General Features of Species Distributions

When K values are closer together as in (b) and (c), aj never rises near the full (100 %) value. In (d), all three a curves must intersect at a = 0.33 at [L] = K. (For proof see K expressions.) 

Note that a value zero means Kf, is one, and that only one figure was obtainable experimentally.  

As the separation of adjacent K values increases, so does the height of the maximum between them. 

Adjacent a curves cross at [F ] = 1/K , where n is the high n value. For example, o crosses oti at log[F ] = —6.16 for the same reasons given above under the N — 2 cases. 

ao crosses a2 at log[F ] = — jlogXiK2. This is now only approximately the maximum position ofaj (see N = 2 cases) because as and the rest can affect this maximum, but not the log [F ] of the crossing. If a3 and higher are near zero, then ao + ai+a2 = l. Since ocq = a2 at this crossing, 

---