Biogeochemical Cycles
Process that changes ammonia back into nitrites and nitrates
Denitrification
This is the number of directions that energy flows
Trophic level
This happens to the population as you move up the trophic level
Decreases
They consume nonliving matter
Detrivores
Sedimentary rock is the largest reservoir for this cycle
Phosphorus and Carbon
Marine
This is the level where chemosynthesis bacteria would occur
1st Trophic level
Collective mass of living matter in a given place and time
Biomass
Benefits of decomposers
Enhance top layer of soil
Recycle nutrients
Reservoir accepts more material than it releases
Sink
This is one area with low net primary productivity
Deserts, tundra, open oceans
They prey on primary consumers
Secondary consumers
Shows multiple feeding relationships
Food web
Top predator eliminated can cause this problem in a food chain
Trophic cascade
Process where plants absorb nitrates or ammonium from the soil to make proteins
Assimilation
This is the energy used by heterotrophs to generate biomass
Secondary Productivity
Tertiary consumers are on this trophic level
4th trophic level
This is given off at each trophic level
Global warming is an example of a
Positive feedback loop
Increased in algae growth causes decreased in dissolved oxygen and blocks sunlight to bottom dwelling species
Terrestrial ecosystems net primary productivity increases with
Temperature and Precipitation
This animals has no predators
Apex
This level has the greatest amount of biomass
Primary producer
Body temperature regulation is an example of
Negative feedback loop