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

Egestion of food, EGESTION To give out undigested food from alimenta...

EGESTION To give out undigested food from alimentary canal. Faeces can remain in colon for 36 hrs. then moving into rectum by gastro-colic reflex. Faeces consists of 3

Explain about the iron - micro minerals, Explain about the Iron - Micro Min...

Explain about the Iron - Micro Minerals? Iron was a familiar metal even in the ancient civilization. In India, iron implements made their appearance in between 1300-1000 BC and

Preservatives-sulphur dioxide-bisulphites and sulphites, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Sucession, what is the model of tolerence mpdel of sucession

what is the model of tolerence mpdel of sucession

Demonstrate the structure of mitochondria, Demonstrate the structure of mit...

Demonstrate the structure of mitochondria The structure of mitochondria has been examined in great detail with the aid of the electron microscope, and it is now possible to des

Regulatory factors, 1. Describe how the hypothalamus regulates the secretio...

1. Describe how the hypothalamus regulates the secretion of anterior pituitary hormones and identify all of the individual hypothalamic regulatory factors. Describe how the hypotha

Obelia, what are the economic importance of obelia?

what are the economic importance of obelia?

Metabolic processes, Metabolic Processes Living things are complex...

Metabolic Processes Living things are complex and yet, the cell is the basic unit of life New cells result of mitosis cell division DNA controls all cell functions

Vertebrate eye - adult eye, Vertebrate Eye - Adult Eye There are no m...

Vertebrate Eye - Adult Eye There are no main differences in the structure or composition of the eyes among different vertebrates. This should be clear to you from the diagram

Why pluricellular organisms are produced by serial mitosis, From the zygote...

From the zygote, pluricellular organisms are produced by serial mitosis. Would this formation be possible if every cell made by mitosis had an identical life in relation to its ant

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