Quick Answer: Where Would You Expect The Lowest Marine Biological Productivity?

North and South Atlantic: Large gyre systems, with low productivity. In the north Atlantic, the gyre is called the Sargasso Sea. Pacific: Relatively high productivity, but still low in gyres.

Which ocean zone has the lowest productivity?

the marine zone with the lowest rate of photosynthesis would likely be the B) abyssal zone as this zone is furthest from the surface and therefore receives the least sunlight. Since sunlight is required for photosynthesis the abyssal zone has the least potential for primary productivity.

What are the marine ecosystems with the lowest net primary productivity?

The highest NPP rates are in swamps and marshes, tropical rainforests and estuaries, while the lowest are found in the desert, tundra and open ocean.

Where does most biological productivity in the ocean occur?

Higher chlorophyll concentrations and in general higher productivity are observed on the equator, along the coasts (especially eastern margins), and in the high latitude ocean (Figure 4a and b).

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Which marine zone is the most biologically productive?

The uppermost zone, from the sea surface to a depth of 200 m (656 ft), is called the epipelagic or photic zone. The large amount of available sunlight makes this the most productive zone of the ocean.

Why the productivity of ocean is low?

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 is productivity low in tropical regions?

Biological productivity is low in tropical regions because the strong thermocline prevents the mixing of waters and movement of nutrients. Polar regions have low biological production because of the lack of sunlight.

What ecosystem has the lowest productivity?

Deserts, tundra, the open ocean, and the lakes and streams biome all have the lowest amounts of primary productivity.

What ecosystem do you think has the lowest productivity Why?

Deserts, tundra, and the deep ocean are the least productive ecosystems, typically having an energy fixation of less than 0.5 × 103 kilocalories per square meter per year (thousands of kcal/m2/yr; it takes one calorie to raise the temperature of one gram of water by 34°F [1°C] under standard conditions, and there are

What 3 ecosystems have the lowest productivity?

The biomes with the lowest levels of primary productivity include deserts, the tundra, the open ocean, and the lakes and streams biome.

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Where does all marine productivity begin?

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.

Where is net primary productivity generally low in the ocean?

North and South Atlantic: Large gyre systems, with low productivity. In the north Atlantic, the gyre is called the Sargasso Sea. Pacific: Relatively high productivity, but still low in gyres.

Where are oceans the most productive quizlet?

-In polar oceans, there is incredibly high productivity in the summertime.

Where is the most biologically productive zone?

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.

What areas of the oceans are the most productive?

Although they occupy less than two percent of the oceans, the coastal upwelling areas in the eastern parts of the Pacific and Atlantic Ocean are among the biologically most productive marine areas worldwide.

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