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

Why does coastal upwelling lead to high biological productivity? It brings cold, nutrient-rich water to the surface, where phytoplankton reside. It brings warm, 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 do areas of upwelling typically have high primary productivity?

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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Why is the open ocean so less biologically productive than the coastal zone?

Because of the density difference between surface water and the deep sea across most of the ocean, ocean circulation can only very slowly reintroduce dissolved nutrients to the euphotic zone. By driving nutrients out of the sunlit, buoyant surface waters, ocean productivity effectively limits itself.

Why does coastal upwelling occur on the west coast of many continents?

Upwelling is most common along the west coast of continents (eastern sides of ocean basins). In the Northern Hemisphere, upwelling occurs along west coasts (e.g., coasts of California, Northwest Africa) when winds blow from the north (causing transport of surface water away from the shore).

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 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 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.

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Why are upwelling zones more productive than the open ocean?

In upwelling areas along coasts where the nutrients are brought back up, productivity is 5-6 times that of the open ocean and greater than the land average. This means the warm water in effect gets stuck above the cold water where all the nutrients are. In temperate zones, this only happens in the summer.

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?

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 are cold oceans more productive?

Where phytoplankton grow depends on available sunlight, temperature, and nutrient levels. Because cold waters tend to have more nutrients than warm waters, phytoplankton tend to be more plentiful where waters ware cold.

Why does the ocean have low productivity?

In ocean, sunlight is the main limiting factor which decreases the rate of photosynthesis. Minerals and nutrients can also be a retarding factor based on location of the oceans.So, there will be less productivity than land which is 170 billion tons compared to 55 billion tons ion oceans.

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.

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Why does upwelling occur along the west coast of South America?

In places where surface waters are moved away from a coast by this process, water rises up from deeper in the ocean to take its place. Winds traveling north cause upwelling along the west coast of South America. This happens when winds cause Ekman transport to push water toward a coast and then deeper in the ocean.

Why do polar regions tend to have higher primary productivity?

Primary productivity is strongly dependent upon light availability and the presence of nutrients, and thus is highly seasonal in the Arctic.

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