Nutrients Cycle Nutrients and Matter are continually used in an ecosystem over and over again.
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Transcript of Nutrients Cycle Nutrients and Matter are continually used in an ecosystem over and over again.
![Page 1: Nutrients Cycle Nutrients and Matter are continually used in an ecosystem over and over again.](https://reader033.fdocuments.us/reader033/viewer/2022061505/56649dbe5503460f94ab1672/html5/thumbnails/1.jpg)
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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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?v=U3SZKJVKRxQ
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Nitrogen Cycle
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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/vis_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