Explain briefly and deeply about, Nitrogen Cycle in ecosystem, and their significant roles in rangelands plant community.within conclusion and reference.

Answer 1

The nitrogen cycle is a crucial process in the ecosystem that involves the movement and transformation of nitrogen in various forms, such as nitrate, nitrite, ammonia, and organic nitrogen compounds. Nitrogen is an essential nutrient for plant growth and plays a vital role in the functioning of ecosystems.

In the nitrogen cycle, nitrogen gas in the atmosphere is converted into ammonia by nitrogen-fixing bacteria through a process called nitrogen fixation. Plants can take up ammonia and other forms of nitrogen from the soil, using it to build proteins and nucleic acids essential for their growth and development. When plants are consumed by herbivores, the nitrogen is transferred up the food chain. Decomposers break down organic matter, releasing nitrogen back into the soil in the form of ammonium, which can then be taken up by plants again.

In rangeland ecosystems, the nitrogen cycle is especially important for the health and productivity of plant communities. Nitrogen availability can limit plant growth and productivity in these systems, as rangelands are often nutrient-poor environments. Nitrogen-fixing plants such as legumes play a key role in increasing nitrogen levels in the soil through symbiotic relationships with nitrogen-fixing bacteria. These plants can improve soil fertility and provide additional nitrogen for other plants in the community.

Overall, the nitrogen cycle is essential for the functioning of ecosystems, including rangelands. It helps regulate nutrient availability and plays a crucial role in plant growth and productivity. Understanding the nitrogen cycle in rangeland ecosystems can help improve management practices to enhance soil fertility and support healthy plant communities.

Reference:
Bardgett, R. D., & Walker, L. R. (2010). Impact of coloniser plant species on the development of decomposer microbial communities following deglaciation. Soil Biology and Biochemistry, 42(5), 805-813.