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Primary Productivity
Effect
•The effect of abiotic factors(wind, currents,
topography and dissolved nutrients
ON
•Biotic processes (photosynthesis)
Measured by
•dissolved O2 levels (obs)
•Chlorophyll concentration (satellite)
•Temperature (obs)
Background
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Photosynthesis
Trophic Levels
Chemistry (dissolved oxygen)
Earth Science (topography, currents)
Physics (wind, energy transformations)
Activity
• Take a given geographic location
(Monterey Bay) and find two areas to
compare productivity – High verses low.
The more diverse the better. Use satellite data for color
images to determine areas
Why is there a difference?
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Possibilities
Look at wind patterns (obs)
Look at currents (obs)
Look at topography (GIS)
Look at dissolved nutrients (LOBO)
Look at surface temperature (obs)
Hypothesis
• Is there data to support the differences and
what would the Hypothesis be.
• What is the explanation?
(eg. Is cold temperature related to productivity?)
Is temperature related to upwellings/currents?
Confirmation of Satellite Images
• Chemistry –
– Dissolved O2
– Dissolved nutrients – phosphates, nitrates
Further Analysis
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Graph dissolved O2 vs. sunlight
Graph O2 vs. depth
Graph productivity vs temp
Look at algal blooms and nutrient runoff
Ecosystem energy movement
– Sun – Producers
– Breakdown by bacteria