What 3 ecosystems have the lowest productivity?

The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.

What 3 ecosystems have the highest productivity?

The world’s ecosystems vary tremendously in productivity, as illustrated in the following figures. In terms of NPP per unit area, the most productive systems are estuaries, swamps and marshes, tropical rain forests, and temperate rain forests (see Figure 4).

Which areas on earth have the lowest productivity?

Some of the least productive ecosystems are: POLAR REGIONS: Polar regions and deserts are the least productive because both types of ecosystems experience little photosynthesis year-round. TUNDRAS: Not only are tundras cold in temperature, but they receive little for rainfall.

What ecosystems have the least amount of productivity per unit area?

What ecosystems have the least amount of productivity per unit area? Tundras, the open ocean, desert scrubs, and the extreme desert. What ecosystems are the most productive in the world? The open ocean and tropical/temperate rain forests.

IMPORTANT:  Quick Answer: Do sandy shores have high biodiversity?

Which aquatic ecosystem has lowest productivity?

Main points

  • Marine ecosystems generally have low productivity. …
  • Coral reefs occur in warm, shallow ocean in areas of constant current. …
  • Productivity in continental shelf areas is higher than that in deep oceans.

Which 3 ecosystems have the highest productivity and which 3 have the lowest productivity?

The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.

Which of the following ecosystem has the lowest net primary productivity?

The rate at which plants and other photosynthetic creatures generate organic substances in an ecosystem is referred to as primary productivity. Deserts, tundra, the open ocean, and the lakes and streams biome all have the lowest amounts of primary productivity. As a result, the right answer is ‘Open Ocean.

Why does the ocean have low productivity?

Open oceans have relatively low primary productivity because of low levels of the essential nutrients nitrogen and phosphorus. 4. Terrestrial plants are advanced in terms of their photosynthetic capacity.

Which is the most productive ecosystem on earth?

Thus, tropical rain forests are the most productive ecosystem.

Why is the ocean so low in productivity?

In the vast unproductive low- and mid-latitude ocean, warm and sunlit surface water is separated from cold, nutrient-rich interior water by a strong density difference that restricts mixing of water and thereby reduces nutrient supply, which becomes the limiting factor for productivity.

Why do deserts have low NPP?

Deserts are areas of low available water. In extreme desert, be it hot or cold, the absence of water will prevent most plants surviving and, hence, productivity is negligible. Plants may show similar adaptations to conserve water in both environments (xerophytism).

IMPORTANT:  What economic and ecological consequences result from anthropogenic activities?

Are all ecosystems equally productive?

When push comes to shove, all ecosystems have the same maximum rain-use efficiency, a measure of total plant growth per unit of precipitation. …

What biomes have high NPP low NPP Why?

Biomes with more vegetation have higher NPP levels (tropical rainforest has the most). Important because it can be an indicator for studying health of diff plants.

Which two marine ecosystems are the most productive?

It is thus not surprising that the most productive natural aquatic plant communities are benthic. In marine waters the most productive systems are brown algal beds, seagrass beds and coral reefs.