lab bio present group 5
TRANSCRIPT
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+ Investigation of Colony Morphology in Outcrop Communities at Different Altitudes on Mount Arabia
By Ludia C., Shiworke W., Jeffrey O., Emma B.
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+Question:
How do different altitudes of pools relate to the diversity of
bacteria?
Goal: To determine whether different altitudes of pools relate to the diversity of bacteria in the outcrop.
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+Hypothesis and Prediction
Hypothesis: More diverse bacteria
are found in lower altitudes as opposed to high altitudes.
Prediction: If more bacteria in
lower pools, then more diverse colonies in lower altitude pools.
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+Summary of Experiment
Investigating micro-diversity in granite rock outcrop of Arabia Mountain
12 samples were collected from pools at different altitudes
Different samples from edge/middle of each pool Diversity investigated based on colony type, cell shape,
motility and color
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+Background Information:
Mount Arabia Granite rock outcrop Bacterial and colony morphology “Manadnock” extrusion Endemic species
Ex: Confederate daisy
Biofilms and Dish Gardens Agar plates
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+Materials Agar plate cultures with bacterial
colonies Sterile swabs Petri dishes/ sterile plates Metric ruler Stereoscopic microscope Gloves Litmus paper Test tubes Pipettes Tape Camera
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+Methods Swab dish gardens of low
and high altitudes. Measure depth,
temperature, and pH. Record color, shape,
margin surface, and number of colonies.
Observe motility, cell shape, and color of bacteria.
Take pictures!
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+ResultsNumber of Colonies:
For low elevation (est. 890 ft. elevation) 92.5 average colonies
per plate.
For high elevation (est. 930 ft. elevation) 112.5 average colonies
per plate.
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+Variety of Colonies Characteristics
Shape: round, irregular Margin: smooth, lobate Surface: smooth Color: creamy white
Shape: round, irregular, punctiform, filamentous
Margin: smooth, lobate, wavy, filamentous
Surface: smooth, concentric, wrinkle, contoured
Color: creamy white, purple, yellow
Low Altitude High Altitude
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+Bacteria in Low Altitude Dish Gardens Table 11. The cell shape, motility, and color of bacteria
found colonies of low altitude pools
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+ Results
Figure 1.1. Bacteria found in low altitude dish gardens
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+Bacteria in High Altitude Dish Gardens Table 2.1 The cell shape, motility, and color of Bacteria
found in colonies of high altitude dish gardens
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+ Results
Figure 1.1. Bacteria found in high altitude dish gardens
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+MobilityHigh altitude middle #2 colony A
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+Discussion•Results vs. Hypothesis•Trends •Problems•Other researches on this subject.
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+resources
http://www.arabiaalliance.org/index.html http://en.wikipedia.org/wiki/Monadnock http://www.rci.rutgers.edu/~microlab/CLASSINFO/
IMAGESCI/colony%20Morphology.pdf