Primary Productivity

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Primary Productivity in the Sea
Dr. Ouida W. Meier Marine Biology 475 Spring 2005
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Primary Productivity rate of formation of
energy-rich organic compounds from inorganic
materials. This is usually the same thing as
photosynthesis, but can also be
chemosynthesis. Gross Primary Productivity
(GPP) total amount of organic material fixed in
the primary productivity process Net Primary
Productivity (NPP) amount of total production
left to support other trophic levels after losses
from plant respiration
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• Open Ocean
• Classical food web
• Seasonality
• Microbial loop
• Polar seas
• Rocky Intertidal
• Kelp forests
• Salt Marsh communities
• Seagrass communities
• Mangrove forests
• Coral Reefs

Primary Productivity
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• Primary Productivity in the Open Ocean
• Classical food web
• Seasonality
• Microbial loop

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Photosynthesis as a function of latitude in three
seasons
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Photosynthesis as a function of light intensity
in phytoplankton
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Compensation depth and phytoplankton density
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Phytoplankton and Zooplankton Seasonality
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Primary productivity and latitude Global, Land,
and Sea
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Zooplankton Seasonality North Atlantic and North
Pacific Oceans
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Zooplankton Daily (Nightly) Vertical Migration
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Contributions of Nanophytoplankton to Primary
Productivity
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The Microbial Loop
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The Microbial Loop in the Pelagic Food Web
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Areas of High Primary Productivity Can Be Patchy
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Primary Productivity Outside of the Open Ocean
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Primary Productivity in Sea Ice
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Sea Ice Algae and Bacteria
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Kelp Forest Interior
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Rocky Intertidal
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Kelp Forest Surface
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Rocky Intertidal
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Salt Marsh communities
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Seagrass communities
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Mangrove forests
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Coral Reefs Algal Symbiosis
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Coral Reefs Zooxanthellae
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Coral Reefs Algal Gardening
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Coral Reefs / Lagoons Algal symbiosis -
Zooxanthellae
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Coral Reefs Algal symbiosis - Zoochlorellae
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Coral Reefs Algal symbiosis - Zoochlorellae