Amount of plant material alive at any one time Can be applied to phytoplankton, algae, or all plants

Same as photosynthesis Biological process of creating high energy organic material from CO2 H2O and other nutrients using solar energy 6H2O + 6CO2 yields C6H12O6+ 6O2

Gross primary production

Total amount of organic material produced in the sea by photosynthesis

Net primary production

Any excess production used for growth, reproduction, and losses due to death

Harvest method ( measuring primary production)

MEASURES BIOMASS AND EXPRESS AS BIOMASS PER UNIT AREA PER UNIT TIME CAN BE DESTRUCTIVE

Light and dark bottles ( measuring primary production)

Measure O2 in each, dark represented O2 lost to respiration, light was total gained Add them together to get GPP Older method

Nielsen method ( C14) measuring primary production

Measures amount of radioactive C14 assimilated by PPK In their tissues Is a measure of NPP Newer method

Chlorophyll A method ( measuring Primary production)

Measure amount of chlorophyll present in a certain area using satellites Assumes a direct relationship between amount of chlorophyll and rate of photosynthesis This is called remote sensing

Any condition that exceeds limits of tolerance or doesnât satisfy basic material needs of an organisms and establishes a check on further population growth

Light ( factor affecting pp)

Must remain in photic zone Zone depth changes due to atmosphere, angle of sun, and water transparency

Reduction of photosynthesis rates due to too much light Organisms adjusts to light intensity

Nutrient requirements ( factor)

Calcium for calcium shells Silicon for silica shells CHNOPS Trace elements- elements needed in minute amounts IRON, Maganese, cobalt, zinc, copper

Many nutrients lie below photic zone. Mixing occurs due to seasonal temperature changes ( CONVECTIVE MIXING) Langmuir cells- parallel Pairs of small counter rotating convection cells driven by surface winds

Phytoplankton eaten by zooplankton which excrete or die and are then recycled into usable substances by Bacteria

Temperature ( factor)

Pp has an optimal temperature range

Carbon dioxide factor

CO2 concentration Not usually a problem in the ocean but plenty available

All PP measurements change in response to seasonal differences in light intensity

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Primary productivity

Question	Answer
Standing crop	Amount of plant material alive at any one time Can be applied to phytoplankton, algae, or all plants
Primary production	Same as photosynthesis Biological process of creating high energy organic material from CO2 H2O and other nutrients using solar energy 6H2O + 6CO2 yields C6H12O6+ 6O2
Gross primary production	Total amount of organic material produced in the sea by photosynthesis
Net primary production	Any excess production used for growth, reproduction, and losses due to death
Harvest method ( measuring primary production)	MEASURES BIOMASS AND EXPRESS AS BIOMASS PER UNIT AREA PER UNIT TIME CAN BE DESTRUCTIVE
Light and dark bottles ( measuring primary production)	Measure O2 in each, dark represented O2 lost to respiration, light was total gained Add them together to get GPP Older method
Nielsen method ( C14) measuring primary production	Measures amount of radioactive C14 assimilated by PPK In their tissues Is a measure of NPP Newer method
Chlorophyll A method ( measuring Primary production)	Measure amount of chlorophyll present in a certain area using satellites Assumes a direct relationship between amount of chlorophyll and rate of photosynthesis This is called remote sensing
Limiting factor	Any condition that exceeds limits of tolerance or doesnât satisfy basic material needs of an organisms and establishes a check on further population growth
Light ( factor affecting pp)	Must remain in photic zone Zone depth changes due to atmosphere, angle of sun, and water transparency
Photo-inhibition	Reduction of photosynthesis rates due to too much light Organisms adjusts to light intensity
Nutrient requirements ( factor)	Calcium for calcium shells Silicon for silica shells CHNOPS Trace elements- elements needed in minute amounts IRON, Maganese, cobalt, zinc, copper
Nutrients continue	Many nutrients lie below photic zone. Mixing occurs due to seasonal temperature changes ( CONVECTIVE MIXING) Langmuir cells- parallel Pairs of small counter rotating convection cells driven by surface winds
Grazing ( factor)	Phytoplankton eaten by zooplankton which excrete or die and are then recycled into usable substances by Bacteria
Temperature ( factor)	Pp has an optimal temperature range
Carbon dioxide factor	CO2 concentration Not usually a problem in the ocean but plenty available
Seasonal patterns	All PP measurements change in response to seasonal differences in light intensity

Created by: Iamnotmaddy

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