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The Biological Pump The biological pump is the process by which CO2 fixed in photosynthesis is transferred to the ocean interior resulting in a temporary.

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Presentation on theme: "The Biological Pump The biological pump is the process by which CO2 fixed in photosynthesis is transferred to the ocean interior resulting in a temporary."— Presentation transcript:

1 The Biological Pump The biological pump is the process by which CO2 fixed in photosynthesis is transferred to the ocean interior resulting in a temporary or permanent sequestration (storage) of carbon. The biological pump is the process by which CO2 fixed in photosynthesis is transferred to the ocean interior resulting in a temporary or permanent sequestration (storage) of carbon. This biogeochemical process involving phytoplankton, the animals that consume them, and the bacteria that assimilate their waste plays a central role in the global carbon cycle. This biogeochemical process involving phytoplankton, the animals that consume them, and the bacteria that assimilate their waste plays a central role in the global carbon cycle. Web resource: http://www.msrc.sunysb.edu/octet/biological_pump.html Web resource: http://www.msrc.sunysb.edu/octet/biological_pump.html http://www.msrc.sunysb.edu/octet/biological_pump.html

2 This slideshow will take you through the steps of the biological pump. This slideshow will take you through the steps of the biological pump. The Biological Pump

3 Carbon dioxide is removed from the atmosphere by producers that use CO 2, sunlight and nutrients to make food through the process of photosynthesis. Carbon dioxide is removed from the atmosphere by producers that use CO 2, sunlight and nutrients to make food through the process of photosynthesis.Photosynthesis

4 CO 2 Phytoplankton Photosynthesis

5 Some CO 2 is then released back into the water through respiration as the phytoplankton break down their food to release energy. Some CO 2 is then released back into the water through respiration as the phytoplankton break down their food to release energy.Respiration

6 CO 2 Phytoplankton RespirationPhotosynthesis

7 Some of the carbon is passed on to primary consumers: zooplankton and other filter feeders that depend on phytoplankton for their energy. Some of the carbon is passed on to primary consumers: zooplankton and other filter feeders that depend on phytoplankton for their energy.Consumption

8 CO 2 Phytoplankton Zooplankton Consumption RespirationPhotosynthesis

9 Bacteria play a vital role in the biological pump by decomposing organic particles such as waste products and dead organisms that sink to the deep sea (Aerobic decomposition releases CO 2 ). In the upper oceans, bacteria can actually weaken the biological pump by reducing particulate flow to the deep. Bacteria play a vital role in the biological pump by decomposing organic particles such as waste products and dead organisms that sink to the deep sea (Aerobic decomposition releases CO 2 ). In the upper oceans, bacteria can actually weaken the biological pump by reducing particulate flow to the deep.Decomposition

10 CO 2 Phytoplankton Zooplankton Bacteria ConsumptionDecomposition RespirationPhotosynthesis

11 Consumption continues to transport carbon through higher trophic levels. Consumption continues to transport carbon through higher trophic levels. Higher Trophic Levels

12 CO 2 Phytoplankton Zooplankton Higher Level Consumers Bacteria Consumption Decomposition Respiration Photosynthesis

13 The process continues… The process continues… Higher Trophic Levels

14 CO 2 Phytoplankton Zooplankton Higher Level Consumers Bacteria Consumption Decomposition Respiration Photosynthesis

15 As bacteria break down organic matter, the CO 2 that is not remineralized is stored in the deep-ocean sediments. As bacteria break down organic matter, the CO 2 that is not remineralized is stored in the deep-ocean sediments.Remineralization

16 CO 2 Phytoplankton Zooplankton Higher Level Consumers Bacteria CO 2 Consumption Decomposition Remineralization Respiration Photosynthesis

17 CO 2 Phytoplankton Zooplankton Higher Level Consumers Bacteria CO 2 Consumption Decomposition Remineralization Respiration Photosynthesis


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