Over 15 years of ocean science and conservation online
If you ever find yourself pulling in a hand-deployed longline in murky water and the line gets heavy all of a sudden, the best thing to do is not to get on your knees and pull as hard as you can while leaning slightly overboard. Even though you might think the line is merely caught … Read More “Thoughts on an “oopsie”” »
A University of Miami research team that included my friend Austin (seen here posing with Charlie) recently had a CNN team tag along on a shark tagging cruise. There is also an article on CNN.com, which can be found here ~WhySharksMatter
Shark expert Sonja Fordham, President of the new conservation organization Shark Advocates International, will be speaking at a “Shark Salon” in San Francisco on Tuesday. At the Salon, Sonja will answer people’s questions about sharks and tell entertaining stories from her life as a conservationist and scientist. She is asking for a $25 donation to … Read More “Shark Salon this Tuesday in San Francisco” »
Charlie helps WhySharksMatter measure two Atlantic sharpnose sharks by using himself for scale. Atlantic sharpnose sharks are by far the most common species that the SCDNR shark survey finds, and these males are almost full grown. SSV Robert C. Seamans
The extent of migration among populations drives population structure. With enough migration, populations become homogeneous and behave as a single larger population. As migration rates decrease, populations drift apart and become differentiated. By measuring the amount of differentiation, we can determine the extent of migration between them. But what happens when there are unsampled populations also exchanging migrants?
