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Overfishing of Southern Bluefin Tuna

Procedure

Time: Approximately 2 hours

Materials: Computer with internet access, Student Directions, Student Worksheet, graph paper or computer graphing program.

Prerequisites: Student must have previous knowledge of how to construct a line graph.

Implementation: This RWLO can be given as a homework assignment, implemented during class time, or as a combination of the two.

Steps:

  1. Using a computer, students will explore the following websites to learn about the ecology and fishing practices of the southern bluefin tuna:

  1. The students will then answer questions pertaining to the life history, ecology and fishing practices of the southern bluefin tuna on part A of the student worksheet (html version or pdf version).

  2. Students will then download the Annual catch data by flag or gear from 1952 to 2004 inclusive (excel format) from the CCBST website.

  3. Students will then prepare a line graph of the total number of southern bluefin tuna caught each year from 1952 - 2004 using the Global Catch By Country data.

  4. Students will answer questions pertaining to the annual catch data and graph on part B of the student worksheet (html version or pdf version).

  5. Provide time for students to discuss their findings and analyses.