About 13.5% of known causes of global warming come from Agriculture (PCC 2007) and the contribution from aquaculture production as a result of excess and undigested nutrients is sizeable and should be checked.
Fish when fed use the nutrient given for maintance, growth and for production purposes but beyond the need of the fish, the excess nutrients are voided, depleting water quality parameters, increasing cost of production, ammonia concentration and invariably have ecological consequences.
Fish obtain energy from protein and non protein sources but the use of protein energy is wasteful from nutritional, economic, and ecological points of view (Manjappa et al 2002). Energy utilization and metabolism from carbohydrate or lipid sources in fish varies among species, age group, enzyme profile composition of the fish and the source or origin of the nutrient and a delicate balance exists among the different nutrients given to fish in term of the protein /energy ratio and the ability of the fish to efficiently utilise nutrients from these sources (Manjappa et al 2002, Peres and Oliva-Tees...
Humans are damaging the planet to live comfortably, we must change the way food is distributed worldwide, support local farmers and switch to a healthier diet in order to stop global warming. The current global has been getting better for us humans over the years, from eating bread and eggs 3 times a day in the XV century, now we can eat better than the kings of those times, however the much of the food in not healthy and the global food system still fails in getting food to every individual in the planet and in addition it contributes to the destruction of our world. Ms. Anna Lappe explains how the food system contributes to around 1/3 of the global warming issue in her essay “The Climate Crisis at the End of Our Fork”, while a group of Plos one explains the issues about the export and import of food growth over the last 50 years in the
researchers are suggesting a more “judicious” approach in utilizing “limited biological raw materials” such as fish products (De Silva & Turchini, 2008). The challenges unique to the pet food industry is that, “pet food professionals need not only consider the total amount of protein to target, but also the quality, bioavailability, and ingredient source as well” when designing their formulas (Swanson, Carter, Yount, Aretz, & Buff, 2013). Research also indicates a need to further study the impact of the pet food industry on the fish market so that any prevalent issues are brought to the light, discussed and resolved instead of ignored (De Silva & Turchini,
Many consumers today are confused about the controversy about fish and its health effects. Researchers have discovered that fish contains methyl mercury, polychlorinated biphenyls (PCB), and dioxins that may put one’s health at risk (“Harvard College”). The industrial processes cause mercury to be released into the air, then the chemical ends up in the lakes. Therefore, the contaminants come from bacteria that live in lakes that are then absorbed in species. When people consume fish, they are also taking in bacteria that came from unspecialized lakes indirectly through fish consumption. Although people could be harmed by eating contaminated fish, a diet that includes fish can also benefit the body. Fish has become especially popular because the omega-3 fatty acids it contains support cardiovascular health. Omega-3 is essential to the development of brain functions and normal growth. The intake of safe amounts of fish can decrease the chances of stroke, arthritis, and chronic diseases. Although fish contains mercury and dioxins that can damage nerves in humans, the trade-off benefit of the intake of omega-3 from fish can outweigh the risks.
Some studies have found “that atmospheric CO2 concentration is approximately 383 parts per million by volume (ppmv), a level not seen in at least 650,000 years, and it is projected to increase by 0.5% per year throughout the 21st century.” (Guinotte) “This is because…the ocean absorbs about a third of fossil fuel emissions, but this amount is likely to increase to 90% in the future.” (Bralower) As a result, “the chemistry of the world's oceans is changing at a rate not seen for 65 million years, with far-reaching implications for marine biodiversity and food security, according to a new United Nations study...” (Knight) “…This change is cause for serious concern [for] many marine organisms…, [because they] may not be able to adapt quickly enough to survive these changes.” (Guinotte)
There are many impacts that fishing and land animal farming have on the ocean, which are detrimental to ocean ecosystems as well as many other aspects of the environment. Overfishing, killing fish at a much quicker rate than the fish can repopulate, is one major problem. Three-fourths of the world’s fisheries are either fully exploited, overexploited, or depleted (Cowspiracy). Researchers have estimated an end of all viable fisheries by 2018 if the current trends of fishing continue (Mason). According to the Monterey Bay Seafood Watch, hundreds of thousands of animals die every year as bycatch, with one of the worst offenders being shrimp fisheries, catching up to six pounds of bycatch per pound of shrimp. Endangered species are also caught, including predators which are important in keeping the balance in ocean ecosystems (Smith). While many organizations such as the Monterey Bay Aquarium Seafood Watch recommend consumers to eat more “sustainable” fish, this will not stop the massive environmental impacts. Sustainable fishing for one does not account for the natural flux in the population of species of fish; what is considered a sustainable amount of fish to harvest one year may deplete the fishery in another year (Smith). Sustainable fish also are becoming even less sustainable as companies that label sustainable fish must find more For example, after Wal-Mart pledged to selling Marine Stewardship
During the 20th century both air and sea temperature has increased and causing several problems. The increase in temperature has caused damages to our eco system. In some countries temperature has increased by a few degrees. In winter, in places where it was cold, now the temperatures has increased and even the sea temperatures have increased, which is melting the Iceberg and destroying the marine life. Scientists projected that if emissions of heat-trapping carbon emission aren’t reduced, average surface temperature could increased 3 to 10 degrees Fahrenheit by the end the century. A good example is that in some Europeans countries the...
90 percent of the effects of global warming are attributed to rising temperatures and heat. This heat tends to affect our oceans due to the ...
Overfishing is the most major problem related to oceans, but it is also the most overlooked. Fishing has been going on for thousands of years, and fish have always been seen as a renewable resource, that would replenish itself forever for our benefit. But around the world there is evidence that fish are not recove...
Bibliography: Confino, J. (2014). Asda: 95% of our fresh produce is already at risk from climate change. [Online] the Guardian. Available at: http://www.theguardian.com/sustainable-business/asda-food-waste-risk-climate-change [Accessed 23 Jan. 2015].
The planet Earth has been around for a really long time. Trees covered the grounds and all kinds of animals roamed the land. But this was before humans began to burn fossil fuels, before land was starting to be cleared, and before the climate began to change. The change in climate on planet Earth is called ‘global warming’. Some people do not believe that this phenomenon is really happening. Based on the facts, it really is happening. The surface of the Earth is warming rapidly and humans are a main cause. This paper is about global warming, the causes of it, the changes in climate on Earth, and the potential dangers of it.
There needs to be a reduction if not extinction with the increasing amounts of carbon dioxide, methane, chlorofluorocarbons (CFCs), hydrofluorocarbons (HFCs), per-fluorocarbons (PFCs) and nitrous oxide into the atmosphere because it is directly affecting global warming. The combustion of fossil fuels and greenhouse emissions mainly contribute to the increase of these gases. The longer we go without solving this global problem the more conflicts we will have in the future. Although global warming does make the earth warmer there is more to worry about than heating to death. Major concerns revolve around effects on agriculture, water resources, ocean level and coastal regions, and disease. Many scientists and experimenters still disagree with global warming using excuses such as ‘primitive’ climate models, which predict global warming trends, can not accurately simulate the Earth; it is too difficult because there are thousands of variables to consider. With the issue of global warming alternative sources of energy are looked for. “Data indicates that hydrogen is [the] only suitable future fuel.” (Williams, 102). Many scientists agree, but how long will it take for us to get there?
As Robert Frost once said, “ Some say the world will end in fire, some say in ice. From what I’ve tasted of desire I hold with those who favor fire.” This excerpt can relate to the idea of global warming. Global warming can be defined as an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. During the past 10,000 years the earth has been in an ever-growing cycle that has significantly changed the climate. These changes are becoming more prevalent in our world today in the past 150 years. Scientists have been analyzing the causes and effects of the greenhouse effect and many other issues that global warming has presented. As John Houghton states in his book, Global Warming the Complete Briefing, on page 2 “ The 1980s and 1990s were unusually warm. Globally speaking, the decades have been the warmest since accurate records began somewhat over a hundred years ago and these unusually warm years are continuing into the twenty-first century.” There are countless records that show that our world as a whole is getting warmer, and the facts cannot be disputed. Everyone in the world today is experiencing the effects of global warming. These effects might be small now, but if we don’t protect our planet now then the consequences will greatly be increased.
Bibliography Fiala, Nathan. "How Meat Contributes to Global Warming." The American Scientific Magazine. Journal Article, 4 Feb. 2009.
Climate change has always been a problem in past and now during our days. Over the years we as a globe has been able to evolve from all the changes with temperature to changes in scenery. Climate change has always been a big factor to changes on earth. Scientist have been studying for years and years with ways to prevent or help slow down the effects of climate change. Climate change has been evolving for so long that it has a long term effect on earth with many ways to help prevent it from getting worse but with that being said that requires a lot of effort from a lot of people on this planet.
The Land of the Rising Sun, Japan, is an island located in the Pacific Ring of Fire. Surrounded by water, this archipelago is nearly 71% mountainous. The climate of Japan is fairly consistent creating a long growing season. Because of these specific geographic features, Japan’s culture has been impacted greatly. One of the largest sources of protein, for the Japanese, is fish. This source of protein is gained through the help of specific geographic features. As well as their diet, their source of relaxation and tranquility is made possible. Finally, a large growing season is promising as well.