3-3 Cycles of matter. Recycling in the Biosphere Unlike the one-way flow of energy, Unlike the...
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Transcript of 3-3 Cycles of matter. Recycling in the Biosphere Unlike the one-way flow of energy, Unlike the...
3-3 Cycles of matter3-3 Cycles of matter
Recycling in the BiosphereRecycling in the Biosphere
• UnlikeUnlike the one-way the one-way flow of energy,flow of energy,
MATTER is recycledMATTER is recycled within and between within and between ecosystemsecosystems
• Biogeochemical Biogeochemical cyclescycles connect connect – BiologyBiology– geologygeology– chemistrychemistry
Water Water cyclecycle
• Water is essential to all lifeWater is essential to all life• Fresh water from the oceans moves into the Fresh water from the oceans moves into the
atmosphere by atmosphere by – EvaporationEvaporation condensationcondensation– Transpiration (leaves)Transpiration (leaves) precipitationprecipitation
Nutrient Nutrient cyclescycles
• Chemicals Chemicals needed by needed by living things living things to build to build tissues, carry tissues, carry out essential out essential life functionslife functions
circulatecirculate through the through the ecosystemecosystem
Carbon Carbon cyclecycle
• Carbon is Carbon is essential to essential to lifelife
• It moves out It moves out of the air into of the air into plantsplants
• Returns with Returns with burning, burning, decompositiodecomposition,respirationn,respiration
Nitrogen cycleNitrogen cycle
• N in the ground is N in the ground is changed by soil changed by soil bacteriabacteria
• Taken up by plantsTaken up by plants
• Animals Animals eateat their N their N
• Decay, feces return Decay, feces return N back to the soilN back to the soil
Nitrogen CycleNitrogen Cycle
Bacterial nitrogen fixation
N2 in Atmosphere
NH3
Synthetic fertilizer manufacturer
Uptake by producers
Reuse by consumers
Decomposition excretion
Atmospheric nitrogen fixation
Uptake by producers
Reuse by consumers
Decomposition
Decomposition excretion
NO3 and NO2
Synthetic fertilizermanufacture
PhosphorusPhosphorusCycleCycle
• P is needed for P is needed for DNA, RNADNA, RNA
• It is It is rarerare in the in the biospherebiosphere
• Most P is Most P is stored in rocks stored in rocks and ocean and ocean sedimentssediments
OceanLand
Organisms
Sediments
Limiting nutrientsLimiting nutrients
• If a nutrient is scarce, it will limit If a nutrient is scarce, it will limit growth in an ecosystemgrowth in an ecosystem
• Fertilizers supply N, P, Potassium as Fertilizers supply N, P, Potassium as they are needed for growththey are needed for growth
• TOO MUCH of a nutrient can upset TOO MUCH of a nutrient can upset the balance also: fertilizer runoff the balance also: fertilizer runoff forms algal blooms in rivers and forms algal blooms in rivers and lakeslakes