Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Construct(verb) to put together the constituent parts of (something) in their proper place and order; to build; to form; to make; as, to construct an edifice. 2  Construct(verb) to devise; to invent; to set in order; to arrange; as, to construct a theory of ethics.
Species interactions within ecological webs include four main types of two-way interactions: mutualism, commensalism, competition, and predation (which includes herbivory and parasitism).Because of the many linkages among species within a food web, changes to one species can have far-reaching effects.he keystone species concept is one of the best-known ideas in community ecology. Although it is true that many species potentially interact with one another in a food web such as depicted in Figure 1, in nature there are big players and little players. The biggest players of all are referred to as keystone species.
A third form, apparent competition, is not. Interference competition occurs directly between individuals, while exploitation competition and apparent competition occur indirectly between individuals (Holomuzki et. al 2010) (Figure 1). Figure 1: The three major types of competitive interactions.