Environmental Engineering Reference
In-Depth Information
Fig. 13.3 General features as for
Fig. 13.2
.(a) Trade-off between competition and predation
(apparent competition). Species 1 is more sensitive to predation, and species 2 is more sensitive to
resources. Both resource consumption and predation are density dependent. Niche overlap is low.
(b) As for (a), but only resource consumption is strongly density dependent. Niche overlap is high.
(c) As for (a), but only predation is strongly density dependent. Niche overlap is high
to the maintenance of high diversity by means of predation because, by itself, it
allows stable coexistence of at most two species as discussed in detail above.
Complexities of Foraging Behavior and Resource Acquisition
Predation and resource competition intimately involve the behavior of the
organisms in seeking food and resources, or avoiding predation [
45
]. Interference
competition is one behavior
that
is accounted for
reasonably well
in the
