Assignment: Food Webs and Marine Ecosystems

Assignment: Food Webs and Marine Ecosystems

Reading requirements

{Intro to Ocean Sci.: Ch. 12 p. 287-288, 297-298 and Ch. 15 p. 410-416

https://www.youtube.com/watch?v=quwebVjAEJA

https://www.youtube.com/watch?v=B6M_XgiONoo

https://www.youtube.com/watch?time_continue=1&v=SHTDzLlUU6M

https://www.youtube.com/watch?v=TGR-QGdH3QU

https://www.youtube.com/watch?v=v6ubvEJ3KGM

https://www.youtube.com/watch?v=_I-GNkk8H88

https://vimeo.com/162786257 }

After reading the required reading answer these question :

1. Contrast a food chain and a foodweb. Describe how the biomass at the bottom compares to the biomass atthe top of each. Which model is a more accurate description of realecosystems?
2. Describe the causes and process of wind driven upwelling.
3. Explain why upwelling zones are generally major fishing areas.
4. Describe the food web or trophic interactions in polar ecosystems, include the major primary producers and predators.
5. Explain why it is beneficial forbaleen whales, some of the largest animals on Earth, to feed at lowertrophic levels rather than higher trophic levels.