This theory indicates that the number of species in an island is a representation of the equilibrium between competing forces of colonization and extinction (Manceau et al, 347). This theory indicates that when the number of species present in an island increases, the rate of immigration reduces, hence a high rate of competition that leads to extinction of the small number of species (Manceau et al, 348). In relation to places that are not Islands, this theory indicates that immigration is generally higher to islands that located near mainland compared to islands that are located far away from islands. In this aspect, the number of species in near islands basically equals the number of species on the mainland. From a personal perspective, this theory should not be applied for the conservation of bio-diversity everywhere owing to the fact that the islands could facilitate loss of species as they move towards a relaxed equilibrium.
Reasons why Islands are Home of Many Species
Islands are basically isolated from man-made/anthropogenic activities; this means that they are rich of primary production processes that are pertinent for the survival of many animal species (Courchamp et al, 127). In this aspect, many animal species tend to migrate towards these islands in order to enhance their survivability and continuity. On the other hand, humans perceive islands as protected natural resources; this means that the rate of human activities in such regions is limited hence, creating a conducive environment for the survival of various animal species. Consequently, islands that are located near mainland experience a high rate of immigration of animal species from mainland (Courchamp, 129). This is another factor that has contributed to the increased number/population of animal species in islands. This answer is related to conservation of biodiversity owing to the fact that islands are perceived to be protected regions, hence experience limited human activities.
Work Cited
Courchamp, Franck, et al. "Climate change, sea-level rise, and conservation: keeping island biodiversity afloat." Trends in ecology & evolution 29.3 (2014): 127-130.
Manceau, Marc, et al. "Phylogenies support out‐of‐equilibrium models of biodiversity." Ecology letters 18.4 (2015): 347-356.
