Many community ecologists are concerned about the effects of habitat fragmentation. In particular they worry that clear-cutting of old growth forests will produce small, isolated forest patches and that species will be lost from these smaller patches because small patches cannot support as long a food chain as bigger patches. This concern is based on which of the following hypotheses discussed in this chapter? a. The productivity hypothesis
b. The ecosystem-size hypothesis
c. The exploitation ecosystem hypothesis
d. HSS's the 'world is green' hypothesis