Production efficiency - ecosystem, Biology

Assignment Help:

Production Efficiency - Ecosystem

The maximum amount of solar energy harvested by plants is about 5 per cent but the average for green plants, on the whole is only a small fraction of sunlight, i.e., 0.02 per cent reaching the atmosphere. The production efficiency that is the ratio of net primary production to gross primary production (of green plants) is on the average rather high. It varies between 40 to 85 per cent. The most efficient are those plants which have low maintenance requirement due to minimum non-photosynthetic (non green) tissues, such as in grasses, algae and phytoplankton. Algae and crops like corn have an efficiency of about 80 to 85 per cent, submerged aquatic plants 60 to 75 per cent, deciduous forests about 42 per cent. Different ecosystems have different productivities.

Productivity of ecosystems depends on a variety of factors such as sunlight, temperature, rainfall and the availability of nutrients. Those situations that provide the best circumstances for plant growth are the most productive. Warm, moist, sunny areas with high levels of nutrients in the soil are ideal. Some areas have low productivity because one of the essential factors is missing. Deserts have low productivity because water is scarce, arctic areas too have low productivity because temperature is low, and open oceans also have low productivity because nutrients are in short supply. Coral reefs and tropical rain forests have high productivity. Marshes and estuaries are-highly productive since waters running into them are rich in the nutrients and they also get enough light.


Related Discussions:- Production efficiency - ecosystem

Rules followed by diabetic patient, Q Show Rules followed by diabetic patie...

Q Show Rules followed by diabetic patients? A  "sick day" is any health problem diabetic patient may have. This could include a common cold, infection, diarrhoea, fever, injury

What is the rh typing of the mother, What is the Rh typing of the mother an...

What is the Rh typing of the mother and of the fetus in the hemolytic disease of the newborn? In the hemolytic disease of the newborn the mother is Rh- and the fetus Rh+. In th

Explain the importance for a hypothesis, What's the difference between theo...

What's the difference between theory and hypothesis and explain the importance for a hypothesis to be testable and falsifiable in order for the scientific method to be applied?

Enzyme activity, Enzyme Activity Enzymes are biomolecules which catalyz...

Enzyme Activity Enzymes are biomolecules which catalyze (i.e. increase the rates of) chemical reactions. Almost all enzymes are proteins. In enzymatic reactions, the molecules

Which type of ecological interaction is competition, Q. What is competition...

Q. What is competition? Which type of ecological interaction is competition? The Competition is the ecological interaction in which the individuals explore the similar ecologic

How do embryos of placental mammals excrete nitrogen wastes, How do embryos...

How do embryos of placental mammals excrete nitrogen wastes? Placental animals, as well as embryos, excrete urea. In the adult placental mammal urea is excreted by the urine.

Coronal disassembly devices-grasping instruments, Grasping instruments ...

Grasping instruments -Plier or clamp forceps -put piece of rubber in the plier                                 -applied on the buccal and lingual surface -make pressure to

Why are grasshopper is said to show male heterogamity, a) Why are grasshopp...

a) Why are grasshopper and Drosophila said to show male heterogamity? Describe. b) Define female heterogamity with the help of an example.

Describe organs of female reproductive system, Q. What are the organs that ...

Q. What are the organs that are part of the female reproductive system? The organs that constitute the female reproductive system are the ovaries, the uterus, the Fallopian tub

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd