Factors Controlling Plankton Ecology
David Thomas, Marine Research Center, Finnish Environment Institute (June 20, 2011)
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Slides
| 0:05 | Scales/marine ecology/controls/sampling |
|---|---|
| 1:54 | Global marine primary production |
| 2:42 | Sea ice biology/ecology is an ancient and nobel science |
| 4:27 | ...Antarctic sea ice |
| 4:39 | Ice is important for obvious... |
| 4:51 | ...and it is not just a few |
| 5:06 | ...and they are there because there is lots to eat |
| 5:49 | Supply and Demand |
| 8:31 | Space...rather an obvious one |
| 10:07 | But for the algae, bacteria and their grazers |
| 12:39 | Plants in the oceans |
| 13:33 | Many phytoplankton 10s, 100s and even 1000s |
| 14:37 | But not all... |
| 15:34 | The Bioeochemical Cycle |
| 17:30 | Photosynthesis |
| 18:15 | Photosynthesis(cont.) |
| 19:53 | Photosynthesis(cont.) |
| 21:27 | Light reaction- Quality and Quantity |
| 25:25 | Light reaction- Quality and Quantity |
| 27:38 | Measurement from Oxygen Changes |
| 29:03 | additional requirement for nitroget and phosphorous |
| 30:29 | Nitrogen a key limitation |
| 31:52 | Cycles in the ocean are complex |
| 32:24 | But not just nitrogen... |
| 32:39 | Even trace metals important... |
| 33:23 | Seasonal cycle |
| 34:23 | P vs E key to it all |
| 34:35 | What initiates the spring bloom |
| 34:38 | What initiates a phyloplankton bloom |
| 36:40 | Caution... |
| 38:18 | P vs E key to it all |
| 38:26 | Critical Depth |
| 40:41 | Critical Depth Theory |
| 41:37 | Critical depth (cont.) |
| 43:19 | Sub-surface Chlorophyll layers |
| 44:31 | Not just one algae but a succession |
| 45:35 | ...and so what is this to do with sea ice |
| 46:26 | Frozen seawater is a labyrinth of brine filled channels and pores |
| 46:42 | And within the labyrinth |
| 47:32 | But for the algae, bacteria and their grazers the scales have changed |
| 49:38 | how relevant is it for us... |
Abstract
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