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Live From Oyster South Pt. 2

Live From Oyster South Pt. 2

Day 2 of the Oyster South Symposium was the final day of presentations and the trade show, but it is also the day of the Shuck and Tell closing ceremonies. Another grey sky day greeted us, but the symposium was still full of oyster enthusiasts and farmers. Day 2’s talks focused more on marketing and the future of oyster farming, including discussion of a new program for Federal Crop Insurance and a panel of chefs discussing “What Chefs Want” when it comes to an oyster. The oyster disco ball also made an appearance, and I was finally able to snap a photo of that beauty!

Disco Oyster Ball
The Famous Oyster Disco Ball! – Thomas Derbes II

Saturday’s talks started with a reflection of what Oyster South is and what it could be. Oyster South is a 501(c)(3) charitable organization that strives to connect communities and provide resources to support oyster farmers, cultivate thriving communities, and promote healthy waters (Oyster South’s Mission Statement Here). While South is in its name, the scope of Oyster South has become national with visitors and farmers from both coasts coming to collaborate and share stories of their oyster farms. I was able to talk with farmers from all over the USA, from California, Washington State to New Jersey, North Carolina and even Texas where oyster farming is still in its infancy.

After the reflection, we were treated to two awesome panels, one discussing what chefs look for in an oyster and another on making the most out of social media. Every chef has a different view of what they want in an oyster, but consistency and a certain salty yet umami taste came up as something they strive to serve. Social media also plays a major role in oyster farming and distribution. I remember when I was an oyster farmer, I quickly had to learn how to do social media as this was the best way to advertise and promote your product. Most people have Instagram or Facebook now-a-days, so being able to post your story and availability was always helpful in increasing your following and sales.

oyster extension talk
Talking About What Extension Can Do For You at Oyster South Symposium – Thomas Derbes II

After the lunch break, we had a Three-Minute Tech Talk Session. We heard from graduate students that needed input from the oyster community on their research topics, oyster farm innovators discussing their newest and greatest creations to help oyster farmers, and I was even given the opportunity to talk about what extension can do for oyster farmers. After the tech talks, we heard about the federal crop insurance program for oyster farmers, as well as a great talk from Julie Qiu (a well-known oyster blogger, advocate, writer, and founder of the Oyster Master Guild) on oyster stewardship and how important it is to oyster consumers and the oyster industry. Beth Walton, executive director of Oyster South, closed out the talks with Oyster South Looking Forward, and the future of Oyster South and oyster farming is very, very bright.

Before the Shuck and Tell, I was able to grab a quick “linner” at an incredible restaurant named Cochon. I had previously worked with a chef that came from Cochon, and his stories were the reason I made a reservation. The food in New Orleans is top notch, and Cochon was the cherry on top of a great gastronomy tour.

When it comes to oyster parties, the Shuck and Tell is the ultimate oyster experience. Farmers from all over got together to shuck their product and tell their story of why they oyster farm and the story of the oyster being shucked at the wonderful Southern Food and Beverage Museum (aka SOFAB). I was blessed enough to jump in and help shuck for some passionate oyster farmers and learn more about their farms and history. A relatively new oyster farmer at Salt Revival Oyster Company arranged for a second line to come through SOFAB, and it was an incredible way to cap off a great Oyster South weekend. The Coalition to Restore Coastal Louisiana was there to make sure all shells were recycled and used for future restoration projects.

shucking oysters salt revival oyster co
Shucking With Salt Revival Oyster Company at the Shuck and Tell at SOFAB – Thomas Derbes II

The 2024 Oyster South Symposium was definitely one for the record books. The turnout was fantastic, and the camaraderie and collaboration between oyster farmers, researchers, and enthusiasts was a sight to behold. A major thank you to Bill and Beth Walton for always putting on an incredible symposium, and a big thank you to all the farmers who took time out of their busy schedule to share their oysters and stories. The Oyster South Symposium is an annual event, so keep your eyes peeled for the next symposium. I hope to see you at the next one in 2025!

second line
The Second Line To Close Out Oyster South Symposium – Thomas Derbes II
Using Fish to Grow Food in Aquaponics

Using Fish to Grow Food in Aquaponics

I felt it this morning.  That first bit of humidity in the air.  That sign that it might indeed be time to move my tropical plants back outside and consider digging in my raised beds this weekend.  My seed catalogs are dog-eared, and my local garden store is flush with seedlings.  But then I remember, the squirrels, oh how I loath them.  They love to thwart all my soil-based gardening attempts, despite my feeble attempts to guard my crops.  My option?  Return to one of my first loves, aquaponics.

 

 

I have been practicing aquaculture as a career for over 30 years and aquaponics for about 15 of those.  Aquaponics is a unique food production method that combines aquaculture with hydroponics, or the raising fish with raising plants in a typically soilless system.  The fish produce waste nutrients that bacteria in the system convert into a form that the plants can utilize and extract from the water, thereby cleaning the water for the fish.  The process is a bit more complex than that and I can spend all day talking about it but that is the short version.  Aquaponics can be done in small homemade systems or very large commercial systems.  There are hundreds of designs online and you can spend hours online viewing what others have done.  My recommendation is to start with the research-based information that you can get for free from colleges and universities and then explore once you are confident in the basics.

 

 

In Florida, many types of fish and plants have been successfully grown in aquaponics, however, there are some legal restrictions on some species of fish, so be sure to check before deciding on what fish you will grow.  I chose to grow catfish in my system and over the years produced multiple crops and varieties of lettuce, bok choy, pak choy, cherry tomatoes, Swiss chard, basil, turmeric, and snow peas; the sky is the limit. 

 

If you are interested in learning more about aquaponics in Florida, checkout this page on the Florida Sea Grant website: https://www.flseagrant.org/aquaponics-growing-fish-and-food/, or contact me lgtiu@ufl.edu for additional information or to get added to our aquaponics listserv.

 

Two inch tilapia fingerlings stocked into the Freeport High School aquaponics system in 2024.

NISAW 2024 – Beach Vitex

NISAW 2024 – Beach Vitex

National Invasive Species Awareness Week

ARE YOU AWARE OF THE INVASIVE DUNE PLANT CALLED BEACH VITEX?

I would say most are not.  Though the plant was known over a decade ago, the education/outreach on this species has not been equal to the effort of lionfish. 

Vitex beginning to take over bike path on Pensacola Beach. Photo credit: Rick O’Connor

In 2012 I was contacted by a Gulf Breeze resident who had the invasive vine – beach vitex (Vitex rotundifolia) growing on her property.  They told me that had it under control but felt it was coming from Pensacola Beach.  I checked the EDDMapS database and found only three records of the plant in the state of Florida.  Two were in Jacksonville and one was on Pensacola Beach.  So, I went to investigate. 

It was there… and it was pretty bad.  The front yard was about 25% covered with the plant but a side yard and the back yard were 100% covered.  I surveyed other parts of Pensacola Beach and found the plant in other locations.  If you remember from Part 1 of this series, if you cannot prevent the invasive species from reaching your location, the next thing is Early Detection Rapid Response (EDRR).  This was definitely an EDRR species.  We needed to get on top of this as soon as possible. 

In 2013 I conducted a survey of Pensacola Beach on my bicycle.  I found eight more locations that had the plant.  They were all on private property.  I asked the homeowners if they knew how the plant got there.  Some replied that they had planted it.  Others said that they had hired a landscaper, and this was the plant they had chosen.  Others had no idea where it came from.  At the time, beach vitex was not listed as an invasive species in Florida.  It is now and is also listed as a Florida noxious weed (you can no longer sell it).  It was time for a Rapid Response – education about the plant, its invasiveness, and how to manage. 

Beach vitex is native to the Pacific coast of Asia.  There, it grows in coastal areas where there is plenty of open sunlight and well drained soils.  It was brought to the U.S. as a possible ornamental plant in the 1950s.  There are no records of what happened to those initial plants, but a second wave was brought to North Carolina in the 1980s.  They decided to use the plant in dune restoration after a hurricane and that is when it “raised its ugly head”.

Beach vitex is allelopathic – it releases compounds that pull water away from the native plants causing their death – vitex then takes over the newly empty space – spreading across the beach.  The plant has a taproot from which extend vines that run across the surface of the sand in almost a 360° pattern.  It begins as a soft herbaceous vine, but with time, becomes woody and larger in diameter.  It will eventually grow vertical and become more of a shrub.  In the Carolina’s it took over the dune systems forming a thick monoculture resembling kudzu – giving it their local name “beach kudzu”.  During the summer months the vines can grow very quickly – up to 20 feet in one week – covering the landscape.  At the time they were concerned this would impact sea turtle nesting, now there is evidence that it has.  It also impacted a state listed dune plant they were trying to protect.  North and South Carolina formed a state task force to battle the plant and have spent hundreds of thousands of dollars doing so.  When we first posted we had found it on Pensacola Beach I was contacted by the Carolina Task Force and advised to get rid of it as quickly as possible. 

My most recent survey was conducted in the fall of 2023.  Currently the plant has been found at 100 sites. 

  • 61 of these are on Pensacola Beach.  57 (93%) are east of Casino Beach and 32 of those (56%) are north of Via DeLuna Blvd. 
  • 25 are within Gulf Islands National Seashore and 24 of those are at Naval Live Oaks.
  • 7 sites at Navarre with 6 of those on Navarre Beach.
  • 3 sites are in Gulf Breeze proper. 
  • 2 sites are on Perdido Bay.
  • 2 sites are on Perdido Key.

At this time 74 of the 100 sites have been treated or removed. 

36 of those 74 sites (49%) the plant has not returned.  Treatment continues on the other 38 sites. 

39 of the 61 sites on Pensacola Beach are private property, and it is up to the homeowner to manage the plant.  Florida Sea Grant continues to hold community events to manage the 9 public sites on Pensacola Beach. 

The most recent EDDMapS database shows that beach vitex occurs in two other panhandle counties.  These include Okaloosa and Franklin.  It is very possible they occur in others, but surveys have not been conducted. 

Methods of managing this plant vary.  Small, individual plants can be successfully removed by hand with no regrowth.  Small patches can be removed to the taproots and those can be spot sprayed with herbicide.  Large patches are very difficult to remove by hand and herbicides are recommended. 

If you have questions as to whether or not you have beach vitex in your area, or need advice on how to manage it, contact your county extension office.  It is EDRR time. 

Winter Wildlife Part 2 – Bald Eagles

Winter Wildlife Part 2 – Bald Eagles

Six months ago, they were predicting a colder than normal winter.  In January that seemed to be the case.  We had multiple fronts with high winds and temperatures dropping into the 20s.  But February has been different.  As I type this, it is 62°F and we have had some of the nicest days we have had in a while.  Sunny, low humidity, really nice.  AND THE GROUNDHOG SAW HIS SHADOW!!! So… maybe an early spring? 

With the warmer temperatures I thought we might encounter some of our ectothermic friends (amphibians and reptiles).  On days like we have seen, snakes and turtles will come out from their winter hiding spots to bask in the sun.  Since our early winter article, two cottonmouths have been seen on Santa Rosa Island.  They were both reported as being very sluggish – but that is to be expected – it is still winter, and the temperatures are still low in the mornings.  With that thought in mind we did our February mid-winter hike at Ft. Pickens. 

A cottonmouth found on the trail near Ft. Pickens. Photo: Ricky Stackhouse

The hike was on February 6.  It was a beautiful sunny day, the temperature was 49°F, light wind from the north.  I will say, in the wind it was a bit chilly, but behind the dunes it was very pleasant. 

Along the trail I noticed a lot of green plants, but nothing was in bloom.  Often the change in temperature can fool flowering plants into blooming early.  However, the pine trees were full of male and female cones.  They were definitely getting ready for pollen season. 

The female cone of a pine tree. Photo: Rick O’Connor
The male cones of this pine tree are releasing the all too familiar yellow dust pollen. Photo: Rick O’Connor

I began in the middle of the island in the hardwoods, moving slowly hoping to find a basking snake.  I did not, but I did see numerous woodland songbirds.  I am not a good birder, but I believe there were varieties of warblers, titmice, wrens, and the always present mockingbird.  I did spot a great blue heron on a nest.  Birds are endothermic – and this is their time – a great time to do some birding if you like that. 

Blue herons often use the tops of pine trees for nesting. Photo: Rick O’Connor

I took another trail heading towards the beach.  This crossed through more woodlands before reaching the dunes and the shore.  It was in the woodland area I came across a bald eagle nest.  Many of us remember a time when we never saw bald eagles around here.  Now they are becoming more common and nesting all around the bay area.  These awesome birds are similar to dolphins, sea turtles, manatees, and the Blue Angels – you never get tired of seeing them.  It is always an exciting moment when one flies over.  

The American bald eagle. Photo: Rick O’Connor

There was no wildlife on the beach that day but there were plenty of tracks.  Mammals, even in the winter, still prefer to move around under the cover of darkness.  I found the tracks of armadillo and raccoon, common mammals on our island, but there was another set that was harder to identify.  The paw had the imprint of a cat (no claws visible) but the track was quite large for a feral cat.  If it was, it was a big cat.  I have seen bobcats in the Gulf Breeze area, and you cannot rule them out, but the pattern of the stride appeared more like an otter.  Otter tracks would be webbed – these were not – so… I am not sure what it was.

Most encounter island mammals by finding their tracks. Photo: Rick O’Connor

Leaving the beach, I returned to the inland trail heading back to the truck.  On this portion of the trail, you cross over ponds just outside the walls of the fort.  As I glanced across the water – hoping for a swimming snake – I saw something else.  It surfaced briefly and then dove again.  At first, I thought it was a diving bird, such as a cormorant or loon, but when it resurfaced, I saw that it was not.  It was an otter.  I had seen otters before in this area, and other pond areas on the island, but – like the bald eagle and dolphin – it is always exciting to see them again. 

Based on this hike, it is still the time of the “warm-blooded”.  Birds and mammals were the creatures most visible.  We will see if this warming trend continues.  Maybe during the late winter hike in March, we will see some of the “cold-bloods” come out.  Maybe it WILL be an early spring. 

Get out and hike – the weather is fine! 

Tagging Wildlife Part 2 – Leatherback Sea Turtles

Tagging Wildlife Part 2 – Leatherback Sea Turtles

The leatherback sea turtle is the largest of the five species that have been found in the northern Gulf of Mexico.  With a carapace (top shell) length between 6-7 feet and weighing between 800-1000 pounds it is truly a magnificent creature.  Any encounter with them is amazing. 

Most encounters occur with fishermen or divers who are out searching for artificial reefs to fish or dive.  Though very rare, they have been known to nest in this area.  They feed exclusively on jellyfish and will follow them close to shore if need be.  But what do leatherbacks do with most of their time?  Do they hang offshore and follow jellyfish in?  Do they circle the entire Gulf of Mexico and we see them as they pass?  Based on past studies, many encounters with this turtle occur in the warmer months.  They often become entangled in commercial fishing longlines set in the central Gulf of Mexico.  But what do they do during the fall and winter?  One of the tagging projects presented at a recent workshop tried to answer that question. 

The project was led by Dr. Christopher Sasso of the National Oceanic and Atmospheric Administration.  The tag chosen for this was a satellite tag.  Since the leatherback must surface to breath air, and often is found near the surface following jellyfish, orbiting satellites would be able to follow them.  As we mentioned in Part 1, catching the creature is step 1, and catching a six-foot 1000-pound sea turtle is no easy task. 

The team used a spotter aircraft to locate the turtles.  Once found, the pilot would radio the chase boat who would zip in with a large net.  The net was connected to a large metal hoop and was designed to give way once it was around the turtle.  Once in the net the turtle was hauled onto a small inflatable boat where the work of tagging could be done.  They would measure the animal, take blood samples, place a PIT tag within them (similar to a microchip in your pet) and then attach the satellite tag by a tether to the tail end of the turtle before releasing it.  The entire operation took less than 30 minutes.    

Between 2015-2019 19 leatherbacks were tagged in the northern Gulf.  17 of these were females and 2 were males.  Data obtained from these tags ranged between 63 and 247 days at liberty.  The behavior the team noticed was divided into foraging behavior (feeding on jellyfish) and transiting behavior (direct swimming ignoring all). 

The turtles foraged in this part of the Gulf until the fall season.  At that point most of them moved south along the Florida shelf, past the western peninsula of the state, heading towards the Keys.  A few chose to swim directly south against the Loop Current, and a small number remained in the area. 

Those moving along the Florida shelf appeared to be foraging as they went.  Those crossing the open Gulf may have foraged some but seemed to be focused on getting south to the nesting beaches.  Almost all of the turtles entered the Caribbean on the east side of the Yucatan channel, following the currents, with their final destination being their nesting beaches.  When they returned, they did so in the warmer months and used the western side of the channel – again following the currents – until they once again reached the northern Gulf and foraging began again.  One interesting note from this study, the two males tagged did not leave the Gulf.

The tagging studies do show that leatherbacks use the Gulf of Mexico year-round.  They usually head south to the Caribbean when it gets colder and use the currents to do so.  It is during the warmer months we are most likely to see them here foraging on jellyfish.  It is an amazing experience to encounter one of these large turtles.  I hope you get to experience it one day.

Satellite tracks of leatherback movement in the GoM. Red (2015), Blue (2018), Black (2019). Image: Sasso (et.al.) 2021.

Reference

Sasso, C.R., Richards, P.M., Benson, S.R., Judge, M., Putman, N.F., Snodgrass, D., Stacy, B.A. 2021. Leatherback Sea Turtles in the Eastern Gulf of Mexico: Foraging and Migration Behavior During the Autumn and Winter. Frontiers in Marine Science., Vol. 8., https://doi.org/10.3389/fmars.2021.660798.