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Water pollution is a modification of this, most often caused by humans, which makes it unfit or dangerous for human consumption, industry, agriculture, fishing and recreational activities as well as for animals and wildlife. While water pollution can come from natural sources most of the current pollution comes from human activities. The development and industrialization pose a greater use of water, a big waste generation, many of which end up in the water and the use of means of river and sea transport that often, cause water pollution. Surface waters are generally more vulnerable to anthropogenic pollution to groundwater by direct exposure to human activity.
In the long run, the consequences could be catastrophic. Just think only in biological-effects as a result of increased pollution-fertilizers could result if the proliferation of microscopic forms were so large that it significantly reduced the level of dissolved oxygen in the ocean water. The marine pollution caused by humans is much higher than that attributable to natural causes.
Some sources of water pollution are natural. For example, mercury that occurs naturally in the Earth's crust and oceans pollution generated naturally from these. Something similar happens with oil and many other products. Normally natural pollution sources are widely dispersed and do not cause high levels of pollution, except in some very specific places. The pollution of human origin, however, is concentrated in specific areas and, for most pollutants, is much more dangerous than natural.
Other sources of water pollution is organic waste from slaughter cattle and poultry. The fruit and vegetable processing requires large amounts of water for washing, peeling and bleaching, which produces large amounts of wastewater with high organic content. It is a source of pollution due to permanent or temporary movement of salt water to fresh water it displaces. Saline intrusion can occur in both surface and underground sources that are located in coastal regions. In the case of groundwater, aquifer exploitation Gloom can produce a static level that generates a movement of the saline interface, which will enter salt water.
Captives aquifers and unconfined aquifers with a waterproof upper level are naturally protected against pollution, which in principle can only occur where the aquifer becomes captive or free kick waterproof upper level. In reality, a captive may be contaminated aquifer through poorly constructed wells or corrosion. Moreover involving nonpoint sources of diffuse pollution and include activities that cover a larger area and can cause general contamination of groundwater, which is why they are more difficult to control than point sources. Perhaps one of the biggest problems caused by agriculture is diffuse pollution, the most important is caused by nitrates.
The mangrove is often considered a type of biomass, consisting of very salt tolerant trees that occupy the intertidal zone near the mouths of freshwater streams of the coasts of tropical and subtropical latitudes of the Earth. Thus, among the areas with mangroves include estuaries and coastal areas. They have a high biodiversity with high productivity, finding as many bird species of fish, crustaceans, molluscs and other.
Mangroves play a major role in coastal protection against wind and wave erosion. Have high productivity, housed lots of water, amphibians and terrestrial organisms; motors are generators of life, are habitat for juvenile stages of hundreds of species of fish, molluscs and crustaceans. They are temporary habitat for many species of northern and southern migratory birds. Mangroves despite its relatively small area coverage compared to other terrestrial biotopes are one of the 14 biomes land ie form a unique cohort, outstanding, plant and animal inhabiting spaces with equally unique physical characteristics.
Mangroves are a palliative against possible climate change by fixing CO 2, but also because the mangrove immobilized large amounts of sediments rich in organic matter. Mangroves play an important role as a source of irreplaceable resources for many rural populations in the tropics. This is particularly critical in regions where adjacent land areas mangroves are predominantly arid. Population growth, urban sprawl, the preponderance of consumerism and the advent of efficient extraction technologies have decimated mangrove resources in many regions, even irreversible condition deterioration and exhaustion.
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