NREM 301 Quiz & N, P, C Nutrient Cycling€¦ · NREM 301. Forest Ecology & Soils. Quiz & N, P, C...
Transcript of NREM 301 Quiz & N, P, C Nutrient Cycling€¦ · NREM 301. Forest Ecology & Soils. Quiz & N, P, C...
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NREM 301Forest Ecology &
Soils
Quiz & N, P, C Nutrient Cycling
Day 26November 19,
2009
Happy Thanksgiving
Break!
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Individual Portion of
Quiz
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A
B
A – What stage of decay is this log at – provide 2 functions that if provides.
B – Why is this cavity there or how do you think it was it created – the arrow is pointing at material created by what wall that is isolating this wound from the rest of the tree?
1
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The area indicated by the red circle is found in what phase of the shifting-mosaic steady state model of succession? Briefly explain your reasons.
2
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3What stage of the stand development model is represented in this picture –briefly explain your reasoning.
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Look carefully at the photo on the left – what soil mapping unit do you think this is – briefly explain why.
This bank is along the creek below which is the small creek we walked along on Wed at the Rest Area – it is not Bear Creek or the Skunk River
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Please define the three sub cycles of the general nutrient cycle and identify the components that make up each of the three subcycles.
5a
b
c
de
fg
hi
j
k
l
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Please Hand in the
Individual Portion of
Quiz
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Group Quiz 1
Include only the applicable terms from the following words (phrases) on the diagram
1. Decomposition2. Nitrification3. Nitrobactor4. Assimilation5. Ammonification6. Leaching/Drainage Loss7. Free living bacteria 8. Denitrification9. Nitrogen Fixation10. Anaerobic11. Fertilization12. Rhizobium13. Atmospheric deposition
14. Nitrate15. Nitrosomanos16. Ammonia/Ammonium17. Nitrite18. Organic matter N19. N2 gas20. Mineralization21. Tiles22. Surface runoff23. Symbiotic N fixers24. Translocation
Diagram the nitrogen cycle for this specific location – the “open” area of the Rest Area
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Identify 5 major differencesin the N cycle between the cropped landscape and the rest area landscape
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Select either the carbon or phosphorus cycle and diagram it for the forest area below.
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Please Hand in the Group
Portion of Quiz
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Nitrogen CycleIn open area
NitrosomonasBacteria
NitrobacterBacteria
Mineralization
Uptake
Anaerobic
Free Living Bacteria - AzotobactorSymbiotic N-fixersRhizobium – Woody LegumesFrankia – Woody Non-legume
AmmoniumAmmonia (NH3)Ammonium (NH4)
Lightening
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The P cycle
Weathering Addition
60%
Organic PDecomposition
SoilSolution P
Minor Leaching
P SorbedTo Soil
Plant Uptake
Fertilizer & ManureAddition
P SorbedTo Soil
Erosion
Very Little Atmosphere
Addition
No Gaseous Loss
Loss from animal & plant harvest
Mineralization
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No Weathering Addition
All AtmosphereInput
Excreation
MovementOf Sugar
Stored as Starch
Organic C Storage &Decomposition
SoilCarbonHumus
Carbon SequestrationVery Minor Leaching
ManureAddition
Erosion
PS
RS
RS
Tree/PlantsMajor C StorageSequestration
Loss from animal & human eating – harvest of plants (lumber, corn, ethanol etc.)
Eating
RS
DyingC
StorageLitter
CO2 Carbon CycleO2 & CO2
No Plant Uptake
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Carbon Cycle
What are the major:
• Inputs?
• Sinks?
• Outputs?
Pg. 505 text
Atmosphere