BIO 120L Module 8 Simulating Methods to Estimate Population Size Lab

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Name: Nicole Rosandich Date: December 15, 2023 BIO 120L Module Eight Lab Report: Simulating Methods Data Distanc e Transe ct 1 Trial 1 Transe ct 1 Trial 2 Transe ct 2 Trial 1 Transe ct 2 Trial 2 Transe ct 3 Trial 1 Transe ct 3 Trial 2 Transe ct 4 Trial 1 Transe ct 4 Trial 2 Transe ct 5 Trial 1 Transe ct 5 Trial 2 0 mm Blue Blue Blue Blue Green Green Blue Blue Blue Green 5 mm Blue Red Blue Blue Green Red Blue Blue Green Red 10 mm Blue Green Blue Red Red Green Blue Blue Red Blue 15 mm Red Blue Red Green Blue Blue Red Blue Blue Blue 20 mm Blue Blue Green Blue Blue Red Blue Red Blue Blue 25 mm Blue Green Blue Blue Green Blue Blue Blue Green Red 30 mm Blue Blue Blue Green Green Red Red Blue Green Blue 35 mm Blue Blue Green Blue Red Blue Green Blue Red Blue 40 mm Blue Red Blue Blue Green Blue Red Blue Green Blue 45 mm Blue Blue Blue Red Blue Blue Blue Blue Blue Blue 50 mm Blue Blue Red Blue Blue Green Blue Blue Blue Blue 55 mm Green Red Blue Blue Green Green Green Blue Green Blue 60 mm Blue Blue Blue Red Green Blue Green Green Green Blue 65 mm Red Blue Red Blue Blue Red Red Red Blue Blue 70 mm Blue Blue Blue Blue Red Green Green Blue Blue Red 75 mm Blue Blue Blue Blue Green Blue Blue Green Blue Blue 80 mm Red Blue Blue Blue Blue Blue Blue Red Red Blue 85 mm Blue Green Blue Blue Blue Red Green Blue Blue Blue 90 mm Blue Blue Blue Green Green Blue Green Red Blue Red 95 mm Red Red Green Blue Red Blue Red Green Blue Blue 100 mm Blue Red Blue Blue Blue Blue Green Red Red Green

1 Data Table 2 Color Trial 1 Total Trial 1 Percent Coverage Trial 2 Total Trial 2 Percent Coverage Blue 59 56% 67 64% Red 20 19% 22 21% Green 26 25% 16 15% Total Number of Squares Counted 105 100% 105 100% 1. In terms of percent coverage, rank the colors on the Population Sheet from highest to lowest. In both sets, blue was my highest percentage, however, the green and red switched between my first and second set. They were very close in percentage but in the first set, it was blue, green then red, and the second set was blue, red, green. 2. How would the data change if 10 transects were run during this activity? I would presume to see this happen repeatedly. Blue in the lead, then the red and green switching closely as second and third. 3. In addition to percent cover, what other information could be determined about each population using the transect data that was collected? You are able to see trends and densities with transect data. 4. List three situations or types of organisms for which this type of population study is appropriate. As reported in an article from the national park service, the transect is important to use for field observations to record data over time in the same area, also the can use drop pins to tally and id species of vegetation to access vegetation coverage. The continue that, “ Without them, it would be very difficult to represent the complexity of a natural environment.” (NPS) I would then conclude that we would use this for vegetation, change in habitat or small organisms with in the area. © 2016 Carolina Biological Supply Company

2 5. Give an example of a situation where this type of population study would not be ideal. You would not want to use this with something like adult birds, because they would be moving around way to fast to get any type of accurate count or measurements. Activity 2 Data Table 3 Quadrat # # of Red/6.25 cm 2 # of Green/6.25 cm 2 1 61 37 2 53 39 3 62 31 4 58 37 5 63 32 Average Density/ 6.25 cm 2 59 35 Density/1 cm 2 9.504 5.632 6. Given the density calculated for 1 cm 2 , what would the estimated population be for an area that is 20 cm by 40 cm in size? 7. How would the data change if 10 quadrats were sampled for this activity? More accurately determine the area. 8. In addition to population density, what other information could be determined about each population using the quadrat data that were collected? If the population is physically countable and you need a precise estimate. I would this this is like the census. It would give us a quadrant, like city or county or state borders. Then we can gain an accurate picture of the demographic of that region. Weather it’s household size, population density to a region, or age, or gender, or household income. © 2016 Carolina Biological Supply Company

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