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

What are protein hydrolysates, What are protein hydrolysates? Proteins...

What are protein hydrolysates? Proteins that have been treated with enzymes to break them down into amino acids or shorter peptides are referred to as protein hydrolysates. Pr

What is gingival inflammation, What is Gingival Inflammation Areas of o...

What is Gingival Inflammation Areas of overt inflammation should be identified and the etiology investigated to initiate proper treatment.

Silent myocardial ischaemia, Q. Silent Myocardial Ischaemia? Ans. ...

Q. Silent Myocardial Ischaemia? Ans. This deals primarily with those who have never had symptoms recognized as being of cardiac origin. Others, who have had recognized myo

International support to control hpai and other tads, International support...

International support to control HPAI and other TADs In 2008, a new global approach called "One World, One Health" was defined by the four international technical agencies, i.e

Regulation of pyruvate kinase, Regulation of pyruvate kinase, pyruvate carb...

Regulation of pyruvate kinase, pyruvate carboxylase and PEP carboxykinase A) In liver,  pyruvate  kinase  is inhibited  by high levels  of ATP and alanine  so which  glycolysis

Define atherosclerosis, Q. Explain Atherosclerosis? Atherosclerosis is ...

Q. Explain Atherosclerosis? Atherosclerosis is one of the most important causes of morbidity and mortality in developed as well as in developing countries. Atherogenesis occurs

External budgets - nutrient budgets, External budgets - Nutrient Budgets ...

External budgets - Nutrient Budgets In contrast the external budgets pertain to the input and output of the entire ecosystem in relation to other ecosystems. For instance volc

What is lap design, Lap design There are many different flap designs f...

Lap design There are many different flap designs for implant surgery. In practically all situations a mid-crestal incision can be employed (Fig). This is especially so when th

How are reptilia characterized, Q. Class Reptilia identity card. How are th...

Q. Class Reptilia identity card. How are they characterized according to examples of representing beings, basic morphology, skin, respiration, circulation, nitrogen waste, thermal

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