Presentation is loading. Please wait.

Presentation is loading. Please wait.

Nutrient Cycles.

Similar presentations

Presentation on theme: "Nutrient Cycles."— 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


7 Water Cycle

8 Desalination Plant in Saudi Arabia desalination

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:

17 Carbon Cycle CarbonCycle Animation
Tutorial 58.2 The Global Carbon Cycle Animation The 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


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

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 CO2 in the ocean?


24 Formulas Calcium Carbonate CaCO3 (rock) Carbon Dioxide CO2 (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 C9H11NO3 = an amino acid (protein)
Why do we need nitrogen? For DNA, RNA, Proteins

28 Nitrogen N2 atmospheric nitrogen NH3 ammonia NH4+ ammonium ion
Nitrate NO3 Nitrite NO2


30 KNOW 1. Nitrogen Fixing: Changing unusable nitrogen into usable nitrogen
N2 NH4+ (NH3) 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


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


36 3. Nitrogen Mineralization (Decay)
Organic nitrogen is converted to plant-available inorganic forms. Microbes eat the decomposed organisms. N NH4+

37 Nitrogen Cycle NONUSABLE usable

38 4. Nitrification Ammonia into nitrite/nitrate NH4+ NO2-/N03
Done by soil bacteria

39 Bacteria converting NO3/NH3 back to N2 Usable to unusable
KNOW 5. Denitrification ☺Nitrogen Cycle Animation WATCH THE MOVING DOTS Bacteria converting NO3/NH3 back to N2 Usable to unusable

40 Nitrogen cycle • Fixation of atmospheric nitrogen, N2
- electrical discharge, chemical production, biological fixation NO plants animals death & wastes Waste org. N decomposers NH3 NH3 nitrifiers NO2 & NO3 NO2 & NO denitrifiers N2 Nitrogen and the Vole

41 Animation Tutorial 58.4 The Global Nitrogen Cycle


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 N2? 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 PO4 = phosphate


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

Download ppt "Nutrient Cycles."

Similar presentations

Ads by Google