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Aquatic Animals:
Bluefin tuna and Dolphins
Marissa Linares
African Elephant
The African Elephant is a keystone species that alters their environment such as creating passages that animals can use while they're grazing on trees, or using their tusks to dig up riverbeds in which other animals can also drink from. Many of these animals are dependent on the alteration of their habitats from the African Elephant, but that is becoming increasingly scarce thanks to the threat of pachers. Both savanna and forest elephant populations have significantly decreased and both are considered endangered. The reason for this is because of the ivory trade, in which elephants are killed in order to secure their tusks to create luxury commodities or simply for their exoticism. If there are less elephants, there will be less plants and forests, since many seeds that are dispersed are due to being germinated within the digestive system of elephants.
Houston Toad
Bengal Tiger
Bengal Tigers serve as another keystone species for their environment. They shape the way that prey behave while also keeping them in-check, preventing them from overgrazing in the ecosystem.
Bengal Tigers have been hunted due to them being sought after as trophies. Their body parts are also used in illegal chinese medical practices.
Houston Toads are toads that can primarily be found in Texas within the region of Houston. They've been listed as endangered since 1970, and their range has been decreasing. What's contributed so much to this decline is due to habitat loss and their alterations. While Houston Toads themselves aren't harvested, the environments in which they live in are. Houston Toads require temporary water sources that can last for at least a month, and the urbanization of many wetland areas have reduced the areas that the toads thrive in. In addition to this, these toads are more vulnerable to predators such as fish and snakes.
The overexploitation of animals not only impacts the animals themselves, but the environment as well.
Some examples include:
Alessandro Espinoza
Marissa Linares
Atlantic Cod
Mexican Free-tailed Bat
The Mexican Free-tailed Bat is an important species particularly for farmers. Since a bat's diet can primarily be insects, they can consume many would-be pests that would graze on farm crops. The consumption of these insects has an estimated value of $12 million in pest suppresants saved for farmers.
Urbanization and habitat fragmentation has caused many bats to be displaced, which means that less of them are likely to support the farmers in the insect consumption.
Atlantic Cods are influential predators in the North Atlantic Ocean. They're reponsible for keeping in check other smaller fish populations as well as small crustaceans.
Since the 1970's, they've been overfished either intentionally or unintentionally as a byproduct of attempting to catch other fish. They've been mismanaged and lack of proper care for them has caused their population to decline up until recently due to laws restricting overfishing.
The Atlantic Cod is a significant player in fisheries, as they've provided employment for fishing communities. The decline in population has hindered these communities.
Marissa Linares