User talk:Courtney Krawczyk/Notebook/Biology 210 at AU: Difference between revisions

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'''Study of Biological Life in an Ecosystem'''
'''3/18/2015'''
'''January 28, 2015'''


'''Purpose''' In this study both biotic and abiotic components were observed in an ecosystem. This portion of the study includes analyzing the specific 20 x 20 meter transect, specifically looking at what makes up this ecosystem. After a collection of the biotic and abiotic components was taken, a hay infusion culture was created to later observe protists, bacteria, and changes in the culture overtime.
You need to include the concentration of caffeine in the methods section. Obviously you are lacking quite a bit of data in your results section. LS


'''Materials and Method''' After being assigned a specific transect to observe, my lab partners and I first drew a map of the area. Everything was labeled that was visible, for example, plants, soil, rocks, leaves, and even manmade objects. A list of five biotic and five abiotic components found in the transect was also composed. Then a sample consisting of soil and plants was put into a 50mL conical tube. After returning back to the lab, 11.7 grams of the sample was placed into a jar with 500mLs of water. Then 0.1 gm of dried milk was also added to the sample and mixed for about 10 seconds. The jar, known as a hay infusion culture, was then labeled with our transect number (5), and left in the lab for a week with the lid off.
'''3/6/2015'''
Fantastic! LS


'''Data and Observations''' Attached below is a hand drawn map of the transect as well as other pictures of the area.
'''2/22/2015'''
The 20x20 meter transect consisted of a larger grass area. It also contained an area of soil with bushes, weeds, berries, dead leaves, and twigs. Coming into one corner of our transect was also a man made concrete sign.


5 biotic components of the transect
Vert lab - Good job. For your food web, earthworms also eat dead organic matter. Write out the Genus names.
-bushes (possible rose plants)
-grass clumps under bushes
-grass
-berries
-weeds


5 abiotic components of the transect
Invert lab - Excellent job on the insect identification. Thank you for mentioning which insects you collected in your funnel and what you observed from other sections. Since you have pictures of the insects, you might want to identify them further for the lab report - it might make it easier to see how they fit into the food web. The one on the far left is a springtail. LS
-soil
-dead leaves
-snow
-manmade stone structure
-wood chips/twigs


'''Conclusion and Future Directions''' It can be concluded that both biotic and abiotic components make up the transect. I predict that next week when observing the hay infusion culture, it will probably appear moldy and have a noticeable smell. When observing slides with samples taken from the culture, I  expect to see protists within the sample.
'''2/17/2015'''
Hi Courtney, somehow I forgot to leave you comments when I looked at your notebook this weekend. Overall it was good, but as I told April and Musfeq, you need to spend some time on plant identification. All of your plants are angiosperms, and you should be able to narrow down the kinds of grasses you have. Besides the USDA website, this might help: http://www.ipm.ucdavis.edu/TOOLS/TURF/TURFSPECIES/index.html
LS


http://openwetware.org/images/2/28/Map_for_bio.jpeg
'''2/6/2015'''
CK
What you wrote was very good, but you are missing the serial dilution table. You needed to include the number of colonies for each plate and the conversion to colonies/mL. LS
 
 
'''1/30/2015'''
Your entries are very thorough, and I'm glad that you tried to estimate the number of each organism you saw. You should have measured them using the ocular ruler, though. Also, next time include a hypothesis and prediction for the experiment and then address it in the conclusion. For example, you could have hypothesized about the differences between the two niches in your jar, and written a sentence summary of your results. LS

Latest revision as of 10:40, 20 March 2015

3/18/2015

You need to include the concentration of caffeine in the methods section. Obviously you are lacking quite a bit of data in your results section. LS

3/6/2015 Fantastic! LS

2/22/2015

Vert lab - Good job. For your food web, earthworms also eat dead organic matter. Write out the Genus names.

Invert lab - Excellent job on the insect identification. Thank you for mentioning which insects you collected in your funnel and what you observed from other sections. Since you have pictures of the insects, you might want to identify them further for the lab report - it might make it easier to see how they fit into the food web. The one on the far left is a springtail. LS

2/17/2015 Hi Courtney, somehow I forgot to leave you comments when I looked at your notebook this weekend. Overall it was good, but as I told April and Musfeq, you need to spend some time on plant identification. All of your plants are angiosperms, and you should be able to narrow down the kinds of grasses you have. Besides the USDA website, this might help: http://www.ipm.ucdavis.edu/TOOLS/TURF/TURFSPECIES/index.html LS

2/6/2015 What you wrote was very good, but you are missing the serial dilution table. You needed to include the number of colonies for each plate and the conversion to colonies/mL. LS


1/30/2015 Your entries are very thorough, and I'm glad that you tried to estimate the number of each organism you saw. You should have measured them using the ocular ruler, though. Also, next time include a hypothesis and prediction for the experiment and then address it in the conclusion. For example, you could have hypothesized about the differences between the two niches in your jar, and written a sentence summary of your results. LS

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