Voyage of the Turtle

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1 # 48 Voyage of the Turtle Dr. Carl Safina April 27, 2007 Produced by and for Hot Science - Cool Talks by the Environmental Science Institute. We request that the use of these materials include an acknowledgement of the presenter and Hot Science - Cool Talks by the Environmental Science Institute at UT Austin. We hope you find these materials educational and enjoyable.

2 Fresh Inspiration for Ocean Conservation Voyage of the Turtle Dr. Carl Safina

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9 Archelon, largest turtle that ever lived

10 Bahrain sealing stamps 4,000 years before present

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16 1500 ft 3000 ft 3700 ft 3900 ft

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29 Travels of turtles, My travels

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32 In the years between hatchling and breeding, a lot can happen

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35 A world of people

36 A world of people some, well-meaning

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38 March 24, 2006, NY Times Climate Data Hint at Irreversible Rise in Seas By ANDREW C. REVKIN Within the next 100 years, the growing human influence on Earth's climate could lead to a long and irreversible rise in sea levels by eroding the planet's vast polar ice sheets, according to new observations and analysis by several teams of scientists. One team, using computer models of climate and ice, found that by about 2100, average temperatures could be four degrees higher than today and that over the coming centuries, the oceans could rise 13 to 20 feet conditions last seen 129,000 years ago, between the last two ice ages. The findings, being reported today in the journal Science, are consistent with other recent studies of melting and erosion at the poles. Many experts say there are still uncertainties about timing, extent and causes. But Jonathan T. Overpeck of the University of Arizona, a lead author of one of the studies, said the new findings made a strong case for the danger of failing to curb emissions of dioxide and other gases that trap heat in a greenhouselike effect. "If we don't like the idea of flooding out New Orleans, major portions of South Florida, and many other valued parts of the coastal U.S.," Dr. Overpeck said, "we will have to commit soon to a major effort to stop most emissions of carbon to the atmosphere."

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45 Drift Longlines

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47 U.S. Atlantic longline sets Observed Sets (N=3,826) Logbok Sets (N =115,330) U.S. Hawaii longline sets Observed Sets (N= 3610) Most sets occur outside of the U.S. federal waters (Drawn as red lines)

48 Circle Hooks (the two on right) J-Hooks North Atlantic Research: Turtle Mortality decreased by as much as 90%

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52 (after Christen, 1999) (after Messieh et al., 1991)

53 Trawls and and TEDs TEDs Trawls and TEDs

54 WHAT WENT Number of nests Florida Loggerheads Year RIGHT? Number of nests Central Florida Green Turtles Year 1. Endangered Species Act Ended killing Protected Nests Enabled TEDs Enabled Longline changes Enabled conservationists 2. WIDECAST Network

55 Population Into the Pacific Leatherbacks declined 95% since 1980s Costa Rica Year

56 Population Into the Pacific Leatherbacks declined 95% since 1980s Costa Rica Year Shillinger et al. Unpublished Courtesy of Stanford University

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58 Main nesting beaches in México Chacahua Mexiquillo Tierra Colorada Llano Grande Barra de la Cruz courtesy Raquel Briseño y Laura Sarti

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64 2003 Turtle Tracks Jamursba Medi, Papua & Monterey Bay, USA GMT Map created by Denise Parker 02/10/04

65 2003 Turtle Tracks Jamursba Medi, Papua to West Coast USA

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67 THEN NOW

68 nesters Recovering Sea Turtle Populations Kemp s Ridley Olive Ridley in Mexico Green Turtle in Eastern Pacific Leatherbacks in South Africa, Caribbean & Florida Loggerheads, Greens in Caribbean & Florida Greens in Hawaii Year St. Croix Leatherbacks: Exponential Increase

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77 The Voyage Begins

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79 Dr. Carl Safina Carl Safina grew up by the sea and learned from an early age to love the ocean and its creatures. His scientific study of seabirds and fish led to a doctorate of Ecology from Rutgers University and a life dedicatedto saving the oceans. Dr. Safina's books include Song for the Blue Ocean and Eye of the Albatross. His conservation work has been profiled in The New York Times, on Nightline and in the Bill Moyer's television special Earth on Edge. A recipient of the Lannan Literary Award, the John Burroughs Writers Medal and fellowships from the Pew and MacArthur foundations and the World Wildlife Fund, he is founding president of Blue Ocean Institute, which seeks to inspire a closer relationship with the

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