Environmental Hazards of Invasive species

EnvironmentalHazards of Invasive species

EnvironmentalHazards of Invasive species

Invasive specieshave the tendency to spread and cause damage to the environment.Therefore, they make their population grow in an uncontrolled mannerwhile at the same time they displace the indigenous varieties. Whenzebra and Quagga Mussel are introduced into fresh water lake, theyoutcompete the native species, and their population increases in anequal measure. As this happens, the native species die out because ofthe fact that they don’t easily adapt to the situations in thecompetitive environment. On the same note, the invasive speciespopulation decreases after a period because nutrients becomedepleted. Food and all essential elements for survival get exhausteddue to competition and hence most species die. This also happensbecause they are not able to produce enough offspring to maintain aviable population.

Implications associated with these alterations to the ecosystem as awhole are numerous. More importantly, they cause damage to theenvironment and even harm human health. Additionally, they causespecies extirpation and even extinction. The impacts of the invasivespecies also operate at the ecosystem level through the naturalcycle’s alterations. The energy flow modifies the changes in thefood web leading to trophic interaction. Species invasion can causedegradation in habitat and extinction of native species because theirinfluence leads to their deaths. However, the native gene poolsdilute when the invasive species interbreed with the nativevarieties. Additionally, the community structure alters due toexploitation and the competition from the native species. Invasiveimpacts on other species through parasitism and predation which canchange the abundance of species and this poses certain hazards thatcan influence an ecosystem. As a result, the invasive Zebra canaccumulate toxins in its tissues which pass to the food chain and,therefore, enter animals that end in human consumption.