Our next lab concerned the organisms of the intertidal zones. The intertidal zone is defined as the area between land and sea which is regularly exposed to the air by the tidal movement of the sea. There are four different intertidal zones. They are the Splash zone, upper intertidal zone, lower intertidal zone, and the Subtidal zone. In our lab we compared the abundance of rock crabs between the lower intertidal zone and the upper intertidal zone. Rock crabs are found on the rocks along the shores of Hawaii. They are fairly small and common in Hawaii. In our lab we found that there were more rock crabs in the lower intertidal zone.
This was our procedure:
1. At the Waipuilani tide pools arrange materials needed to collect data. (Materials: Quadrat, Transect, Digital thermometer, Refractometer, and Pipette.)
2. Randomly place Quadrat under water in the Lower intertidal zone.
3. Bring Digital thermometer, Refractometer, and Pipette to the edge of the Quadrat.
4. Turn on Digital thermometer by flipping the on/off switch.
5. Place the metal tip of the Digital thermometer in the water that is within your Quadrat.
6. Bring the thermometer out of the water and record the water temperature.
7. Suck up water from within your Quadrat with Pipette.
8. Place 2-3 drops of water from pipette onto the glass surface of the Refractometer.
9. Look through eyepiece of Refractometer and record the data on the right of the screen.
10. Take the Refractometer and the Digital thermometer away from water and put away.
11. Take Transect to the Quadrat and measure the distance from the edge of the Quadrat to the shoreline. (Record data)
12. Return to Quadrat and count the amount of Rock crabs within.
13. Record the amount.
14. Pick up Quadrat and randomly place it on top of the rocks in the upper intertidal zone.
15. Measure the distance from the edge of the Quadrat to the shoreline and record.
16. Return to the Quadrat and count the amount of Rock crabs within.
17. Record data.
18. Randomly place Quadrat under water in the Lower intertidal zone.
19. Count the amount of Rock crabs within.
20. Record the amount.
21. Repeat steps 14-20 five times.
22. Put materials away.
This was a really fun lab, durring our experiments we encountered alot of really cool organisms and cute little animals. -
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1 comment:
Shanti, you asked why you were getting an 'I' on this blog check. I think you can tell me why. No graph or pics. Important stuff. Just look at your killer plankton entry.
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