Net Primary Productivity
Cellular Respiration
Energy is ATP
Photosynthesis
Energy is ATP
Gross Primary Productivity
The total amount of solar energy that producers in an ecosystem capture via photosynthesis over a given amount of time Analogy: NPP as the actual amount of the plants paycheck it keeps after taxes
Organic Compounds
compounds that contain carbon that form the basis of living matter excluding carbonates, bicarbonates, carbon dioxide, carbon monoxide
Note
higher productivity = higher biodiversity
Units
kcal / m2 / yr. energy Area Time
productivity
more productivity= diverse animal life high NPP= water availability, higher temps, nutrient availability
Respiration Loss (RL)
plants use up some of the energy they generate via photosynthesis by doing cell respiration (internal transportation Analogy: RL as taxes plants need to pay
Ecological Efficiency
portion of incoming solar energy is captured by plants and converted into biomass (NPP or available food)
Primary Productivity
rate at which organic matter is created by producers in an ecosystem over a period of time
insolation
solar radiation received in the earths atmosphere or a its surface -50% of isolation reaches earths surface
Process of Net Primary Productivity (FRQ)
the total (sunlight) minus the loss through respiration the total solar energy coming in and converted to usable energy and what is lost by respiration and what is left over is the NPP
relationship between primary productivity and biodiversity (FRQ)
tropical rainforest turning sunlight into organic compounds due to the variety of plants and animals
Efficiency Formula
NPP = ------------------ X 100 isolation energy
Net Primary Productivity (NPP)
NPP = GPP - RL amount of energy (biomass) for consumers after plants have used some for respiration
