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Marine Biodiversity Benefits and Challenges Discussed in "Empty Oceans, Empty Nets

Explore marine biodiversity benefits and challenges in "Empty Oceans, Empty Nets" by PBS. Join today's reading quiz and discussion on marine ecology findings by Worm et al.

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Marine Biodiversity Benefits and Challenges Discussed in "Empty Oceans, Empty Nets

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  1. Today’s schedule • Reading quiz • Reading discussion • “Empty Oceans, Empty Nets” • One-on-one discussion of papers

  2. Reading Quiz • Name one benefit of marine biodiversity according to Worm et al. (1) • What is shown in (A )? (2) • What is shown in (B )? (1) • What is one problem associated with using catch data to infer population size? (1)

  3. 2006: Worm et al. = “marine ecologists”

  4. “fisheries scientists”

  5. Issue 1: extrapolation from coastal/estuarine systems to entire ocean

  6. Issue #2: LME’s as “replicates” 46 degrees latitude 10 degrees latitude

  7. Issue 3: Definition of collapse • Less than 10% of historic high Anchoveta fishery: largest in the world

  8. Issue #4: The hype. A general assumption that fish stocks are everywhere in terminal decline has lead to a “community of belief that fisheries management has failed, and that we need to abandon the old approaches and use marine protected areas and ecosystem based management”

  9. Empty Oceans, Empty Nets • Produced by PBS • Funded by same foundation as Worm et al. study • Is coverage balanced? What is overall message?

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