Download Reviewing Halibut Fishing, Ocean Acidification, and Marine Conservation Lectures and more Study notes Marine Science and Biology in PDF only on Docsity! 1 1 Dean Adams Fishing (Lecture 27) Review • What type of gear is used for fishing halibut & sablefish? How does it work? • How were orcas a problem for the halibut/sablefish fishery? • Define bycatch. How was bird bycatch reduced in AK? What is a general solution for avoiding bycatch? • Dramatic changes were made in the halibut/sablefish fisheries in the 1990s. How were these fisheries managed before and after? What were effects of the change? • What is the marine stewardship council? 2 In the 1990s, Individual Fishing Quotas (IFQ) were introduced to the halibut fishery. How did this work? 1. That statement is not true. IFQs were not used. 2. Anyone could fish as many fish as possible in a short time period 3. There was a lottery for fishing rights. Everyone who won got an equal share 4. Fishing rights were distributed based on previous success and time in the fishery. Shares were not equal 3 Ocean Acidification Richard Feely Lecture 28 Review • What is ocean acidification? • What is the cause of ocean acidification? • What are the potential effects of ocean acidification? • Is ocean acidification happening now? Can we measure it? • Describe a local food web which may be severely impacted by ocean acidification 4 What did you learn about ocean acidification on Wednesday? 1. I understand the main concepts 2. I understand the concepts and some specifics 3. I was completely confused 5 What is the cause of ocean acidification? 1. Increased atmospheric CO2 leads to increased oceanic CO2 which leads to decreased ocean pH 2. Increased atmospheric CO2 leads to increased oceanic CO2 which leads to increased ocean pH Note: lower pH = more acidic 6 • Final Exam: Wed Dec 10, 8:30 – ~70% new, ~30% old – 4-6 questions per new lecture – 10-15 questions from the first 2/3 of the course – Concepts tested likely to be tested again – Short optional written component—will be used to assess participation • Regrade • Will post scores & answers Wednesday • Need re-grades by Friday • Review Session – Monday Dec 8 6:30pm – Mary Gates Hall 2 7 Marine Conservation Marine Biology Friday December 5th, 2008 Deskpicture.com 8 “When one tugs at a single thing in nature, he finds it attached to the rest of the world” ~John Muir Planet Earth is Planet Ocean Everything we do matters 9 For scientists and policy makers • Biology – Life history – Food webs – Migration – Habitat – Genetics • Oceanography – Currents and planktonic dispersal – Ocean temperature – Ocean pH • Fisheries – Management options: IFQ, gear/time restrictions, location restrictions, etc. – Marine protected areas – History of fishing/ shifting baselines • Human element – Economics (long/short) – Land development – Runoff/ pollution 10 Be Political • Vote • Write a letter to a politician – Note: you can do this now to ask for support for the FORAM Act. – Senators: Maria Cantwell and Patty Murray – http://directory.usayfoundation.org/WA.html 11 Volunteer • People for Puget Sound www.pugetsound.org • Puget Soundkeeper Alliance www.pugetsoundkeeper.org • Surfrider www.surfrider.org • Puget Sound Restoration Fund www.restorationfund.org • Seattle Aquarium www.seattleaquarium.org 12 Shop differently • Sustainable fisheries and aquaculture – Marine Stewardship council: www.msc.org – Monterey Bay Aquarium seafood watch guide www.montereybayaquarium.org/cr/seafoodwatch.aspx • Local • Organic • Lean vegetarian • Close the loop: recycle and buy recycled
