2 Biochemical cycles Also called the Nutrient Cycles. Four most abundant elements in our body: CHON (carbon, hydrogen, oxygen, nitrogen)

3 Water Cycle Transpiration = water leaves the leaves of a plant Transpiration Animation

4 Runoff Surface flow of water over the land

5 Seepage (percolation) or infiltration

6

7 Water Cycle

8 Desalination Plant in Saudi Arabia desalinationdesalination

9 Do Water Cycle Activity And crossword on the back X 4

10 What is the purpose of nutrients? Chemical building blocks To build tissues and carry out essential life functions. Three most important nutrients: C-N-P Carbon – nitrogen - phosphorus

11 What are the three nutrients found in fertilizer? N P K nitrogen-phosphorus-potassium

12 Algal Bloom An algal bloom or marine bloom or water bloom is a rapid increase in the population of algae in an aquatic system.

13 Algal Bloom Increase in algae often due to runoff of heavily fertilized fields

14 Algal Bloom Animation Australian algal bloom

15 Carbon Cycle

16 Image: fig.cox.miami.edu

17 Carbon Cycle CarbonCycle AnimationCarbonCycle Tutorial 58.2 The Global Carbon Cycle Animation The Carbon Cycle GameThe Carbon Cycle Game This would make a nice simulation!

18 Why do you think Carbon is an important cycle? Makes up all living things Plants use it to make food by photosynthesis Carbon dioxide acts as a greenhouse gas to warm the atmosphere

19 Greenhouse Effect UV Rays IR rays

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21 Global Warming global-warming-101 Polar Ice Caps Melting Video Fossil Fuels Burning

22 Global Warming Global warming is the increase in the average temperature of Earth's near- surface air and oceans since the mid-20th century and its projected continuation. Can we bury our CO 2 in the ocean?

23

24 Formulas Calcium Carbonate CaCO 3 (rock) Carbon Dioxide CO 2 (gas)

25 How does carbon dioxide get into the ground? Decomposition of dead animals

26 R=release TI=take in TI photosynthesis R respiration TI decomposition of dead animals R volcanic activity R burning fossil fuels R burning forests

27 Nitrogen Cycle C 9 H 11 NO 3 = an amino acid (protein) Why do we need nitrogen? For DNA, RNA, Proteins

28 Nitrogen N 2 atmospheric nitrogen NH 3 ammonia NH 4 + ammonium ion Nitrate NO 3 Nitrite NO 2

29

30 KNOW 1. Nitrogen Fixing: Changing unusable nitrogen into usable nitrogen N 2 NH4 + (NH 3 ) Atmospheric nitrogen into ammonia (unusable) (usable) ONLY DONE WITH NITROGEN FIXING BACTERIA.

31 Legume Nodules nodules of Rhizobium, bacteria that can fix atmospheric nitrogen. UGLY – BUT NEEDED!!!

32 Nitrogen Fixing Bacteria

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34 2. Uptake by Organisms Clover is a low cost source of nitrogen. Urine, fertilizer add nitrogen

35

36 3. Nitrogen Mineralization (Decay) Organic nitrogen is converted to plant-available inorganic forms. Microbes eat the decomposed organisms. N NH 4 +

37 Nitrogen Cycle NONUSABLE usable

38 4. Nitrification Ammonia into nitrite/nitrate NH 4 + NO 2 -/N0 3 Done by soil bacteria

39 KNOW 5. Denitrification ☺Nitrogen Cycle AnimationNitrogen Cycle Animation WATCH THE MOVING DOTS Bacteria converting NO 3 /NH 3 back to N 2 Usable to unusable

40 Nitrogen cycle Fixation of atmospheric nitrogen, N 2 - electrical discharge, chemical production, biological fixation NO 3 plants animals death & wastes Waste org. N decomposers NH 3 NH 3 nitrifiers NO 2 & NO 3 NO 2 & NO 3 denitrifiers N 2 Nitrogen and the Vole

41 Animation Tutorial 58.4 The Global Nitrogen Cycle

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43 Do “Traveling Nitrogen: Activity How did you (nitrogen) get into the soil? How did you move from one place to another? Did you ever get transformed back to N 2 ? How do animals get the nitrogen that they can use?

44 Phosphorus Cycle Phosphorus does not enter the atmosphere in its cycle Inorganic phosphorus remains mostly in rocks and ocean sediments Organic Phosphate is found in DNA and RNA (all living things) CHONP

45 Phosphorus Cycle Animation phosphorous cycle animation PO 4 = phosphate

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47 Spartina (cordgrass) and Algae Thrive on lots of Phosphorus

48 Too many nutrients-too much algal growth

49 Algal Bloom Too many nutrients cause too much algae to grow. Chokes out other plants. Too many nutrients cause grow of algae. This causes other plants to be choked out. Dissolved oxygen depletion


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