There is 78% nitrogen in atmosphere. But this cannot be taken in by the organisms. It needs to be fixed as nitrates and then utilised. This cycle is divided into four phases - nitrogen fixation, ammonification, nitrification, and denitrification (Fig. 12). Phase # 1. Nitrogen Fixation: Fixation of nitrogen takes place by atmospheric and biological agents. Other than this it [...]
In this article we will about the importance of sunlight in an ecosystem. Sunlight is a major part of abiotic conditions in an ecosystem. The sun is the primary source of energy on our planet. Above infrared in frequency comes visible light. The Sun emits its peak power in the visible region, although integrating the entire emission power spectrum through [...]
In this article we will discuss about the biological nitrogen cycle, explained with the help of a diagram. Ecosystems continually exchange energy and carbon with the environment; mineral nutrients, on the other hand, are mostly cycled back and forth between plants, animals, microbes and the soil. Most nitrogen enters into ecosystems through biological nitrogen fixation. This is deposited through precipitation, [...]