1 / 5

POLAR SEAS

POLAR SEAS. Because the water is cold, oxygen is rich. The summer season, with increased light availability, has phytoplankton blooms. Upwelling is frequent due to high winds over low terrain. The dominant phytoplankton are diatoms and dominant zooplankton are krill. NOAA. NOAA.

kasia
Download Presentation

POLAR SEAS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. POLAR SEAS Because the water is cold, oxygen is rich. The summer season, with increased light availability, has phytoplankton blooms. Upwelling is frequent due to high winds over low terrain.

  2. The dominant phytoplankton are diatoms and dominant zooplankton are krill. NOAA NOAA Short food chains yield high productivity and high population density. However, the number of species is low as short food chains do not allow for diverse niches.

  3. The North and South poles are very different communities, but they do share the same unusual seasons. Both have winter months of nearly 24 hours of darkness followed by summers of nearly 24 hours of light. NASA Remember when it is winter in the North pole, it is summer in the South pole.

  4. Comparison of the Poles • NORTH POLE • SOUTH POLE ocean ecosystem with tall, jagged icebergs land ecosystem with a smooth, flat ice cap

  5. SOUTH POLE NORTH POLE Comparison of the Poles average temperatures: winter -30oF summer 32o F average temperatures: winter -78oF summer -20oF Siberian record - 92o F Vostok record -128o(1983) Pinnipeds (seals, sea lions and walrus) polar bears, no penguins Pinnipeds, penguins, no walrus, no bears

More Related