Transformation of the Biosphere: Vacuuming the World's Oceans
Larger and larger catches of fish may be good for commercial fishing operations, but they're not good for the world. Find out which regions and species are at the greatest risk.
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This three-page presentation, available online as a printable PDF, discusses the world’s overexploited fish and invertebrate populations.
- It begins with an overview that explains how technological advances have made fishing so intensive and efficient that populations of many species are at risk.
- It then has a two-page world map that shows the percentage of each region’s populations that are fully fished, overfished, or depleted.
- The map also highlights which fish and invertebrate populations have been overexploited and now are at risk.
Less than 1 period
Supplement a study of biodiversity or ecology with an activity drawn from this online presentation.
- Distribute a printed copy of the presentation to each student.
- Have students assemble the two map pages so that they can see a side-by-side comparison of the eastern and western hemispheres.
- Ask them to use the map to identify a species that is at risk in more than one region.
- Have students research this species, focusing on conservation efforts that have been proposed or put into place.