What marine ecosystem has lowest productivity?
Productivity in the arctic ocean is usually very low, since cold restricts enzyme activity even though all other requirements for photosynthesis may be in excess.
What marine ecosystem supports the least amount of life?
The deep sea textbf{The deep sea} The deep sea is the type of marine ecosystem that do not support lot of life.
Which zone in the marine ecosystem receives most of the nutrients?
An estuary is a coastal zone where oceans meet rivers. Here, nutrients and salts from the ocean mix with those from the river in regions sheltered from extreme weather. As a result, estuaries are among the most productive places on Earth and support many types of life.
What is the most productive marine ecosystem?
Coral reefs are among the most productive ecosystems on the planet, with the primary producers at the base of the food chain (including corals) supporting their complex food webs.
What 3 ecosystems have the lowest productivity?
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 …
Which of the following has lowest productivity?
So, the correct answer is 'Open oceans'.
Is the open ocean full of life?
The open ocean is home to a huge array of organisms, from microscopic plankton to the largest animal to have ever lived, the blue whale, and every size, shape and spectacular creature in-between. However, life is not evenly distributed throughout the open oceans and much of it is referred to as a biological desert.
What is example of marine ecosystem?
An example of a marine ecosystem is a coral reef, with its associated marine life — including fish and sea turtles — and the rocks and sand found in the area. The ocean covers 71 percent of the planet, so marine ecosystems make up most of the Earth.
Why estuaries is the most productive ecosystem?
Despite these challenges, estuaries are also very productive ecosystems. They receive nutrients from both bodies of water and can support a variety of life. Because of their access to food, water, and shipping routes, people often live near estuaries and can impact the health of the ecosystem.
Why are estuaries very productive ecosystems?
Estuaries are very biologically productive. The salinity gradient and the changes in tides, fresh water and accompanying flux in nutrients within estuaries create a variety of habitats that support a diverse food web.
Why there is low productivity in ocean?
Sunlight is the major limiting factor in the oceans. As the depth of the ocean increases, the intensity of light decreases, thus decreasing the photosynthetic rate. This decrease in rate of photosynthesis will eventually decline the development of plants and animals thriving in the aquatic environment.
Why is the open ocean so low in productivity?
In surface waters away from coastlines, generally there is plenty of sun but not enough nutrients. So most of the ocean surface is not very productive. The water is too deep for storms to stir up nutrients from the bottom and there isn't upwelling.
Which 3 ecosystems have the highest productivity and which 3 have the lowest productivity?
What types of ecosystems have the highest productivity per unit area? Estuaries, swamps and marshes, tropical rain forests, and temperate rain forests. What ecosystems have the least amount of productivity per unit area? Tundras, the open ocean, desert scrubs, and the extreme desert.
Which biome has the lowest net primary production?
Warm and wet biomes have the lowest net primary production.
Which of the following ecosystem is least produced productive?
So, the correct answer is 'Open oceans'.
Which of the following is a low productive ecosystem?
Least Productive Ecosystem Are Deserts And Deep Lakes.
Where are the fewest marine organisms found?
The abyssopelagic (or abyssal) zone continues to 6,000m where very few creatures can be found due to the lack of light and near freezing temperatures. The deepest a fish was ever found was here in the abyss at 8,372m down.
What is the least explored ocean?
But new research in the open-access journal PLoS ONE finds that the least explored part of the world is the deep sea, especially what lies beneath the open ocean.
What are the four types of marine ecosystems?
Ocean ecosystems are divided into four zones: intertidal, pelagic, benthic and abyssal. The intertidal zone comprises the regions where ocean waters meet land.
Is a coral reef a marine ecosystem?
Introduction. Coral reefs are the most diverse of all marine ecosystems. They teem with life, with perhaps one-quarter of all ocean species depending on reefs for food and shelter.
Which freshwater ecosystem is least productive apex?
Answer and Explanation: The bog freshwater ecosystem is the least productive.
What is difference between Delta and estuary?
Deltas form at the mouths of rivers that transport enough sediment to build outward. In contrast, estuaries are present where the ocean or lake waters flood up into the river valley. The key difference between the two is where the sediment transported by the river is deposited.
Why do estuaries have low global productivity?
Because nutrients are often readily available in an estuary, phytoplankton production is potentially higher than the nearby ocean, but because many mixed estuaries also have high turbidity, light may be too low below the very surface waters, and thus phytoplankton productivity may be light limited.
Are estuaries most productive?
Despite these challenges, estuaries are also very productive ecosystems. They receive nutrients from both bodies of water and can support a variety of life. Because of their access to food, water, and shipping routes, people often live near estuaries and can impact the health of the ecosystem.
Which ecosystem has the lowest average primary productivity?
The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.
Why are tropical waters nutrient poor?
Nutrients are typically depleted in the surface waters due to photosynthesis and are abundant in deeper waters where they are replenished by the decay and biodegrading of organic matter that sunk into the ocean depths.
Does the open ocean have low levels of nutrients?
The open ocean has very low levels of nutrients. b. Organisms in the deep oceanic zone are exposed to frigid temperatures and total darkness.
What three ecosystems have the lowest productivity?
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 ecosystems have the least amount of productivity per unit area?
What ecosystems are the least productive in the world? Tundras and extreme deserts. The ocean open does not contain as much life per unit area, but is responsible for a large amount of the Earth's NPP.
Is Coral Reef a least productive?
Solution : In oceans, there are lots of nutrients but no sufficient sunlight is available in deep areas hence, oceans have least productivity. Grasslands are less productive ecosystem with annual productivity of `200-100 gm//m^(2)`. Maximum productivity can be seen in coral reefs followed by estuaries.