It gets especially worse during an El Nino year. In 1990 during the El Nino 65% of the coral reef in the Persian Gulf was destroyed. There are many local threats of a coral reef, one of them being fishing. A huge percentage of the world’s population relies on coral reefs for food and income. Local residents fish on the reefs as their livelihood depends on it.
Explain why oil exploration in the areas shown could lead to high economic and environmental costs. (10) The environmental effects of oil exploitation in these areas can vary depending upon the type, position and severity, however most pose the threat of being potentially severe. The explorations are taking place in deep water areas such as the Gulf of Mexico, the North Sea or the Arctic. Just one of the many potential risks and dangers of deep sea drilling is highlighted by the horizon oil rig spill of oil extracted from the sea floor. A spill in any of the deep sea areas would reduce the biodiversity of that area through reductions of bird populations, fish-stocks and populations of marine mammals.
Aquatic Invertebrates: Adaptations and Feeding Guilds INTRODUCTION Global warming and human's authoritative influence on the environment such as deforestation, pollution etc. are taking a bad toll on the diversity of the ecosystem. Global warming which has brought about increase in the temperatures is disturbing the natural cycle of the ecosystem. This has brought upon an increased droughts throughout the world. The droughts and increased heat has had negative impacts on local aquatic invertebrates.
Runoff Quality of the water flowing from the a\land is critical to the reef’s health. The ones near the mainland are the most damaged because of human activities. The land use activities near the coast increases freshwater runoff and the build up of silt. As more land is eroded by human activities the runoff increases destroying the vegetation. Fertilisers, sewage and pollutants can have direct impact on the coral reefs.
Pesticides are used to kill unwanted pests, but are polluting the water with toxic chemicals that can have large halflifes, which means they stay in the water many years causing harm to plants and animals who depend on fresh water to survive. Storm drains carry unfiltered water into the bay, which can carry harmful substances like pesticides, oil, lawn trimmings, and trash. Many species of fish and wildlife, including endangered species, are declining in population. Water pollution is a serious problem that the state of California needs to address. Introduction Storm water runoff is unfiltered water which flows across impervious surfaces and goes into creeks, rivers, lakes, and the ocean (“Stormwater Runoff”, 2010).
It is also the nation’s most productive estuary ( Zynjuk, 1995). Although I have seen a drastic decline in fishing, crabbing, bay grasses, and land, this problem has been an issue over a hundred years. It's time for the government and people in general to step up and fight to improve the quality of the water of the Chesapeake Bay and its tributaries. Although many people refer to pollution as things we see such as floating debris and garbage, nutrients such as nitrogen and phosphorous are the biggest killers of the bay waters. Although these nutrients are essential to maintain plant and animal life, excessive amounts are detrimental.
Environmental health Unit 38 P1 Explain how human activity can damages the environment For years now we have been warned about human activity destroying our planet and environment. Some of the things that humans are affecting are Climate Change, Depletion of Ozone Layer, Pollution, Deforestation and Extinction of Species. Overcrowding, urbanisation and population growth Overcrowding can affect our planet more than some people think, Overcrowding means more people this means we use more natural resources this means the earth in the end isn’t going to have enough resources to support the growing population. Remember every person on the planet takes up space which could be used for farmland, and forests. People excrete wastes and litter that flow into water systems, and animal habitats, this is slowly polluting water and killing wildlife.
Beach closures have also been more frequent being something many families, and residents have once enjoyed. These toxic chemicals have been found in fish and wildlife, which have been deposited into the lake by manufacturing sites and other industrial companies. (Glutting, 2003)Runoff pollution, pollution that comes from a single location has also added to the lake’s devastation. Storm water, irrigation runoffs, sediments, fertilizers, and fecal matter deposits, are some of the discharges contributed by sewage treatment plants. These runoffs have contributed to the beach closures, and the unsustainable condition of biological life in the lake.
Not only is the water unfit for human consumption, it is now destroying the marine ecosystem and this is serious business when you consider how important the ocean's health is to human survival. The level of mercury found in tuna and salmon has already resulted in warnings about how much to consume because it is threatening to our very life. Close
Exposing health risks associated to contaminated seafood, drinking water harmful to human consumption and polluted beaches. Illnesses traced to