Abiotic Nutrient Cycles n Abiotic Nonliving components essential
Abiotic- Nutrient. Cycles n Abiotic – Non-living components essential to all environments. – Water cycle – carbon cycle – nitrogen cycle – phosphorous
Cycles of Matter – Water Cycle Condensation Precipitation Evaporation Transpiration Runoff Seepage Root Uptake
Nitrogen Cycle
Nitrogen Fixation organisms convert gas into useable form. The Reaction N 2 + 3 H 2 2 NH 3 is ammonia
Ammonification – bacteria and fungi producing ammonia.
Plants use Nitrate compounds
Nitrogen gas in atmosphere Ammonia Nitrites and Nitrates
Denitrification – puts Nitrogen back into the air
n Plants need Nitrogen for: 1. Protein 2. Chlorophyll What percent of the atmosphere is Nitrogen gas? 78% Plants can NOT use N 2 from the air
Carbon Cycle CO 2 in Atmosphere CO 2 in Ocean
Increasing atmospheric CO 2 levels as measured in the atmosphere and ice cores. The amount of net carbon increase in the atmosphere, compared to carbon emissions from burning fossil fuel.
PHOSPHOROUS CYCLE (not in the air) Limiting Nutrient – a substance required by organisms and without they will net grow and develop. n Import for making DNA and ATP n
Sources of phosphates n Cow manure n Yard / crop fertilizers n Soaps and detergents n Sewage treatment plants
That’s it, any questions? Homework: Read the excerpt from “ A Sand County Almanac” and diagram two cycles of “X. ”
- Slides: 14