Download presentation
Presentation is loading. Please wait.
1
Biogeochemical Cycles
Gaseous – O,N,C Sedimentary – P Combo - S
2
Reservoirs of Elements
Atmosphere Reservoir: gaseous state in both atmospheric in oceans Hydrosphere Reservoir Biosphere Reservoir: Organic matter in plants and animals Sedimentary Reservoir: two phases Salt solutions Rock
3
Flux This is the exchange of nutrients between reservoirs
The rate of recycling is influenced by the uptake of nutrients by primary producers and the rate of nutrient release by decomposers
4
Carbon Dioxide-Oxygen Cycle
5
Carbon Sedimentary: Carbon containing minerals in rocks (CaCO3)
Main nonliving storehouse Main forms in living organisms Other nonliving storehouse Sedimentary: Carbon containing minerals in rocks (CaCO3) Carbohydrates (CHs0)n and all other organic molecules Hydrologic: Dissolved carbonate (CO32-) and bicarbonate (HCO3-) Atmospheric: carbon dioxide (CO2)
7
Hydrologic (Water) Cycle
8
Nitrogen Atmospheric: nitrogen gas (N2)
Main nonliving storehouse Main forms in living organisms Other nonliving storehouse Atmospheric: nitrogen gas (N2) Proteins and other nitrogen-containing organic molecules Hydrologic: dissolved ammonium (NH4+), nitrate (NO3-), and nitrite (NO2-) in water and soils
11
Phosphorus Sedimentary: phosphate (PO43-) containing minerals in rocks
Main nonliving storehouse Main forms in living organisms Other nonliving storehouse Sedimentary: phosphate (PO43-) containing minerals in rocks DNA, RNA, ATP, and phospholipids Hydrologic: dissolved phosphate (PO43-)
12
Phosphorus Cycle
13
Sulfur Sedimentary: rocks (pyrite) and minerals (sulfate (SO42-)
Main nonliving storehouse Main forms in living organisms Other nonliving storehouse Sedimentary: rocks (pyrite) and minerals (sulfate (SO42-) Sulfur containing amino acids in most proteins, some vitamins Atmospheric: hydrogen sulfide (H2S), sulfur dioxide (SO2), sulfuric acid (H2SO4) Hydrologic: sulfate (SO42-) and sulfuric acid
15
Nutrient Recycling and Energy Flow through an Ecosystem
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.