Knowledge of the laws of biotic relationships, primarily competitive and food relations, is of great practical importance for the conservation of natural communities. The thoughtless or accidental introduction of new species by a person often leads to a disruption of biotic connections and, as a result, to the destruction of unique communities and the extinction of local species. For example, a fayal shrub was brought to Hawaii by a person. This shrub began to multiply and grow rapidly on forested areas of poor volcanic soils. The soil began to be enriched with nitrates, accessible to all plants. Enrichment of the soil with nitrogen favorably affected the number of earthworms that were also brought here by humans. Worms enriched the soil with humus and loosened it. Everything seemed to be good. As a result, conditions arose for the germination of seeds of other plants, the seeds of which fell on the islands, but they could not develop there under the previous conditions. Local birds did not eat the Fayyal’s fruit, but some species that sometimes fly to the islands, for example, Japanese white-eyed, willingly ate fruit and spread seeds with droppings. Fayal populated more and more territories, and the leaf litter of a shrub at the same time hindered seed germination and renewal of local trees. As a result, in less than a hundred years, the appearance of the vegetation of the islands completely changed, indigenous species disappeared, and even deforestation of this shrub did not produce results, the soil composition changed so much, and local trees could not withstand competition with invading plants
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.