Sea turtles yearly rise













My research for population growth was the yearly growth of sea turtles. Some of my basic variables would be birth rate, death rate, rate of increase, carrying capacity and starting population. For my test I made it so that the starting population would be 20 sea turtles. Since turtles can have many offspring a year, I made the birth rate .6 or 60%. Also, since there are obviously turtles that die each year and since many offspring either gets eaten while still in the egg or maybe die of other natural causes, I made the death rate .4 or 40%. I used an increase rate of .1 for my population and the carrying capacity is at 10,000. Even though the area where most sea turtles live is big, they still need enough food to feed everyone.  Because there is a high birth rate and the number of sea turtles goes up every year, then in 340 years, the ocean will be at its carrying capacity of sea turtles.

To figure out the total population I used the information I had to make a graph, to make that graph I had to use the equation =E2+$B$4*E2*(($B$5-E2)/$B$5)/$B$2*$B$3. When it comes down to it, it is just taking factors of the rates and adding and multiplying them together until you get your end population in 200 years. During this activity of seeing how populations can grow in short amounts of time, we learned that in just 340 years, there could be an abundance of sea turtles or other animals. We also learned how to make a more logistic type of graph instead of the usual graph that just keeps going up and doesn’t stop. This activity helped us learn how to be more advanced with our graphs and knowledge.

Note: This is a made up scenerio for what can/ could possibly happen in years from now. This is not a true growth chart.