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Marine Ecology Part II

Marine Ecology Part II. Read pgs. 365-371 in the HRW BIOLOGY book to answer Oceanography Ecosystems worksheet. IV. FOOD CHAINS AND WEBS. (handout in binder can be done for homework) Practice problem using overhead example. count members, lengths of chains name categories.

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Marine Ecology Part II

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  1. Marine EcologyPart II Read pgs. 365-371 in the HRW BIOLOGY book to answer Oceanography Ecosystems worksheet

  2. IV. FOOD CHAINS AND WEBS • (handout in binder can be done for homework) • Practice problem using overhead example. • count members, • lengths of chains • name categories

  3. Complete this activity for homework

  4. V. TROPHIC LEVELS (handout in binder of pyramid of biomass) • Modify the pyramid with these ideas • Biomass = dry weight, measured in kilograms • Can also be a pyramid of numbers and energy measured in Cal/g or Joules/g • Identify producers, consumers, and add decomposers • Trace flow of energy and materials 10% and 90%

  5. Label the producers And consumers… 10,000 kg

  6. (handout in binder of examples of )SELF SUSTAINING MARINE ECOSYSTEMS

  7. Abyssal Plain Hydrothermal Vent

  8. Sea Surface Upwelling System Coral Reef System

  9. Calculating Productivity and energy(practice problems in binder) • Producer to Consumer is inefficient 2-10% • ?What are more efficient carnivores or herbivores???

  10. Calculating Productivity and energy(practice problems in binder) • Producer to Consumer is inefficient 2-10% • ?What are more efficient carnivores or herbivores??? CARNIVORES

  11. Production efficiency PE= 1-3% PE= 10% PE= 40%

  12. Heat Detritivores Production Efficiency= NSP/Assimilation of NPP 33/100=33% Growth efficiency 33/200 = 16.5%

  13. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + _____ g/day

  14. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + _119_ g/day

  15. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + 119 g/day respiration growth/repair

  16. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + 119 g/day respiration growth/repair 65 g/ day ____ g/day

  17. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + 119 g/day respiration growth/repair 65 g/ day 31 g/day

  18. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + 119 g/day respiration growth/repair 65 g/ day 31 g/day

  19. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + 119 g/day respiration growth/repair 65 g/ day 31 g/day ABSORPTION EFFICIENCY 96/215 X 100 = _____ Growth efficiency 31/215 x 100 =__________

  20. Ingested food absorbed indigestible leaves by the gut parts 215 g/day = 96 g/day + 119 g/day respiration growth/repair 65 g/ day 31 g/day ABSORPTION EFFICIENCY 96/215 X 100 = 44.7% Growth efficiency 31/215 x 100 = 14.4 %

  21. Examples in binder (homework)

  22. VI MATERIALS CYCLING (handout in binder of 3 cycles)Carbon, nitrogen, phosphorus • Nutrients are mainly cycled out of the photic zone P C D

  23. Complex Bacterial Process for various nutrients Dissolved Nutrients Organic Form (Non-living) Photosynthesis Respiration Death Excretion Organic Form (living)

  24. Decomposers in action • Carbon- may be w/ or w/o bacteria • Nitrogen- 3 bacterial steps • Phosphorus- 1 bacterial step

  25. 71%

  26. MASSIVE INFLUX OF PHOSPHATES OCCURRED IN THE 1970’S INTO LAKE ERIE. IT WAS ADDED TO DETERGENTS AND CAUSED OVER FERTILIZATION OF THE ALGAE. SUBSEQUENT DEATH OF THE ALGAE CAUSED DECOMPOSERS TO USE UP THE OXYGEN IN THE WATER AND SUFFICATE FISH.

  27. Large scale eutrophication: Dead Zone in the Gulf of Mexico

  28. VII SEDIMENTS- origin of sediment components4 types • lithogenous/ terrigenous/ clastic- derived from continents (silts, clays, and sands) • biogenic- plant and animal remains, (usually microscopic carbonates and silicates) • hydrogenous- chemical precipitates from water (magnesium nodules, oolites- limestone) • cosmogenous- micrometeorites

  29. OOLITES

  30. MAGNESIUM NODULE

  31. Test Topics for Tuesday • biotic/abiotic zonation (must know diagrams) ecosystems, food web/chain (ID members and interpret changes) • phylum matching (characteristics and members) • absorption/growth efficiencies calculations % • Biogeochemical cycles • nitrogen, carbon, phosphorus • Crossword, Oceanography Ecosystems worksheet • Video The Deep • TEXT PAGES Read 279-292, 296-299

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