by Rick O'Connor | May 6, 2022
Imperiled (verb) – put at risk of being harmed, injured, or destroyed.
In 2021 the Florida Department of Environmental Protection classified 44 area waterways in the Pensacola Bay System as imperiled. Such designations are based on an environmental parameter making it unhealthy for one reason or another. When we think of an unhealthy body of water, many times we think of sewage. There are nine bodies of water in the Pensacola Bay System classified as imperiled due to the fecal bacteria concentrations within. There are another seven for bacteria levels high enough to close them for shellfish harvesting. This is a total of 16 bodies of water having bacteria issues (36% of the 44 designations).
Closed due to bacteria.
Photo: Rick O’Connor
Low dissolved oxygen and fish kills is another parameter we think of. There are four waterways designated imperiled due to high nutrients (a cause of hypoxia and fish kills), and one for low dissolved oxygen readings itself. This is a total of five (11% of the 44 designations).
Dead redfish on the eastern shore of Mobile Bay.
Photo: Jimbo Meador
But you may be surprised to learn that 23 of the 44 imperiled water bodies (52%) are designated based on the mercury content of the fish sampled there.
Most people are aware of the mercury issue in fish. Many of those living in the Pensacola Bay area are aware of this issue locally, but they may not be aware that with the 2021 designations, it is the primary reason for many listed. To be fair, it is not that mercury issues are increasing, it may be more that there are 97 waterways in the Pensacola Bay System being considered for delisting in 2021 and those are listed for a variety of other issues. What it is stating is that with the 44 that remain imperiled, mercury is the primary cause.
We have all heard of mercury in fish, but where is it coming from? What health problems does it cause? And is there anything that can be done to make these bodies of water healthier?
Mercury is a naturally occurring element on the periodic table. It is element #80, meaning it has 80 protons and electrons, one of the larger naturally occurring elements. It is a silver-colored liquid at room temperature, one of only two naturally occurring elements in the liquid phase at these temperatures – the other being bromine. It is sporadically found throughout the earth’s crust, usually combined with other elements. There are two forms of mercury – mercury (I) and mercury (II) – indicating the number of cations available for sharing or transferring in compound bonding. Mercury (II) is more common in nature.
The element has been of interest to humans for centuries. There are records of it buried beneath the Mayan pyramids, though we are not sure how it was used, and it was used in Chinese medicine centuries ago. The Spanish used it to help extract silver from mines during their colonial period around the world. It was also used in separating fir from skin in felt hat making in the 19th century. Hatters who used this method eventually had neurological problems and became known as “mad hatters”, an idea used in Lewis Carol’s Alice’s Adventures in Wonderland.
In more modern times it has been used in fillings for tooth cavities (including my own) and preserving specific vaccines. Being a good conductor of electricity and not of heat, it is used in numerous electrical components, fluorescent lighting, and batteries. Some cultures used it to help “whiten their skin” and a common use is in the processing and production of certain industrial chemicals. Today, due to the toxic properties of mercury, many of these uses are no longer.
Fluorescent lighting contains mercury.
Mercury is obtained for these uses by mining their ores. The most sought after ore is cinnabar, a red-colored rock found around the world. Mercury (II) sulflide (HgS) is a common compound found in cinnabar. When heated and oxidized it will produce sulfur dioxide and elemental mercury.
HgS + O2 à Hg + SO2
Cinnabar is the most common ore mined for mercury.
Photo: Classic Crystal
The problem with mercury is that it is toxic, and some forms of mercury are more toxic than others. The element is known to cause brain, kidney, and lung issues. It also can weaken the immune system. It is most known for the neurological problems it causes. Sensory impairment, lack of motor skill coordination, psychotic reactions, hallucinations, tremors and spasms have all been connected to exposure to mercury. There are concerns with the neurological development within the fetus if exposed to mercury and many of the health advisories target women of childbearing age who are pregnant or considering it. They have included the very young and the very old in their recommendations that these members of the population do not eat more than 6 ounces of fish (or shellfish) that have high mercury contamination.
Mercury contamination in fish.
Image: BBC
The organic forms of mercury, dimethylmercury and methylmercury, are the more toxic forms. These are introduced to the environment both naturally and from human activity. Once in the aquatic environment they are absorbed by the phytoplankton (microscopic plants in aquatic environments). Methylmercury accumulates in lipids (fats) within the cell at relatively low concentrations (phytoplankton are not large). However, they are not passed by the creature. The slightly larger zooplankton (microscopic animals) feed on the phytoplankton and accumulate the mercury they have stored. Feeding on a lot of these, they accumulate even more mercury. The zooplankton are consumed by small fish, who eat a lot and accumulate even more mercury. Then the mid-sized fish consume them, and the larger fish consume those, and on and on. The top predators have accumulated enough methylmercury to be hazardous to human health IF they are consumed by people. This process of increasing the concentration of mercury through the food chain is known as biomagnification – “magnifying the problem”.
So, which fish are of concern?
Based on the Florida Department of Health for freshwater systems in Escambia County.
- Bluegill, Channel catfish, Largemouth bass, Long-eared sunfish, Red-eared sunfish, Spotted sunfish and Warmouth from the Escambia River system – you should not eat more than one/week.
- Do not eat chain pickerel or largemouth bass – and do not consume more than two red-eared sunfish from Crescent Lake.
- Lake Stone near Century FL – no more than two bluegill and sunfish per week and no more than one largemouth bass each week.
- From the Perdido River do not eat more than two bluegill or sunfish each week and do not eat largemouth bass from the Perdido River.
- The same species and regulations apply for the Yellow River system as well.
The following marine species are of concern….
Almaco jack, Atlantic spadefish, Atlantic croaker, Weakfish (trout), Black drum, Black grouper, Blackfin tuna, Bluefish, Cobia, Dolphin, Pompano, Gafftop catfish, Gag, Greater amberjack, Gulf flounder, Hardhead catfish, King mackerel, Ladyfish, Lane snapper, Bonito, Mutton snapper, Pigfish, Red grouper, Red snapper, Sand seatrout, Scamp, Shark, Sheepshead, Snowy grouper, Southern flounder, Southern kingfish, Spanish mackerel, Spot, Striped mullet, Vermillion snapper, Wahoo, White mullet, Yellow-edge grouper, and Yellowfin tuna.
In each case it is not recommended eating more than two servings a week. For a few, it is recommended that the most vulnerable people mentioned earlier not at ANY… Those would include Blackfin tuna, Cobia, King mackerel, Bonito, and Shark.
It is recommended that NO ONE eat king mackerel over 31 inches and any shark species over 43 inches in length.
I guess as you look at this list, you see fish species that you like. This list can lead folks to think… “I am just not going to eat seafood”. This would be a mistake. The Department of Health has found there are essential vitamins and nutrients provided be seafood that are missing if you do not eat them. They found additional problems in fetal development when seafood protein was left out of the mothers’ diet. So, the response would be… eat other seafood species you do not see on this list… or, if you see something you do like, no more than 1-2 6-ounce servings per week.
So, is there anything we can do about the mercury issue in our bay system?
Well, to have the biggest impact you will need to determine the biggest source. 33% of the mercury in our environment comes from natural sources, such as volcanic eruptions. We can do nothing about volcanic eruptions, or other natural sources, so we will need to look at anthropogenic (human) sources.
The larger sources would be anthropogenic, which account for 67% of the known mercury in the environment, focusing on these can make a large impact. Coming in at No.1 – producing electricity by burning coal. This accounts for 65% of the anthropogenic sources. Moving away from burning coal would make a huge difference. But that is easier said than done. Mining and burning coal are important for the economy of many communities. It is one of the cheaper methods of producing much needed electricity. But in addition to producing mercury compounds during the heating process, many other toxic compounds are produced and released as well – not to mention the amount of greenhouse gases produced during this process. Hence the name “dirty coal”. There are other methods of producing electricity and the solution would be to convert not only the power plants to these methods, but the coal dependent communities to this line of work. This one step would make a big difference.
Power plant on one of the panhandle estuaries.
Photo: Flickr
At a much smaller scale, mining for gold produces 11% of the mercury from the mine tailings, cement production (7%), and incinerating garbage (3%). Though not a large player in this game, reducing the amount of solid waste burned each year would help reduce the mercury issue.
The takeaway here is that the number of imperiled waterways in the Pensacola Bay System have been reduced over recent years and we will look at this in another article. But for those that remain, mercury is the prime reason. It is also important to understand that mercury is a naturally occurring element and can not be broken down, so we have what we have – but, we can stop adding to the problem. Third, eating some seafood each week is good for you. You will just need to select species that are not problems or watch how much you eat if you prefer some of the listed species.
For more information on the 2021 imperiled waterways list visit
https://floridadep.gov/dear/watershed-assessment-section/content/final-lists-impaired-waters-group-4-cycle-2-basins
For more on the seafood safety species lists visit
https://dchpexternalapps.doh.state.fl.us/fishadvisory/
Other sources for this article included:
Wikipedia – https://en.wikipedia.org/wiki/Mercury_(element)
Miller, G.T., Spoolman, S.E. 2011. Living in the Environment. Brooks and Cole Cengage Learning. Belmont CA. pp. 674.
by Rick O'Connor | Apr 29, 2022
I recently saw a news clip about a new Florida Fish and Wildlife Conservation (FWC) ruling for shrimpers. I was interested in this new ruling but also asked the question – “Where did all of the shrimpers go?”
What I mean by this is that when I was young there were shrimp boats on Pensacola Bay every evening. They seemed to trawl one side of the Pensacola Bay Bridge or the other, but you could see the lights on the decks of each trawler and there were many, looking like front porch lights of a small community, all over the bay. In the morning they would head towards the seawall along both sides of Palafox Street near the old Pensacola Municipal Auditorium and sell from the boats. We made frequent trips there.
Then the boats stopped coming to the docks…
And the Municipal Auditorium is now gone also…
Shrimping in the Gulf of Mexico.
Photo: NOAA
The focus turned to the docks near Joe Patti’s. Joe Patti’s, American, and Allen Williams Seafood companies were places we would frequent to purchase shrimp when they came in. Then those slowly disappeared with only Joe Patti’s remaining open to the public. The shrimp boats still come to the docks of Allen Williams, but in fewer numbers and the shrimp began to go through Joe Patti’s, Maria’s, Perdido and other seafood markets. Now the lights on the bay at night are few. Actually, I rarely see them anymore. Where did they go?
As you look at the commercial landings of shrimp since 1980 you see some interesting trends.
First, understand that commercial landings mean this is where the shrimpers “land” their catch, not where they caught it.
Second, that brown shrimp (bay shrimp) are BY FAR the most landed species in Escambia County. Comparing brown shrimp to white (also called Gulf shrimp), rock shrimp, and royal reds, there was a total of 13,372,791 lbs. of brown shrimp landed between 1984 and 2019. For the others white shrimp was 255,587 lbs., royal reds 95,920 lbs., and rock shrimp 78,817 lbs. You could also say the same for effort. Between 1984-2019 there were 31,935 trips for brown shrimp, 904 for white shrimp, 143 for rock shrimp, and only 19 for royal reds. So, brown shrimp are king for commercial landings here.
Third, there were 1000 or more trips per year for brown shrimp until 2002. That year it dropped to 835. In 2003 that was cut in half to 453 and the trend continued to decline. Between 2017-2019 there were less than 100 trips each year. There is a similar pattern for white shrimp. Prior to 2002 the number of trips for white shrimp were in the double digits, occasionally in the triple, each year. In 2002 it dropped from 38 to 7 per year and never recovered. Though royal reds and rock shrimp were never big players in local landings, between 2010 and 2019 there was only one trip for rock shrimp and no trips were logged for royal reds. What happened?
The famous Gulf Coast shrimp.
Photo: Mississippi State University
To try and find answers I reached out to a couple of my seafood contacts. Teresa and Bob Pitts are from the Perdido Key area and have been involved with commercial fishing most of their lives. Teresa currently manages Perdido Seafood and Bob works with the National Park Service but they both have strong ties to this industry. Jimbo Meador is a lifelong resident of Mobile Bay and has been involved in several industries including seafood over there. Jimbo recently retired from being nature tour operator in the Mobile Delta but still has ties to the seafood business and a wealth of knowledge. Dr. Andrew Ropicki is an economist with Florida Sea Grant and the University of Florida who focuses on seafood and other marine related topics. I had a conversation with all, and comments were made that helped connect some the dots.
In 1995 the state imposed a net ban on all entanglement nets 500 ft2 or larger from state waters. This obviously would have included Pensacola Bay. I know the shrimpers were opposed to this amendment. They were very visible and vocal about it. Once passed it would make sense they would move their operations from Pensacola Bay to Alabama, or federal waters offshore, so they could continue to use their standard sized otter trawls. Honestly, I do not remember which year the deck lights of the shrimp boats began to disappear, but I would guess many did leave when this law was passed. However, this did not impact the number of landings, they continued to bring shrimp here.
Otter trawl is correct name for what folks call a shrimp net. In 1995 any entanglement net over 500 square feet were banned in Florida waters.
Prior to 1995 landings of brown shrimp ranged from 1114 to 2523 a year with an average of 1760. Between 1995 and 2000 the range was from 1134 to 1816 with an average of 1442. A slight drop, but nothing significant. If they were shrimping somewhere else, they were still landing in Escambia County. I recently had a conversation about this with Bob Jackson, one of my citizen science volunteers. He moved here around 2000 and remembered shrimp boats still being on the bay at that time. Some may have moved due to the net ban, but not all. The shrimping was still on.
In 2002 the landings did take a significant drop – 835 landings that year. The first time they were below 1000/year since the records were kept in 1984. In 2003 they dropped further to 453 and the decline has continued ever since. Where were they landing their shrimp? Were they still shrimping? I do not know.
Jimbo asked the question “when did the surge of foreign imports begin?” Good question. We know now that at least 80% of the seafood consumed in Florida is imported. When did this move from local to import make this big swing? Dr. Ropicki found a world shrimp production graph that showed 2003 as a year with a big increase in aquaculture shrimp. Aquaculture accounted for 28% of global shrimp production in 2000 and 55% in 2010, and that is with wild caught shrimp increasing slightly. The big swing towards aquaculture in 2003 closely mirrors the decline in local wild harvest landings in 2002. This certainly could be a piece of the puzzle.
Seafood markets offer local products as well as those from around the world.
Photo: Florida Sea Grant
Did this competition with imports create less effort on the part of local shrimpers?
It certainly had some impact. All of my contacts indicated that the price difference between imported and local seafood made it much more difficult to do business. Add to this the rise in cost of fuel, insurance, and regulations to the industry, some captains did sell their boats and found another line of work.
Looking at the fuel story, Dr. Ropicki found a chart published by the U.S. Energy Information Administration. The chart shows how Gulf coast #2 diesel prices have changed since 1995. Basically from 1995 to 2021 they tripled (200% increase) while general inflation was only about a 75% increase. As many know it is a very fuel intensive industry.
In 2004 Hurricane Ivan hit our area and that certainly would have caused a decline in landings due to damage to boats and docks. The number of landings that year was 388. Between 2004 and 2010 landings steadily declined from 388 to 155/year. The days of 1000+ landings seemed to be over. Many shrimpers lost their boats during the storm and just found another line of work.
Hurricanes are one reason some shrimpers have left the business.
Photo: Rick O’Connor
To add fuel to the fire, in 2010 the Deepwater Horizon oil spill occurred. That year there were only 85 landings in Escambia County, the first year we had less than 100. But we understand why – no shrimping occurred with oil in the water. Many shrimpers still in the business were hired to help clean up the spill, and did make money doing it, but they were not landing shrimp.
The BP Oil Spill was one of the worst natural disasters in our country’s history.
Photo: Gulf Sea Grant
In 2011 landings returned to 187 for the year and even up to 235 in 2012, but since there has been again a steady decline. In 2017 we went below 100 landings again. Between 2017 and 2019 the landings in Escambia County were 66, 53, and 70 respectively – the lowest ever. FAR below the 1000-2000 landings in the 1980s and 1990s.
Further discussion with my contacts yielded another trend. Commercial fishing historically was a family venture. Families worked the boats and sons took over the business from their fathers. That seems to have stopped. One shrimper who did talk to me said at one point we had between 40-50 boats in our fleet, now there are 11 and their kids want nothing to do with the business. As one of the contacts mentioned “they would rather work with their brains than their backs”.
Commercial seafood in Pensacola has a long history.
Photo: Rick O’Connor
In Alabama many families actually lived on their boats and the entire family would go out when the shrimping was on. I was told they do not see this anymore. There are still some bay shrimpers who sell their catch along the Hwy 90 causeway crossing Mobile Bay, and they seem to be doing well, but there are fewer of them. I was also told that many of the Gulf shrimp boats in Alabama have been sitting idle at dock for several years, many are up for sale, and it has been primarily foreign businesses buying them. There were once 120 Gulf shrimp boats in the fleet at Bon Secour Seafood, now there is one. I recently heard a Pensacola shrimper who made port in Bayou Chico – just sold his boat this year.
Dr. Ropicki also shared data on price for shrimp. Could this play a role in this story?
Most commercial seafood products have seen an increase in purchase price at the dock, but not shrimp. Checking the state records for price/pound for brown shrimp in Escambia County found some interesting trends. Between 1985 and 2020 the average price paid for their harvest was between $1.50 and $2.00 a pound. At least once each decade the price went to $2.00 or more per pound – but only ONCE each decade. In that time the number of years where the price dropped BELOW $1.50 per year steadily increased. Between 1985-89 the price dropped below $1.50 only once. Between 1990-1999 it never dropped below. Between 2000-2009 it dropped below $1.50/lb. six times. This happened again between 2010-2019 – six times. In 2006 local shrimpers only got $1.01/pound for the work – the lowest in this data set. If you look at the average price a shrimper received for their brown shrimp harvest by decade you see…
1985-89 – $1.82
1990-1999 – $1.78
2000-2009 – $1.58
2010-2019 – $1.54
A steady decline over time. Along with storms, regulations, fuel costs, lack of labor, and competition with imports, you can add price to the “soup of problems”.
I was curious if a similar scenario was playing out in Apalachicola. Apalach is known for their oysters, but there is a sizable shrimping industry there as well – it’s a seafood town. I asked our Sea Grant Agent over there, Erik Lovestrand, about similar trends. He did not have any data but was reasonably certain that the number of boats working out of their docks had significantly declined over the years.
Known for their oysters, Apalachicola is also a shrimping town.
I decided to take a look at the landing numbers for Apalachicola. I looked at brown shrimp.
Between 1985-1989 they averaged 909 landings – less effort for this species than in Escambia County.
Between 1990-1999 there averaged 1546 landings a year.
Between 2000-2009 the average was 382.
And between 2010-2020 it was 68.
The pattern looks similar albeit the number of landings was brown shrimp were less in Apalachicola. However, I did see another interesting difference – price paid per pound. In Escambia over this time the average price was $1.66/pound. It only went to $2.00/pound once decade and began to drop below $1.50 frequently over the last 20 years. However, in Apalachicola the average price was $2.00 rarely going below that and even reached $3.32/pound in 2014. They pay more for brown shrimp in Apalach. I am not sure if that impacted landings locally. The data suggests that it did not, but it is interesting.
And then, another thought came to mind. From the Big Bend of Florida south to Key West pink shrimp, not browns, are the target species. What did the pink shrimp landings look like? Did Escambia make a switch?
The results were interesting. Between 1985-2021 the landings of pink shrimp in Apalachicola occurred every year. The total number of landings was 6431 and averaged 174/year. The price was good, ranging from $1.80 to $3.23/pound, the average price was $2.39. The number of trips per year never broke 500 and the trend on landings shows a decline over this time period. But the price was decent for those who chose to target this shrimp.
In Escambia County the effort was low. They did not continuously land pink shrimp each year, but rather over short periods. Landings occurred between 1986-1991. Then nothing until 1997. Then another short period from 2000-2003. Then nothing again until 2014, which ran until 2020. Other than in 2000, the number of trips for pink shrimp were less than 10 a year (they were 10 in 2000). The average number of trips since 1986 was 4/year – less than Apalachicola and much less that the brown shrimp harvest here.
However, the price per pound was much higher for pink shrimp in Escambia. It ran from $1.59 to $5.00/pound! The average price was $2.77 (more than what they were paying in Apalachicola). Though Escambia landings were not big for pink shrimp, it was certainly more profitable than brown shrimp.
Pink shrimp are very popular.
All of the above played play a role in the decline of the local shrimping industry. However, if you visit a local seafood market you will find shrimp. Some is still local, local landings may be down, but they have not stopped. Some are local in the since they were harvested elsewhere in the Gulf of Mexico and trucked to us. But as we mentioned, cheaper imports are easier to get. So, it does not seem we are going to run out of shrimp, just out of shrimpers. For some it is unnerving that we will be dependent on other countries for our seafood, but we will have seafood.
Which brings up the topic of aquaculture. This is for another article. Until then, we do encourage you to enjoy seafood, it is a healthy source of protein. We will see where the local industry heads in the next decade, but you can still get shrimp, and I have seen nice looking ones in there. Enjoy them.
A rare site – a shrimping landing its catch in Pensacola Bay in 2022.
Note: After completing this article I had a meeting in Bayou LaBatre AL. I was told that shrimping industry there was hanging on… barely. Also, the high school teacher I met with said he was not aware of one kid in the school who planned to become a shrimper… this is in Bayou LaBatre Alabama.
Special thanks to
Bob and Teresa Pitts – Perdido Bay Seafood
Jimbo Meador
Dr. Andrew Ropicki – University of Florida / Florida Sea Grant
Erik Lovestrand – UF IFAS Extension / Florida Sea Grant / Franklin County
Bob Jackson
by Rick O'Connor | Apr 21, 2022
This began with a call from one of my volunteers who was checking salinity at Shoreline Park. She reported the salinity, but also reported to smell of dead fish – though she could not see them. I visited Shoreline Park the following day on another project and could smell it as well. There was a large amount of dead seagrass washed ashore from a recent storm and I thought this may be the cause of the smell because I did not see the dead fish either.
When I got home, I checked the FWC fish kill database. It reported a redfish kill in Pensacola Bay. It is unusual to see a kill of only one species. Many times, these are releases from fishing activity, particularly bait, and thought this must be the case – FWC did not mention the cause. I let the volunteer know and asked to keep an eye out.
I reported this to the Escambia County Division of Marine Resources to (a) let them know, and (b) to find out if they had any idea of cause. They replied that the location was incorrect. The kill was actually near Galvez Landing on Innerarity Point. He (Robert Turpin) had visited the site and did find any dead fish. I have a lot of volunteers over that way so asked each to take a look. They did not see any dead fish. I asked them to keep an eye out and collect a dead fish if they saw one for testing. Often when a large fish kill occurs, and it is only one species, the suspect cause is disease. Tissue samples could confirm this.
And then came another call.
This time it was from one of our Master Naturalist who lives on the eastern shore of Mobile Bay. He wanted to know what was up with all of the dead redfish along the shore of the bay. He sent photos and his beach was littered with them. I reached out to Mississippi/Alabama Sea Grant to see if they knew what was going on. They had heard about the situation and knew the Alabama Department of Natural Resources was collecting samples. The Gulf Islands National Seashore then reported large numbers of dead redfish along the National Shores property in Mississippi, something was up.
Dead redfish on the eastern shore of Mobile Bay.
Photo: Jimbo Meador
I eventually got word from Dr. Marcus Drymon at the Dauphin Island Sea Lab. They had a team working on this. Their team reported that stratification of the Gulf had created a hypoxic (low dissolved oxygen) layer on the bottom and the male “bull redfish” had gathered for breeding and died.
So, we are back to our title – what is stratification and how did this cause the fish kill?
Stratification is the layering of the water. Less dense water will sit atop the more dense. Water temperature or salinity can cause this density difference and layering. Colder and/or saltier water is denser and will form the bottom layer. If you have high winds, it will mix the water and the stratification disappears. Tides and currents can affect this as well.
What they believe happened recently was excessive amounts of rainfall created a large layer of freshwater to move from Mobile Bay into the open Gulf. The combination of tides and wind allowed a stratified layer to form. The oxygen that marine life uses is dissolved into the water at the surface and referred to as dissolved oxygen (DO). If the system is stratified, then the oxygen dissolved at the surface will not reach the bottom and hypoxia (low DO) can happen. They this is what happen. It just so happens that the large male redfish (bull reds) had congregated just offshore for breeding. They are more sensitive to low DO than the smaller females and any juveniles. So, the males died. To answer the question as to why other fish did not die (what you typically see in a DO related fish kill) – the numbers were not mentioned by there was one reference to 4.0 ppm. This is the high threshold of hypoxia. Many fish can tolerate at this concentration, but the male redfish could not.
So, that is what we think happened. The perfect storm of the demise of a group of male redfish just off of Mobile, and the carcasses drifted to other locations.
by Rick O'Connor | Apr 21, 2022
It is now spring, and wildlife is beginning to stir more. However, on this April day another cold front had just past the area and the morning temperature was 59°F. To add to this, there was a strong west wind that made it feel colder. Despite the fact it was an early spring morning in Florida, I had my fleece on and was dubious that I would see any reptiles.
This month’s hike was out at Big Sabine near Park East. The Gulf of Mexico was churning like a washing machine due to the passing front and the beach had a sharp scarp to it. There were a few plovers out trying to probe the sand for food, but not much else. Usually after hard winds you will find an assortment of things washed up on the beach but there was little really, possibly removed by the storm. There were however signs of digging by humans. It is now sea turtle nesting season, and we remind folks that these large holes can be a real problem for the mothers trying to nest. Please fill them in before you leave the beach.
Diopatra are segmented worms similar to earthworms who build tubes to live in. These tubes are often found washed up on the beach.
Large holes like this can be problematic for many island wildlife species – like nesting sea turtles. Please fill them in when you leave for the day.
“Blow outs” are formed by people walking over the dunes. They will increase the erosion of these dunes and enhance flooding during storms. Please cross over on boardwalks.
The Gulf of Mexico was churned up due to the passing cold front.
Beach scarps are formed during heavy surf changing the dynamics of the beach for creatures living there.
“Sea Beans” are seeds of tropical plants that wash ashore this time of year. Most do not germinate and those that do are usually on a high energy beach and do not survive.
As you head north into the dune fields the wind typically slows, but this morning it was blowing plenty hard, and I was getting “sand blasted” at some points. Not the best day to find wildlife. The sun was out and I decided to check the leeward side of shrubs and bushes, but had no luck.
One thing I did find was the sandhill milkweed in bloom. This plant is host to the monarch butterfly caterpillars and produces a mildly toxic “milk” which the caterpillars accumulate making them toxic to birds. This toxin is carried on to the adult butterfly stage and many birds learn to avoid butterflies with the monarch coloration because of the bad taste. Though I saw lots of milkweed, it was too windy for the butterflies.
The blooms of the false rosemary, which appear in late winter, had all fallen but it was obvious that the pine trees had release their pollen. Most of the scrubby pines in the dunes had new growth on them.
There were several ephemeral ponds scattered amongst the dunes. All had water in them from the recent rains and I was hoping to maybe find a basking snake or singing frog. No luck on either. There were damp areas where water had recently been, and the carnivorous sundews and spore producing club moss, known as ground pines, were doing very well.
The path used by wildlife to reach the ponds of the dune field.
Two invasive Chinese tallow trees were found growing in the dune field. These will be removed.
Devil’s Joint is a common cactus in the dunes. Wear shoes when exploring!
The high winds of the beach can form some interesting dunes. This one resembles the mesa’s of the American southwest.
There are numerous freshwater ponds in the low areas of the dune field. Many of them are ephemeral.
Freshwater ephemeral pond.
Ground pine is a type of club moss found in the wet-damp areas of the dunes.
The sandhill milkweed is bloom this time of year.
Pine scrub areas like this are found in the dune fields and are great places to find snakes and lizards.
Since some of our snakes are venomous, it is recommended you wear good boots and have a hiking stick to move logs and high grass before stepping in or over.
Seaside rosemary produces a wonderful smell that reminds many of the beach.
As I moved from the dunes into the maritime forest, I was expecting to see birds. I did, but not many. Most were small woodland birds I could not identify, and there was an osprey flying over briefly, but for the most part the bird action was slow today – again, probably due to the high winds. I was again hoping to maybe find a basking snake on the sunny leeward side of a bush or fallen tree but had none. I did find a common parasitic plant that was becoming more common this time of year. It is called “love-vine” or dodder. This yellow-colored string looking vine lacks chlorophyll and wraps around host plants to remove much needed nutrients. It begins to appear this time of year and is not restricted to the beaches. I have seen it 10 miles inland.
One thing that was very evident in the maritime forest was sign of armadillos. Their tracks and digs were found everywhere. I did locate a few burrows and found even more along the beach of the Sound. These animals are very abundant on this island I am curious as to what predators they have and how their populations are controlled. They can be found day or night and dig frequently looking for grubs and other invertebrates to eat. Whether they seek out turtle or bird eggs I do not know. More on this guy next month.
I will add that I did see tracks of raccoons who do eat turtle eggs and also what I think was a “slide” of an otter. The number of otter encounters has increased in recent years. Individuals have been seen not only on the beach but around Bayou Texar and Project Greenshores. These are very elusive animals and produce a high pitched “chirp” or “bark” when approached. I have seen them near Ft. Pickens on a couple of occasions in the ponds. There are the old hatchery ponds at Big Sabine, and it was there that I found the “slide”. These slides are used by the otters to slide into the water. I have seen video of them exiting the water, sliding back in, only to repeat this as if they were playing like kids – and I think that is what they are doing… playing. Otters are the largest members of the weasel family, mustelids, and pretty cool.
Many creatures use the same trails we do. This is a good place to look for tracks.
Armadillos are all over the island. This is a burrow of one.
The digging of armadillos can be found everywhere as well.
Dodder (or “love vine”) is a parasitic plant that begins to appear this time of year.
This is what I think to be an otter slide. Though I could not find tracks to confirm, I have seen them build and use these before.
Raccoons are common all over the island.
The marsh of Big Sabine was pretty quiet on this windy day. I did see two Canadian geese walking along the shore. I recently saw several nesting on an island in Okaloosa County and was told they were now year-round residents. I am not sure whether these were residents to Big Sabine or not, I had not seen them before, but will note this as this series continues this year.
Canadian geese are becoming residents on some islands along the panhandle.
Wood piles like these can be good habitat for some beach wildlife.
The beach of Santa Rosa Sound was quiet as well. Again, I probed around to seeking a basking snake, a nesting terrapin, or maybe a nesting horseshoe crab (it was a spring tide day) but found nothing. There are piles of wood gathered by locals cleaning the beach and these actually make good habitat for some wildlife. I poked around in them but did not find anyone today. This was also where I found most of the armadillo burrows. Why they preferred this over the forested areas I am not sure. There may be many more in the forest that I just did not see. The spring tide was rising and much of the beach was exposed but I saw no fiddler crabs or other creatures and there was nothing swimming nearshore in the grass beds. Again, the lower temperatures and high winds I am sure had everyone in a warmer calmer place.
Despite little wildlife today it was a great walk and despite the high winds, the weather was actually nice. It is spring and nesting should be going on across the island. We will visit Ft. Pickens in May and see what is going on then.
Santa Rosa Sound.
by Rick O'Connor | Apr 15, 2022
GUEST AUTHOR: PRUDENCE CASKEY – 4-H Agent in Santa Rosa County
The hot, Florida summer is approaching, and we all need to make sure we focus on hydration in the heat. Dehydration is very common in hot, humid environments. Many people do not drink the recommended amount of water. Many of us have our coffee in the morning and unless we go out to lunch and someone gives us water, we seldom think about water during the day. Another confusing concept is how much water we should drink. Growing up we were told to get eight glasses of water a day. That is 64 ounces. Let’s see if that adage still holds true today.
Animals are well aware of the need for water.
Photo: Prudence Caskey
How much water should I drink?
The best way to calculate how many ounces of water to drink is to multiply your weight by .67 or 67%. For example, a person weighing 150 pounds would need 100½ ounces or a little over 12½ cups. On the other hand, a person weighing 200 pounds would need 134 ounces or 16¾ cups.
Is that all the water I need?
No, as you sweat, you lose the water that you have already consumed. If you are sweating for 30 minutes, you need to replenish your hydration with 12 additional ounces of fluid.
What fluid should I drink?
The main thing when it comes to hydration, is to remember, just because it is wet, does not mean you are being hydrated. Different fluids are absorbed by our bodies differently. Some alcoholic beverages remove hydration from our bodies as we drink them. Below is an example of how our bodies absorb some common beverages:
- Water absorbed at 100%
- Sparkling Water absorbed at 100%
- Skim Milk is absorbed at 90%
- Buttermilk is absorbed at 90%
- Whole Milk is absorbed at 80%
- Apple Juice is absorbed at 88%
- Decaffeinated Coffee is absorbed at 90%
- Coffee is absorbed at 80%
- Sports Drinks absorbed at 50%
- Energy Drink absorbed at 40%
- Wine is absorbed at negative 150%
- Beer is absorbed at negative 60%
- Sake is absorbed at negative 180%
- Liquor is absorbed at negative 300%
This is a huge concept to grasp, if you plan on being out at the beach with your friends this summer. With this example, a well-hydrated 150-pound person consumes the required 100½ ounces of fluid. Then at a gathering, they have three, glasses of wine. The standard five ounces per glass would mean they have removed 22½ ounces from their hydration after drinking only 15 ounces of wine. Be cognoscente of what you add to your coolers this year.
What are the signs of dehydration?
There are many signs our bodies will give us to signal dehydration. Headache, nausea, and muscle pains are common. However, the most common sign of dehydration is thirst. That’s right, if you are thirsty, it is your body’s way of letting you know you need fluids. Just be careful which fluids you chose this summer when you are out and enjoying the Florida sun.
Learn more at: https://edis.ifas.ufl.edu/publication/FY1409
