nutrient cycling Flashcards
what kind of service is nutrient cycling
supporting service
what is nutrient cycling
the movement of elements within and between the living (biotic) and non-living (biotic) parts of the ecosystem
what drives nutrient cycling
photosynthesis
describe how photosynthesis drives nutrient cycling
plants use simple carbon chains formed during photosynthesis for energy to build plant components. during the building of complex compounds, other nutrients are acquired from the soil incorporated into plant tissue
during the building of complex organic compounds what some other nutrients are incorporated into plant tissues
N,P,K,S,Ca,Mg,etc..
eventually, plant tissue is returned to the soil and microorganisms decompose the organic materials what happens as decomposition proceeds
1) the nutrients previously incorporated into plant structures are released 2) nutrients are exchanged between living organisms through the food web but can also be mineralized into inorganic forms 3) nutrients are continually cycling from the living to nonliving realms