One Step Closer to Mars with Aquaponics - NASA...One Step Closer to Mars with Aquaponics:...
Transcript of One Step Closer to Mars with Aquaponics - NASA...One Step Closer to Mars with Aquaponics:...
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One Step Closer to Mars with Aquaponics: Cultivating Citizen Science in K12 Schools
By: Maria Kolattukudy, Niyati Puranik, Nishant Sane, Kritika Bisht, Nabeeha Saffat, Anika Gupta, Anne McHugh, Angela Detweiler, and Brad Bebout
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Acknowledgments
Angela Detweiler and Brad Bebout (NASA Ames) both performed and analyzed the MinION sequencing runs, with the help of Mike Lee (USC) Miten Jain and Hugh Olsen (UCSC)
Funding for this project came from a NASA Scientific Innovation Fund Grant “Biology IS the technology” during FY 17 and Donor’s Choose with a Toms of Maine match grant
We could not have completed this work without the 50 other students and staff at Meadow Park Middle School
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How do we educate students to solve 21st century challenges?
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How do we create the most efficient aquaponics system with microbes that promote stable plant and fish growth with steady nutrient cycles?
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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From the ground up, we engineered, maintained and analyzed 10 aquaponics systems.
● We engineered 10 different small scale aquaponic system ● We received funding from NASA, and funded the rest on
our own● Each system experimented with different variables● We performed daily tasks● We Analyzed and concluded our data● Sent our genomics data to NASA, and ongoing analysis
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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● Food production is key to long term space travel, aquaponics is one possible design solution
● To develop the most efficient/most plant bearing system
● Large scale citizen science
Why in a Classroom?
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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● Over 55 middle school student
● More possible replication than
in most labs in the same time
frame
● Faster, and great data
● Citizen Science in our schools
● Follows Curriculum for
students
● Unique Experience and
Exposure for Students
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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We tested as many independent variables as possible in our 10 tank system to give ourselves a wide foundation to build upon in future experiments.
Tank 1 Tank 2 Tank 3 Tank 4 Tank 5 Tank 6 Tank 7 Tank 8 Tank 9 Tank 10
Lighting
Plants
Fish
Media
Water Circulation
Nitrifying Components
Lighting: Artificial Natural and Artificial Water Circulation:
Wicks PumpsPlants: Peas Tomatoes Basil
Fish: GoldfishNitrifying
Components:Collected
GravelCommercial Inoculant &
Storebought GravelMedia:Coconut Husks
Clay PelletsFloating
beds
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Experimental SetupThree major structures:
- 10 gallon fish tank
- Fancy and Comet
Goldfish
- Positive control plant
group
- Plant bed
- Experimental Plant
Group
- Media (three treatments)
- Light
- PVC pipe structure
Plant Bed
Fish Tank
Water
Media
Experimental Plants
Control Plants
Water Movement
Light
Floating Beds
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Lighting
Artificial :
○ Erligpowht 45W LED Red Blue Hanging Light for Indoor Plants
Natural and Artificial
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Plants
Basil
Tiny Tim Tomatoes
Peas
CP
CP
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Fish
First: Fancy Goldfish
Second: Comet Goldfish
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Media
Coconut Husks
8-16 mm Clay Pellets
Floating Beds (branded as insulation material)
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Water Circulation
Wicks (braids of twisted polypropylene rope)
Pumps (300L submersible water pump)
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Nitrifying Component
- Nitrate cycle is one of the
most important factors in
an aquaponics system.
- This is the cycle we
expected to see based on
previous research in similar
topics.
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Tanks + Floating Beds + Fish
- 5 tanks on each side- Floating beds made of styrofoam, with holes and mesh for plants- 2 fancy goldfish, regular later
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Material Beds + Pumps
- 13 inch brown Tupperware bins with 15 plants each- Pump cycling system for 5 tanks- Plant roots filtered the water
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Wicks + Lights
- Polypropylene rope for wicks in 5 of the tanks- PVC pipes for lights, plugged in to metal string to the adapters- Lights were pink and blue- Large amounts of masking tape
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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We measured the components of the aquaponics system consistently over the course of 10 weeks
- Nutrient Analysis- Plant growth- Water quality- Temperature- Every two days
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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We measured the nutrients in our system
- Nitrate
- Nitrite
- Ammonia
- pH
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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We measured plant growth and temperature
- Twice a week
- Measured root and stem separately
- Thermometer for temperature
- To see whether our system is working
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We were able to create a curve which showed cycling of nutrients
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Several tanks succeeded in cycling their nutrients
- Ammonia spike followed by nitrite and nitrate spike
- Inconsistencies because of water changes and ammonia input
Ammonia ------
Nitrite -------
Nitrate --------
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Plant Growth
- Not enough data to find correlation between nutrient levels and plant growth rate
- Plant growth affected primarily by human and outside factors not variable matrix
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Next Steps- This data represents time 3, we
have two other time points to look at community shifts over the experiment
- Incredibly rich data- Questions for future aquaponics
students- Data analysis for hypotheses to
be tested in next experiment- MinION on ISS
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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We used the MinION platform
● 16S rRNA sequences ● Identified using
BLAST algorithm through the EPI2ME platform
● Primary biological sequence information
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Each pie chart represents 100,000 species of
bacteria found in each tank
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Next Steps: working to test correlations between species shown in the pie charts and the variable matrix
Tank 1 Tank 2 Tank 3 Tank 4 Tank 5 Tank 6 Tank 7 Tank 8 Tank 9 Tank 10
Lighting
Plants
Fish
Media
Water Circulation
Nitrifying Components
Lighting: Artificial Natural and Artificial Water Circulation:
Wicks PumpsPlants: Peas Tomatoes Basil
Fish: GoldfishNitrifying
Components:Collected
GravelCommercial Inoculant &
Storebought GravelMedia:Coconut Husks
Clay PelletsFloating
beds
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Deltaproteobacteria in Tank 6
- Myxospore forming bacteria
- Found uniquely in tank 6
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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High percentage of Betaproteobacteria in the gravel tanks
- Possibly due to naturally occurring nitrifiers
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Vampirovibrio chlorellavorus
- Chlorella-eating bacteria
- One of few predatory bacteria
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Sphingnobacteria
- Present uniquely in tank 5
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Azosprillum
- Nitrogen-fixing bacteria
- Plant-growth promoting bacteria
- Rizobacter, Erzasprillum
Overview Hypotheses Setup Data Collection Results Conclusions and Next Steps
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Questions?
For more info, see: https://tinyurl.com/y7689rex
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Fish Mortality
- Affected by temp rather than nutrient levels
- Outside temperature spike led to fish death
- Tanks with natural light had lower mortality rate