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Hong Kong Student Science Project Competition 2007

Hong Kong Student Science Project Competition 2007. Homemade Ecosphere By Ho Fung College. Chan Hei Ting SHEERA Lo Tin Long KYAN Lau Hiu Ching TRACY. Commercial. Our “ecosphere”. A simple version of our earth. Why did we design an Ecosphere?. Glass/Plastic Bottle. Duckweeds (Producer).

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Hong Kong Student Science Project Competition 2007

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  1. Hong Kong Student Science Project Competition 2007 Homemade Ecosphere By Ho Fung College Chan Hei Ting SHEERA Lo Tin Long KYAN Lau Hiu Ching TRACY

  2. Commercial Our “ecosphere” A simple version of our earth

  3. Why did we design an Ecosphere?

  4. Glass/Plastic Bottle Duckweeds (Producer) Decayed leaf (Dead organic matter) Stream water Snail (Consumer) Shrimp (Consumer) Algae (Producer) Bacteria (Decomposer) ECOSPHERE: Our Set Up

  5. Algae & Duckweeds Duckweeds Algae Algae

  6. Shrimps & Snails Large Stream Snail Large Stream Snail Shrimp Shrimp

  7. Semi-decayed leaf

  8. Collect solution from ecosphere Transfer solution to a beaker Appearance of bacteria after incubation for 3 days Gently daub on agar plate Bacterial Culture

  9. 5 areas of investigation • Population of consumers • Amount of duckweed • Air-to-water ratio • Size of Bottle • Light Intensity

  10. Population of consumers Data 1 ＊ The dead shrimps are removed

  11. Population of consumers Data 2 ＊ The dead shrimps are removed

  12. 1 Shrimp + 2 Snails / 1 shrimp + 0 Snail

  13. Amount of duckweeds >15 days Data 3 1 shrimp + 2 Snails

  14. Duckweed (100% covering water surface)

  15. Air-to-water ratio Data 4 1 shrimp + 2 Snails >14 Days

  16. Air-to-water ratio=1:3

  17. Size of Bottle Data 5 1 shrimp + 2 Snails

  18. The bigger the bottle, the longer the ecosphere survives.

  19. Light intensity Data 6 1 shrimp + 2 Snails > 15 Days

  20. Diffused sunlight

  21. Improvement Why do we add the land environment? To make it more close to the nature !!

  22. NEW Set Up • Glass bottle of 6 Liters • Land: water: air Ratio= 1:3:1 • Inner container • Garden soil • Small plants • Small animals

  23. Organisms • Water: duckweeds, algae, shrimps, pond snails • Land: snail, slug, earthworm,millipede

  24. Main concepts

  25. Interesting Video

  26. References www.eco-sphere.com/ www.abundantearth.com/store/ecosphere.html www.en.wikipedia.org/wiki/Ecosphere www.watersavers.com/docs/otherwatersaver_ecos_ball.shtml www.ecospherics.net/pages/MosqEcoFun5.html www.open2.net/diyscience/ecosphere www.trendhunter.com/trends/ecosphere-self-contained-ecosystems

  27. MAKE ONE YOURSELF~!

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