It is assumed that the biological community of a patch consists of two species – predators and prey. Supposedly, the prey population does not leave the patch, while the predator population migrates away from the patch if its trophic attractiveness is insufficient. The species structure of the biological community is defined as the entirety of species and types of interactions between them. The article deals with the preservation of the species structure of the biological community of the patch through removal of individuals from the predator population. The removal rates that enable the solution of this problem were found. The article also solves the problem of reducing the rate of removal of individuals, which allows the species structure of the biocommunity to be preserved with a lower anthropogenic pressure on the biocommunity.