Answer question 1 & 2. assume a value obom and . Now let\'s assume that the size
ID: 57351 • Letter: A
Question
Answer question 1 & 2. assume a value obom and . Now let's assume that the size distribution of seeds and their ubundance example, in cument A to B and C. As the size disuibution of seeds changes assume 3 V vary as a function of environiental conditions. For in Figure lb the average secd Figure 1 (a) Proportion of different seed sizes making up the diets of two species (species 1 and 2),.(b) Relative abundances of the different seed sizes in three different size increases from envi environments (A, B, and C). ronment A so will the carrying capacity (K) for each species. Now assume that the carrying capacities of the two species vary as shown in the following table. zero isoclines in each of the three environments requires the values presented in the following table. Environment K1 Klla K2 K2B 75 150 150 300 22 40 150 300 75 Environment 250 15o1s 225 450 Species 1 (k) Species 2 (K) 225 75 150 150 75 225 The outcomes of competition in these three environments using the Lotka-Volterra equations are graphically depicted in Figure 2. In environment A, species I wins; in environment B, , species 2 wins. As the om one en- We can now explore the changing nature of competi- species I and 2 coexist, in environment C tion berween the two species at these three sites by using the relative abundance of different seed sizes changes f otka-Volterra equations and the graphical analysis of the zero vironment to another, the resulting changes in growth isoclines presented in Section 14.2. Construction of the of the two species shift the nature of interspecific competition. vironment to another, the resulting changes in carrying capacities
Explanation / Answer
1. In the environment when the alpha=0.5 and beta= 0.25, this will change the competition coefficient of only K2 and K1 will not change. The nature of the graph will totally change, as K2 is 75 in environment A, the K2/beta will change to 300 instead of 150 due to the change in beta value. The competition of species 1 over species 2 will come down compared the situation present in the graph as the two lines in the graph will croos each other.
2. Environmental change, disease, and chance might be few of the factors which could change the competition coefficients in the three environments.