Ecosystem structure and function lecture (Kindly follow the Essay

Ecosystem structure and function lecture (Kindly follow the instructions) not an - Essay Example The energy as a result of cellular respiration is called net primary productivity. Decomposers feed on the waste product. As one moves up the next energy level, only 10% of the energy moves to the next level with the rest been lost as heat (Boag, 1- 7). The net primary productivity of ecosystems such as marine ecosystems is limited by certain nutrients like nitrogen and phosphorus. Pyramids of biomass and energy change between ecosystems. Some pyramids of biomass are inverted. Biomagnification is as a result of the concentration of pollutants as they move from lower to higher trophic levels. The nutrients in an ecosystem are transferred from organism to organism through assimilation, consumption and decomposition. Factors that influence the rate of nutrient cycling in an ecosystem include decomposition of detritus limits the rate of movement of the nutrients through an ecosystem and the abundance of decomposers in terms of biomass. The carbon cycle involves the movement of carbon among terrestrial ecosystems, oceans and atmosphere. Photosynthesis and respiration are the main movers of carbon. Carbon dioxide is a greenhouse gas that traps heat on earth (Boag, 8 – 14). The lecture was full of intensity and concentration was required throughout without which vital concepts were missed. The reason why I chose to attend this lecture was because the topic on ecology is related to my field of study which is Microbiology and I have an interest in knowing the nature of the courses I shall attend during my graduate program. This lecture is related to my field of study through the study of the nature of organisms, how they coexist and relate to their environment. In this lecture, I already knew about the four components of the ecosystem. I learnt a new concept termed as biomagnifications. I learnt that my ability to follow take notes in a typical academic lecture was excellent at the beginning, but as the lecture went on, the