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Nutrient Cycles

Nutrient Cycles. Biochemical cycles. Also called the Nutrient Cycles . Four most abundant elements in our body: CHON (carbon, hydrogen, oxygen, nitrogen). Water Cycle. Transpiration = water leaves the leaves of a plant Transpiration Animation. Runoff.

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Nutrient Cycles

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  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. Water Cycle

  7. Desalination Plant in Saudi Arabiadesalination

  8. Do Water Cycle Activity And crossword on the back X 4

  9. 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

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

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

  12. Algal Bloom • Increase in algae often due to runoff of heavily fertilized fields

  13. Algal Bloom Animation • Australian algal bloom

  14. Carbon Cycle

  15. Image: fig.cox.miami.edu

  16. Carbon Cycle • CarbonCycle Animation • Tutorial 58.2 The Global Carbon Cycle Animation The Carbon Cycle Game This would make a nice simulation!

  17. 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

  18. Greenhouse Effect UV Rays IR rays

  19. Global Warming • global-warming-101 Fossil Fuels Burning Polar Ice Caps Melting Video

  20. 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?

  21. Formulas • Calcium Carbonate CaCO3 (rock) • Carbon Dioxide CO2 (gas)

  22. How does carbon dioxide get into the ground? • Decomposition of dead animals

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

  24. Nitrogen CycleC9H11NO3= an amino acid (protein) • Why do we need nitrogen? • For DNA, RNA, Proteins

  25. Nitrogen • N2 atmospheric nitrogen • NH3 ammonia NH4+ ammonium ion Nitrate NO3 Nitrite NO2

  26. 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.

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

  28. Nitrogen Fixing Bacteria

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

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

  31. Nitrogen Cycle NONUSABLE usable

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

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

  34. Nitrogen cycle • Fixation of atmospheric nitrogen, N2 • - electrical discharge, chemical production, biological fixation • NO3 plants animals death & wastes • Waste org. N decomposers NH3 • NH3 nitrifiers NO2 & NO3 • NO2 & NO3 denitrifiers N2 • Nitrogen and the Vole

  35. Animation • Tutorial 58.4 The Global Nitrogen Cycle

  36. 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?

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

  38. Phosphorus Cycle Animation • phosphorous cycle animation • PO4 = • phosphate

  39. Spartina (cordgrass) and Algae Thrive on lots of Phosphorus

  40. Too many nutrients-too much algal growth

  41. 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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