If we want to increase the biodiversity of an ecosystem, which species should be added? Dominant species, secondary dominant species, common species or occasional species.

Due to the complexity of various ecosystems, in order to increase the biodiversity of ecosystems, the number of species that need to be increased is also different. Simply divided into the following categories.

1) If an ecosystem is a traditional ecosystem, if the dominant species are simply added, there is no doubt that the dominant species will gain more advantages, other species will be excluded and removed, and biodiversity will not increase; If sub-dominant species are added, it is possible that the status of sub-dominant species will rise and become dominant species. If the dominant species are different, it is possible to produce species that coexist with each other. Of course, it is also possible that no species has increased. If common species are added, common species are the main species of the ecosystem in this area. Even if it is not artificially added, this ecosystem will still be transformed, so the final result is very similar to a mature ecosystem, that is, biodiversity is not the highest; However, if rare species are added, it will be beneficial to the balance of the ecosystem, and the ecosystem will continue to be in succession and turmoil, and the biodiversity will generally be higher at this time.

To sum up, in the traditional ecosystem, for dominant species and secondary dominant species, choosing to increase secondary dominant species is more likely to increase biodiversity; For common species and rare species, it is undoubtedly possible to have higher biodiversity by increasing the number of rare species, which is of course possible, but not necessarily.

2) It is different if it is aimed at some special ecosystems. For example, many species have allelopathy, that is, their growth restricts the survival of other species. There are many such examples, such as the large-scale cultivation of eucalyptus in the south, the obstacle of continuous cropping of crops and so on. This gives us another enlightenment, that is, no matter dominant species or sub-dominant species, no matter common species or occasional species, as long as someone can provide allelopathy, the number of this species will undoubtedly increase significantly, but the biodiversity will undoubtedly decrease.

To sum up, for the ecosystem of allelopathic species, it is undoubtedly possible to increase the diversity of the ecosystem by increasing the number of allelopathic species.

3) It is impossible to fully understand all the characteristics of all ecosystems by continuing to emphasize that ecosystems are a complex organic process or the grey theory in system theory. After all, many ecosystems have many differences and need to be proved one by one. I hope it can inspire your thinking ~