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BIO 150.01 > M5: Ecosystem Ecology - Nutrient Cycling & Retention > Flashcards

M5: Ecosystem Ecology - Nutrient Cycling & Retention Flashcards

1
Q

What is the amount of specific nutrient in a part of ecosystem?

A

Nutrient Pool

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2
Q

What is the movement of nutrients between nutrient pools?

A

Nutrient flux

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3
Q

When absorption > release?

A

Nutrient sink

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4
Q

When release > absorption?

A

Nutrient source

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5
Q

What is the importance of phosphorus cycle?

A
  1. Energetics
  2. DNA/RNA structure
  3. Phospholipids
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6
Q

What cycle have the ff. characteristics?
- Low atmospheric pool
- From weathering of rocks
- Land-forming from sediment

A

Phosphorus cycle

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7
Q

What is the importance of Nitrogen Cycle?

A
  1. Amino & nucleic acids
  2. Chlorophyll
  3. Primary Production
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8
Q

What cycle have the ff. characteristics?
- Major Atmosphere Pool
- Biological + Lightning Fixation
- Denitrification

A

Nitrogen Cycle

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9
Q

What is the importance of Carbon cycle?

A
  1. Organic Molecules
  2. Global Climate Change
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10
Q

What cycle have the ff. characteristics?
- Photosynthesis + Respiration
- Precipitation into sediment
- Increase of atmospheric amount during fossil fuel burning
- Sequestration by living organisms

A

Carbon Cycle

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11
Q

What influences the rates of decomposition?

A

temperature, moisture, & chemical composition

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12
Q

What is the relationship of nutrient content and decomposition rate?

A

Directly Proportional

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13
Q

What are the nutrient dynamics in lakes and streams?

A

Not Stationary

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14
Q

What is the formula for spiraling length (s)?

A

s = (average downstream velocity of atom)(average time for atom to complete cycle)

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15
Q

What is the tendency to retain nutrients?

A

Nutrient retentiveness

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16
Q

What generally increases the loss of nutrients from ecosystem?

A

Disturbance

17
Q

What moves nutrients into oceans due to runoff?

A

Deforestation and Landslide

18
Q

What results with the high input of nutrients and proliferation of algae?

A

Dead Zones

19
Q

What are uninhabitable for fishes due to depletion of oxygen?

A

Dead Zones

20
Q

What is the process when organism becomes organic matter?

A

Decomposition

20
Q

What is the process when organic matter become inorganic matter?

A

Mineralization

21
Q

What is the shape of the graph of Mineralization?

A

Plateau

22
Q

What happens when rate of decomposition reaches the plateau of K?

A

Leveled off at higher concentrations of nutrients

23
Q

What is the relationship of (nutrient) spiraling length and nutrient rentiveness?

A

Inversely Proportional

BIO 150.01 (13 decks)

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