User:Maria Belding/Notebook/Biology 210 at AU: Difference between revisions
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MRB (to be continued) | MRB (to be continued) | ||
*1/29/2014 | |||
Jar of Hearts (Breaking)* | |||
Purpose: The purpose of today's lab is to further explore the microbiology of our land tract and the ecological life within. We are doing so by sampling cultures from our Hay Infusion. | |||
Hypothesis/Prediction: We will observe more species diversity at the top of our infusion than at the bottom, as the top has more exposure to oxygen, allowing more non-aquatic species to survive or grow. | |||
Materials and Methods: | |||
After utilizing a dichotomous key to learn to identify specific and known organisms under a microscope with control slides, we repeated the process using our own Hay Infusion culture. We drew one sample from the surface and a second from the bottom of our jar to ensure as much differentiation as possible. We then put these samples onto slides and observed with the same dichotomous key. | |||
Data and Observations: | |||
Top Sample: 1. ''Coalpidium sp.'' 16 um | |||
2. ''Paramecium'' 50 um | |||
Bottom Sample: 1. "Coalpidium" 100 um | |||
2. "Paramecium bursaria" 75 um | |||
Conclusions: | |||
We were supposed to find a total of six different species for this lab, three from each site. We found two each at the top and bottom - and they were the same species, although of varying sizes. Why would we have such homogeneous results from such different sample locations? | |||
One possible explanation could be how we took the initial sample that became our Hay Infusion. We included dirt, moss, leaves, grass and a little rock, all of which we found in one particular spot in our tract measuring less than six square inches. The life contained may have been diverse to the eye, but perhaps the bacterial life within wasn't. | |||
Revision as of 10:47, 29 January 2015
1/19/15
My computer skills are on par with the average octogenarian, so I'm very proud of myself for getting this to work in only three tries.
MRB
1/26/14
Our Pet Rock
Purpose: The purpose of this second lab was to map out and explore a tract of land for biotic and abiotic features.
Hypothesis/Prediction: This semi-man made small land parcel will contain both biotic and abiotic features.
Materials and Methods:
Data:
Abiotic Features: 1.Large rock. 2.Bench 3.Snow 4.Water 5.Sign
Biotic 1.Moss 2.Dirt 3.Leaves 4.Trees 5.Shrubs
Conclusions:
MRB (to be continued)
- 1/29/2014
Jar of Hearts (Breaking)*
Purpose: The purpose of today's lab is to further explore the microbiology of our land tract and the ecological life within. We are doing so by sampling cultures from our Hay Infusion.
Hypothesis/Prediction: We will observe more species diversity at the top of our infusion than at the bottom, as the top has more exposure to oxygen, allowing more non-aquatic species to survive or grow.
Materials and Methods: After utilizing a dichotomous key to learn to identify specific and known organisms under a microscope with control slides, we repeated the process using our own Hay Infusion culture. We drew one sample from the surface and a second from the bottom of our jar to ensure as much differentiation as possible. We then put these samples onto slides and observed with the same dichotomous key.
Data and Observations:
Top Sample: 1. Coalpidium sp. 16 um
2. Paramecium 50 um
Bottom Sample: 1. "Coalpidium" 100 um
2. "Paramecium bursaria" 75 um
Conclusions: We were supposed to find a total of six different species for this lab, three from each site. We found two each at the top and bottom - and they were the same species, although of varying sizes. Why would we have such homogeneous results from such different sample locations? One possible explanation could be how we took the initial sample that became our Hay Infusion. We included dirt, moss, leaves, grass and a little rock, all of which we found in one particular spot in our tract measuring less than six square inches. The life contained may have been diverse to the eye, but perhaps the bacterial life within wasn't.
