Wednesday, January 19, 2011
Claim: The bottom of the croe sample has more diatoms.
Evidence: The bottom had 52 diatoms total. The top had 13 diatoms total. Which means that the bottom has 39 more diatoms than the top.
Friday, January 14, 2011
Evidence: Before the drought there were just 2 types of diatoms, phyum class genus and a Navicula. But after the drought we found 5 types of diatoms a phyum class genus, Asterionella formosa, Melosiera, synedro, and a Gyrosigma
Thursday, January 13, 2011
Data: slide #1 top(youngest): asterionella and melosira. slide #2 top(youngest): melosira. slide #3 bottom(oldest): meridon and melosira. slide #4 bottom(oldest): melosira and tabellaria.
Finding: We found more diatoms on the top soil then the bottom. Claim: We found alot of asterionella class on the top then the bottom. Asterionella class had 2 times more than all of the other diatoms. We found melosira in every slide. We only found tabellaria on the bottom slide.
Findings: Claim~We found that the diatoms in the bottom of the core are usually longer than the diatoms in the top. Evidence~Most of the diatoms in the top were shorter than the diatoms in the bottom.
Wednesday, January 12, 2011
Findings:our findings conclude that long skinny diatoms are the most common in the core sample. our evidence is that there were 21 total skinny long diatoms compared to 8 cricular diatoms and 16 short fat.
Tuesday, January 11, 2011
Claim: Yes,there is more in the old part of the core sample then young.
Findings: We did three slides for each young and old. In slide of the young there was eight diatoms we saw. The seconds had seven and in the third from the young we found nine. So for the total of young diatom there was twenty-four. We also made three old core sample slides in the first we found five the seacond slide we found twenty-two and the last slide we found eleven so the total of the older diatoms was thirty-eight
Question: What type of Diatoms are on the surface compared to the bottom?
Procedure: We will take sediment from the surface of the long core put it on a slide and examine it. Then we will do the same for the bottom but we will take sediment from the bottom. Then we will make a chart and compare diatoms.
Varibles Measured: Type of Diatoms
Varibles Changed: Surface and bottom of long core.
Controls: We will use the same amount of sediment.
Claim: We claim that there are more types of diatoms on the top the bottom, although there are some of the same on the top and bottom
Evidence: If you look at the data table the diatoms are the same on some of them like 8(melosiera), 10(aulacoseira), and 11(gyrosigma)
2 further questions: What if we were to take another lake core from another lake and then see what diatoms there are?
What if we were to take samples from the middle of the lake core and add it to the data would there be more of the same?