Environmental Oceanography: Topics and Analysis
For Students

Issues Questions

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1:  In a more recent article,3 Myers and Worms state that “it has long been assumed that these species are largely extinction-proof.” Why do you think that many have assumed that large oceanic fi shes like tunas and sharks are extinction proof?

2:  Review the biology and life history characteristics of the bluefi n tuna. Identify features that would tend to protect the species from being overfi shed. Which might tend to hinder recovery from overfi shing? In what ways?

3:  On the axes on the next page, or on our website (http://www .jbpub.com/abel/), plot the Danish, Norwegian, and Swedish landings of bluefi n tuna from 1927–1950.

4:  Interpret your graph. (What happened to catch rate in France and Germany from 1939–45 (i.e., the war years)?

5:  Suggest and evaluate ways to increase and stabilize stocks of Atlantic bluefi n tuna in Northern Europe.

6:  Explain how the Stanford University biologist’s fi ndings may change the way bluefi n tuna are managed.

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