Nutrients%20Cycle

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Nutrients Cycle

• Nutrients and Matter are continually used in an
  ecosystem over and over again.

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• Energy flows in one direction, but matter recycles

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Nutrient Cycles

• Purpose allows for the natural recycling of
  nutrients between living and non-living things in
  ecosystems
• Four Main Cycles
• Water Cycle
• Carbon Cycle
• Nitrogen Cycle
• Phosphorus Cycle

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Water Cycle Clip

• http//teacher.scholastic.com/activities/studyjams
  /water_cycle/

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Water Cycle
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Water Cycle -Terms to Know

• Evaporation
• Transpiration (Evapotranspiration)
• Precipitation
• Run Off
• Percolation (Groundwater Seepage)
• Condensation
• Solar Energy
• Water Vapor (Clouds)

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Water Cycle Main Concepts

• Water evaporates from bodies of water into the
  atmosphere with the help of solar energy (Sun)
• Moisture is held in the atmosphere in the
  formation called clouds- condensation
• When the atmosphere is saturated with moisture
  the water is released in some form of
  precipitation
• Water is returned back down. Some empties into
  bodies of water, while some is absorbed
  (infiltration)into the Earth and some runs off
  land areas back into larger bodies of water

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Carbon Cycle
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(No Transcript)
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Carbon Cycle Terms to Know

• Photosynthesis
• Cellular Respiration
• Decomposition
• Burning of Wood and Fossil Fuels
• Decomposers/Detritivores
• Detritus (Matter the Detritivores Use for
  Energy)

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Carbon Cycle Main Concepts

• Carbon enters the atmosphere through fossil fuel
  release, release of carbon dioxide through
  cellular respiration, and waste of decaying
  matter
• Carbon is then used by plants to carry out
  photosynthesis
• Dead plants and animals return back into the
  ground which returns carbon back to Earth. Coal
  and oil also have carbon which allow carbon to
  always be present in the Earth

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Carbon Cycle Video Clip

• http//www.youtube.com/watch?vU3SZKJVKRxQ

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Nitrogen Cycle
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(No Transcript)
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Nitrogen Cycle Terms to Know

• Assimilation
• Nitrogen-Fixation
• Nitrogen-Fixing Bacteria
• Denitrification
• Denitrifying Bacteria
• Root Nodules
• Ammonification

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Nitrogen Cycle Main Concepts

• Nitrogen is present in the atmosphere as a
  natural component of air due to volcanic
  activity, lightning, release by algae (78)
• Nitrogen is present in the soil, but must be
  FIXED through nitrogen fixation (denitrification,
  and ammonification) in order to be released into
  the atmosphere
• Nitrogen fixing bacteria allow nitrogen to be
  altered in the Earth so that it is taken up in
  plant root systems (assimilation).
• When organisms eat plants, the nitrogen is taken
  in by them and can be release back into the Earth
  through waste products

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Nitrogen Cycle Animation

• http//www.classzone.com/books/ml_science_share/vi
  s_sim/em05_pg20_nitrogen/em05_pg20_nitrogen.swf

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Phosphorus Cycle
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Phosphorus - Terms to Know

• Geologic Uplifting
• Leaching
• Chemical Precipitation
• Sedimentation
• Weathering
• Runoff

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Phosphorus Cycle

• Two Overall Paths
• Path One (Breakdown of Rock)
• Rocks release phosphous through the weathering of
  rock over time on land and in water (leaching)
• Phosphorus enters water systems in solution form
• Over many years the phosphorus settles at the
  floor of water systems and forms rock
• Rock may uplift after many years to expose rock
  which has phosphorus

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Phosphorus Cycle

• Path Two- Animals
• Phosphorus is locked in soil and is taken in by
  plant root systems
• Animals eat plants and take in the phosphorus
• When animals die, detritivores (worms) break down
  dead matter and release the phosphorus back into
  the soil.
• Can be used again or leached back into water
  systems

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Phosphorus cycle animation

• http//www.wadsworthmedia.com/biology/starr_udl11_
  tour/phos_anim.html