16_primary_production_3 - 1 Primary Production III Outline...

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Unformatted text preview: 1 Primary Production III Outline Monday 1. Observed Spatial Patterns in Chlorophyll Concentration and Primary Production from Satellite Data 2. Subtropical Gyre Regions 3. Equatorial Atlantic and Pacific Regions 4. Coastal Regions Wednesday (Today) 1. Westerly Wind Belt Region and the Critical Depth Concept 2. Magnitude of Global Primary Production 3. Current/Future Trends in Primary Production Research In the Westerly Wind Belt Region (c.a. 30-60 degree latitude), There is Strong Seasonal Variation in Sea-Surface Temperature and the Depth of the Seasonal Thermocline 2 Change in Seasonal Thermocline Depth Summer and Winter Differences in Mixing Depth Due to Changes in the Depth of the Seasonal Thermocline in Westerly Wind Regions Light Limitation 3 Light Limitation The Critical Depth 1. When cells are below the Compensation Depth , they lose carbon because light is to too dim to allow for positive n et p rimary p roduction (NPP) 2. The average light level that phytoplankton experience over the course of a day becomes dimmer as mixing depth increases because cells spend an increasing proportion of the day below the compensation depth in the dark. 3. When cells mix below to the Critical Depth they have spent too much of the day below the compensation depth losing carbon net loses of carbon experienced while...
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16_primary_production_3 - 1 Primary Production III Outline...

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