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Biobottles

Biobottles. Marking P eriod Project. What is a Biobottle ?. A B iobottle is a closed system where light is the only thing added Needs and products of each living thing must be balanced so that the environment remains favorable in terms of food, water, gases, fertilizing elements.

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Biobottles

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  1. Biobottles Marking Period Project

  2. What is a Biobottle? • ABiobottleis a closed system where light is the only thing added • Needs and products of each living thing must be balanced so that the environment remains favorable in terms of food, water, gases, fertilizing elements

  3. What is a Biobottle? • Objectives: 1. Nutrient cycling 2. Laws of Thermodynamics applied to natural systems 3. Law of Conservation of Matter

  4. Biobottle Project • Modeled after the “Ecosphere”

  5. Biobottle Project • Water, algae, brine shrimp • Light is energy that drives system

  6. Biobottle Project • Another “Biobottle” on a grand scale • Biosphere II, Oracle, AZ • 8 people living in a closed system for two years • Now used to simulate a variety of environmental conditions on Planet Earth

  7. The plan • Teams of 2 students • Must design a system integrating three biomes • Must include a community of plants and animals in each biome that are in balance

  8. The Plan • Clear, plastic container sealed air-tight • Balloon for “lungs” • Non-living elements (sand, dirt, gravel, wood) • Fertilizing agents • A list of major plants and animals and relative numbers • Rationale for success

  9. Construction • Some students start plants first, add animals later • Complete list of organisms • Source of organisms (hitchhikers) • Condition of organisms at sealing • Record mass of organisms if possible (or size and number) • If plans are changes, explain why in final report • Take initial readings

  10. Construction • Live animals that work well: - guppies - Zebra Danios - Betas - snails

  11. Construction • Animals that do NOT work well: - NO warm blooded animals -crickets become infested with fungus - moths” wings stick to sides

  12. Construction • Other hints: - shoelaces work well as wicks - screens between biomes - water levels for ponds (must have atmosphere above) - night-time fish kills

  13. Construction • Other options: • Weigh initial biomass • Take initial readings for: - Dissolved oxygen - Nitrogen - Phosphorus

  14. Charts • Energy Flow Chart - how light energy is converted to food energy and cycled • Biogeochemical Chart -C, O, or N cycle in bottle - combination of all cycles showing material cycling - photosynthesis vs. respiration

  15. Records • Dated record of changes - each organism - size - quantity - condition -behavior • Appearance of water, soil, sediment, condensations

  16. What if the System Crashes? • If organisms have died, do an “autopsy” • Do this outside!

  17. Conclusion • Survey of what organisms are alive and in what condition • You may take final readings of DO, N, P

  18. Conclusion • Explanation of facts learned from keeping record of observations - Interactions between organisms - How abiotic factors affected living organisms • List of changes your would make if you did project over again www.bottlebiology.org

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