What are the effects of the dead zone in the Gulf of Mexico?
The National Oceanic and Atmospheric Administration, or NOAA, estimates that the dead zone costs U.S. seafood and tourism industries $82 million a year. The impact could be devastating to the Gulf’s seafood industry, which accounts for more than 40 percent of the nation’s seafood.
How can we fix the dead zone in the Gulf of Mexico?
The key to minimizing the Gulf dead zone is to address it at the source. Solutions include: Using fewer fertilizers and adjusting the timing of fertilizer applications to limit runoff of excess nutrients from farmland. Control of animal wastes so that they are not allowed to enter into waterways.
What is the Gulf of Mexico dead zone and when does it happen?
This lack of oxygen creates the Dead Zone in bottom waters on the Texas-Louisiana shelf throughout warm summer months. This occurs when there are fewer storms and strong winds to mix the warm, oxygenated surface waters and the cooler, deeper waters.
Which of the following nutrients are responsible for the dead zone in the Gulf of Mexico?
The waste from this entire area drains into the Gulf of Mexico through the Mississippi River. Included in this agricultural waste are phosphorus and nitrogen, the primary nutrient responsible for algal blooms in the Dead Zone . Nitrogen and phosphorus were first used in fertilizers in the United States in the 1930s.
What is the major source of pollution that has resulted in the Gulf of Mexico dead zone?
Nutrient-rich runoff containing nitrogen and phosphorus from agricultural lands and sewage causes the summer dead zone in the Gulf of Mexico . These nutrients, in combination with sunlight and warm waters in the Gulf , trigger algal blooms.
Is the Gulf of Mexico still polluted?
A decade after the BP oil spill: Sick fish, Gulf pollution , and human health problems. The BP oil continues polluting the gulf even today, according to recently released findings by scientists from the University of South Florida’s College of Marine Sciences. It’s still affecting fish and other marine species.
Can the dead zone be prevented from forming?
Dead zones are not irreversible. From 1985-2000, the North Sea dead zone had nitrogen reduced by 37% when policy efforts by countries on the Rhine River reduced sewage and industrial emissions of nitrogen into the water. Solutions. Voluntarily stop fertilizer and waste runoff into lakes, rivers, and streams.
What is the largest dead zone in the world?
Gulf of Mexico
What is the largest area that the dead zone has covered?
The largest dead zone in the world lies in the Arabian Sea, covering almost the entire 63,700-square mile Gulf of Oman. The second largest sits in the Gulf of Mexico in the United States, averaging almost 6,000 square miles in size.
How many dead zones are there?
415 dead zones
What is the dead zone in the ocean?
Less oxygen dissolved in the water is often referred to as a “ dead zone ” because most marine life either dies, or, if they are mobile such as fish, leave the area. Habitats that would normally be teeming with life become, essentially, biological deserts.
What organisms live at the bottom of the Gulf?
The Gulf of Mexico is home to thousands of different species including fish, mammals, turtles, plants, and more. Sea plants include seagrasses, marine algae , mangroves, and marsh grass. They provide habitats for countless creatures including fish, shrimp, bivalves, plankton, and other marine animals.
How big is the Gulf of Mexico dead zone?
18,005 square kilometers
What are the two most important nutrients causing eutrophication in the Gulf of Mexico?
Hypoxia can be caused by a variety of factors, including excess nutrients, primarily nitrogen and phosphorus , and waterbody stratification (layering) due to saline or temperature gradients. These excess nutrients can promote algal overgrowth and lead to eutrophication.
What is the main source of phosphorus found in the Gulf of Mexico?
Sources of phosphorus include agriculture, urban runoff, wastewater treatment plants, stream channel erosion, and natural soil deposits. Hypoxia is a term used to describe waters that have very low dissolved oxygen and thus are stressful to habitats and living resources in lakes, estuaries, and coastal waters.