Though this is titled late winter, it did not feel like winter on this walk. The air temperature was 75°F. There was a blanket of fog over the beach, and it felt slightly humid and sticky, but with a cooler feel than we have in summer. It is true that Punxsutawney Phil did not see his shadow this year – signaling an early spring, and the weather today supported this, but spring does not officially begin until the equinox on March 21. So, this is a late winter walk.
This walk was near Big Sabine on Pensacola Beach. As I crossed the road at Park East and headed into the dunes there was a breeze from the south creating surf that could be heard across the island. The fog made things damp and chilled. And there was no sign of wildlife anywhere. The numerous songbirds I had encountered during early and mid-winter were gone. There were flowers in bloom but no insects pollinating them. Literally no wildlife was to be seen.
A foggy day on Pensacola Beach.
Photo: Rick O’Connor
So, I turned my focus to the environment, noticing plants and the stages they were in. As you move from the primary dunes of the Gulf side into the more shrub covered secondary dunes, you cross through low areas in the dune field called swales. Here water collects during rain events forming ephemeral ponds and the plants associated with this habitat are more wetland than upland. In the boggy portions of the swale, I found sundews large and in a brilliant red color. These carnivorous plants produce tiny droplets of sugar water on threads at the tips of their leaves that attract the pollinators of the beach. Though sweet and delicious, they are also sticky and trap unaware insects which become a meal for them. Along with the sundew were numerous strands of ground pine, another carnivorous plant of the swale.
Swales are low areas of the dune field where water stands for periods of time and the more wetland plants can exist.
Photo: Rick O’ConnorThe carnivorous sundew inhabits more wetland locations.
Photo: Rick O’Connor
Beyond the swale, the secondary dunes were a blanket of lavender. The false rosemary, also called beach heather (Conradina), was in full bloom everywhere. As I walked through the dunes of flowers I came across the signs of wildlife. Armadillo dens were quite common. There were tracks of animals, including the raccoon, and scat was found. The scat contained seeds and, unlike the long-tapered shape of most carnivore scat, was blunt and rectangular shaped – suggesting a herbivore or omnivore. I did encounter a couple of ephemeral ponds with very little water, but there were no animals, or animal sign, to be found there.
The false rosemary was in bloom and the dunes were full of this lavender color.
Photo: Rick O’ConnorArmadillo burrows like this one can be found all over our barrier islands.
Photo: Rick O’ConnorThe blunt ended and rectangular shape of this scat suggests it was from a herbivore or omnivore. It was full of seeds.
Photo: Rick O’Connor
As you move from the secondary dunes into the maritime forest you pick up a section of the Florida Trail. This 1,500-mile trail begins at Ft. Pickens on the western end of Santa Rosa Island and ends near the Everglades. It was obvious that many of the animals who live in these dunes use this trail as well, there were numerous tracks covering it. Over the ridge into the maritime forest, you encounter marshes. The plants you find growing there help indicate whether the marsh is fresh or salt water. Pausing here to see if something stirred or moved, I saw and heard nothing and continued on.
The orange blaze indicates this is part of the Florida Trail.
Photo: Rick O’Connor
The maritime forest was full of healthy pine and oak trees, creating a completely different habitat for the wildlife out here. You get the feeling when you enter the forest that this is where the creatures prefer to be. Raccoons, skunks, coyote, snakes, birds, lizards, exist here and I was hoping to find something. And then it happened. Glancing up into one of the pine trees I saw a great horned owl – bingo! These are amazing birds and there have been a few reports of nesting great horned owls around the area. I did not see the nest but was happy to see the owl.
The maritime forests of our barrier islands is a completely different environment than the open dune fields.
Photo: Rick O’ConnorUsing the nests of other raptors, great horned owls raise their young this time of year. This one is in the “extended” position suggesting it is alarmed.
Photo: Rick O’Connor
I eventually reached the shore of Santa Rosa Sound and walked along for half a mile or so. I did see a great blue heron in the marsh, and some wharf crabs under a plank of wood – but there was nothing visible in the clear water of the Sound. There was evidence of armadillos digging. One section of the beach they had basically destroyed digging for grubs and other invertebrates to eat.
All in all, it was a quiet day. I am guessing that the foggy conditions moved the animals into their hiding places waiting for the sun to come out. Our next walk will be in early spring, and we are hoping to see more wildlife.
You should get out and take a hike on our beaches, there are plenty of cool things to see and it’s great for your mind.
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’ConnorThe 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.
Miami is ground zero for invasive species in this state. But the Florida panhandle is no stranger to them. Where they are dealing with Burmese pythons, melaleuca, and who knows how many different species of lizards – we deal with Chinese tallow, Japanese climbing fern, and lionfish. The state spends hundreds of thousands of dollars each year battling and managing these non-native problem species. By definition, invasive species cause environmental and/or economic problems, and those problems will only get worse if we do not spend the money to manage them. Those who work in invasive science and resource management know that the most effective way to manage these species is to detect them early and respond rapidly.
The Invasive Species Curve
Invasive species have made their way to the coastal waters and dunes of the barrier islands in the Florida panhandle. Beach vitex, Brown anoles, and Chinese tallow are found on most. Recently on Perdido Key near Pensacola, we found a new one – cogongrass.
Cogongrass (Imperata cylindrica) was accidentally introduced to the Gulf coast via crates of satsumas entering the port of Mobile in 1912. It began to spread from there and has covered much of the upland areas of the southeastern U.S. It has created large problems within pasture lands, where livestock will not graze on it, and in pine forest where it has decreased plant and animal biodiversity as well as made prescribed burning a problem – it burns hot, hot enough to actually kill the trees. The impacts and management of this plant in that part of the panhandle has been known for a long time. The Department of Agriculture lists it as one of the most invasive and noxious weeds in the country.
Cogongrass seedheads are easily spotted in spring.
Photo credit: Mark Mauldin
Two years ago cogongrass was discovered growing around a swimming pool area at a condo on Perdido Key. To be considered an invasive species you must (a) be non-native to the area – cogongrass is certainly non-native to our barrier islands, (b) have been introduced by humans (accidentally or intentionally) – strike two, we THINK it was introduced by mowers. This is a common method of spreading cogongrass, mowing an area where it exists, then moving those mowers to new locations without cleaning the equipment. We do not know this is how it got to the island, but the probability is high. Third, it has to be causing an environmental and/or economic problem. It certainly is north of the I-10, but it is not known what issue it may cause on our barrier islands. Could it negatively impact protected beach mice and nesting sea turtle habitat? Could alter the integrity of dunes to reduce their ability to hold sand and protect properties. Could it overtake dune plants lowering both plant and animal diversity thus altering the ecology of the barrier island itself? We do not know. What we do know is that if we want to eradicate it, we need to detect it early and respond rapidly.
According to EDDMapS.org – there are 75 records of cogongrass on the barrier islands, and coastal beaches of the Florida panhandle. This is most likely under reported. So, step one would be to conduct surveys along your islands and beaches. Florida Sea Grant and Escambia County of Marine Resources are doing just that. EDDMaps reports five records on Perdido Key and four at Ft. Pickens. It most likely there is more. A survey of the northeast area of Pensacola Beach (from Casino Beach east and north of Via De Luna Drive) has found two verified records and two unverified (they are on private property, and we cannot approach to verify). Surveys of both islands continue.
The best time to remove/treat cogongrass is in the fall. The key to controlling this plant is destroying the extensive rhizome system. In the upland regions, simple disking has been shown to be effective if you dig during the dry season, when the rhizomes can dry out, and if you disk deep enough to get all of the rhizomes. Though the rhizomes can be found as deep as four feet, most are within six inches and at least a six-inch disking is recommended. Depending on the property, this may not be an option on our barrier islands. But if you have a small patch in your yard, you might be able to dig much of it up.
Chemical treatments have had some success. Prometon (Pramitol), tebuthurion (Spike), and imazapyr have all had some success along roadsides and in ditches north of I-10. However, the strength of these chemicals will impede new growth, or plantings of new plants, for up to six months. There are plants that are protected on our islands and on Perdido Key any altering of beach mouse habitat is illegal. We certainly do not want to kill plants that are holding our dunes. If you feel chemical treatment may be needed for your property, contact the county extension office for advice.
Most recommend a mixture of burning, disking, and chemical treatment. But again, this is not realistic for barrier islands. Any mechanical removal should be conducted in the summer to remove thatch and all older and dead cogongrass. As new shoots emerge in late summer and early fall herbicides can then be used to kill the young plants. Studies and practice have found complete eradication is difficult. It is also recommended not to attempt any management while in seed (in spring). Tractors, mowers, etc. can collect the seeds and, when the mowers are moved to new locations, spread the problem. If all mowing/disking equipment can be cleaned after treatment – this is highly recommended.
Step one would be to determine if you have cogongrass on your property, then seek advice on how to best manage it. For more information on this species, contact your local extension office.
“I can’t do what? – because of a mouse? – it’s only a mouse.”
This was a comment made by many who lived on Perdido Key when a small beach mouse found only there was added to the endangered species list. It is a comment heard often when many species are listed. A major reason most species begin to decline and become endangered is loss of habitat. We enter and change the habitat to suit our needs. Much of this includes construction of buildings and altering landscapes to a more artificial setting and much of the local wildlife is lost. So is the case with this little mouse.
The Choctawhatchee Beach Mouse is one of four Florida Panhandle Species classified as endangered or threatened. Beach mice provide important ecological roles promoting the health of our coastal dunes and beaches. Photo provided by Jeff Tabbert
The Perdido Key beach mouse (Peromyscus polionotus trissyllepsis) is one of seven subspecies of beach mice found in Florida, five of those found in the Florida panhandle. Beach mice are a subspecies of the Old-Field mouse (Peromyscus polionotus). They are small, about 5 inches long, with tails that have hair (which are an additional 2 inches). Beach mice typically have a brown/gray color on top and a lighter white underbelly allowing them to blend into their environment very well. The difference between the subspecies is the extent of the coloration.
The subspecies status, and genetic isolation, is part of the reason these mice are listed. Members of a population who are genetically isolated from others can undergo a process called speciation where the genetic changes that occur in one isolated group cannot/do not flow through the gene pool of the other isolated group. Over time, the genetics, and morphology, of one isolated group becomes different enough that a new subspecies, or even species, develops. This is the case with the Perdido Key beach mouse. It is isolated on Perdido Key, a barrier island, and does not interbreed with their closest neighbors – the Alabama beach mouse (P.p. ammobates) and the Santa Rosa beach mouse (P.p. leucocephalus). Because of this, ALL of the Perdido Key beach mice in the world live on Perdido Key. Their population is small and vulnerable.
These mice are dune dwellers living in small burrows. They prefer the primary dunes (closest to the Gulf) which are dominated by the grasses whose seeds they like to feed on. They forage at night (nocturnal) feeding on the seeds of the sea oat (Uniola paniculate), panic grass (Panicum amarum), and blue stem (Schizachrium maritimum) usually in the secondary dunes. Highly vegetated swales (low wet areas between the primary and secondary dunes) are used to move between these habitats, and they are also found in the tertiary dunes (on the backside of the island where trees can be found) where their burrows are more protected from storm surge during hurricanes. During periods when seeds are not available, beach mice will turn to small invertebrates to support their diet. Their foraging range averages around 50,000 ft2.
Breeding takes place in the winter, though can occur anytime of year if enough food is available. They are monogamous (males pairing with only one female for life) with the females giving birth after 23 days to four pups. New members of the family can move up to half a mile in search of a foraging range for themselves. It is understood that with limited available habitat on an isolated island, the carry capacity of the beach mouse would be low. Owls and snakes are some of the predators they face, but the beach mice have evolved to deal with few predator issues.
The increase of humans onto the barrier islands has negatively impacted them. The leveling of dunes for houses, condos, swimming pools, and shopping centers has significantly reduced suitable habitat for them as well as reduced the seed food source. Introduced feral and free roaming domestic cats have also been a large problem. Bridges connecting these islands to the mainland have allowed foxes and coyotes to reach, and increase pressure on, them. With these increased pressures, and small populations, these mice are now listed under the Endangered Species Act.
Conservation measures have included, predator control, building and landscaping restrictions, translocation (moving mice from large populations to those that are smaller), and reintroduction (releasing mice into areas where they once existed but no longer do). There has been success with the Choctawhatchee beach mouse in the Grayton Beach area, as well as the Perdido Key beach mouse in Gulf Islands National Seashore. Things that beach residents can do to help beach mice populations include keeping your pets inside at night, plant native grasses in your landscape, reduce night lighting, do not walk over dunes – use the cross walks.
Things seem to be improving for beach mice, but the development pressure is still there. Hopefully we will have these creatures as part of our panhandle barrier island communities for many years to come.
References
Beach Mouse Fun Facts. Gulf Islands National Seashore. U.S. Department of Interior.
For better or worse, tropical storms are exciting. Besides the energy and tension around the mystery of where a storm will make landfall, the combination of powerful waves coming ashore, intense wind gusts, and driving rain really heighten all the senses. Most long-time Floridians don’t flinch too much at a Category 1 or 2 hurricane. But once we cross the threshold of a Category 3+, things change. If you have lived through a storm like Frederic, Ivan, or Michael, you know the damage and heartache these stronger storms can bring. Even Category 2 storms like Hurricane Sally just three years ago had serious lasting impacts, particularly affecting the under-construction Pensacola Bay Bridge.
An example of damage to local marinas and fishing vessels after Hurricane Michael in 2020. (Photo by Allen Golden).
Post-covid, with the economy (sort of) back in full swing, we are averaging just over 1,200 people a day moving to Florida. From July 2021-July 2022, nearly half a million people arrived, compared to 185,000 in the same timeframe the previous year. While some of these new residents may come from storm-prone locales, many have zero experience with hurricane season on the Gulf. If you are among those new to hurricanes, or know neighbors who could benefit from information, please share these tips with them.
Tip 1: Have the right insurance. The vast majority of insurance companies will not issue new policies when there’s a storm in the Gulf. Officially, hurricane season begins June 1. So, if you don’t have enough coverage for your investments, you should go RIGHT NOW and look into it, before the storm season really heats up in late summer. In addition, different types of policies cover different types of damage. Homeowners’ insurance (fire, theft, etc.) in Florida requires a separate windstorm policy, which includes damage from hurricanes and high winds (always confirm by reading your policy). And these are both separate from flood insurance. Performing certain types of windstorm mitigation, such as wind-rated garages, strong roof to wall connections, and obtaining shutters, can significantly reduce your overall costs for windstorm insurance.
Flood insurance is available through the National Flood Insurance Program (NFIP) and can be reasonably priced for people living outside of a flood zone. Those within designated flood zones will be required to purchase it, and rates vary widely depending on location and any prior flood impacts.
This property experienced significant flooding during a tropical storm a few years ago. Photo credit: Carrie Stevenson, UF IFAS Extension
As for which policy pays for storm impacts, it will become a game of “whodunit” afterwards, with adjustors making determinations of your damage based on the specific characteristics of each storm. These may include the direction of the incoming storm, the windspeed, amount of rain, and where any water damage actually originates from.
Tip 2. Create a disaster kit. Whether you are hunkering down and riding out the storm or getting out of the fray, it’s important to have a disaster kit with certain necessities. I always recommend a waterproof tote bin, to protect important documents from rain or floodwater. Items for a kit include medication, flashlights and batteries, shelf-stable food that can be eaten without heating or refrigeration, gallons of water, pet food, cash (since ATMs won’t work), portable phone chargers, a list of emergency contacts, and insurance paperwork. Comprehensive disaster kit lists can be found at floridadisaster.org. Another benefit of keeping these materials in a portable container is that if you do have to leave your home in a hurry, everything is in one place.
Tip 3. Come up with an evacuation plan. Talk with your immediate and distant family about your plans for a storm. If you plan to evacuate, look at the direction of an incoming storm and find a place to stay that is out of the immediate cone of impact. Sometimes this means moving east or west along the coast; other times it’s best to head inland. It’s important to let others know you’re leaving, in case there are serious impacts to your home from flooding or wind and rescuers are in the neighborhood.
Tip 4. Pay attention to news about predicted storm surge—flooding is the deadliest factor of a hurricane. By using the Florida Division of Emergency Management website to “Know your zone,” you can look up your address to determine whether you are in a potential evacuation zone when a storm comes through.
Evacuation Zones in Florida are color-coded based on risk. Image from floridadisaster.orgA view of the evacuation zones for portions of southern Escambia and Santa Rosa Counties. Image from floridadisaster.org
During the spring and early summer beach vitex is not in seed and this is a good time to remove this invasive plant from your property. This time of year, the leaves have their unique blueish-green coloration, allowing them to stand out from other plants on your lawn, and soon will also have their lavender flowers. It will appear as a series of vines running across the surface of the sand extending from a central taproot.
Beach vitex expands it’s woody rhizomes aggressively; it can actually grow over sidewalks.
Photo: Rick O’Connor
To remove it you begin at the end of the vine away from this central point and slowly, carefully pull it from the sand, cutting it into two-foot sections to make it easier to bag. The vine may have smaller secondary roots extending from it that you have to carefully remove as well. If you are lucky, and the plant is relatively small, you may be able to pull all of the vines and the taproot with no tools. But if the plant is more established, the texture of the vine may become more woody and you will need to use loppers (or clippers) to remove it. The same is the case with the taproot, you may have to use a shovel to get it completely out. If you cannot remove all of the taproot, you may have to spray the remaining section with an herbicide. All cuttings should be double bagged before disposing to reduce the chance of spreading by fragmentation.
Beach vitex (Vitex rotundifolia) was brought to the United States from Asia in the 1950s as an ornamental plant. In the 1980s the states of North and South Carolina used in dune restoration where it exposed its invasiveness. The plant quickly spread, killing off native vegetation, such as sea oats, and forming dense monocultures on the dune. As the plant matures it becomes more of a woody shrub and much more difficult to remove. The shrub blocks sunlight not allowing the germination of other plants and the vines can extended onto the beach impacting sea turtle nesting. We are not sure at this time how it may impact the beach mice found in Florida.
We are not sure when it was first introduced to Pensacola Beach, but it was first found in 2014. Since then, Florida Sea Grant has been able to identify 2 sites in Gulf Breeze, 1 at Ft. Pickens, 24 in Naval Live Oaks, and 57 sites on Pensacola Beach where the plant exists (or did exist). One Pensacola Beach, 54 of the 57 sites are east of Casino Beach. 22 of the 57 sites are on public lands, and with permission from the Santa Rosa Island Authority, Florida Sea Grant uses local volunteers to manage those. However, 35 are on private property and we hope those homeowners will take the initiative to remove the plant to help stop its spread.
If you have questions on identification or methods of management, contact Rick O’Connor at the Escambia County Extension Office – roc1@ufl.edu, (850-475-5230 ext.1111).
