2 polar oceans - phytoplankton <- krill...

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16:58 2 polar oceans Arctic Ocean- north polar region o Smallest of the 5 main oceans o Layer or sea ice covers majority of ocean for part of the year Global warming  o Biodiversity In Ocean  Large Mammals Walruses and whales Small organisms Fish, phytoplankton, marine plants o Thrive more in summer months o Hard to photosynthesize in winter months In and under Sea Ice Not much known Algae and small organisms Southern Ocean (Antarctic Ocean)- south polar region o Waters separated without continent borders because of circulation pattern-  narrow band of water rotating clockwise around Antarctica o Biodiversity Eight whale species Six seal species Many fish species Antarctic krill 17 penguin species
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important to marine food web because they eat marine species
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Unformatted text preview: phytoplankton <- krill <- penguins General about Polar Oceans Seawater denser and colder Saltier because ice pulls out fresh water Adaptations o Colder water o Long periods on dark and long periods of light (high UV rays) o Presence of sea ice o Sensitive to slight changes in temp or salinity Habitat o Temp -.7 to 3 deg C o Salinity- 28 to 35 g/kg Polynyas o Open areas of water around ice o Few km2 to 50,000 km2 o Trigger early and intense phytoplankton reproduction Prim Prod o Phytoplankton blooms in summer- some of Earths highest pp o Sea ice formation and melt play important role 16:58 16:58...
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This note was uploaded on 09/26/2010 for the course MNS 320 taught by Professor Staff during the Spring '08 term at University of Texas at Austin.

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2 polar oceans - phytoplankton <- krill...

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