The most direct effect from trawl fishing is scraping of the seafloor which causes destruction of plants and other non-living things that live on the seafloor(Agardy). This also limits the potential food for other plant dwelling under water creatures. Cornella Dean came a... ... middle of paper ... ...nservationists perspective”. ices journal of marine science. 2000. web .
Similarly, another way fishing effects biodiversity and marine ecosystem function is being effected in-directly through possible fishing of species holding ecosystem engineer traits. So through increasing fishing pressures and the loss of particular fish species through disturbance, or bycatch that could be a possible ecosystem engineers, loss of such species can cause serious disturbance and influence both biodiversity and ecosystem function at a much faster rate (Coleman and Williams, 2002). Little research has been published on examples of marine vertebrate as ecosystem engineers, in spite there being many species that burrow or species that re-structure their habitats. An example of species that have had more in-depth research are the tilefish
Heal the Bay works on developing effective capping and removal plans to keep those toxins from spreading” (Heal the Bay). DDT is still highly concentrated in the South Bay area and still contaminating different species of fish. Even after more than 80 years DDT, a toxic insecticide, is still very concentrated and during upwellings, DDT particles come back up and continue to harm marine life. If humans are careless about what is thrown on the floor or sprayed on lawns, it can lead to disastrous affects when it comes to the condition of the ocean's ecosystems, and can endanger life itself leading to a problem that only we can mend. The ocean can serve man purposes things for many different people; as a school, a home, a park... ... middle of paper ... ...harges of Human-made Debris Comprise the Largest Source of Marine Debris in Oceans World-wide (nearly 80%)."
Because of this, there have been severe effects on many fish species. Even with regulations such as the law of the sea, which states that a country bordering the ocean has rights to the fishing areas within two hundred nautical miles of its shores, there are considerable abuses. In Pauly and Watson’s article, it states that the preservation of the country’s fisheries is up to the country itself. The country may also give out rights to other countries to fish its waters. When this occurs, there is a great chance the fleets from other countries will attempt to “garner as much fish as they can” (Pauly, par.
The oil makes its way into the fish’s system, which in turn damages the fish’s system, leading to death. Another type of pollution is sewage disposal pollution. Sewage disposal pollution is when the sewage water is not properly treated. Then, the sewage water makes its way into the ocean. Under treated sewage water contains many hazardous chemicals that bring negative effects to the contaminated area, which is the surface of the ocean.
I chose to discuss overfishing as my topic. The definition of overfishing is: form of overexploitation where fish stocks are reduced to below acceptable levels. Overfishing can be broken down to three main categories: overcapacity of vessels in the water, unsustainable fishing and food needs. Overfishing can occur in bodies of water of any shape and size. Overcapacity of vessels in the water is one main reason for overfishing.
Therefore alters the position of the freshwater and seawater interface. The reduction in groundwater head due to the extraction can produce an equivalent localized rising (up-coning) of the underlying saltwater wedge as well as a more regional shift in the position of the saltwater wedge landward(Custodio and Bruggeman 1987). Influence of groundwater extraction for seawater intrusion can be described briefly according to Figure 2.1 and Figure
This can greatly reduce fish population and drive species toward extinction. Fishing has provided the world with food and jobs that have remodeled Earth’s cultures and lifestyles. Fishing is practiced by local fishermen, commercial fishing rigs, and fishing hobbyists. However, when industrialization swept the world, fishing became an evident problem. Various nations all across the world decided to commercialize fishing altogether, which had caused a number of problems the world faces today.
There are many different ways in which people can get sick from ocean pollution. “Some human diseases can be acquired by recreational contact with polluted waters (swimming and diving); some microbial diseases affecting humans may acquired by eating raw or improperly cooked seafood tak... ... middle of paper ... ... not contain the highest concentration of mercury, it is the fish we tend to eat most. This brings up greater health threats for the humans. Although water is an effective solvent, most toxic pollution that humans generate eventually ends up in the ocean. After entering the marine environment, many chemical materials distillate in the deposit and the ocean surface layer.
The size of the patch is particularly unknown although there has been some estimates of its size including media reports that say, “Twice the size of the continental United States,” The Great Pacific Garbage Patch, (A.K.A. The Sea Life Killer) was formed simply by marine pollution and currents flowing through the ocean. We are the ones killing the ocean. The patch is an existence because of our selfish polluting habits. Every year cargo ships throw trash overboard and pollute the sea; therefore hurting marine habitats and to an extension, marine life.