The Estuary’s Natural Filtration System Pt. 1

The Estuary’s Natural Filtration System Pt. 1

The Panhandle of Florida is home to many estuaries along the coast, from the Escambia Bay System in the west to the Apalachicola Bay System in the east. These estuaries are very important and are the intersection where rivers (fed from their respective watersheds) meet the Gulf of Mexico and contain many different organisms that help filter the waters before they reach the Gulf. These organisms include oysters, marsh plants, seagrasses, scallops, tunicates, and other invertebrates. In this two-part article, we will explore marsh plants, seagrasses, oysters, and scallops.

Marsh Plants

Marsh Plants is a broad term for a family of grasses that lines the shore and contain grasses like Smooth Cordgrass (Spartina alterniflora), Saltgrass (Distichlis spicata), and Gulf Cordgrass (Spartina spartinae). These plants help trap sediments before they enter the estuary and are excellent at erosion prevention. When the water encounters the plants, it slows the flow, and this allows for sediments to collect. Marsh Plants are a great tool for shoreline restoration and are a major part of the Living Shorelines Program. The roots of the plants are also very efficient at removing nutrient pollutants like excess nitrogen and phosphorus which are major influencers in eutrophication. Marsh Plants also absorb carbon dioxide from the atmosphere and have been tabbed as “superstars of CO2 capture and storage.” (CO2 and Marsh Plants)

marsh grass

Marsh Grass and Oyster Reef in Apalachicola, Florida – Thomas Derbes II

Seagrasses

Seagrasses are different than Marsh Grasses (seagrasses are ALWAYS submerged underwater), but they offer some of the same ecological services as Marsh Grasses. The term seagrasses include Turtle Grass (Thalassia testudinum), Shoal Grass (Halodule wrightii), Widgeon Grass (Ruppia maritima), and Manatee Grass (Syringodium filiforme) to name a few. Seagrasses help maintain water clarity by trapping suspended sediments and particles with their leaves and uptake excess nutrients in their roots. Seagrasses are very efficient at capturing carbon, capturing it at rates up to 35 times faster than tropical rainforests. (Carbon Capture and Seagrasses) They also provide habitat for crustaceans, fish, and shellfish (which can filter the water too) and food for other organisms like turtles and manatees.

Grassbeds are also full of life, albeit small creatures.
Photo: Virginia Sea Grant

Oysters

Crassostrea virginica (or as we know them, the Eastern oyster) is a native species of oyster that is commonly found along the eastern coast of the USA, from the upper New England states all the way to the southernmost tip of Texas. Eastern oysters are prolific filter feeders and can filter between 30-50 gallons of water per day. As filter feeders, they trap nutrients like plankton and algae from the environment. In areas of high eutrophication, oysters can be very beneficial in clearing the waters by trapping and consuming the excess nutrients and sediments and depositing them on the bottom as pseudo-feces. With oyster farms popping up all over the Gulf Coast, the filtering potential of estuaries is on the rise. (Between the Hinge)

Oysters

Oysters, The Powerful Filterers of the Estuary – Thomas Derbes II

Scallops

Bay Scallops (Agropecten irradians) were common along the whole Florida Gulf Coast, but their numbers have taken a recent decline and can only be found in abundance in the estuaries to the east of St. Andrews Bay in Panama City, Florida. Scallops make their home in seagrass beds and are filter feeders. While scallops do not contain the filtering potential of an oyster (scallops filter 3 gallons of water per day as an adult), they are still a key part of filtering the estuary. Just like oysters, scallops feed off of the suspended particles and plankton in the water column and deposit them as pseudo-feces on the bottom. The pseudo-feces also help provide nutrients to the seagrasses below.

Bay Scallop.
Photo: FWC

I hope you enjoyed this first article on filterers in the estuary system. While oysters are known as the filterers of the estuary, I hope this has opened your eyes to the many different filterers that call our estuary home. Stay tuned for Part 2!

Master Naturalists Visit The Springs

Master Naturalists Visit The Springs

Imagine you’re out on a kayak in a pristine Florida freshwater spring, surrounded by wildlife, beautiful trees, and natural formations. You have all the knowledge of what to expect and get excited to call out the different species of plants and animals you can spot. You’re surrounded by 10-15 like-minded nature enthusiasts who celebrate every species found and share tips and tricks on how to identify species more efficiently (Watersnakes vs Cottonmouths… Very Important!) If this sounds like a great time, then the Florida Master Naturalist Program might be right for you!

A Great Group of Master Naturalist Students Hiking Around Ponce De Leon Springs

A Great Group of Master Naturalist Students Hiking Around Ponce De Leon Springs- Thomas Derbes II

Since I am a fairly new Extension Agent, I am getting to experience the course from a unique perspective. The Freshwater Course was my first time being an instructor, but it was also my first time going through the course. We started in March and are about to do our graduation next week, but this previous Tuesday was by far the best experience I have had in the course. We started the day at Ponce De Leon Springs State Park with a hike along a tannic creek. Once you reach the end of the trail, you can take the route back that is along the crystal-clear waters that flow from the springs. Largemouth Bass and Bluegill were abundant, and we even spotted a Mountain Laurel Tree. There is a beautiful picnic and viewing area along the springs, and you can even take a dip right in the springs. Even though this isn’t the famed “Fountain of Youth” springs, I think Ponce De Leon himself would’ve had a long soak in these waters.

Mountain Laurel Flower

A Flowering Mountain Laurel (Kalmia latifolia) at Ponce De Leon Springs – Thomas Derbes II

We then took a detour to a Pitcher Plant bog that was along the route to Morrison Springs. After a quick hike, we made it down to a bog that was filled with multiple types of Pitcher Plants, Sundews, and my favorite, Orange Milkwort. We also found a creek and found some slimy friends like a cute tiny frog and an unknown larvae/creepy crawly. We then loaded back up and made the very short trek to Morrison Springs, kayaks in tow.

Orange Milkwort

An Orange Milkwort (Polygala lutea) Near a Pitcher Plant Bog – Thomas Derbes II

When we arrived at Morrison Springs, we had a quick lunch and learn from Dr. Laura Tui about the springs and headed over to the boat launch. We launched our kayaks in the almost crystal-clear waters and set out to find the connection to the Choctawhatchee River. We had our own kayak flotilla, and we were able to talk about all the potential species we would spot. Along our nice, relaxing paddle, we spotted many different birds, turtles, and a Green Watersnake (which I missed out on)! We finished the paddle with a trip around the springs and the vent and slowly loaded up the kayaks to call it a day.

Kayaking on a spring

FMNP Instructor Rick O’Connor Leading the Kayak Brigade – Thomas Derbes II

If this sounds like something you want to be apart of, you can check out what Master Naturalist Courses are available in your area by Clicking Here!

 

Searching for Mangroves in the Florida Panhandle

Searching for Mangroves in the Florida Panhandle

In 2005 I was leading a field trip with high school students in a salt marsh on Santa Rosa Island near Pensacola Beach.  As we explored a brackish water creek, we came across a three-foot red mangrove tree, prop roots and all.  To say we were surprised and excited would be an understatement.

Most know that mangroves are trees that can tolerate seawater and grow along estuarine shorelines across the tropics, including south Florida.  They can form dense forests that support all sorts of aquatic and terrestrial wildlife.  They need calm protected waters to establish themselves but once established are excellent at protecting shoreline communities during hurricanes.  However, they cannot tolerate cold weather, only surviving freezing temperatures for one or two nights.

The red mangrove.
Photo: University of Florida

Growing up in Pensacola we would often find red mangrove propagules (seedlings) washed ashore arriving from the tropical parts of the Gulf.  They were generally on the Gulf side of Santa Rosa Island and Perdido Key but never germinated.  If they were carried into the estuary, and found a protected lagoon to begin germination, they would not survive our winters.  This is what made finding an established three-foot mangrove in a lagoon off Santa Rosa Sound in 2005 so surprising.

 

Mangrove propagule washed ashore. Photo: Rick O’Connor

Historically mangroves were not found north of Tampa Bay.  However, in recent decades they have become established as far north as Cedar Key.  Trying to determine whether the mangrove we found was the northern most in Florida I found that they were also expanding along the east coast of Florida as far north as St. Augustine, and there were records in the Jacksonville area.  Many attribute this to climate change.  Our winters are milder than they were when I was a kid, and this may be leading to what many are calling the “tropicalization of northern Gulf of Mexico”.  Not only mangroves, but other historically south Florida species, such as snook and bonefish, have been reported along the panhandle.

In 2017 I was leading another high school group on a field trip in a salt marsh in Big Lagoon State Park.  We found a germinated seedling of a red mangrove doing very well.  We explored more and found seven others in the nearby area.  How many more were growing in the Pensacola Bay area?

A small red mangrove growing in Big Lagoon near Pensacola FL
Photo: Rick O’Connor

We partnered with a research team from Dauphin Island Sea Lab who was looking into this as well.  The team included extension agents and specialists from Florida and Mississippi-Alabama Sea Grant, as well as biologists from the National Estuarine Research Reserves in Mississippi, Alabama, and Florida panhandle.  Each county/region selected 10 transect sites that had the highest probability of mangroves to monitor each year.  Mangroves appear to be established on some of the Mississippi barrier islands, as well as in St. Joe Bay.  Individuals have been reported from Bay County.  A ninth mangrove was found in Escambia County but a hard freeze in 2018 killed them all.  Since then, one young multi-year red mangrove was found on NAS Pensacola.  It died in the hard freeze of 2023.  Despite the hard freezes, those established in St. Joe Bay seem to be holding on.  I decided to make a visit and see.

A red mangrove growing at NAS Pensacola. Photo: Whitney Scheffel.

 

Black mangroves growing near St. George Island in Franklin County.
Photo: Joshua Hodson

Wading out from the buffer preserve with Gulf County Sea Grant Agent Ray Bodrey, we found relatively large patches of mangroves, and seeds suggesting active expansion was ongoing.  But I noticed the species we were seeing were black mangroves.  I mentioned to Ray that what we had seen in Pensacola were red mangroves.  He said that the red mangroves have a hard time here as well.  Black mangroves are more tolerant of cold weather, and it is they who are establishing these large patches.  There are reports of large patches of mangroves on the Mississippi barrier islands – and they are the black mangroves as well.  I know that black mangroves have been established in the Chandeleur Islands in Louisiana for decades.  I am convinced that if black mangroves seeds were to reach protected lagoons in Pensacola Bay, they would probably do well here as well.

I continue to conduct our transects each year in the Pensacola Bay area.  I have a couple of trained volunteers helping me but could always use more.  If you think you have seen a mangrove growing in the Florida panhandle, we would love to know and document their location.  We know they are established in Gulf County, so our focus is now Escambia to Bay counties.  If you think you have seen one, contact me at roc1@ul.edu or your county Sea Grant Agent.

Planting Trees this Florida Arbor Day? Get them in the ground right!

Planting Trees this Florida Arbor Day? Get them in the ground right!

Pine tree saplings. Planting, growth. UF/IFAS Photo by Dawn McKinstry

It is Florida Arbor Day and all across the state people will be picking up trees and planting them for the future. It is also the time of year where large reforestation efforts are underway to get the next generation established. Planting trees is one of the most hopeful activities you can do. It takes a long time for a tiny forest seedling to become a titan of the forest. Similarly, a larger nursery grown tree planted in an urban setting takes a long time to get to the large shade tree that is envisioned. Whether in an urban or forest setting getting tree planting right is the difference between success and failure. Today we celebrate Florida Arbor Day, in large part because this is the best time of year to plant trees in our climate. Planting trees in the cold of winter means they can focus on growing and establishing a root system before the leaf and shoot growth they put on in spring. This is why states move their Arbor Day observance and the most southern and warm states like Florida, Louisiana, and Texas have the earliest celebrations.

So, what goes into planting a tree properly? Well, it is a lot more than green side up that is for sure. It takes lots of planning, care, and attention to detail. The specifics are very different when planting thousands of forest seedlings across a tract vs just a few large trees in a park. The basic principles are the same though and we will start with forest trees. For reforestation in forests the journey starts in specialized forest nurseries that produce the millions of trees needed to serve the forest industry of the area. Let’s take a deeper dive into getting tree planting right in this important time of year.

Tree Planting Tips in Forested Settings

Getting tree planting right in forest settings really starts with the tree species and seedlings used. If this is selected wrong, the seedling quality is low, and the seedlings are not handled correctly in shipment and the field; complete planting failures can occur. A failure is very costly as you not only have the cost for this year but the replanting cost the next, plus you lost a year of forest growth. Thankfully, it is very rare now since we know good planting protocols and follow them regularly. Forest seedling nurseries are extremely high tech operations and now provide the best seedlings in the world here in the U.S. The U.S. reforestation system is the envy of the world and the Southeast is the jewel in that crown routinely planting the highest amount of trees of any timber region globally. Entire research divisions at major universities plus state forest agency reforestation sections and the U.S. Forest Service Reforestation Division all work in concert to ensure our forests’ future. That is not to mention the massive private nurseries run by top flight companies that are experts in reforestation and forest management. Landowners and others planting trees now have the best access and reforestation material ever available in private hands, and companies provide the highest quality seedlings available in terms of seedling quality and improved tree genetics. By spending a bit more in reforestation a huge return can be generated when a stand is mature. Landowners can take advantage of this outstanding leap in reforestation technology, but old-fashioned due diligence and good planting technique is key to realize the outcome. First and foremost, the right tree species has to be matched with the right site and range of conditions where it will thrive. Off-site plantings that are not compatible with that species (such as loblolly pine on sandhills) may succeed from a survival standpoint only to fail long term (i.e. stunting and lack of volume development). Care of the seedlings during the planting operation is key to success and establishment though. Seedlings must be stored and cared for properly until planting is completed. Poor techniques will cause issues with root structure and growth and poor care and excessive storage times before planting will cause stress that can result in seedling death or loss of vigor that leads to loss of growth. Plant seedlings right though and you will have an excellent stand. Here are some tips to get tree planting right:

  1. Work closely with a good consulting forester, forest nursery, and or reforestation service provider. Coordinate seedling delivery, storage, and planting well in advance of the operation.
  2. Assess the weather conditions leading up to planting and do not be afraid to cancel if conditions are questionable.
  3. Store seedlings in refrigerated trucks or a refrigerated storage facility (optimal) or tarped in an area that is out of the wind and elements.
  4. Bareroot seedlings are the most sensitive and need to be planted as soon as possible and by skilled crews. Bareroot are prone to J-rooting and other issues if not planted with the correct equipment for the soil conditions and by highly trained and skilled crews. If machine planting ensure test runs are done to make sure the planting trench and packing system are working well and planting seedlings correctly.
  5. Ensure the seedling type and planting conditions are communicated to the crew well ahead of arrival for logistical purposes. A Consulting Forester is invaluable here and results are usually better when a landowner uses a consultant that can coordinate. Issues like planting crews showing up with 4 inch container dibbles (the industry standard) when the landowner has ordered 6 inch containerized seedlings can be a disaster.
  6. Conduct quality control and spacing checks throughout the planting operation to make sure seedlings are in good condition and being planted according to best practices and the planned reforestation operation. Communicate with the crew on changes needed. Crews want to do a good job and usually enjoy working together with the forester or landowner to get the best job done.

Urban Forests

Man walking a trail in Oak Hammock. UF/IFAS Photo: Thomas Wright.

We have passed the forest tree category and we move to the urban forest and what is really the art of individual tree management. Urban forests are very different from natural forests, but they are still forests and the management principles of forestry still apply. The primary difference is planting operations in natural settings involve thousands of trees and usually count on a certain amount of loss. Urban reforestation and tree planting can rely on just a few to several hundred trees depending on the scope. The main difference is urban operations use single large container trees that have been grown for several years in the nursery and will be planted in very specific locations. There is a significant focus on each tree and the investment per tree is huge by comparison. Given this it is highly desirable that each tree live and the expense and investment in each individual tree necessitates this. Urban forests also have ready access to things like irrigation, tailored fertilizer, and many other tree care options to improve establishment. Most Arbor Day activities focus on these urban planting operations and things like tree dedications. To get it right let’s look at what we need to do to get urban trees planted right in our urban forests.

Tree Planting Tips for Urban Areas

Urban trees have a rough life compared to their relatives in the natural forest. Natural forests do not have the myriad of issues that the urban forest does, but that does not mean trees can’t thrive in our urban ecosystem. Here in the Florida Panhandle, we have some of the largest and most densely covered urban forests in our city centers and metropolitan areas. In fact, our urban forest tree cover is some of the highest in the country. This is likely due in large part to our lush semi-tropical forest ecosystem that naturally thrive here. With good management our Urban Forest just sort of forms and towers over our urban landscape. Another factor supporting this is the local community commitment to tree planting and tree care. The vast majority of our incorporated communities are Tree City USA certified and many private HOA communities have HOA rules that require tree cover maintenance. These are good things for our tree cover and our communities are much more livable, enjoyable, and healthy due to our amazing urban forest. To maintain our urban forest though we need to plan tree planting and management, if for now other reason than to replace trees that die or are lost over time. As our area grows and develops new trees need to be planted in urban areas to replace ones lost as the natural forest was converted. Doing this right means more success, healthier trees, and better use of public funds through better survival. Here is what you need to know to plant a tree right in your urban setting.

  1. Right Tree Right Place! Planning is key and far too many times it is overlooked. Urban forests have limited root and crown growing room. Planting a towering Southern Red Oak in an area with only space for 40% of this tree at maturity will not be a success. Yes, that tree is small and dainty now, but in our climate it will grow into a towering tree in no time. Similarly, trees that drop fruit (like Sweetgum) or create a bit of a mess (like Sycamore) may not fit well in an area. Perform a through assessment of the planting spot and determine what size and characteristics are needed. Then compare it with our outstanding variety of native trees and select the right one.
  2. Thoroughly assess the planting site and determine any mitigations that are needed. Locate and determine all utilities, rights of way, and other issues. Remember that utilities have the right to trim any tree that comes into their right of way and that includes roots and branches. If the tree will interfere consider relocation or selecting a smaller tree. Sometimes a tree will tolerate the maintenance activities associated with a utility or right of way but sometimes it will not.
  3. Determine the soil characteristics on site and perform a soil test. This is probably the most overlooked issue, and many people plant trees without any thought to the soil. Since trees are big and tough their site needs often get ignored. It is easy to forget trees have preferences in water depth, PH, density, and nutrient needs. Compaction is particularly a problem in urban settings and a soil test can detect it. If compaction is a problem, develop a plan to mitigate it prior to planting.
  4. Determine if amendments are needed and/or beneficial and apply accordingly. For urban trees preparing a planting hole and root establishment zone is critical to success. Fortunately we have some of the best options and methods of doing this now that we ever have before. Biochar, soil mycorrhizae (beneficial fungi) inoculants, long term release tailored fertilizers, and multiple other options mean a planting hole can be so much more than a hole. Explore the options and select what time and budgets allow, the tree will certainly do much better with good amendments to establish a strong root system early.
  5. Plant the tree properly and using good techniques. You can take a whole class on this and still have some more to gain on technique. It is a much more complex operation than it initially appears. It is more than just getting the tree in the ground straight and level. It starts from the minute the tree arrives from the grower to the maintenance over the establishment years. Common mistakes are too small/too large a hole, incorrect depth, improper backfill and setting, failure to mulch or improper mulching technique.

Arbor Day is a good reminder that trees are a valuable and important part of the world we inhabit. That is true in a pristine forest or under the favorite shade tree at your local golf course. Except for some of the shortest-lived trees most will certainly outlive us. The longest will outlive tens of generations of we humans. Let’s hope that the trees we plant this Arbor Day are successful in establishment and benefit many generations to come.

The Last of Fall Foliage is Still Available in the Panhandle

The Last of Fall Foliage is Still Available in the Panhandle

Fall color and leaf peeping is usually the last thing people think of on the Gulf Coast. Indeed, most people bemoan our lack of fall foliage and do not realize that if you know where to look beautiful fall vistas can still be seen. When the rest of the country has dropped leaves and past peak foliage our local scene is getting to the best show. Fall is a slow process here on the Gulf Coast and the area is the last to see the peak fall color. Here it is more like early winter color. The several weeks around Thanksgiving are some of the best times to see what our local deciduous hardwood trees have to offer. In a region dominated by pines and evergreen hardwoods the shows are few and far between. While our local forests don’t put on the spectacular shows that the Appalachian and Northeast hardwood forests do, it doesn’t mean we don’t have anything to offer. If you are looking for a local show you will need to know where to find areas with trees that turn the orange, gold, and red you hope to see.

Autumn leaves. Photo Courtesy UF-IFAS Photo Database

Trees with leaves that change colors are called deciduous, meaning that they drop their leaves each year during winter dormancy. Only these deciduous trees put on a show in the fall and early winter, and not all of these are hardwoods. While rare some conifers are deciduous as well, and our local bald and pond cypress are conifers that are deciduous. Conversely, we have evergreen and semi-evergreen hardwoods here like live oak, southern magnolia, and laurel oak. Evergreen versus deciduous is actually a tree’s way of adapting to climate characteristics. Evergreen trees photosynthesize year-round while deciduous trees store energy and shut down through the winter by shedding their leaves. It is this shutdown of photosynthesis and chlorophyll in the leaves that produces fall color and leaf drop. Chlorophyll is the compound in leaves responsible for photosynthesis and for the green color we see most of the year. When deciduous trees go dormant the chlorophyll is pulled out of the leaves as the trees prepare for winter dormancy. But Chlorophyll is not the only compound in leaves, and the other compounds that are left behind produce the color we see each fall. Carotenoids, particularly beta-carotene, produce the oranges; while anthocyanins produce reds and flavonoids produce yellows. The amount of these compounds in a leaf result in the colors we see. The change is triggered by environmental signals, particularly temperature. Temperatures need to dip at least into the 50 degree range regularly before changes occur. Given our variable weather pattern here on the gulf coast that means it is hard to predict the exact date when leave color will start and peak. It also means trees change slowly and often do not produce the drastic change seen to the north. The good side of this is we get to enjoy fall color much longer into early winter. This is the last region of the country where you can observe the annual leaf color show.

To enjoy leaf color, you need to know where to look here and what to look for. The best areas are river basins and wetlands as those areas have the largest concentration of deciduous trees. Swamps of cypress and mixed hardwoods can put on quite a show.  Bottomland hardwood forests in river floodplains usually have the best show and turn early. Uplands are not out of the question either, while they typically are dominated by mostly pines in our region scattered oak, sweet gum, and hickory give splashes of color. On sandhills turkey oak can turn a deep red and usually is one of the later trees to turn. As the upland grasses go dormant for the winter, they can also provide a splash of landscape color. If you know where to look some of our parks and natural areas across the Panhandle provide excellent spots to see leaf color.

The Apalachicola Basin provides some of the best scenic vistas available where foliage color turns. The bottomland and mixed pine hardwood forests of the bluff lands make beautiful areas to explore in fall and early winter. Torreya State Park and Three Rivers State Park are both excellent areas to explore when looking for leaf color in the Eastern Panhandle. In the Central Panhandle Falling Waters and Florida Caverns State Parks are great areas to visit. In the Western Panhandle Blackwater State Park, Blackwater State Forest, and parks along the Choctawhatchee River provide good leaf color. A scenic drive along rural highways is a great way to see color as well, with areas close to the state line being particularly good for a nice early winter drive. Get out and see the last of fall colors while they last, in a week or so they will be gone until next year.

It’s Been a Cruel Summer, Especially for Southern Oyster Farmers

It’s Been a Cruel Summer, Especially for Southern Oyster Farmers

There is a term that all oyster farmers dislike, it is almost like that one villain from a famous book/movie series where they shouldn’t say his name. That term is “unexplained spring/summer mortality” and it has been a growing issue along with the expansion of oyster farming throughout the southeast. While the art of oyster farming has been around since the time of the Romans, it is a relatively new venture here in the Gulf of Mexico, and Florida is home to over one hundred oyster farms. These farms are meticulously cared for by the oyster farm crew, with many different anti-fouling techniques and biosecurity measures in practice to provide the customer with a safe, clean product that you can consume even in the months without an R (another article on that coming later). Each year, farm managers can expect a 10-30% mortality event during the transition from winter into spring/summer, hence the term “unexplained spring/summer mortality.” Researchers and scientists from all over the southeast have been actively working to find a cause for this phenomenon, but the answer has been hard to find.

Dead, market ready oysters from one bag. Cause of death, “Unexplained Mortality Event 2022”
Photo by: Thomas Derbes II

Our Pensacola Bay has been a hotbed for oysters lately; The Nature Conservancy recently constructed 33 oyster beds along Escribano Point in East Bay, the establishment of the Pensacola & Perdido Bay Estuary Program, acquisition of a $23 million restoration grant with $ 10 million towards 1,482 acres of oyster restoration, and the establishment of oyster farms and hatcheries. In Pensacola Bay, there are currently 5 oyster farms in operation, one of those farms being a family-owned and operated Grayson Bay Oyster Company. Brandon Smith has been managing the business and farm for over 4 years now and has experienced mortality events during those prime spring/summer months. In recent years, they have experienced mortality events ranging from minimal to what many would consider “catastrophic,” and reports from around Florida and the Southeast convey a similar message. Concerned for not only the future of his family farm, but other oyster farms in the Southeast, he has been working with the most experienced institutions and groups in 2022 to possibly get an answer on his and other local “unexplained mortality events.” Each road led to the same answer of “we aren’t quite sure,” but this didn’t deter Smith or other the farmers who are dealing with similar issues.

In 2023, Smith was invited to participate in a Florida-Wide program to track water quality on their farm. This project, led by Florida Sea Grant’s Leslie Sturmer from the Nature Coast Biological Station in Cedar Key, Florida, hopes to shed some light on the changes in water quality during the transition from winter to spring and spring to summer. Water samples have also been taken weekly to preserve plankton abundance and the presence of any harmful algae if a mortality event does occur. With the hottest July on record occurring in 2023, temperature could play a role in mortality events, and now researchers are equipped with the right tools and open lines of communication to possibly find a solution to the problem.

3-month-old seed being deployed out on Grayson Bay Oyster Company’s farm in Pensacola, Florida (2023).
Photo by: Thomas Derbes II

As with traditional farming on land, oyster farming takes a mentally strong individual with an incredible work ethic and the ability to adapt to change. The Southeast has a resilient system of oyster farmers who display these traits and continue to put their noses down and “plant” seed every year for the continuation of a growing yet small industry, even through the hardest of trials and tribulations. Through collaboration with local and state institutions, stakeholders, programs, and citizens, oyster farmers are hopeful that they can solve this “unexplained mortality event” and help develop resilient farming techniques. An important message is local farms that have environmental and economic impacts cannot exist without the support of their community.

If you’re interested in tracking water quality on select farms, including Grayson Bay Oyster Company, the website is https://shellfish.ifas.ufl.edu/farms-2023/ and it is updated monthly.