biogeochemical cycles
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Biogeochemical Cycles. Mr. Skirbst Life Science Topic 19. Cycles. Cycles. Daily Rhythms. Cycles. Daily Rhythms diurnal – active at day. Cycles. Daily Rhythms diurnal – active at day nocturnal – active at night. Cycles. Lunar Rhythms. Cycles. Lunar Rhythms - PowerPoint PPT PresentationTRANSCRIPT
BiogeochemicalCycles
Mr. SkirbstLife Science
Topic 19
Cycles
CyclesDaily Rhythms
CyclesDaily Rhythms
diurnal – active at day
CyclesDaily Rhythms
diurnal – active at daynocturnal – active at night
CyclesLunar Rhythms
Cycles
Lunar Rhythmstides – high / lowmonthly cycles
CyclesAnnual Rhythms
CyclesAnnual Rhythms
seasonal changes
CyclesAnnual Rhythms
seasonal changesmigration – annual
movement from breeding to feeding grounds
CyclesAnnual Rhythms
seasonal changeshibernation – winter
resting state(Latin: hibernus – “winter”)
CyclesAnnual Rhythms
seasonal changesestivation – summer
resting state(Latin: aestivus – “summer”)
Cycles of MatterFlow of matter (chemicals) from non-living (abiotic) to living (biotic) parts of an ecosystem, and back again
Cycles of MatterWater Cycle:
- evaporation (liquid to gas)
Cycles of MatterWater Cycle:
- evaporation- condensation (gas to liquid)
(cloud formation)
Cycles of MatterWater Cycle:
- evaporation- condensation- precipitation (rain, snow, sleet, hail, fog)
Cycles of MatterWater Cycle:
- evaporation- condensation- precipitation- infiltration / runoff (groundwater, streams, oceans)
Water Cycle
Cycles of MatterOxygen – Carbon Cycle:
Cycles of MatterOxygen – Carbon Cycle:
- photosynthesis (producers: take CO2 O2)
Cycles of MatterOxygen – Carbon Cycle:
- photosynthesis (producers: take CO2 O2)
- respiration (consumers: take O2 CO2)
Carbon – Oxygen Cycle
Cycles of MatterNitrogen Cycle:
Cycles of MatterNitrogen Cycle:
- fixation: bacteria change “free” N from air to N-compounds in soil
Cycles of MatterNitrogen Cycle:
- metabolizing: N-compounds moved from soil to plants to animals
Cycles of MatterNitrogen Cycle:
- decomposition: bacteria “free” N back to air again
Nitrogen Cycle
Cycles of ChangeEcological Succession:
- gradual change from one community to another
Cycles of ChangeEcological Succession:
- gradual change from one community to another
Climax Community:
Cycles of ChangeEcological Succession:
- gradual change from one community to another
Climax Community:- a stable community of organisms
Cycles of ChangeEcological Succession: