Env/420 Ecology and Wildlife Risk Evaluation Analysis Essay example

Rain washes the pesticides that are used in our Australians households and then become run-off in drains and sewers. They then make their way into nearby water bodies, wether that be creeks, rivers or even oceans and settle within the soil by sticking to small particles, including tiny living organisms like phytoplankton (M. Barwick, 2003, pp. 471-502). Small fish consume these tiny organisms, which may then be eaten by a larger organism and this continues until the top order consumer is reached. The concentration that first began in the phytoplankton and has multiplied sufficiently as it moves along the food chain. The amount of the pesticide has reached a highly toxic level in the top order predator, whether that is birds or even humans. As a result of the biomagnification of pesticides and other chemical the marine environment and the organisms that live within it are heavily affected. The build up of heavy metals, for example, it interferes with the formation of red blood cells, creates liver and kidney implications and forms reproductive defects in many organisms. This hinders an organism’s ability to survive and reproduce and can create a decline in species

The Everglades used to be a very beautiful tourist attraction, but have been largely affected by the existence of pesticides. However, the majority of pesticides is not specifically targeting the pest only but they also affect non-target plants and animals during their application. The Effect of pesticide runoffs on the Everglades is destroying one Florida’s major tourist attractions due to the cultivation of sugar cane just to mention one of those responsible and creates a loss of natural habitat, water pollution, and threatens existence of wildlife. Many pesticides are not easily degradable; they persist in soil, leach to groundwater and surface water and contaminate wide environment.

The purpose of this course is to provide the fundamental knowledge of the effects of environmental chemicals on living systems, and the toxic responses of the human and plant systems. Students will discuss risk, ethics, and social responsibility with regard to environmental toxicology.

Pesticides and preservatives are not only harmful to human beings, but they are also harmful to our environment and ecosystems. Pesticides used in organic farming may run-off and contaminate nearby bodies of water. If enough contaminated run-off from pesticides and artificial fertilizers get into water, it is able to poison animals and fish that live there. According to Raloff, recent studies have demonstrated that exposure to hormones has a substantial effect on the gender and reproductive capacity of fish, throwing off the natural cycle, (1). This is not only harmful to the animals that live there, but if enough fish are dying because of poisoned run-off, the fish industry could suffer and it will affect humans as well. The same chemicals that poison bodies of water could seep into our groundwater and affect the well water we drink and use daily. This does not happen with organic farming, because no chemicals are ever sprayed on the fields and there is much more run off because of tilling practices.

It has been a prime location for studies to be conducted by health organizations to see if there are any links to the pesticide usage occurring along with people living in the vicinity of where it is being used. ARTICLE PESTICDES STUDY (Kehoe) The study correlates a link between certain chemicals that are used in the manufacturing of pesticides and these chemical ORGANOCHLORINES to Alzheimer’s disease along with many autism related defects between children. Children are who we try to keep safe as they are the young and will be our future. Pregnant women living in pesticide applied areas were more likely to have a child with birth defects as the chemicals are absorbed through the air and can reach the fetus via the bloodstream. These are also the most susceptible to these chemicals being used by farmers and the by the produce they

The higher the trophic level, the higher the concentration of toxins in the species. There may be a tiny bit of pesticide in a plant which is then eaten by a insect which is then eaten by a shrew. The shrew then gets more toxins, then giving the owl which is at the top of the food web the most toxins causing it to become sick and die. Overall, these pesticides in ecosystems can disturb food webs, ecosystems, and hurt

Studies have shown that near shore, and in rives tributaries to the Great Lakes the PPCPs levels have a higher risk quotient. The risk quotient being the ratio of maximum measured environmentally concentration to the predicted no-effect concentration of the pollutant. Using this ratio, 38 compounds were detected from effluent or Lake Michigan samples with four compounds being detected at levels greater than 50% frequency. These compounds found at all of the sampling sites in Lake Michigan and the Milwaukee Harbor are: metformin (100%), caffeine (97.6%), sulfamethoxazole (83.3%), and triclosan (71.4%). The mean and maximum levels from the samples can be found in Table 2, along with the minimum detection limit, minimum quantification limit, and maximum value found in the method

The exponential growth of human population, caused an unprecedented problem for the global ecosystem. (Carolina EcoKits, 2012) The increase in pollution brought upon great fear and concern about what types of contaminants were in the foods and water supply for citizens. In 1977, the Clean Water Act was passed, the act ensured that any release of pollutants at toxic levels into any water source was forbidden. (Carolina EcoKits, 2012) It allowed for the Environmental Protection Agency (EPA) to set guidelines and standards for how pollutants were emptied in navigable waters. (Carolina EcoKits, 2012)

This article talks about what a pesticide is and how it affects people. This is relevant to my research topic because I will be using pesticides on plants to measure the growth. In order to do this, I will need to know what a pesticide is and what it does. A unique feature of this article is that it includes videos explaining the topic, and links at the bottom of the page to look further into pesticides. A strength is that the article is very specific and on-point. However, it doesn't show much more than just what a pesticide is. There is no bias in this source.

Often, toxic substances are being drained into the air, waterways, and undergrounds wells. According to the report by Environmental Protection Agency (EPA), over 60 million pounds of deadly chemicals are produced by industries in Florida. Notably, Florida’s water has been suffering mercury contamination until the state’s department of migration issues a circular regularly for regulations of eating freshwater fish in the region (Florida Fish and Wildlife Conservation Commission). In fact, such metals emanate from coal combustion’s emissions which run into water bodies. Not to mention, pesticides and herbicides utilized by government and homeowners pollute the environment (Florida Fish and Wildlife Conservation Commission). Indeed, all chemicals released into the atmosphere find themselves in rivers.

Although the use of pesticides, chemical agents, and herbicides are used agriculturally on multiple sources, they can become a risk factor in how they alter the ecology of the land, foliage, and animals. One such chemical agent was used excessively (20,000,000 gallons) as the favored “treatment” for defoliation in Vietnam during the Vietnam War. It was sprayed over several areas which exposed soldiers, Vietnamese, and machinery to its potentially harmful chemical composition. This herbicide known as Agent Orange or TCDD contained a plethora of phenoxy herbicides marked by multiple dioxy chemical impurities. Agent Orange, after the war, has been studied and linked to heightening risk to various forms of cancer, development of autoimmune disease,

The chemical pesticides used in farming affect the quality of water because of run off which then go into lakes or rivers. In chapter four, Carson concentrates on the water pollution caused by pesticides. The pollution can be unsafe for use and causes fish to die. An example used is a study done by the United States Fish and Wildlife Service in 1960 that showed that “our waters have become almost universally contaminated with insecticides.” (pg.41) The pesticides are especially threatening to groundwater which is an important source of drinking water for humans. Consequently, the chemicals in pesticides can cause cancer and other harm effects on our health. Another issue is that the pesticides in water and can mix with other chemicals and become a new chemical. Therefore, it can lead to the creation of an unknown chemical with harmful

The chemicals that are sprayed on the ground, even household weed killers, have a tendency to wash into local streams and rivers with the first rain. This has caused many incidents of fish, numerous miles down a river, to be found dead due to the toxins in the water. Carson states that the best way to eliminate a pest problem is to use natural predators, which are non-toxic, and a better long-term solution then pesticides, since many pests will become immune to most chemicals.

Up until recently, the Environmental Protection Agency along with the Texas government has approved of a pesticide, classified as a warfarin, to combat the invasion of wild hogs. By introducing an anthropogenic compound into an open system, it has the capabilities to migrate beyond the environment and affect numerous non target species. Great concern has been made adherent by individuals who make a living and hunt in the region. They are concerned not only for the wild hogs, but also for the ecosystem. Questions such as, what are the possibilities of a non-target species consuming the pesticide? How will it be distributed? What effect does it have on humans? The symptoms? The answers to these questions are currently being researched

One concern about pesticides and herbicide usage is the amount of residues left on the end product of crops sprayed with the chemicals, and their effects on human health. (Williamson, 2007, p. 184). However, these effects are closely tested and levels are strictly regulated to ensure there is no danger from possible pesticide residues. Since 1910, many rules, regulations, and agencies have been formed to monitor the safety of the pesticides and herbicides used in conventional farming. These chemicals must meet specific safety standards in order to be registered for use, and regulations on levels of each product safe for use are also put in place. (Tafel et al.,2007, p.184). All pesticides are rigorously examined to ensure they have no significant effects on human health, or the environment. The residues in the food chain are closely monitored, and regularly tested, to ensure they are below legal limits. In a recent survey of residues