What factors may account for low primary productivity in the Neuston ecosystem?

Why are coastal ecosystems generally highly productive?

Coastal ecosystems are generally highly productive because they benefit from nutrients in runoff water and they’re shallow, providing ample light and shelter because plants can grow in many coastal ecosystems.

How does the Neuston ecosystem differ from deeper ecosystems in the euphotic zone ecosystem?

How does the neuston ecosystem differ from deeper ecosystems in the euphotic zone ecosystem? It is very thin, receive maximum sunlight because it covers about 71% of the Earth’s surface. It holds significantly more nutrients, chlorophylla , and carbon compounds.

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Which factors are necessary for the most productive marine ecosystem?

Biotic factors include plants, animals, and microbes; important abiotic factors include the amount of sunlight in the ecosystem, the amount of oxygen and nutrients dissolved in the water, proximity to land, depth, and temperature. Sunlight is one the most important abiotic factors for marine ecosystems.

Why are the most productive marine ecosystems found in cold temperate environments?

why are the most productive marine ecosystems found in cold, temperature regions? they have less overall sunlight, but receive far more nutrients.

What are three reasons coastal ecosystems are highly productive?

Coastal ecosystems are generally highly productive because: They benefit from nutrient-rich runoff from land; Benthic organisms can live in the upper photic zone; plants provide shelter. The greatest challenges to life in supralittoral ecosystems are: Drying out and thermal stress.

Where is the greatest annual total oceanic primary productivity?

ocean pt 2

Question Answer
Where, through a year, is the greatest total oceanic primary productivity? in the temperate zones
Only part of this organism s life cycle is spent as a member of the plankton community. meroplankton
Which of the following are plant-like organisms. phytoplankton

What are the four main factors that affect aquatic ecosystems?

What are the four main factors that affect aquatic ecosystems? Water’s depth, temperature amount of dissolved nutrients, and flow. What does the depth of the water determine? What distinguishes the photic zone from the aphotic zone in an aquatic ecosystem?

What factors affect the depth of the photic zone could there be a Photocline in the ocean?

What factors affect the depth of the photic zone? Could there be a photocline in the ocean? Photosynthetic marine life and the density of water.

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Why are nutrients typically low while dissolved oxygen is typically high in the euphotic zone?

Low nutrient concentrations in the euphotic zone are due to biological uptake and often lead to severe nutrient limitation of phytoplankton during the periods of high water-column stability.

What is the reason for low productivity of ocean?

In ocean, there is insufficient radiation as sunlight decreases with the increasing depth which decreases the rate of photosynthesis. Decrease in rate of photosynthesis decreases the growth of aquatic plants and animals. Minerals and nutrients can also be a retarding factor based on location of the oceans.

What is primary productivity of marine ecosystem?

The productivity of the entire ocean is estimated to be approximately 16 × 1010 tons of carbon per year, which is about eight times that of the land.

Which marine ecosystem has the 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.

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 is the limiting factor responsible for the low productivity of the open ocean in the saltwater biome?

Nutrients are scarce and this is a relatively less productive part of the marine biome. When photosynthetic organisms and the organisms that feed on them die, their bodies fall to the bottom of the ocean where they remain; the open ocean lacks a process for bringing the organic nutrients back up to the surface.

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Which of the following factors limit primary productivity tropical waters?

Primary productivity in tropical oceans is limited by the amount of nutrients available.