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Alexandra Ender Sarah Privoznik Estrella Malca 13 February 2015.

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Presentation on theme: "Alexandra Ender Sarah Privoznik Estrella Malca 13 February 2015."— Presentation transcript:

1 Alexandra Ender Sarah Privoznik Estrella Malca 13 February 2015

2 Atlantic Bluefin Tuna Ecology Native range Spawning migration Gulf of Mexico Ideal conditions Temperature: 24-27°C (297-300K) Low chlorophyll (<0.16mg/m 3 ) Shelf break & edge of ocean features

3 Objective & Data To predict favorable habitat regions for bluefin tuna spawning in the Gulf of Mexico VIIRS satellite imagery Sea surface temperature Bands 15 (10.7µm) and 16 (12µm) Band math equation: M15 + (M15 – M16) Ocean color Bands M5 (0.67µm), M4 (0.55µm), and M3 (0.48µm) True color imagery RGB Composite

4 Larval sampling

5 Maximum observed temperature = 296.48K (23.3°C)

6

7 Conclusions Conditions as of 28 January 2015 are not ideal for spawning Temperature not warm enough Chlorophyll levels would not inhibit spawning Adult fish are probably starting to arrive to region Spawning likely to begin in 2-3 months

8 Habitat Model Muhling and Nero, in prep Mediterranean Bluefin spawning Grounds Gulf of Mexico Bluefin spawning Grounds

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