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How do invasive species affect the ecosystems
The impact of invasive species on ecosystems
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The Chicago and Ship Canal should be closed until the problem is solved to keep the Asian Carp out of the Great Lakes. The canal should be closed because the Cato are dangerous to the food chain and to people. The Asian carp are being introduced to unknown waters and can be devastating to the waterlife ecosystem. The carp compete with native bottom feeders, which are much smaller. They are known to be harmful due to,”...when the Asian cargo outperform them (the native bottoms feeders), the whole food chain suffers, all the way up to the people.” If the caro continue to inhabit the unknown waters, eating algal toxins and the native fish, it can continue to cause harm to the food chain. Not only are the Asian carp harmful to people through the
As if there weren’t enough problems for scientists trying to save the Great Lakes Eco System. Many non-native species have entered the eco system and many of them are harmful. Every species in itself has played a role in the eco system. These non-native species make it increasingly difficult for the Great Lakes Eco System to be regulated.
The Erie Canal was a man made water way that stretched to be three hundred sixty three miles long. The canal started construction in1817, and took nine years to completely finish the building process. People during this time had many positive, and negative opinions about the fact that this expensive canal was being built. The idea of the Erie Canal originates with Jesse Hawley, the idea was to connect the great lakes to the Atlantic ocean making an easy path to the west from the east without having to pass Niagara Falls. The canal was mostly built by Irish immigrants who were hated, or disliked, by most people. People had ideas and predictions about what would come of this canal. Let's just see which of the predictions were more accurate to
Great Lakes Regional Pollution Prevention Roundtable. GLRPPR, 12 Dec. 2013. Web. 15 Dec. 2013. .
There is one reason Chicago is as big as it is today and that is the fact that it is the largest rail city in the world. The railroad made Chicago what it is today, and although the canal was very important in the history of Chicago the railroads importance out weighs it by far. The canal was important because it was the vision of the first settlers of Chicago to have an all water trade route that would go through Chicago. What those first explorers saw was a way to make a canal so that they could transport goods from the St Lawrence River all the way to the Gulf of Mexico with less cost and with more efficiency. The canal was the reason Chicago was settled in the first place if not for it there might very well not be a city called Chicago. You could argue that the canal was the most important thing in Chicago's history but I think the railroads were much more important. The railroads enabled Chicago to become one of the biggest cities in the world by bringing in different business and all types of goods. Chicago is a very key location to have a railroad-shipping hub. This is because it is centrally located in the United States so goods can be shipped in almost any direction and received in a shorter amount of time. William Butler Ogden was the one who pushed for Chicago to adopt a large rail system and he should be known as the one who made this city boom. St. Louis or another centrally located city could have very well adopted the rail system and they would have reaped all the benefits.
Joseph Mallord William Turner, 1775-1851, born the son of a London Barber and Wigmaker, is considered one of the greatest European artists of the 19th century. Turner, the English romantic landscape painter, watercolourists and printmaker, was regarded as a controversial and revolutionary figure by his contemporaries despite his training being similar to other artists of the time. His work ‘Walton Bridge’, Oil on Canvas 1806-10, reflects much of his training as a young artists as well as his well-known Romantic style. In this essay I will follow the beginnings of Turners artistic life, showing how his influences, training and opinions surrounding landscape painting have influenced his work ‘Walton Bridge.’ I will further explore how art critics, fellow artists and the wider public of the 19th Century received ‘Walton Bridge’ and his Landscape paintings in general.
...d when transoceanic ships drop anchor in freshwater ports. They have become an invasive species in North America, and as such they are the target of Federal policy to control them, for instance in the National Invasive Species Act (1996).
Invasive species do not only affect other species in their ecosystem, but also cost the United States more than one hundred and twenty million dollars each year in damages (“Cost” par. 2). Invasive species come in all different forms, and all have a negative impact on the environment. These species can come into a new area without being detected at first, but as time goes on their effects can soon be seen. Efforts are being made to prevent these invasive species from destroying fish population and habitat, but in order to be successful they need to be done on a much larger scale. In order to protect Wisconsin's waters, which are already infected with many invasive species that cause great damage to our bodies of water, more actions need to be taken. It is vital to remove all invasive species from Wisconsin’s waters because it will improve fish habitat, native fish population, and water quality.
The Chesapeake Bay plays host to an astonishing amount of plant and animal life, providing much of our fish intake for species that aren’t being overfished. For the species that are being overdrawn, the Chesapeake Bay Foundation is working to restore the populations, and it’s going well thus far. Another theme that is endangering the marine life populations as well as the health of the human population is the massive amount of polluti...
As global temperatures and ocean levels rise, the water levels of the Great Lakes continues to fall. As the lakes hit their all time lowest level in global history in 2012, society remains ignorant to the imposing doom that lurks ahead. Since the Great Lakes make up the largest group of fresh water lakes on Earth and are responsible for approximately 21% of the Earth’s fresh water supply, this issue is becoming one of the largest environmental and economical issues our modern world faces. The effects of this issue include destroying animal habitats and a major economic market; shipping. Water levels in the Great Lakes have been dropping for the past fourteen years, but it wasn’t until boats were scraping the bottom of Lake Huron that people began to take notice. This terrible environmental issue has been dubbed a long term cycle of over evaporation and not enough precipitation to replenish the Lakes. Keith Kompoltowicz, chief of watershed hydrology for the United States Army Corps of Engineers in Detroit has been monitoring this issue for a decade and has made startling discoveries, such as in 2012, he discovered Lake Michigan and Lake Huron’s water levels only rose four inches after winter, whereas the Lakes have been regularly recorded as gaining a foot of water after the winter season had ended. This amount of water added is not enough to maintain a proper water level during the dry, hot summer seasons that evaporate much water from the Great Lakes. While some scientists say that this is just a cycle that will adjust itself naturally, most experts that have been studying this phenomenon, such as Kompoltwicz, would agree that the issue has gone to far
In The Artificial River, Carol Sheriff describes how when the digging of the Erie Canal began on July 4, 1817, no one would have been able to predict that the canal would even be considered a paradox of progress. One of the major contradictions of progress was whether or not triumphing art over nature was even considered progress. People were not sure during the nineteenth century if changing the environment for industrialization was necessarily a good thing. Another contradiction to progress that resulted from the Erie Canal was when people started holding the state government responsible for all their financial misfortunes. An additional contradiction to progress that the Erie Canal displayed was how many of its workers were either children, or men that lived lives that were intemperate and disrespectful to women. As American history students look back at the Erie Canal today, they generally only imagine how the canal was extraordinary for the residents of New York, but not all the issues and problems it also produced.
The Erie Canal is a waterway in New York that runs 363 miles from Albany, New York, on the Hudson River to Buffalo, New York, at Lake Erie, completing a navigable water route from the Atlantic Ocean to the Great Lakes. The canal contains 36 locks which allows a boat to go from one level of a water to another level lower by raising the water level in one section which lets the boat move from one lock to the next. By doing this, the Erie Canal makes a once non-accessible waterway a common mean of transportation for both goods and people.
Most of this region’s history meshes with the history of the Delmarva Peninsula. Originally, when the English colonies were established, it was and the original focal point at the time, Chesapeake Bay, were part of the Virginia colony. However, the term Eastern Shore became a more common term to use because of everything was to the east of the peninsula.
The Nile perch became an economic disaster. To store Nile perch properly they need to be smoked due to their high fat content. This caused extra firewood to be cut down and resulted into deforestation. Nile perch has disrupted the food web in Lake Victoria. The fish also contained high levels of salmonella which caused hundreds illnesses in the area. The fish left a impact on the fishing community. As the Nile perch population grew and other native fish population went down it affect certain fishermen. Since this fish was growing to such great sizes, more fishermen were needed, thus creating more jobs. Although it did help other get jobs it cost more to send fishermen out because of the size of boat needs to be crafted and rods and nets. All in all this fish had many consequences with its introduction. For all the negatives caused, is there anything trying to prevent these
Terrell (2015) states that the three inch delta smelt was decided to be in danger of going extinct a little more than twenty years ago. The U.S. Fish and Wildlife Service has claimed that systems used by farmers to retrieve water from the delta have added to the dropping number of delta smelt. Conservationists think it is necessary for people and farmers to take their water from sources other than the delta in order to preserve the characteristics of the delta (Terrell, 2015). Dr. Peter Moyle of UC Davis stated in an interview,“We have 80 fish species in California, like the delta smelt, that are in trouble” (Cited in Terrell, 2015, p.12). Moyle insists that it is more than just the three inch delta smelt that is in danger, it is at least seventy-nine other species that need protecting as well. As interviewed by Siegler (2015), senior water rights farmer, Rudy Mussi knows the importance of the delta and preserving it, not just so he can use its water on his fields, but also to keep it alive for the future. It has been suggested that water be taken out of the delta and moved to farmers in the lower portion of California who have junior water rights (Siegler, 2015). The delta cannot be overused because it is important that the ratio of saltwater to freshwater stays the same in order to preserve the fish population. In 2014 the excess water that came from the delta, the environment in which the fish live, added up to almost two hundred fifty billion gallons of water or enough for over six and a half million people each year (“Water wars”, 2015) While these people cannot easily access this water source, some farmers are able to use limited amounts of water if they farm on the delta, creating an issue between the junior water rights farmers
The Great Lakes provide almost half the water for the residents of Ontario. The Great Lakes also provides water to residents in Thunder Bay, Port Hope, Sault St Marie, Niagara and many parts of The United States to name a few. With 70% of the Earth covered in water only 0.1% of it is clean accessible drinking water. The Great Lakes plays a major role in helping to provide water for people that live near the American/Canadian border. However this resource is being mistreated. Water pollution is a growing problem in the Great Lakes. The Great Lakes is being contaminated by pollutants that are released for direct and indirect sources without proper treatment. This is causing the lake to being polluted with harmful chemicals. By identifying the cause we can take initiative to help conserve the Great Lakes and to help restore it to its natural beauty.