Availability of nutrients, Science

Availability of Nutrients:

The nutrients  in  the upper layers of water are constantly being taken up by  the phytoplankton, who are the producers, and then these pass on to the herbivores, and the carnivores. When these latter organisms  die,  they are either eaten up by other animals or they get decayed by  the decomposers. Some of the decomposed matter sinks  to the ocean floor.

It means, the nutrients taken up by  the producers from the upper layers of sea water are constantly being drained to the lower layers of sea water. Do you know what would happen if  the nutrients in the upper layers of water are not replenished? There would be no phytoplankton and photosynthesis; no production of food to sustain other animal life. Hence all the organisms would die.

Actually, in nature such a situation does not arise. Let us see how a constant supply of nutrients in  the upper layers of water is ensured. There are two ways:

(i) As riversend in the seas, they bring along a lot of refuse and nutrients  from the land to the water.

(ii)  'Upwelling' takes place, which is a process by which dwp, nutrient rich waters  are brought to the surface. What actually happens is that wind blows surface water on to the shores. The watex which now comes to the surface  is from below. It is cold and high in nutrient content. Regions where upwelling takes place are very productive. That's why important  commercial fishexies  in the world are situated  in such regions.  

Posted Date: 9/28/2012 5:24:57 AM | Location : United States







Related Discussions:- Availability of nutrients, Assignment Help, Ask Question on Availability of nutrients, Get Answer, Expert's Help, Availability of nutrients Discussions

Write discussion on Availability of nutrients
Your posts are moderated
Related Questions
Kepler's  Laws of Planetary Motion: Further support to the heliocentric model came from the work of Johannes Kepler at around the same time as Galileo's observations. Kepler, a

Temperature affects the _____ of sound waves !?

Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances


Q.What is the greenhouse effect? Some gases like carbon dioxide, methane, nitrous oxide prevent the escape of heat from the Earth's surface by trapping it. This increases the av

Q. List the main steps involved during post-harvest handling fresh produce? Main steps involved during post-harvest handling fresh produce are: Field processing: sorting, gr

Answer the following questions: (a) What are the objectives of the Bischoff PBPK model? What useful predictions is the model capable of making? How is the model able to transla

What is ablation? Ans)  Ablation is a technological term for the loss of snow and ice from a glacier. The process happens by a combination of the two physical processes, meltin


Question 1 Explain the Human Organ Transplantation Act and its legal implications Question 2 Discuss the regulatory requirements in setting up and running a blood bank