Marine Pollution Causes Effects And Control Pdf

marine pollution causes effects and control pdf

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The planet keeps nudging us with increasingly extreme droughts, reminding us that water is life. It is an essential resource upon which all living beings depend and it is crucial to all social and economic development, as well as energy production and adaptation to climate change.

We tend to look skywards when talking about pollution, but this problem is not confined to our skies. The soil in which our fruit and vegetables grow is also suffering its consequences, the effects of which getting to us directly, for instance, through the aforementioned foodstuffs. The time has come to look after what lies under our feet! Soil pollution is mostly caused by chemical substances produced by human activity.

Essay on Marine Pollution: Sources, Effects and Control

The planet keeps nudging us with increasingly extreme droughts, reminding us that water is life. It is an essential resource upon which all living beings depend and it is crucial to all social and economic development, as well as energy production and adaptation to climate change.

Nevertheless, we are now facing a gigantic challenge. How do we stop contaminating our rivers, seas, oceans, canals, lakes and reservoirs? Water pollution is endangering the health of millions of people around the world. The waters of the River Ganges flow clear and clean through the Indian city of Rishikesh at the gateway to the Himalayas. In these mountains, nobody would guess that this water will be transformed into one of the most heavily polluted rivers in the world, with faecal bacteria levels up to 31 million per millilitres.

This is according to reports from Sankat Mochan Foundation, an organisation struggling to restore the Ganges to its former glory. These levels mean that the sacred river has become synonymous with water pollution, a worldwide problem affecting one in every three people on the planet, according to the United Nations UN.

The World Health Organisation WHO says that polluted water is water whose composition has been changed to the extent that it is unusable. In other words, it is toxic water that cannot be drunk or used for essential purposes like agriculture, and which also causes diseases like diarrhoea, cholera, dysentery, typhoid and poliomyelitis that kill more than , people worldwide every year.

The main water pollutants include bacteria, viruses, parasites, fertilisers, pesticides, pharmaceutical products, nitrates, phosphates, plastics , faecal waste and even radioactive substances. These substances do not always change the colour of the water, meaning that they are often invisible pollutants. That's why small amounts of water and aquatic organisms are tested to determine water quality.

It is sometimes caused by nature, such as when mercury filters from the Earth's crust, polluting oceans, rivers, lakes, canals and reservoirs.

However, the most common cause of poor quality water is human activity and its consequences, which we will now go on to explain:.

Rising global temperatures caused by CO 2 emissions heat the water, reducing its oxygen content. Felling forests can exhaust water resources and generate organic residue which becomes a breeding ground for harmful bacteria.

Chemical dumping from these sectors is one of the main causes of eutrophication of water. Much of the plastic pollution in the ocean comes from fishing boats, tankers and cargo shipping. The transportation and storage of oil and its derivatives is subject to leakage that pollutes our water resources.

Deteriorating water quality is damaging the environment, health conditions and the global economy. The president of the World Bank, David Malpass, warns of the economic impact: "Deteriorating water quality is stalling economic growth and exacerbating poverty in many countries". The explanation is that, when biological oxygen demand — the indicator that measures the organic pollution found in water — exceeds a certain threshold, the growth in the Gross Domestic Product GDP of the regions within the associated water basins falls by a third.

In addition, here are some of the other consequences:. The impact of water pollution. Half of the world's inhabitants will live in water-scarce areas by , so every drop of polluted water today is an irreparable loss for tomorrow. That's why we must prevent water pollution with measures like the following:. Skip to main content.

Share in Twitter. Share in Facebook. Whatsapp Whatsapp. Water pollution: how to protect our source of life The planet keeps nudging us with increasingly extreme droughts, reminding us that water is life. Carousel of images and videos. Deforestation Felling forests can exhaust water resources and generate organic residue which becomes a breeding ground for harmful bacteria.

Industry, agriculture and livestock farming Chemical dumping from these sectors is one of the main causes of eutrophication of water. Maritime traffic Much of the plastic pollution in the ocean comes from fishing boats, tankers and cargo shipping. Fuel spillages The transportation and storage of oil and its derivatives is subject to leakage that pollutes our water resources.

In addition, here are some of the other consequences: Destruction of biodiversity. Water pollution depletes aquatic ecosystems and triggers unbridled proliferation of phytoplankton in lakes — eutrophication —. Contamination of the food chain. Fishing in polluted waters and the use of waste water for livestock farming and agriculture can introduce toxins into foods which are harmful to our health when eaten.

Lack of potable water. The UN says that billions of people around the world have no access to clean water to drink or sanitation, particularly in rural areas. The WHO estimates that about 2 billion people have no option but to drink water contaminated by excrement, exposing them to diseases such as cholera, hepatitis A and dysentery. Infant mortality. According to the UN, diarrhoeal diseases linked to lack of hygiene cause the death of about 1, children a day worldwide.

That's why we must prevent water pollution with measures like the following: Reduce CO 2 emissions to prevent global warming and acidification of the oceans. Reduce the use of chemical pesticides and nutrients on crops. Reduce and safely treat waste water so that, as well as not polluting, it can be reused for irrigation and energy production.

Restrict the use of single-use plastics that end up floating in rivers, lakes and oceans, many as microplastics. Encourage sustainable fishing to ensure the survival of species and avoid depletion of the seas. Did you find it interesting? Subscribe to our Newsletter! I have read and accept the Newsletter's privacy policy.

WATER POLLUTION

Oceans are the largest water bodies on the planet Earth. Ocean pollution , also known as marine pollution , is the spreading of harmful substances such as oil, plastic, industrial and agricultural waste and chemical particles into the ocean. Since oceans provide the home to a wide variety of marine animals and plants, it is the responsibility of every citizen to play his or her part in making these oceans clean so that marine species can thrive for a longer period of time. Mining for materials such as copper and gold is a major source of contamination in the ocean. For example, copper is a major source of pollutant s in the ocean and can interfere with the life cycles of numerous marine organisms and life. Nitrogen-rich fertilizers applied by farmers inland, for example, end up in local streams, rivers, and groundwater and are eventually deposited in estuaries, bays, and deltas.

What is Ocean Pollution?

Pollutants are dumped into the ocean. This waste affects the daily life of fish and other marine creatures. This lists the logos of programs or partners of NG Education which have provided or contributed the content on this page.

Pollution entering our oceans from both man-made and natural activities is affecting marine ecosystems throughout the world. Animals often eat these pollutants which, means humans will as well. Runoff from the land comes from both urban and agricultural areas. Chemicals that end up on roads and highways flow over and under the ground with rainwater, as do pesticides; fertilizers; and carbon-, nitrogen-, and phosphorous-rich particulates, eventually reaching the ocean. Inland mining can cause an influx of mineral and soil deposits.

Background: Pollution — unwanted waste released to air, water, and land by human activity — is the largest environmental cause of disease in the world today. It is responsible for an estimated nine million premature deaths per year, enormous economic losses, erosion of human capital, and degradation of ecosystems. Ocean pollution is an important, but insufficiently recognized and inadequately controlled component of global pollution.

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Marine Pollution

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Marine Pollution

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Delicia M.

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To understand the effects of water pollution and the technology applied in its control, it is useful to classify pollutants into various groups or categories. Water.

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