How can aquatic ecosystems increase productivity?

On land, it is driven by temperature and availability of water and nutrients modified by land use. In aquatic ecosystems, primary productivity is driven by the availability of nutrients and light and, to a lesser extent, by temperature and other factors.

What is productivity of aquatic ecosystems?

The productivity of aquatic systems has been given two meanings in the literature: either the transfer of matter or energy through the food web, or the quantity of fish that may be captured in a sustainable way per unit of time.

What factors affect the productivity of an aquatic ecosystem?

Net primary productivity varies among ecosystems and depends on many factors. These include solar energy input, temperature and moisture levels, carbon dioxide levels, nutrient availability, and community interactions (e.g., grazing by herbivores) 2.

Why are aquatic ecosystems more efficient?

Sun is the source of energy that absorbed by the primary producers where in it is converted to stored chemical energy for the functioning of an ecosystem. … Aquatic ecosystems usually have higher efficiency compare to land ecosystems because higher proportion of ectotherms and producers like the algae are lack in ligin.

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Which aquatic ecosystem has the highest productivity?

Coral reefs have the highest productivity in aquatic ecosystems. In terrestrial ecosystems, tropical rainforests have the highest productivity.

How does productivity increase?

Productivity increases when: more output is produced without increasing the input. the same output is produced with less input.

How can primary productivity increase?

A high primary productivity rate in the ecosystems is obtained when the physical factors (for instance: water, nutrients and climate) are favourable. The presence of some forms of secondary energy can also help to increase the primary productivity rate.

What affects productivity in an ecosystem?

The largeness of primary productivity depends on the photosynthetic capacity of producers and the existing environmental conditions, such as solar radiation, temperature and soil moisture.

What are the two most productive aquatic ecosystems?

List two of the most productive ecosystems or aquatic life zones and two of the least productive. The two most productive are estuaries, swamps and marshes, and tropical rain forests. The two least productive are open ocean, tundra, and desert.

Which is responsible for low productivity of aquatic habitat?

In aquatic ecosystems, productivity is limited by light which decreases with increasing water depth.

How does productivity increase in aquatic ecosystems quizlet?

On land, it is driven by temperature and availability of water and nutrients modified by land use. In aquatic ecosystems, primary productivity is driven by the availability of nutrients and light and, to a lesser extent, by temperature and other factors.

Are aquatic ecosystems less productive than terrestrial ones?

Terrestrial plants are less productive per unit standing biomass because growth rate declines with size in primary producers (Nielsen et al. … However, aquatic macrophytes also exhibit faster growth than terrestrial plants (Cebrian 1999).

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What does it mean that an ecosystem is most productive?

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).