FAQ: Why Does Coastal Upwelling Lead To High Biological Productivity?

Why does coastal upwelling lead to high biological productivity? It brings cold, nutrient-rich water to the surface, where phytoplankton reside. This is where wind direction forces surface water away from the shore.

What does coastal upwelling lead to high biological productivity?

Water that rises to the surface as a result of upwelling is typically colder and is rich in nutrients. These nutrients “fertilize” surface waters, meaning that these surface waters often have high biological productivity. Therefore, good fishing grounds typically are found where upwelling is common.

Why is primary productivity typically higher in ocean upwelling zones?

The proximity to land and its nutrient sources, the interception of sinking organic matter by the shallow seafloor, and the propensity for coastal upwelling all result in highly productive ecosystems.

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How does an upwelling promote growth of organisms?

The deeper water that rises to the surface during upwelling is rich in nutrients. These nutrients “fertilize” surface waters, encouraging the growth of plant life, including phytoplankton. Upwelling can also play an important role in the movement of marine animals.

Why are upwelling zones generally more productive than coastal oceans?

***Why are upwelling zones generally more productive than coastal oceans? MORE TURBIDITY in coastal waters, which limits the depth reached by solar radiation. Remembering that {sunlight & nutrients are necessary for photosynthesis}, upwelling brings cold, nutrient-rich waters up from depth to the surface.

Why are coastal areas more productive?

Another well-known mechanism for coastal productivity is river outflow. Natural and manmade nutrients—principally nitrates and phosphates—run off the land and fertilize marine plants. These nutrient-rich, oxygen-poor waters become dead zones, driving animals to migrate or die.

Why do coral reefs tend to have such high biological productivity?

Why are algae beds, coral reefs, and tropical rainforests so productive? They are minimally affected by human activities. Primary producers in these areas have few predators. They are located near warm ocean currents that provide the primary producers with nutrients.

Why is productivity higher for coastal and estuarine waters than for the open ocean?

Coastal waters are more productive than the central ocean for two main reasons. First, runoff from land often contains a high abundance of nutrients which get deposited in coastal waters and stimulate production.

Why does upwelling increase biological productivity quizlet?

Why does upwelling increase biological productivity? It provides nutrients used by phytoplankton. Where on the globe does deep-water formation occur? The floats that are programmed to measure deep currents are called what?

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How do seaweeds and marine plants contribute to the primary productivity of the ocean?

Most marine primary production is generated by a diverse collection of marine microorganisms called algae and cyanobacteria. Together these form the principal primary producers at the base of the ocean food chain and produce half of the world’s oxygen.

Why does coastal upwelling occur?

Winds blowing across the ocean surface often push water away from an area. When this occurs, water rises up from beneath the surface to replace the diverging surface water. This process is known as upwelling. Major upwelling areas along the world’s coasts are highlighted in red.

Why are Downwellings important for marine environments?

Currents also are a major factor in ocean ecosystems. Two types of current motion, upwelling and downwelling, strongly influence the distribution and abundance of marine life. When currents upwell, or flow up to the surface from beneath, they sweep vital nutrients back to where they’re needed most.

Why are upwellings important to ocean ecosystems?

Effects of Upwelling Because the deep water brought to the surface is often rich in nutrients, coastal upwelling supports the growth of seaweed and plankton. These, in turn, provide food for fish, marine mammals, and birds. Upwelling generates some of the world’s most fertile ecosystems.

Why do temperate oceans tend to be more productive than tropical oceans?

In the ocean, the surface water gets very warm and remember that warm water is less dense than cold. This means the warm water in effect gets stuck above the cold water where all the nutrients are. So the ocean is more productive in temperate zones. This also explains why the tropics have that pretty clear blue water.

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Why is the productivity of the oceanic zone high even though nutrient levels are low?

Productivity in intertidal and neritic zones is high because sunlight is readily available and because nutrients are available from estuaries and deep-ocean currents. The deepest part of the oceanic zone may have nutrients available from the substrate but lacks light to support photosynthesis.

Which region of the ocean is most likely to be the most productive?

Although they occupy just fewer than two percent of the surface of the oceans, the large coastal upwelling areas on the eastern edges of the Pacific and the Atlantic are among the most biologically productive marine areas of all.

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