World Population Essay,Population And Its Effects On The World
WebOpen Document. According to the Population Division of the United Nations, world population reached 6, million in and will continue growing by more than 76 WebHe explains in his An Essay on the Principle of Population, that population growth generally preceded expansion of the population’s resources, in particular the primary WebFeb 2, · The population is the total number of human beings living in a city or the country. It allows knowing how much resources are required by this population to fulfil WebAs a result, world population entered the twentieth century with approximately billion people and left the century with billion. In the next 50 years the annual growth will WebThe world's population has exceeded billion and continues to increase about another 76 million each year. The three most populated countries are China, India, and the ... read more
Population is defined as the number of inhabitants in a particular area. Currently on the face of the earth there are approximately 7. Among the most important of these needs is the drastically increasing demand to feed everyone. the human population Globalization Globalization has effected the environment due to human productivity; cars, technology, mining, farming and the advancements of different products. Globalization has effected culture due to the diffusion of ideas, beliefs and values around the world extending the social relationships with people around the world. Globalization has also effected the economy in the assimilation and cooperation of local, regional and national economies around the world. They are fertility rates, mortality rates life expectancy , the initial age profile of the population whether it is comparatively old or relatively young to begin with , migration, and now religion, where focus is placed on migrating to or from a particular faction.
The forces behind population change Population Change:A view at Growth Fertility. Think of the world population aging Abstract: Population aging is one of the world 's population development tendency. Of the world 's population aging and the aging of the population in developed countries the same time. The aging of the population have is social progress and economic development. This paper will analysis about Chinese and American population ageing. But, the aging of the population has led to the burden of the working population growing problems. other necessities Kuo Though most people who read this paper will not encounter these problems, they happen all over the world Cover The world population has almost doubled since and is currently growing at a rate of more than 80 million people every year Ehrlich and Ehrlich This is causing the climate to change and unemployment to increase.
The world is slowly depleting its. The truth is that; there are real issues that are contributing to the expansion of population, one being food supplies. It means that, there will be an addition of 2. The datum that the population world-wide was 2. history, the development of the world population directly depends on the mode of social production, especially the level of development of productive forces. In the history, mankind got the tremendous progress in productivity often with the population rapid develop. The number of the population maintain in a state of high. conclusion that as the world population increases the global food production must as well.
The current meat practices in the U. S are unsustainable in terms of being able to meet the future demands of global society Dahlen et al. Although livestock practices have changed dramatically over time to make production more efficient it has negative impacts on the environment and human health. Fortunately sustainable solutions do exist. Others livestock farmers around the world are implementing sustainable. ever wondered what the answer to world problems is? World population control is one option, but it is not a good one. Some say that it would help improve life, and would help bring balance to the world. However, I believe that population control would not truly help anyone.
World population control is not the answer to world problems, for it would take away human life, the right to have kids, and in the long run would not help any living thing. The idea of population control started out many years. All residents of a specific area, city, or country comprise the total population. As everyone knows, people are born, grow, live, multiply, and make history, since the first living things appeared on the earth. Every two years, the United Nations makes an assessment of past, present and future populations in all countries and publishes their discoveries and predictions. Therefore, with this evaluation, they can report. The current world 's population is approximately seven billion people, and the amount of time that it takes for the population to increase by another billion is decreasing with each billion.
According to the World Population Data sheet, there will be about eight billion people by the year , and this is due to its continuation of growth Southwick A clear understanding of the causes and what might possibly happen is the first step to dealing with the population crisis. The world 's human. From the 3. This enormous increase is due to the already massive size of the population. Most of this growth will occur in the next three decades. Between and Asia 's population will grow by 1. China is the world 's largest population, estimated to be around 1.
It grows. Many people believe that today the world 's population is already too large for everyone to live comfortably. Let us brainstorm for a while. According to the UN, we are living in the era of the most intense growth of urbanization. Right now, when the level of urbanization is quite high, the remains of the rural population of the planet dramatically swept into the city. Everyone knows that the urban life style helps to reduce the birth rate to a subthreshold level. This means that neither sharp jump. Activity 1: The World Population Data Sheet at a Glance A. Find answers to the following questions using the current World Population Data Sheet. Use your blank world maps to locate, shade, and label the countries identified in the questions that follow.
What is the current population of the world? The current population is 7. Rank, in descending order, the 10 countries with the largest population. China, India, United States, Indonesia, Brazil, Pakistan, Nigeria, Bangladesh, Russia. Essay Topics Writing. Singapore is small and changes in birth rates affect the population quite quickly. Singapore has a policy of encouraging two children per family by imposing financial penalties on families with more than two children. Japan with ,, people and among the lowest death and infant-mortality rates in the world today has an interesting population history. Until the early s except for a nick in the male 30—45 age groups, caused by deaths during the Second World War, the pyramid resembled that of any other traditionally agricultural country.
The case of Japan illustrates the time-lag in changes in population structure, for though industrial development began in the late nineteenth century, it took fifty years for the effect to be felt in the population structure. Population structure in Japan now follows the European pattern. Migration can have profound effects on population structure. This relates to Australia but in the s and s the U. Immigration into these countries is much more restricted today. Immigrants are usually young people who have their families in their new country, encouraged by the better standards of living they find there. The immigrants themselves swell the population in the 30—45 age groups while their children help to increase the proportion of people under When the rate of immigration slows down the population becomes more stable.
Immigration of large numbers of people of a different racial group often produces a temporary imbalance both in age and sex structure, because the bulk of immigrants are men, and also in racial composition. An age, sex pyramid divided by race for Peninsular Malaysia in illustrates this. Men outnumber women in the middle age groups while a time lag between the bulk of Chinese and the bulk of Indian immigration is also seen. Indian women came into the country mainly after the men. At this stage immigrants were not settling down to have families so the percentage of young Chinese and Indians in the population was smaller than that of Malays. Migration not only affects the population structure of the receiving countries, but also that of the home countries of emigrants.
Many young people left and the birth rate was drastically reduced. This migration has now slowed down and the population is beginning to assume a more normal pattern. The sex structure of population is also important. The proportion of men to women affects the rate of population growth through the net reproduction ratio, which measures the rate at which the present generation of women is being replaced by daughters who will in turn have children. The calculation of this ratio allows forecasts of future population trends to be made. The numbers of men and women are usually fairly even but are sometimes out of balance after such events as wars, when more men than women are killed.
The numbers are usually uneven in the higher age groups because women tend to live longer than men. Underdeveloped countries do not have a monopoly of population problems, though in general their problems are more widespread and more difficult to solve. It is, however, worthwhile to note the problems of industrial and urbanized societies, some of which are becoming increasingly serious. As the birth rate is low the proportion of younger people in the population is relatively small and the low death rate and high life expectancy mean that there is an ever-increasing proportion of older people in the population.
Many retire from active work in their sixties and then become dependent on the working population. Provision of pensions and other facilities, e. extra health services, for elderly people pose financial problems. As educational standards improve children remain longer at school and join the work force later. This, combined with the low birth rate, means that the labour force expands only slowly while industrial and other employment opportunities continue to multiply. Despite a high degree of mechanization in most industries many countries are short of workers. In Europe for instance workers migrate from Italy, Greece, Yugoslavia and Turkey which are somewhat overpopulated, to Germany and Switzerland where there are insufficient workers.
Another problem is that the work force is generally well-educated and skilled and there is a shortage of unskilled workers. Because the majority of workers are skilled and the work force is relatively small wages are high. Towns provide amenities such as shops, entertainment and better social services, which cannot be matched in country districts, and employment is usually easier to find in urban areas. For this reason there is a steady movement of people from the country to the towns so that in some areas farms are even abandoned. The fewer people live in the country the less economic it is to provide services and the greater becomes the disparity between town and country.
Where rural depopulation is accompanied by mechanization and rationalization of farming and thus a rise in income, an improvement may result, but often the country districts suffer a decline in living standards. As towns expand, the pressure on transport, water supplies, sewage and refuse disposal grows and creates problems. Smoke and chemical effluents from factories produce air and water pollution. Traffic congestion and noise are other problems. Tensions created by urban life lead to a far higher incidence of mental illness than in underdeveloped countries, and pollution, particularly fumes from motor vehicles, also has physical health hazards.
Urban sprawl is another problem; the expanding towns engulf land which would otherwise be suitable for agriculture and thus reduce self-sufficiency in many countries. Underdeveloped and advanced countries have some problems in common, for most countries are unevenly developed. Most advanced countries have areas where agriculture or industry could be improved or where the population is too large. Similarly the underdeveloped countries all have large towns where the problems are similar to those of urbanized societies everywhere. It is also important to bear in mind the differences between underdeveloped countries.
Some have a much better resource base or a smaller population, and these, such as Argentina, Mexico and Malaysia, are much more likely to be able to overcome their problems than countries with few resources and a large population with fixed traditional ideas. Essay 6. Moderately Populated Areas of the World: Around the margins of sparsely-populated areas the density of population gradually increases; only occasionally are low and high densities found side by side with no transition zone. The sharpest changes occur between the irrigated and non-irrigated areas in the deserts, the most notable example being the contrast between the Nile Valley and the surrounding desert. The moderately peopled regions of the world are usually those where agriculture is the dominant occupation.
The climate, relief and soil are thus the main factors affecting population density; the more favourable these conditions are, the more people the land can support. But human and economic factors such as communications and accessibility to markets also affect population patterns. The savanna areas have a very seasonal climate with summer rainfall and a natural vegetation of grass and scattered trees which are adapted to withstand the drought of the winter. Various types of extensive farming are practised. Ranching is important in the sertao of Brazil, in northern Australia and in many parts of Africa. Shifting cultivation provides food crops for the scattered populations in Brazil and Africa though some areas have been developed for the cultivation of cash crops, such as groundnuts, tobacco, sisal or pyrethrum, either on large estates or smallholdings.
None of these occupations supports a dense population. In temperate continental areas there are broad stretches of grassland where the climate is relatively dry and most of the rain falls in summer. Temperatures are high in summer and very low in winter. The growing season is long enough for cereal cultivation but where there is insufficient moisture ranching is the dominant occupation. The largest grassland areas are in North America the Prairies , U. the Steppes , and Argentina the Pampas , but parts of interior Australia and South Africa have similar conditions. The grasslands coincide with vast plains or with regions of undulating terrain and are thus ideal for large-scale, mechanized cereal cultivation, but neither this nor ranching supports a large population.
Both savannas and temperate grasslands are continental in location and lack of communications and remoteness have helped to keep the population relatively small. The best developed areas are those with good lines of transport, e. Settlement has often followed the building of railways, such as the Trans-Siberian or the Canadian Pacific. While the interiors of tropical countries are often not well developed, the more accessible tropical regions have been cleared of forest and are devoted to agriculture. Both food crops such as rice and maize and cash crops such as rubber, oil palm, cocoa and sugar-cane are important in the lowlands, while tea and coffee are grown in the highlands.
Coastal areas are preferred since accessibility to the sea is an advantage to growers of these dominantly export crops. Many areas were cleared only in the nineteenth century and thus populations are not as large as those found in tropical countries with a long agricultural tradition. Temperate coast- lands have a moderate climate, with an adequate rain- fall and no great extremes of temperature, so that a very wide range of crops can be grown. Livestock also form an important part of the agricultural economy. Farming is well established and although farms are usually small in size, yields per hectare are high.
As a result the land can support fairly large numbers of people, and such areas as central and eastern Europe, central, southern and north-western U. Both tropical and temperate coastlands are more densely peopled than the continental interiors, partly because the climate is more favourable and partly because communications and markets are better. The larger the population the faster it will grow and the greater will be the market for agricultural and other goods. This in turn helps to promote improvements in farming practices and the production of larger crops. The more productive the land the more people it can support. Areas of moderate population gradually merge into more densely settled areas where intensive farming and the development of industry allow far more people to get a living from the land.
Essay 7. Densely Populated Areas of the World : Only limited areas of the world have high densities of population and these have all the advantages of good climatic, soil and relief conditions, as well as resources of fuel and industrial raw materials. The largest populations also grow most rapidly so that, unless there is rapid out-migration, people tend to concentrate in relatively restricted areas. The development of urban areas with many people, markets, shops, entertainment and other facilities tend to attract people from the surrounding areas. Densely populated regions fall into two main categories, those dependent mostly on agriculture and those dependent mostly on industry:. Some of the most densely peopled parts of the world rely basically on agriculture.
Industry has been developed in these areas and there are many large towns but a large proportion of the population still lives and works on the land. These areas include the Nile Valley of Egypt, the river valleys and plains of mainland China, the Indo-Gangetic plain and western coastal plain of the Indian subcontinent, and the island of Java in Indonesia. In these areas as many as 1,, people may live on a square kilometre 3,, per square mile of land. This is only possible because climate, relief, soil and water supply in the regions are favourable. Egypt has a Mediterranean type of climate which is suitable for many crops and the Nile waters have been harnessed to irrigate the fields. In India, too, the fertile alluvial soils of the plains, the availability of water for irrigation in the dry season, the regular rhythm of the monsoons and high temperatures all the year round, allow several crops to be grown each year.
In China warm summers, monsoon rainfall, irrigation, constant manuring of the soil, and the careful management of the land, all contribute to support a huge rural population. Java has a warm climate, heavy rainfall and rich volcanic soils. These areas were always advantageous for settlement. The Nile, Indus and Huang He Hwang Ho valleys were the centres of ancient civilizations and as agriculture developed large settled populations were built up. Numbers have continued to grow ever since but farming techniques have not been modernized at the same rate.
As the capacity of the land to provide food has been outstripped the people have become poorer. Farms are very small—often not more than half a hectare and although a wide variety of cash crops is grown the cultivation of food crops is more important. Rice is the main food crop and is supplemented by vegetables; poultry are kept, and buffaloes, sheep and goats are important in Egypt, Indonesia and India, and pigs in China. The pressure on land is continually increasing as more and more people must be fed from the same plot, and such large populations can only live off the land because the people are willing to subsist on a relatively meagre diet of little nutritional value. Overcrowding thus leads to poverty and a low standard of living which in turn makes modernization difficult because people cannot afford to buy machinery or fertilizers.
Moreover the farms are often too small to use modern techniques efficiently. Farming could be done much more effectively by fewer people working larger plots of land but there is as yet no alternative source of employment in the towns of these countries. Large-scale industry has only recently been established and may never be able to compensate for population problems which have existed for so long. The densely populated areas dependent on industry and urban development are Western Europe, north-eastern U. These areas are less extensive than densely peopled agricultural areas and are radically different, for most of the people live in large towns and few in the country. The food for these large centres of population is not produced locally but drawn from all over the world, so they are much more dependent on industry, trade and commerce.
Unlike densely peopled agricultural areas they have a generally high standard of living and rather than getting poorer they are becoming richer as new techniques and ideas create greater employment opportunities. However problems of traffic, noise, pollution, disposal of waste and provision of water supplies become greater as towns expand, and as the standard of living improves, health, education, recreation and other amenities must be provided at greater and greater cost. Large urban centres attract ever larger populations by in-migration, for while improved agricultural methods mean that fewer people are needed in the country, employment opportunities are much greater in the cities.
The three areas of high urban population differ from one another for historical reasons. The Industrial Revolution first took place in Britain where industrialization coincided with a phase of rural depopulation, caused by changes in land tenure, which provided workers for the factories in the towns. At this time too, medical advances brought down the death rate and thus the population began to expand rapidly so that a large urban labour force was available throughout the nineteenth century. Mineral resources such as coal and iron were also available and trading relationships with other countries were already well-established so that raw materials could be obtained and goods marketed all over the world. Industrialization spread to Belgium, northern France and later to Germany, but in these countries agricultural reform did not take place as early as in England and there is still a relatively large agricultural population.
The industrial district of the U. is an offshoot of the European region. Immigrants from Europe brought their knowledge and skill in industry to the new country, where the huge resources of coal, oil, iron, copper and many other raw materials allowed industry to develop rapidly. Large industrial towns and cities were already established before the whole country was settled. Japan was traditionally an agricultural nation with a large rural population similar to that of China, and had little contact with other countries. In the late nineteenth century, however, this isolation was broken down and the advantages of industry were realized. Many circumstances aided the growth of Japanese industry and its already large population was transformed from an agricultural to an urban one.
In this Japan differs from other industrial regions where the growth of population occurred at the same time as the growth of industry. As a result the population pattern in Japan is different; 13 per cent of the people still depend on agriculture as compared with only 2 per cent in Britain for example. Essay 8. Problems of Overpopulation across the World : There are underdeveloped countries where the level of technological development inhibits agricultural efficiency and the establishment of industry even though the resources exist in the country. Such countries have additional problems if they are overpopulated like China or India. In these countries the modern industrial economy has been grafted on to a traditional agricultural one and the two have not yet been properly balanced.
Another group of countries which are underdeveloped are those which lack population, although they sometimes have advanced societies and command modern technological methods. These countries, such as Brazil, Colombia, Peru, Zaire, or Asiatic U. Their problems are often accentuated by adverse climatic conditions. Population problems are thus among the basic difficulties of underdeveloped countries but those of overpopulation are of course different from those of under-population. Large populations increase rapidly and in most underdeveloped countries the birth rate is high and family planning is not practiced on a large scale. This means that there is a large proportion of young people in the population who are dependent on the relatively small working section of the population.
At the same time the large number of young people puts extra strain on social services, especially education. In many underdeveloped countries industry is not well-established and there are few employment opportunities for unskilled workers. Unemployment is therefore high. On the other hand there is often a shortage of skilled workers because there are few facilities for training. In overpopulated rural areas unemployment or under-employment is also a major problem; people migrate to the towns where it is often even more difficult to find work. Moreover the towns become overcrowded, making living conditions poorer. The standard of living in overpopulated countries is low and housing conditions are often poor and overcrowded. Standards of hygiene and nutrition are also low which leads to health problems such as malnutrition, and the spread of diseases.
Prevention and cure of disease is hampered by insanitary conditions, by the ignorance of the people, by the lack of financial resources and often by the sheer numbers of people involved. Traditional methods of agriculture, outdated or inadequate equipment, lack of financial resources for improving farms, the non-use of fertilizer and the non-use or misuse of marginal agricultural land, such as highlands, may all help to keep agricultural production much lower than its potential. Difficulties of rationalizing farming techniques and reforming land tenure to give larger, more economic farms are aggravated by lack of capital and by traditional attitudes of the farmers who are often slow to accept new ideas.
In most underdeveloped countries industry is only slowly becoming established. Apart from lack of local capital which makes the actual exploitation of resources or setting- up of factories difficult, the population factors are important. The labour force, though large in number is generally unskilled and has no background of industrial employment. Similarly, although the large population should provide a good market for the finished goods, the majority of the people are poor and cannot afford to buy the products. To produce goods cheaply for a small market mechanized manufacture is most economical but this employs very few workers and does not help the employment situation.
Traditional or religious attitudes may militate against change or may make conditions worse. Birth-control is forbidden by the Catholic Church, for instance, and caste restrictions on occupations in India also help to slow down development. Less important is the conservatism of rural people regarding farming methods and the introduction of new crops. This kind of attitude can be removed by education in a way that religious beliefs cannot. Essay 9. Problems of Under-Population across the World : i Uneven Distribution of Population : Average population densities for under-populated countries are low, and in many areas there are practically no people at all.
Small populations increase slowly, even though birth rates are often high. Immigration is an important source of people but it is usually to the towns rather than to the country that new immigrants go. At the same time the towns with their better conditions attract people from the already sparsely settled countryside. Imbalance between town and country is a major problem of under-populated countries. It is difficult to increase settlement in sparsely populated areas because people are unwilling to forego the amenities of the town. Where there are few people it is uneconomic to provide elaborate communications, health, education or other facilities.
This in turn increases the unwillingness of people to settle in such areas. Lack of population makes it difficult for a country to develop its resources to the full. Minerals will usually be extracted, especially precious metals and petroleum, because the desire for wealth will overcome other considerations. Agricultural resources are more difficult to develop because they require more and harder work over a long period of years before they show a good return. In the nineteenth century when the U. was settled people were prepared to develop the land because many of them were landless peasants, but immigrants to under-populated countries today generally prefer town life. The growth of industry is often slow in under-populated countries because there is a shortage of labour, especially skilled labour, e.
in the South American and African countries. Where skilled labour has to be brought in this raises the cost of industrial development. Moreover the small population does not always provide an adequate market even where the standard of living is high. Many under-populated countries have hostile climatic or relief conditions which make settlement difficult or dangerous for immigrants. Such conditions obstruct development and are likely never to be fully overcome. Are there any solutions to the problems of underdeveloped countries? In terms of economics the major need is for an infusion of capital, probably in the form of foreign aid, to finance development. In terms of population the need is for a decline in birth rates in overpopulated countries, but progress towards this end is extremely slow so that the improvement of agriculture, establishment of industry and extension of educational, health and other facilities will in the long run be more important in solving overpopulation by making better use of available resources.
In under-populated countries immigration might be increased but this could only work if immigrants possessed the right skills and were prepared to live in the sparsely populated areas. To open up under-populated areas is both difficult and expensive and thus economic factors are again paramount. Essay He thought that a balance could only be maintained if famine, disease or war periodically increased the death rate and reduced population growth. His pessimistic ideas were accepted by several other nineteenth-century scholars in England and France and many people still hold similar views today. Is this pessimistic view really justified? He was not considering the world as a whole but only England.
Moreover he wrote almost years ago when conditions certainly justified some of his conclusions. At the end of the eighteenth century the population of England was only about 10 million, but much of their food supply had to be produced from the limited agricultural land of the country. The Agricultural Revolution of the late eighteenth century had brought about many improvements, but farming methods and crop yields were still much lower than they are today. Changes in land tenure, brought about by enclosure of the old common fields and the formation of large farms in the place of small scattered plots, led to rural depopulation.
The towns, especially those where the new factory industries had been established, grew very rapidly and were overcrowded, dirty and unhealthy. The people who lived in them were poor, under-fed, overworked and had little resistance to disease. Thus, had food supplies been reduced or population expanded too rapidly, these people would have suffered and starvation and epidemics would have reduced the population. Hunger reduced resistance to diseases and bubonic plague caused the death of many thousands of people. Malthus was afraid that something similar would happen again.
In his time great advances were being made in the treatment and control of diseases such as cholera, typhoid and smallpox which were still rife in England and Europe. This meant that death rates, and particularly infant mortality rates, were falling. Malthus calculated that population could double every 25 years, but no similar increases in food supplies could be expected. Given the social conditions of the time it was not therefore surprising that his predictions should be pessimistic.
Zebra mussels readily, perhaps preferentially, settle on native bivalves and eventually cover them over. They filter the water so efficiently that they can lower the amount of suspended food organisms below levels needed to sustain native unionids. Mussel population decline cannot be attributed to a single factor, but rather a combination of often interacting factors from land use change e. water quality degradation, habitat loss, altered streamflow, and sedimentation , direct channel modification e. dam building , host fish availability more on this later , and invasive species impacts e.
predation and zebra mussel infestation. In fact, instrumented mussels are being used as biomonitors for water quality. Mussels are filter feeders, and they have the ability to close their shells for a period of time when a contaminant is present. By monitoring mussel gape i. e the rate which they open and close their shells , water resource managers can tell, for example if all mussels close up quickly, that there is likely potentially harmful. Salmon has been a highly demanded product by millions of customers as well as the countries who rely on seafood as a primary dish. Several sources play a factor in the huge amounts of salmon being depleted including overfishing, loss of habitat, and even dams.
Since the late s, other ways of reversing what was happening to populations were being proposed and one new technical approach to re-populate the salmon fish exponentially was known as salmon farming, but the process brought more problems to the salmon species then there were good. Mytilus Californianus are known as California mussels that form dense mussel beds and considered one of the most abundant intertidal organisms. They are found clustered together in the upper-middle zone on the open coast. Mytilus Californianus attach themselves to rocks by byssal threads. They have geographic range from the Aleutian Islands of Alaska to northern Mexico of Baja California Morris et al. For long period of time, human use these mussels as a food source.
These mussels can grow up to to mm in size but the process usually is attained in three years. The author states that there are reasons to believe that Zebra mussel's invasion cannot be stopped and poses a serious threat to fresh water fish population and provides three reasons. In contrast, the professor states that there are ways to control mussel's spread and he said that they could not stop the spread in the past because of lack of knoledge and he opposes each of the author's reason. When it comes times for them to reproduce, the female may produce up to , eggs in a single year.
These eggs eventually develop into a small microscopic larva that will ultimately begin to form their own shells. First they started showing themselves in the great lakes and from there they spread. Shellfish require nitrogen to grow and while growing, filter the water, improving water clarity and removing biomass Bricker et al. Harvesting the shellfish makes the removal permanent and in the case of the blue mussel in Sweden, a 10 by m by 6m deep farm grows to metric tons of mussels removing almost to Kilograms of Nitrogen in 18 months Lindahl et al. This same farm can filter about 50, square meters of surface water over the course of a year improving water clarity Lindahl et al. Considering that the LNB encompasses over ha of water, which provides plenty of space for aquaculture without conflicts with other users.
Approval for a project like a mussel farm or other shellfish would require a purpose or business plan plus a variety of permits. Aquaculturists in Long Island Sound already grow oysters, which provides the same benefits as mussels, but takes a little longer to grow. Connecticut DEEP manages the permitting process in this area, providing a single organization to work with. The nitrogen removed from a single farm would go a long way towards mitigating the Kg of nitrogen added every year, see figure 1. While some challenges do exist in getting started, LNB size provides ample space for an activity like shellfish aquaculture, which would start eutrophication reduction immediately, increase water clarity and provide a usable.
The aim of this lab is to determine if the Seven River oyster is suitable for oyster restoration. During this lab we learned that Salinity affects the oysters if it is more than ppt. We also have knowledge that there is a parasite the protozoan, Haplospordium nelson that causes the disease MSX in oysters Readel, Moreover, at the lab we knew that MSX bacteria will grow if salinity is above 15 ppt that will cause the oysters to die. The oysters can be affected by MSX if the salinity is above 15 ppt Readel, Furthermore, Oysters are also used to filter the water of the river. Also, we learned that the range of tolerance of salinity for oysters is Different legislations have been applied to manage this Mullets resource at velddrift. The Marine living resource act aims to provide for the conservation of the marine ecosystem, which includes long term sustainable utilisation of resources and orderly access to exploitation, utilization protection of certain living resources.
This act is being used at the Berg river estuary where Mullets is the main living resource harvested by communities. The purpose of the act is to provide control over this resource in a rational and unbiased manner to the benefit of all communities of velddrift. The act aims to achieve the best use and ecological sustainable development of Mullets species at the Berg Estuary Waternet. za, This legislation also states that no person has the authority to engage in commercial fishing or any other type of fishing, or participate in Mari-culture and to operate a fish processing establishment of fishing, no person is allowed to abolish any fauna and flora rather than to partake in fishing Mullets species.
For a person to undertake or engage to operate a fish process establishment or to undertake in any sort of commercial or subsistence fishing, one must be granted a right to do so by DAFF Anon,. Jason performed a semi-quantitative survey for federally listed mussels on the mainstem of the Apalachicola River near the Estiffanulga boat launch. Side-scan sonar imagery was integrated with aerial imagery to design a stratified random survey design for estimating densities of two federally protected mussel species. Although the author provides some clear demonstration which indicates that zebra mussel could cause negative impact in North America, the lecturer takes issue with what has been proposed by the author. This controversy has been summarized in the following paragraphs.
One of the famous instances is overfishing of holothurians that occurred in the s. Holothurian is a precious marine creature which is also known as sea cucumber or bêche-de-mer. It began with Macassan fishers, who fished holothurian before twentieth century, leaving centuries-old tradition of trepang fishing in the Great Barrier Reef areas, where black teatfish is the main targeted species. One outstanding characteristic of holothurian. For this project, we are researched the salmon trade and how it has evolved over the years.
The salmon commodity chain has three main consumers — the United States, Japan, and China. The development of aquaculture has changed our consumption of salmon drastically over the past decades, with Norway leading the aquaculture industry, and Chile fast catching up. Because of differing standards of farming, the quality of cultivated salmon varies; some farms may use chemicals, while others focus on a sustainable farming process focused on longevity of humans, salmon, and the earth. Atlantic salmon used to overflow waters ranging from Quebec to Newfoundland, all the way southwest to Long Island Sound. Come the beginning of the 19th. A man named Antoni van Leeuwenhoek dropped everything and ran with his wife to his worktable because he was viewing a sample through a glass that magnified everything to up to x.
Nobody else had anything that powerful. Salmon farming is becoming more and more popular as salmon population increases. Currently, over half the salmon sold globally is farm-raised in Northern Europe, Chile, Canada, and the United States, and the annual global production of farmed salmon has risen from 24, to over 1 million metric tons during the past two decades Hites, pg. Because salmon farms are so widespread, salmon from farms in northern Europe, North America, and Chile are now available widely year-round at relatively low prices Hites, pg. The problems that occur from salmon farming, mostly come from how they are contained.
Most salmon farm use open net-cages in the ocean which helps the salmon move around freely. Complications arise with these types of containments. Essay Topics Writing. Home Page Research World Population Essay. World Population Essay Decent Essays. Open Document. According to the Population Division of the United Nations, world population reached 6, million in and will continue growing by more than 76 million per year, United Nations estimates indicate that by there will be between 7, million and 10, million, being the most likely projection of 9, million inhabitants.
The availability of arable land and increased efficiency in food production from land can reach their limits. The oceanographic conditions, climate and its effect on soil quality and various human uses to determine crop land will be unable to provide food for the ever growing human population. This trend is particularly evident in Norway, where the combination of reduced availability of wild resources and sustained increases of crops has resulted in the production of farmed Atlantic salmon is times higher than the wild catch. In Canada, the decline of natural stocks of Atlantic salmon and Pacific has led to severe restrictions on the catch of wild species. The development of the mussel, which represents the oldest farming activity has been developed in Chile, since there are reports of field trials from Yanez, , was initiated breakdown product of the fisheries of these resources, as the near extinction of "choro shoe" and the depletion of the natural banks of the "mussel" and "mussel.
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Essay on World Population: Top 10 Essays | Human Geography,Long and Short Essay on Population in English
WebThe world's population has exceeded billion and continues to increase about another 76 million each year. The three most populated countries are China, India, and the WebOpen Document. According to the Population Division of the United Nations, world population reached 6, million in and will continue growing by more than 76 WebHe explains in his An Essay on the Principle of Population, that population growth generally preceded expansion of the population’s resources, in particular the primary WebFeb 2, · The population is the total number of human beings living in a city or the country. It allows knowing how much resources are required by this population to fulfil WebAs a result, world population entered the twentieth century with approximately billion people and left the century with billion. In the next 50 years the annual growth will ... read more
What is population control? Another problem is that the work force is generally well-educated and skilled and there is a shortage of unskilled workers. Population structure in Japan now follows the European pattern. When the term population is thrown around, the human race comes to mind. Migration can also result in overcrowding in certain areas. There are numerous people seeking jobs but the vacancies are limited.
Since the late s, other ways of reversing what was happening to populations were being proposed and one new technical approach to re-populate the salmon fish exponentially was known as salmon farming, but the process brought more problems to the salmon species then there were good, world population essay. Many species of animals are not being able to cope up with the growing pollution. Some of the main difficulties arise because people are not distributed evenly over the earth and because the age and sex structure of populations world population essay widely from country world population essay country. The sex structure of population is also important. Company profile Departments Staff. Citizens need to understand the negative impact of the population explosion.
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