Lab+12

=Lab 12 - Communities I=

Next lab: Lab 13

We will combine all the class data for the soil and litter organisms, and we will combine it at this website.

This lab will take 2 weeks.

The quiz on Wed 4/13 (quiz 10) will be over population biology and this lab, community structure I.

For the pyramid chart: The chart would be best done with an upside down triangle, but it's not super important. If you want to draw the logarithmic pyramid with a log scale, that's okay. On the other hand, you can convert your numbers into a log-base-10 number (for example, 100 converts into "2"), and then use a normal linear scale (1, 2, 3, 4, etc.).

=Lecture notes:=

Biological populations are groups of a single species in a specific area. Groups of populations are called communities. Different populations rely on other things to exist, by transferring energy and nutrition. The trophic level in a community is all the populations that share a nutrition-need. Plants rely on the sun and soil, Carnivores rely on other animals to eat, etc. Within the animal kingdom, there are also Saprophages, Herbivores, and Detritivores.

Dr. Weaver did a study on the communities in leaf litter. We will likewise look at leaf litter communities, and soil communities. The different trophic groups can be graphed according to how many there are in a community. This shows how the different trophic levels depend on the one below it in number, because the energy and nutrition only goes "up" in the trophic pyramid. The plants cannot eat the herbivores (usually), and the herbivores cannot eat the carnivores.

Combined for both classes. 2-4pm was Group 1-6, 4-6pm is Group 7-10. Use this in your worksheet:

 * Group || Litter weight || #Macro/Litter || #Morpho/Litter || #Macro/Soil || #Morpho/Soil ||
 * 1 || 60.1 || 105 || 5 || 3 || 2 ||
 * 2 || 81.5 || 1011 || 3 || 4 || 3 ||
 * 3 || 55.78 || 2 || 2 || 11 || 4 ||
 * 4 || 69.92 || 6 || 4 || 4 || 2 ||
 * 5 || 60.5 || 11 || 6 || 2 || 2 ||
 * 6 || 87.245 || 9 || 7 || 5 || 2 ||
 * 7 || 62 || 3 || 2 || 5 || 4 ||
 * 8 || 54 || 2 || 2 || 3 || 3 ||
 * 9 || 28.2 || 3 || 3 || 3 || 2 ||
 * 10 || 61 || 43 || 7 || 6 || 4 ||

Also, check your grades on blackboard, and if anything looks suspicious, just let me know. Once the semester comes to a close, it will be harder to correct any big mistakes.

From an email I got about "Stressbusters", a group that is trained to give 5 minute chair back-rubs on campus:

Congratulations...we are nearing 1,000 back rubs for the school year. 1,000!!! That is a lot of back rubs, and that means we have been busting a lot of stress!
 * Subject:** Stressbusters new events


 * __ UPCOMING EVENTS: __** (send me an email that says which event(s) you would like to do)


 * Wednesday, April 13th ** from 3:30-4:30 pm at the Law School room 107


 * Tuesday, April 19th ** from 6:00-7:00 pm at Ellis Library (near the colonnade)


 * Monday, April 25th ** from 6:00-7:00 pm at Hawthorn (in the Hawthorn classroom)