Nutrient Cycles

Information about Nutrient Cycles

Published on December 15, 2009

Author: dantescience

Source: authorstream.com

Content

NUTRIENT CYCLES : M.BREGAR (DANTE C.S.S.) 1 NUTRIENT CYCLES Nutrient Cycles : M.BREGAR (DANTE C.S.S.) 2 Nutrient Cycles These are cycles in which matter (atoms) moves through the (1) living parts and (2) non-living parts of an environment Slide 3: M.BREGAR (DANTE C.S.S.) 3 Nutrient Cycles : M.BREGAR (DANTE C.S.S.) 4 Nutrient Cycles Matter is not created or destroyed, but is RECYCLED  changes form! Slide 5: M.BREGAR (DANTE C.S.S.) 5 Matter Changing Form : M.BREGAR (DANTE C.S.S.) 6 Matter Changing Form Classifying Matter : M.BREGAR (DANTE C.S.S.) 7 Classifying Matter All matter can be: Organic Substances Matter in actual living tissue Always contain CARBON & HYDROGEN & OXYGEN atoms Classifying Matter : M.BREGAR (DANTE C.S.S.) 8 Classifying Matter Inorganic Substances: All non-living matter Ex. Air, soil, water, etc. Do not contain combinations of CARBON & HYDROGEN atoms Organic or Inorganic : M.BREGAR (DANTE C.S.S.) 9 Organic or Inorganic COW contains ORGANIC MATTER Organic or Inorganic : M.BREGAR (DANTE C.S.S.) 10 Organic or Inorganic ROCKS contain INORGANIC MATTER Organic or Inorganic : M.BREGAR (DANTE C.S.S.) 11 Organic or Inorganic HAMBURGER MEAT contains ORGANIC MATTER Organic or Inorganic : M.BREGAR (DANTE C.S.S.) 12 Organic or Inorganic CORN ON THE COB contains ORGANIC MATTER Organic or Inorganic : M.BREGAR (DANTE C.S.S.) 13 Organic or Inorganic GLASS OF WATER contains INORGANIC MATTER Organic or Inorganic : M.BREGAR (DANTE C.S.S.) 14 Organic or Inorganic CARBON DIOXIDE (CO2) contains INORGANIC MATTER Slide 15: M.BREGAR (DANTE C.S.S.) 15 There are many different cycles…….. The Nitrogen Cycle : M.BREGAR (DANTE C.S.S.) 16 The Nitrogen Cycle Atmospheric nitrogen Atmospheric fixation and deposition Animal manures and biosolids Industrial fixation (commercial fertilizers) Crop harvest Volatilization Denitrification Runoff and erosion Leaching Organic nitrogen Ammonium (NH4) Nitrate (NO3) Plant residues Biological fixation by legume plants Plant uptake Immobilization Mineralization Input to soil Component Loss from soil - + The Phosphorus Cycle : M.BREGAR (DANTE C.S.S.) 17 The Phosphorus Cycle Animal manures and biosolids Mineral fertilizers Crop harvest Runoff and erosion Leaching (usually minor) Organic phosphorus Microbial Plant residue Humus Primary minerals (apatite) Plant residues Plant uptake Soil solution phosphorus HPO4-2 H2PO4-1 Secondary compounds (CaP, FeP, MnP, AlP) Dissolution Precipitation Mineral surfaces (clays, Fe and Al oxides, carbonates) Weathering Adsorption Mineralization Immobilization Desorption Input to soil Component Loss from soil Atmospheric deposition The Potassium Cycle : M.BREGAR (DANTE C.S.S.) 18 The Potassium Cycle Animal manures and biosolids Mineral fertilizers Crop harvest Runoff and erosion Leaching Soil solution potassium (K+) Plant residues Plant uptake Mineral potassium Fixed potassium Exchangeable potassium Input to soil Component Loss from soil The Sulfur Cycle : M.BREGAR (DANTE C.S.S.) 19 The Sulfur Cycle Animal manures and biosolids Mineral fertilizers Crop harvest Runoff and erosion Leaching Absorbed or mineral sulfur Plant residues Plant uptake Sulfate Sulfur (SO4) Atmospheric sulfur Elemental sulfur Organic sulfur Immobilization Mineralization Bacterial reduction Bacterial oxidation Oxidation SO2 gas Reduced sulfur Input to soil Component Loss from soil Volatilization Atmospheric deposition -

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