Pros And Cons Of Invasive Species

We should take a precautionary approach and restrict the importation of non-native species there is the risk that some of these species can become invasive. There are multiple instances where a species was introduced to its non-native range for recreational purposes and eventually ended up becoming invasive. The feral pigs in Hawaii were intentionally introduced by Polynesian explorers. When Polynesians returned to Hawaii, the settlers had something to hunt and eat. Since the pigs’ arrival, they have caused destruction to Hawaii’s ecosystem. These pigs’ appetites and trampling nature to trees and vegetation is a disturbance, which led to the invasion of strawberry guava and the migration of the native Hawaiian birds to higher elevation. Now
What makes an invasive species invasive is its rate of growth since there are no predators nor competition in the introduced range and/or enemy release. When there is no pressure on this non-native species, it will continue to grow in outrageous numbers and eventually dominate the habitat it is in. Once the habitat is dominated, the ecosystem is then altered. This process is called niche usurpation. This varies from changes in biomass, hydrology, diversity, fire regimes, etc. At this point, the nonnative species is considered invasive. Some invasive species become agricultural pests, competing with crops or eating crops in massive quantities. We should take a precautionary approach, when it comes to non-native species, to avoid these
Due to the risks of introducing a new species, it is necessary to preserve our biodiversity. When a non-native species becomes invasive, the species disrupts the process of evolution and growth of the country’s biodiversity. For example, the feral pigs in Hawaii ate plenty of native plants that could’ve evolved into species that could’ve been used in medicine or in hygiene products. Biodiversity is always changing through evolution. This process happens naturally on its own. When a new species is introduced, there is a possibility of the species replacing another species or throwing off the natural balance in ecosystems. There are invasive plants, called water hyacinth, that float on top of water that steals sunlight from underwater plants. With the water hyacinth stealing all the sunlight, these underwater plants die. These underwater plants were food sources and hiding spots for fish. Now these fish must find a substitute food source or die, and predators are much harder to hide from. The water hyacinth completely modifies the habitat in Lake Victoria and competes with native plants. These possibilities lead to potential extinction of native species. By taking precautionary approaches, we could prevent extinctions and promote evolution to preserve our