Throughout the years more animals have become an extinct or endangered species because of the way humans have been treating the earth and nature. When it comes to categorizing endangered or extinct animal species there are four different categories. The first category is the vulnerable species. The species in this category are currently in the least amount of danger to become extinct. These are the animal species that are not threatened but because their numbers are declining they are at risk. The second category is the threatened species. These are the animal species that although they have significant numbers, they are at high-risk in their natural surroundings that can move them into the endangered species category and possibly extinction. The category after the threatened species are at the highest risk of becoming extinct and they are categorized under the endangered species category. These are the animal species that are in the most danger of becoming extinct. In order for these species to continue to exist they require a significant amount of protection. Finally the last category is known as the extinct species where these animal-species no longer have any existence. Humans destroying habitats, hunting, causing pollutions are some of the main causes for the endangerment and extinction of many of the animal species. Unfortunately what humans do not all recognize is that since some of these animals are becoming extinct and endangered it is hurting ecosystems.
“Nitrogen and phosphorus are crucial nutrients in aquatic ecosystems as most organisms at the base of the food chain rely on them.”[1] Which many people most likely do not know is the recycling of nutrients is influenced by fish. There has recently been an investigation by American scientists trying to figure out the impact of the extinction of fish on nutrients recycling. “Their results highlight the complexity of predicting the consequences of extinctions from species-rich animal communities.” So, fish species are significantly important when it comes to the recycling of nutrients. Since human-beings need nutrients in their body and the nutrients is needed to make food, people are lessening the amount of nutrients available by overfishing which can have effects on how the ecosystem functions. What is also important about fish and the recycling of nutrients is although people are able to get their nutrients straight from eating fish there are people who do not necessarily like fish. So, the nutrients that is recycled is needed for other items such as plants. Animals, such as bears, eat these plants and these fish which helps them get their nutrients in order to survive. So, also when we eat meat or vegetables some of the nutrients that we get from that is from the recycled nutrients which the process is done because of the fish. Which also means in order for our fish to be healthy humans cannot pollute the water which can also kill fish and over time lead them to be extinct. So, in order for us to get the nutrients we need it is important for many animals to survive especially fish to recycle the nutrients.
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