User talk:Jhn015

Welcome to Wikibooks, Jhn015!

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  Getting help   Made a mistake?   Goodies, tips and tricks Thanks. – Adrignola talk 13:32, 18 December 2010 (UTC)
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Horticulture/Nematodes
Below is content you added to this page. Earth's warming doesn't really make sense on a page about nematodes. Check out Climate Change instead. – Adrignola talk 13:32, 18 December 2010 (UTC)

The Earth has been warmed up by CO2 produced by human activities. The amount of CO2 has been increasing in our atmosphere. The scientists discover one way to decrease the concentration in atmosphere, which is ocean fertilization. In the article “Dis-crediting Ocean Fertilization,” the authors refer to the ocean fertilization with its affect on global ocean and the possibility of trading credit for carbon sequestration. The cycle of carbon is like the cycle of photosynthesis and aerobic metabolism; in which the CO2 produced by human is converted by phytoplankton on the surface ocean. The carbon sequestration and ocean fertilization help to lower the concentration of CO2 in the atmosphere but they also cause some problems about global ocean such as damaging the food webs. The articles talks about a big picture of ocean fertilization and the problems about it, but through the article, the authors seem to want to mention about the cost/benefit analysis of ocean fertilization. They want to say that “dis-crediting ocean fertilization.” The article comes up with the issues about fertilization and the global market. First of all, the authors introduce about the ocean fertilization and carbon sequestration. Carbon sequestration is long term storage of carbon in the ocean; the storing of CO2 concentration in atmosphere will reduce or slow. It includes the ocean fertilization. In ocean fertilization function, the phytoplankton is very essential; it is the single-celled organism known as microscopic marine plants that converts CO2 to organic carbon in the surface ocean. The phytoplankton uses CO2 for photosynthesis. The more amount of phytoplankton, the more CO2 is pulled from the atmosphere. Some of the organic carbon is generated to CO2 and some of them sink to the deep sea. The organic carbon is stored in the ocean. The ocean fertilization is also known with iron dusting. In the surface ocean, the phytoplankton biomass is small; it will be able to use the excess amount of N and P in the surface ocean because of the scarcity biologically available iron in these high-nutrient and low-chlorophyll (HNLC) regions. The dust from land contains big amount of iron for the sea. The scientists note that dust and CO2 have an inverse relationship: dust is high, CO2 is low. Or we can say that dust and CO2 converted have a direct proportional relation ship: when the dust is increasing, the resource of iron is big; the CO2 converted into the deep sea is more. So, we also can increase the amount of iron by fertilizing the iron for the sea; by this action we can decrease the CO2 in atmosphere but it also cause many problems for the ocean. Ocean fertilization helps to lower the atmospheric carbon dioxide and the average temperature by using thy photosynthesis of phytoplankton. The ocean fertilization can be used in large scale and small scale. In the small scale, the small amount of iron is added to water to cause the increasing phytoplankton productivity and massive growth in a short period of time such as a few days to weeks. The scientists show that the biomass of phytoplankton has been increased. So many groups of scientists are working separately to research for this process. In the large scale, ocean fertilization may cause to change the ecology of the oceans and the food webs. The ocean fertilization gives the benefit to decrease the atmospheric CO2 and average temperature but it also brings up two main problems such is change in the global ocean and the global market of trading credits for carbon sequestration. There is the existence of conflicting about ocean fertilization. The proponents think that the ocean fertilization is easily to control and it mimics nature. But these thoughts seem incorrect. First of all, the ocean is not easily controlled. We have only one ocean connected around the world. In addition, it does not mimic nature. In ocean fertilization, iron would be delivered to ecosystem at rates that do not mimic. To put ocean fertilization as a carbon sequestration option into perspective, there is two question to ask such as why CO2 increase in the atmosphere and how sequestration to mitigate this rise. These two questions seem related to the aerobic metabolism and the photosynthesis. There is two basic carbon cycles operate on Earth. In the first cycle, volcanic outgassing drives coupled to metamorphic weathering of silicate rocks, this cycle operates on time scales of millions of years. The second cycle is the oxidation of CO2 to organic matter and the oxidation of organic matter by respiration. This may cause to form fossil fuel. When human burns fossil fuel, the carbon is brought from the slow cycle back into the atmosphere. The ocean fertilization brings the benefit to help converting the CO2, but it also can be damaging the global ocean. Through the article, the authors are talking about the ocean fertilization but they want to make the point about the problem around its. They show the readers the real situation is that we are facing with the increasing of CO2 in the atmosphere. The ocean fertilization may help us to lower the CO2 but it also causes some effects on the global ocean. The ecology of ocean may be damage and the credits for carbon sequestered may be traded. The scientists keep researching about ocean fertilization and carbon sequestration, but we also facing with the carbon trading. The authors think that we should not trade it. This may cause more problems around the ocean fertilization. In this article, the authors hold the view that a cost/benefit analysis weighs heavier than the method of ocean fertilization. Because during the article, they do not show the readers how is the iron dusting helps to increase the growth massive and decrease the CO2. They also do not talk about how the ocean fertilization may cause the damage global ocean although they mention about it several times. This article generally introduces about ocean fertilization but does not talk deeply about the specific methods and processes. The ocean fertilization can help us to decrease the CO2 in the atmosphere, but it also cause many effects on the global ocean and the ecology. We need to use this function correctly and consequently. Ocean fertilization should never become eligible for carbon credits.