M5: Ecosystem Ecology - Nutrient Cycling & Retention Flashcards
What is the amount of specific nutrient in a part of ecosystem?
Nutrient Pool
What is the movement of nutrients between nutrient pools?
Nutrient flux
When absorption > release?
Nutrient sink
When release > absorption?
Nutrient source
What is the importance of phosphorus cycle?
- Energetics
- DNA/RNA structure
- Phospholipids
What cycle have the ff. characteristics?
- Low atmospheric pool
- From weathering of rocks
- Land-forming from sediment
Phosphorus cycle
What is the importance of Nitrogen Cycle?
- Amino & nucleic acids
- Chlorophyll
- Primary Production
What cycle have the ff. characteristics?
- Major Atmosphere Pool
- Biological + Lightning Fixation
- Denitrification
Nitrogen Cycle
What is the importance of Carbon cycle?
- Organic Molecules
- Global Climate Change
What cycle have the ff. characteristics?
- Photosynthesis + Respiration
- Precipitation into sediment
- Increase of atmospheric amount during fossil fuel burning
- Sequestration by living organisms
Carbon Cycle
What influences the rates of decomposition?
temperature, moisture, & chemical composition
What is the relationship of nutrient content and decomposition rate?
Directly Proportional
What are the nutrient dynamics in lakes and streams?
Not Stationary
What is the formula for spiraling length (s)?
s = (average downstream velocity of atom)(average time for atom to complete cycle)
What is the tendency to retain nutrients?
Nutrient retentiveness
What generally increases the loss of nutrients from ecosystem?
Disturbance
What moves nutrients into oceans due to runoff?
Deforestation and Landslide
What results with the high input of nutrients and proliferation of algae?
Dead Zones
What are uninhabitable for fishes due to depletion of oxygen?
Dead Zones
What is the process when organism becomes organic matter?
Decomposition
What is the process when organic matter become inorganic matter?
Mineralization
What is the shape of the graph of Mineralization?
Plateau
What happens when rate of decomposition reaches the plateau of K?
Leveled off at higher concentrations of nutrients
What is the relationship of (nutrient) spiraling length and nutrient rentiveness?
Inversely Proportional
