by Laura Tiu | Sep 23, 2016
Rocky Bayou Aquatic Preserve – Choctawhatchee Bay, Niceville, Florida – Photo by Laura Tiu
September 17-24, 2016 was the nation’s 28th time to celebrate America’s coasts and estuaries during National Estuaries Week. This week helps us to remember to appreciate the challenges these coastal ecosystems face, along with their beauty and utility.
Estuaries, semi-enclosed bodies of water with both fresh and saltwater, dot the Gulf Coast of the United States from Brownsville Texas to Key West, Florida. These estuaries are important as they serve as drainage basins for many of the large river systems, and play a significant role in the nation’s seafood industry.
Florida’s six major Panhandle estuaries, which includes Perdido Bay, Pensacola Bay (including Escambia Bay), Choctawhatchee Bay, St. Andrew Bay, St. Joseph Bay and Apalachicola Bay, are unique ecosystems teeming with life and diversity. Critical habitat includes important seagrass beds that support both the larval and adult stages of fish and invertebrates. In Choctawhatchee Bay, there is also critical foraging habitat for the federally protected Gulf sturgeon (Acipenser oxyrinchus desotoi) and stream habitat for the endangered Okaloosa darter.
Choctawhatchee Bay is in Okaloosa and Walton counties in the Florida Panhandle. It is approximately 30 miles long and from three and a half to six miles wide, with a total area of 129 square miles. It is relatively shallow varying from 10 to 40 feet deep. Large portions of the western half of Choctawhatchee Bay are militarily restricted (Eglin Airforce Base). The Bay is fed by the Choctawhatchee River and numerous small creeks that feed into several bayous. The only opening to the Gulf of Mexico is the East Pass, which ironically is at the Western end of the Bay in Destin, Florida. This is where the saltwater and freshwater mix.
Continued industrial and residential development in the watershed regions that drain into many of these estuaries has impacted them in a number of ways. Pollution comes from storm water runoff, lawns, industry and farms. The shorelines are impacted by development, which causes sedimentation and in turn loss of vegetation. This reduces water clarity and habitat for wildlife.
Many organizations work to protect this estuary and reach out to others through education, restoration, and recreation events. Choctawhatchee Basin Alliance (CBA) is one such organization committed to ensuring sustainable utilization of the Choctawhatchee River and Bay. They, working with their partners, provide leadership for the stewardship of the Bay. Alison McDowell, director of the CBA, notes that 75-85% of commercially and recreationally important species that are caught in the Gulf spend part of their lifecycle in the Bay. McDowell says a key factor in the Bay’s health is monitoring the water quality and reducing erosion, and the Oyster Reef Restoration program started in 2006 does just that.
There are often opportunities for the general public to join in some of the conservation efforts taking place in the Bay. For more information, like the Okaloosa or Walton County Extension Facebook page.
Kayaking Choctawhatchee Bay – Photo by Laura Tiu
by Laura Tiu | Jul 22, 2016
Dr. Monica Wilson, University of Florida Sea Grant, shares an update on the research that has occurred in the past five years since the Deepwater Horizon oil spill. Presented in the Rodeo Room at the Destin History and Fishing Museum. Photo credit: Laura Tiu
The Deepwater Horizon (DWH) oil spill occurred about 50 miles offshore of Louisiana in April 2010. Approximately 172 million gallons of oil entered the Gulf of Mexico. Five years after the incident, locals and tourists still have questions. The Okaloosa County UF/IFAS Extension Office invited a Gulf of Mexico Oil Spill Scientist, Dr. Monica Wilson, to help answer the five most common questions about the oil spill and to increase the use of oil spill science by people whose livelihoods depend on a healthy Gulf.
The event was held at the Destin History and Fishing Museum on Monday evening, July 11, 2016. Executive Director, Kathy Marler Blue partnered with the University of Florida to host the event. “The Destin History and Fishing Museum has a vision that includes expanding its programs to include a lecture series,” said Blue. Over 20 interested individuals attended the lecture and the question and answer session was lively. This was the first in what hopes to be an ongoing lecture series, bringing more scientific information to our county.
Dr. Wilson is based in St. Petersburg, Florida with the Florida Sea Grant College Program. Monica uses her physical oceanography background to model circulation and flushing of coastal systems in the region and the impacts of tropical storms on these systems. She focuses on the distribution, dispersion and dilution of petroleum under the action of physical ocean processes and storms. For this lecture, she covered topics such as: the safety of eating Gulf seafood, impacts to wildlife, what cleanup techniques were used, how they were implemented, where the oil went, where is it now, and do dispersants make it unsafe to swim in the water?
The oil spill science outreach program also allows Sea Grant specialists to find out what types of information target audiences want and develop tailor-made products for those audiences. The outreach specialists produce a variety of materials, such as fact sheets and bulletins, focused on meeting stakeholder information needs. The specialists also gather input from target audiences through workshops and work with researchers to share oil spill research results at science seminars that are facilitated by the specialists.
The Destin History and Fishing Museum is a nonprofit organization whose members are dedicated to preserving, documenting, and sharing the complete history of Destin. Please subscribe to their Facebook page for information on upcoming events. The UF IFAS Extension Okaloosa County office also hosts a Facebook page with announcement of upcoming programs.
For additional information and publications related to the oil spill please visit: https://gulfseagrant.wordpress.com/oilspilloutreach/
by Laura Tiu | May 8, 2016
Florida has the highest number of sea turtles of any state in the continental US. Three species are common here including loggerhead, green and leatherback turtles. The Federal Endangered Species Act lists all of sea turtles in Florida as either threatened or endangered.
Sea turtle nesting season for the area began May 1, 2016. Adult females only nest every 2-3 years. At 20-35 years old, adult loggerhead and green female turtles return to the beach of their birth to nest. At this age, they are about 3 feet long and 250-300 pounds. The turtles will lay their eggs from May – September, with 50-150 baby turtles hatching after 45-60 days, usually at night. One female may nest several times in one season.
If you happen to see a sea turtle nesting, or nest hatching, stay very quiet, keep your distance, and turn any lights off (no flash photography). You should never try to touch a wild sea turtle. Also, do not touch or move any hatchlings. The small turtles need to crawl on the beach in order to imprint their birth beach on their memory.
During nesting season, it is important to keep the beaches Clean, Dark and Flat. Clean, by removing everything you brought to the beach including trash, food, chairs and toys; dark, by keeping lights off, using sea turtle friendly lighting and red LED flashlights if necessary; and flat, filling up all holes and knocking down sand castles before leaving the beach. If you see anyone harassing a sea turtle or a sea turtle in distress for any reason, do not hesitate to call the Florida Fish and Wildlife Commission hotline at 1-888-404-3922.
There has been encouraging sea turtle news in Florida as a result of the conservation actions being undertaken. There is an increasing number of green turtle nests and a decreasing number of dead turtles found on beaches.
If you want to see a sea turtle and learn more about these fascinating creatures, visit the Navarre Beach Sea Turtle Conservation Center, Navarre, FL, the Gulfarium Marine Adventure Park on Okaloosa Island, Fort Walton Beach, FL, or Gulf World Marine Park in Panama City, FL.
| County |
Beach nesting area (miles) |
Number of loggerhead sea turtle nests |
Number of green sea turtle nests |
Number of leatherback sea turtle nests |
| Franklin |
56 |
608 |
14 |
0 |
| Gulf |
29 |
451 |
14 |
0 |
| Bay |
44 |
170 |
12 |
5 |
| Walton |
30 |
94 |
4 |
3 |
| Okaloosa |
24 |
73 |
6 |
0 |
| Santa Rosa |
7 |
17 |
4 |
0 |
| Escambia |
39 |
86 |
4 |
1 |
Table 1: Data from the 2015 Florida Statewide Nesting Beach Survey available at: www.myfwc.com.
Young loggerhead sea turtle heading for the Gulf of Mexico. Photo: Molly O’Connor
The Foundation for the Gator Nation, An Equal Opportunity Institution.
by Laura Tiu | Apr 22, 2016
The Deepwater Horizon (DWH) oil spill occurred about 50 miles offshore of Louisiana in April 2010. Approximately 172 million gallons of oil entered the Gulf of Mexico. Five years after the incident, locals and tourists still have questions. This article addresses the five most common questions.
QUESTION #1: Is Gulf seafood safe to eat?
Ongoing monitoring has shown that Gulf seafood harvested from waters that are open to fishing is safe to eat. Over 22,000 seafood samples have been tested and not a single sample came back with levels above the level of concern. Testing continues today.
QUESTION #2: What are the impacts to wildlife?
This question is difficult to answer as the Gulf of Mexico is a complex ecosystem with many different species — from bacteria, fish, oysters, to whales, turtles, and birds. While oil affected individuals of some fish in the lab, scientists have not found that the spill impacted whole fish populations or communities in the wild. Some fish species populations declined, but eventually rebounded. The oil spill did affect at least one non-fish population, resulting in a mass die-off of bottlenose dolphins. Scientists continue to study fish populations to determine the long term impact of the spill.
Question #3: What cleanup techniques were used, and how were they implemented?
Several different methods were used to remove the oil. Offshore, oil was removed using skimmers, devices used for removing oil from the sea’s surface before it reaches the coastline. Controlled burns were also used, where surface oil was removed by surrounding it with fireproof booms and burning it. Chemical dispersants were used to break up the oil at the surface and below the surface. Shoreline cleanup on beaches involved sifting sand and removing tarballs and mats by hand.
QUESTION #4: Where did the oil go and where is it now?
The oil spill covered 29,000 square miles, approximately 4.7% of the Gulf of Mexico’s surface. During and after the spill, oil mixed with Gulf of Mexico waters and made its way into some coastal and deep-sea sediments. Oil moved with the ocean currents along the coast of Texas, Louisiana, Mississippi, Alabama, and Florida. Recent studies show that about 3-5% of the unaccounted oil has made its way onto the seafloor.
QUESTION #5: Do dispersants make it unsafe to swim in the water?
The dispersant used on the spill was a product called Corexit, with doctyl sodium sulfosuccinate (DOSS) as a primary ingredient. Corexit is a concern as exposure to high levels can cause respiratory problems and skin irritation. To evaluate the risk, scientists collected water from more than 26 sites. The highest level of DOSS detected was 425 times lower than the levels of DOSS known to cause harm to humans.
For additional information and publications related to the oil spill please visit: https://gulfseagrant.wordpress.com/oilspilloutreach/
Adapted From:
Maung-Douglass, E., Wilson, M., Graham, L., Hale, C., Sempier, S., and Swann, L. (2015). Oil Spill Science: Top 5 Frequently Asked Questions about the Deepwater Horizon oil spill. GOMSG-G-15-002.
An estimate of what happened to approximately 200 million gallons oil from the DWH oil spill. Data from Lehr, 2014. (Florida Sea Grant/Anna Hinkeldey)
The Foundation for the Gator Nation, An Equal Opportunity Institution.
by Laura Tiu | Mar 12, 2016
It is that time of year again. Spring Break brings locals and visitors back to the beach for fun in the sun. It is important to remind folks that part of having fun is playing it safe. At the beach, this means knowing and following some pretty basic safety guidelines.
Not all beaches have lifeguards present, you have to be responsible for your own safety. When visiting the beach, it is important to consider the tide and surf conditions. To minimize the risks of drowning or serious injury, a uniform warning flag program was developed for use by Florida’s beachfront communities. Florida’s beach warning flag program uses flags in four colors accompanied by interpretive signs along the beach to explain the meaning of each color in both English and Spanish. Please follow the guidelines and flags posted.
You also need to check for the presence of rip currents. Rip currents are powerful currents of water moving away from the shore. They can pull even a strong swimmer out to sea. It is best to not enter the water where a rip current is present. However, if you find yourself caught in one, try to relax and don’t fight the current, swim out of the current parallel to the shore and swim to shore when you no longer feel the pull of the current.
Protect your skin. Just one blistering sunburn in childhood or adolescence more than doubles a person’s chance for developing melanoma later in life. Racking up more than five sunburns at any age also doubles the risk for melanoma. Keep sunburn at bay by properly applying sunscreen of SPF 15 or higher. Try to spend some time in the shade, wear a hat and sunglasses to protect your eyes. Remember to hydrate by drinking plenty of water too.
It is good to know a little bit about and appreciate the ocean life you might meet on the beach. Shark attacks aren’t common, especially in shallow shore areas, but always be on the lookout. Shells on mussels, clams and oysters can be very sharp so be careful walking near them. Some species of jellyfish have tentacles that contain venom and can sting you. Avoid them if you can. Learn about the animals you will find at the beach and you will be able to co-exist with little risk.
Many ocean creatures need our protection. Sea turtles and many shorebirds are protected and there are things you can do to help them. For sea turtles, keep the beach clean (remove all trash and furniture), dark (turn off lights on beach and don’t use flashlights) and flat (fill in any holes you dig so that turtles don’t become trapped). In fact, it’s recommended that you take only pictures and leave only footprints. Stay away from nesting shorebird habitat. Many beaches do not allow you to bring your pets to the beach for health and safety reasons and to protect venerable wildlife. Be sure to know the rules before you bring Fido to the beach.
Finally, please help keep the beach tidy. When your visit is over, take back everything you brought. Food scraps attract unwanted animals, fishing line injures and kills birds and other wildlife and plastic is harmful to both the environment and the animals that sometimes mistake it for food. Abandoned beach furniture and toys can obstruct sea turtle nesting and hatching. The best policy is to leave the beach cleaner than you found it.
Have a good time at the beach. Take a little time to learn and follow the safety rules that are there for your protection. Practice good citizenship by caring for and conserving the beach and ocean ecosystems in order to keep them beautiful in the present and for future generations.
Many counties in the panhandle have lighting and barrier ordinances to protect wildlife and workers.
Photo: Rick O’Connor
Follow these beach safety tips for helping your family enjoy the beach while protecting coastal wildlife.
