Dry Tortugas Shark Expedition

image003love sharks and am deeply proud to have just completed my first year as an intern in Dr. Hammerschlag’s Shark Research & Conservation (SRC) Lab here at the University of Miami’s Rosenstiel School of Marine and Atmospheric Science.

As summer begins and my Freshman year at RSMAS comes to an end, I am excited to share that I am about to cast off with some of my SRC lab partners and people from the Field School for a shark research expedition in the magnificent waters of the Dry Tortugas in the Gulf of Mexico. I’ll be traveling and living aboard the 55’ R/V Garvin’s research vessel with 13 other crew members and we will be performing all sorts of cool research on shark populations in the Gulf.

68 miles West of Key West, the Dry Tortugas are an untouched natural environment filled with incredible marine life and beauty. With the exception of Fort Jefferson, which maintains a small staff of National Park Service personnel, the islands are uninhabited and were named by Ponce de Leon in the early 1500’s after sailing by them and believing they were shaped like turtles (tortugas in his native Spanish language).

I visited the Dry Tortugas about three years ago on a family fishing and diving trip and fell in love with them. The waters are pristine, the beaches soft and bright white and the sea and marine bird life is abundant everywhere you look or swim. It’s simply an amazing place and I am very exited about conducting research there and enjoying another adventure in a place I love.

f0ba93b6-cee4-499d-93a2-b720f7124087_orig

While I am offshore on the expedition, please know that I will not have any cell, email or internet service but I hope to return will all sorts of stories and pictures to share with you. Enjoy the end of your school year and the start of summer and you can be sure I will be enjoying my time with the sharks and other awesome marine life in the Gulf of Mexico.

1

King James

I’m Going Dark So Others Can Be The Light

LeBron James, Cleveland Cavaliers

Cleveland-Cavaliers-Lebron-James-4K-Wallpaper-1440x900

When the NBA Playoffs began recently, NBA legend LeBron James announced to his nearly 40 million Instagram followers that he’d cease posting on social media as part of his annual Zero Dark Thirty-23 ritual but in doing so he explained “I’m going dark so others can be the light’.

Over the last couple of weeks King James has posted a number of amazing and inspirational Instagram Stories on his site from young people all over America.” I am proud and truly humbled to share that my own work with The Sink or Swim Project and @miamisearise was today’s featured story on @kingjames. You can watch by clicking here: https://www.instagram.com/p/BisHHABBVER/?taken-by=miamisearise.

LeBron’s greatness and dominance at his profession speaks for itself. No matter how long I live I might never see a better team, or better hoops, than during his time here with the Miami Heat. The Big Three team of LeBron, Dwayne Wade and Chris Bosh were magical but his work on the court only scratches the surface of what I am sure he will do in his time here on earth. LeBron’s destiny, like Muhamad Ali before him, is to have an impact far beyond sports and I am grateful that he would use my message to educate his followers about our global climate change crisis.

Appropriately, LeBron’s last social medial post before the playoffs tipped off was a quote from Dr. Martin Luther King Jr.:

 Darkness Cannot Drive Out Darkness; Only Light Can Do That

Dr. Martin Luther King Jr.

Thanks LeBron for using your voice and role in our society to bring awareness to important social issues as climate change and sea level rise. And thanks for featuring young people and inspiring so many others to use their voice to make a positive difference. Great luck during the playoffs! I will be rooting for the Cavs to make it a seven game Championship series so that we can enjoy more Insta Stories on social media, along with some sick basketball from the greatest of all time! #AlwaysBelieve

And last, but not least, happy Mother’s Day to moms everywhere starting with the best mom in the world, my own mom Juli. III mom and thanks for all you do for me and our entire family.  

The Effect of Hurricane Hermine on Black Sea Bass

The following article first appeared on the Research Blog for Dr. Neil Hammerschlag’s Shark Research and Conservation (SRC) Lab website at the University of Miami’s Rosenstiel School of Marine and Atmospheric Science. To learn more about SRC, visit here: http://sharkresearch.rsmas.miami.edu/, or to learn more about the University’s marine science school, please click here: http://rsmas.miami.edu/.

 By Delaney Reynolds, SRC intern

Best Track Positions for Hurricane Hermine

Figure 1: Best Track Positions for Hurricane Hermine. This map is a composite of the best predicted tracks of Hurricane Hermine between August 28th and September 3rd, 2016. Offshore of western Florida, it transformed from a tropical storm to a hurricane, making landfall as a category one hurricane, and then transitioning back into a tropical storm as it made its way across the state into the eastern waters off Maryland. (Source: Berg 2017).

In September of 2016, Hurricane Hermine struck Florida as a category one hurricane and then migrated through Georgia, South Carolina, North Carolina, and then to offshore Maryland. According to the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI), Hermine’s damage “totaled around $550 million, with a 90% confidence interval of +/- $150 million” and demolished 1,600 homes and businesses (Berg 2017). But how did it affect offshore fish populations? Researchers from the University of Maryland designed an experiment to find out.

Four months before Hermine hit Florida, 45 black sea bass were acoustically tagged and acoustic receivers were moored in the shelf waters of three different sites off Maryland; a northern, middle, and southern site. Rash winds of Hurricane Hermine caused destratification, “a process in which the air or water is mixed in order to eliminate stratified layers of temperature, plant, or animal life,” in the water column of the Mid-Atlantic Bight.  Due to this disarrangement, temperatures of northern and middle experimental sites rose 10 degrees Celsius in just ten hours creating an unsuitable environment for living organisms and, thus, either migration or death of the black sea bass was expected.

Black Sea Bass Population Size, Summer 2016

Figure 2: Black Sea Bass Population Size, Summer 2016. This graph exhibits the decay in population size of black sea bass between the three experimental sites. The two vertical, black, hash-marked lines indicate September 2nd – 6th. All three experimental sites showed a decline in black sea bass populations and by January of 2017, all three populations had diminished completely. (Source: Secor et al. 2017).

Researchers discovered that 40% of the sea bass populations had evacuated the experimental sites in search of a more suitable habitat and any that stayed behind exhibited decreased activity levels showing that there were large behavioral changes due to the increased temperatures. Evacuation was found to be highest in the northern and southern sites and lower in the middle site and in most cases, migration was permanent. Although some recovery was indicated in the two weeks following Hermine, water column stratification and black sea bass population sizes did not return to normal (Secor et al. 2017).

Although hurricanes are just one of the factors contributing to the emigration of fish species, as our planet continues to warm, hurricanes are predicted to become more intense and more frequent potentially leading to even larger emigration phenomena which would ostensibly take a large toll on the fishing industry. According to the Fisheries Economics of the U.S. 2011 report, recreational fishing in the South Atlantic generates 52,000 jobs and adds $3 billion to the United States’ GDP (Back in Black). Due to their importance to our economy and the threats that they face, it will be imperative to monitor black sea bass and fisheries to ensure that measures are being taken to stabilize the economy when their performances decline.

Works cited

Berg, Robbie. “Hurricane Hermine.” National Hurricane Center Tropical Cyclone Report, 30 Jan. 2017.

Secor, D. H., Zhang, F., O’Brien, M. H., & Li, M. (2018). Ocean destratification and fish evacuation caused by a Mid-Atlantic tropical storm. ICES Journal of Marine Science.

USA Department of Commerce, 27 Sept. 2013. “Back in Black: Black Sea Bass Stock Is Rebuilt.” Accessed from: www.commerce.gov/news/blog/2013/09/back-black-black-sea-bass-stock-rebuilt.

1 2 3 4 5 30