2.3 -2.4 Quiz Flashcards
Steps of the nitrogen cycle
fixation, assimilation, ammonification, nitrification, and denitrification.
Where is nitrogen stored?
Organisms, soil, fossil fuels, the atmosphere, and water
How is nitrogen made available to plants?
Bacteria in soil, water, roots, lighting, and humans
What is nitrogen assimilation?
Inorganic to Organic
How do humans affect the nitrogen cycle?
Fertilizers and fossil fuels
Pathway of energy through an ecosystem
Converting light to chemical
Transferring chemical energy
Ultraviolet light to heat energy
Re-radiation of heat energy
Primary productivity
The rate at which plants produce biomass
Secondary Productivity
Biomass produced by animals
Gross primary productivity
total amount of carbon dioxide fixed by plants
Flow of energy and matter
Sun -> Co2 H2O -> Plant -> O2 C6H12O6 -> animals - Co2 H2O
Net primary productivity
Amount of energy fixed by autotrophs
How is carbon fixed in an environment
Photosynthesis
Carbon budget
Max amount of carbon to produce without too much global warming
Zonation
Gradual change across a landscape
Succession
Changes over time
Niche
Temp, rain, sun, soil, interaction
Primary succession
Stuff wasn’t there before
Secondary succession
Stuff was there before
Early stage of succesion
Low GPP
Middle stage of succession
High GPP
Late stage of succession
Ratio of NPP to respiration is equal
Steps of the carbon cycle
Photosynthesis, decomposition, respiration, and combustion
Where is carbon stored organically
Organisms and fossils
Where is carbon stored inorganically
rocks
shells
soil
CO2
