a. What can be said about the population dynamics of these interacting species?
ID: 216962 • Letter: A
Question
a. What can be said about the population dynamics of these interacting species?
b. Describe the yearly fluctuations.
c. What appears to be the approximate K for each species in the graph?
d. Will these populations continue to fluctuate just like this? Why or why not.
Predict (state or draw) the population numbers for the next 10 years for both species.
150 Snowshoe rabbit ? ? Canada lynx 125 3100 8 75 50 * 25 0 1850 18601870 1880 1890 1900 101920 1930 Fig. 3- The y-axis shows the population size in thousands of species, while the x-axis shows the year.Explanation / Answer
Let us consider Population of Snowshoe rabbit species as A and Canada Lynx species population as B.
The population of the two species A and B in the graph together is showing a definite increase in number in them as the years are increasing. In the first year the species B were around 30 thousand in number where as species A were at 24 thousand in number approximately. In the year 1850, the number increased in population A where as population B was close to Zero approximately. This could have happened due to various reasons like fittest of the survival and also the reproduction rate against the environment. In the year 1860 the number of population of A was close to 150 thousand and number in population B was raising up to 75 thousand and increasing its number, this could be the highest number found in the graph. In the year 1870 there was a huge increase in both the species A and B. Species A was around 100 thousand and species B was around 50 thousand. In the year 1880 again there are increase in numbers and the two peaks are high enough showing a great increase in number, species A is around 130 thousand number in population where as species B is around 80 thousand in number. The next year 1890 the number had just come down, species A is around 100 thousand and species B is around 40 thousand. In the year 1900, there is gradual decrease, species A is around 25 thousand and species B is almost nearing to 5 thousand. In the next year 1910, the number had started to increase up, species A is around 75 thousand and species B is around 25 thousand. In the year 1920, the species A remains at 75 thousand and species B moves up to 30 thousand. In the year 1930, species A moves up to 100 thousand in number and then quickly drops to less than 25 thousand and remains still in the same year, where as species B shows a very slow decrease to 10 thousand and maintains it till the end of the year. So the average population increase in species A is 75 thousand and average population increase in species B is 25 thousand in the years 1860 to 1930.
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