by Rick O'Connor | Jan 31, 2019
As we begin our wildlife series for 2019, we will start with a snake that almost everyone has encountered but knows little about – the southern black racer.
The southern black racer differs from other black snakes in its brilliant white chin and thin sleek body.
Photo: Jacqui Berger.
This snake is common for many reasons.
- It is found throughout the eastern United States
- It is diurnal, meaning active during daylight hours when we are out and about
- It can be found in a variety of habitats and is particularly fond of “edge” areas between forest and open habitat – they do very well around humans.
The southern black racer (Coluber constrictor priapus) is one of eight subspecies of this snake found in the United States. This local variety is a beautiful shiny black. The shine is due to the fact that they have smooth, rather than keeled, scales. It is a long snake, reaching up to six feet, but very thin – and very fast! Most of us see it just before it darts away.
They are sometimes confused with the cottonmouth. It can be distinguished in having a long “thin” body, as compared to the cottonmouths shorter “thick” body. It has a brilliant white chin and the top of the head is solid black. Cottonmouths can be mottled, usually have a cream-colored chin with a dark “mask” extending from the lower point of the chin through the eye. Cottonmouths also have the wide delta shaped head compared the finger-shaped head of the racer. They are also confused with the eastern indigo snake. The indigo is very long (up to eight feet) large bodied snake, and the lower chin is a reddish-orange color. The coachwhip is a close cousin of the racer, found in many of the same habitats. It has a similar body shape, and speed, but is a light tan color with a dark brown-black head and neck.
The juvenile black racer looks more like a corn snake, and is sometimes confused with a pygmy rattler.
Photo: C. Kelly
The juvenile looks nothing like the adult. The young racers hatch from rough covered eggs laid in late winter and early spring. They typically lay between 6-20 eggs and hide them under rocks, boards, bark, and even in openings in the side of homes. In late spring and early summer, they hatch. Their body resembles adults, but their coloration is a mottled mix of grays, browns, and reds – having distinct patches on their backs. This helps with camouflage but often they are mistaken for pygmy rattlesnakes and are killed.
They are great climbers and are found in our shrubs and trees, as well as on our houses and in our garages. Though sometimes confused with the cottonmouth, this snake is non-venomous and harmless. Harmless in the sense that a bite from will cause no harm – but it will bite. Black racers are notorious for this. If approached, it generally freezes first – to avoid detection. If it believes it has been detected, it will flee at amazing speeds. If it cannot flee, it will turn and bite… repeatedly. Again, the bites are harmless, but could draw blood. Cleaning with soap and water is all you need.
They are opportunistic feeders hunting a variety of prey including small mammals, reptiles, birds, insects, and eggs. They also hunt snakes, including small venomous species. Unlike the larger venomous snakes, black racers stalk their prey – many times with their heads raised similar to cobras. When prey is detected, they spring on them with lighting speed. Despite the scientific name “constrictor”, they do not constrict their prey, rather pin it down and wait for it to suffocate.
They do have their predators, particularly hawks. When approached they will first freeze to avoid detection, they may release a foul-smelling musk as a warning, and sometimes will vibrate their tails. In leaf-litter, this can sound very similar to a rattlesnake – not helping with the juvenile identification confusion. One paper reported finding a dead great horned owl with a black racer in its talons. Apparently, the owl grabbed the snake too far back. It killed the snake but not before the snake was able to strangle the owl.
They are hibernating this time of year but will soon be laying another clutch of eggs and we will once again encounter this most common of snakes.
References
Florida Museum of Natural History. Southern Black Racer (Coluber constrictor priapus). http://www.floridamuseum.ufl.edu/herpetology/fl-snakes/list/coluber-constrictor-priapus/.
Gibbons, W., M/ Dorcas. 2005. Snakes of the Southeast. University of Georgia Press, Athens GA. pp. 253.
Perry, R.W., R.E. Brown, D.C. Rudolph. 2001. Mutual Mortality of a Great Horned Owl and a Southern Black Racer: a Potential Risk for Raptors Preying on Snakes. The Willson Bulletin, 113(3). http://doi.org/10.1676/0043-5643(2001)113[0345:MMOGH0]2.0.CO;2.
Willson, J.D. Species Profile: Black Racer (Coluber constrictor priapus). SREL Herpetology. www.srelherp.uga.edu/snakes/colcon.htm.
by Rick O'Connor | Jan 31, 2019
“The Gulf of Mexico provides food, shelter, protection, security, energy, habitat, recreation, transportation, and navigation – playing an important role in our communities, states, region, and nation. To highlight the value and the vitality of the Gulf of Mexico region, the Gulf of Mexico Alliance conceived an awareness campaign “Embrace the Gulf” for the entire year 2020. The awareness campaign will culminate in a multi-stakeholder, cross-sector celebration of the importance of the Gulf of Mexico throughout the year 2020.” (https://embracethegulf.org/about/)
Join the Gulf of Mexico Alliance as we celebrate the importance of the Gulf of Mexico during the year 2020. The Gulf of Mexico Alliance is a regional partnership that works to “sustain the resources of the Gulf of Mexico. Led by the five Gulf States, the broad partner network includes federal agencies, academic organizations, businesses, and other non-profits in the region. Our goal is to significantly increase regional collaboration to enhance the environmental and economic health of the Gulf of Mexico.” (https://gulfofmexicoalliance.org/about-us/organization/).
The Gulf of Mexico Alliance (GOMA) was established in 2004 by the Governors of the Gulf states, as a response to the President’s Ocean Action Plan. It began as a network of state partnerships that worked together on various strategies related to the GOMA priority issues identified by the Governors of each state. It had strong support from the U.S. Council on Environmental Quality. Today GOMA is led by the EPA and NOAA, with 13 federal agencies support the effort. Learn more.
A great blue heron enjoying the Gulf of Mexico.
Photo: Chris Verlinde
To celebrate the year 2020 and the importance of Gulf of Mexico, the Embrace the Gulf campaign was created by the Education and Engagement Priority team. The GOMA leadership supports the idea and the campaign has gathered support from the other priority areas.
There are many ways for you and or your organization to get involved. You can plan an event to celebrate the Gulf of Mexico. You can utilize GOMA marketing resources to promote the campaign. Click here to learn about the available marketing resources.
The E& E team is collecting 365 facts to promote the Gulf of Mexico. You can support this effort by submitting Gulf of Mexico facts using the online form that is located here. Facts will be used on social media, the GOMA website and more. Please support this effort by submitting today!!
Check out this You Tube video GOMA produced to promote the beauty and importance of the Gulf of Mexico. Join us as we celebrate 2020 to Embrace the Gulf!!
by Rick O'Connor | Jan 18, 2019
Those of us who enjoy wildlife viewing do not see much this time of year. The days are shorter and colder. Most creatures have left or are hiding from the winter air. We grew up learning about hibernation and winter life for animals. But why do they do this? And are all of them doing so?
The spectacular dunes of south Walton County.
It is all about temperature. Our bodies have an internal temperature that must remain within a specific range for us to survive. Some creatures can survive at much higher temperatures than others, such as the desert pupfish. This fish lives in pools out west where water temperatures average 93°F. Others can live in very low temps, such as the Antarctic icefish – who live in water in the 28°F range. But most live with body temperatures in the 85-95°F, and most prefer to keep their body temperatures near the upper limit of their tolerance range.
How do they do this when it is cold outside?
Well, the can absorb heat externally – from the sun, the ground, being in contact with warm solid objects, and even from the air. For some creatures, this is their primary method of absorbing heat. We call them “ectotherms” – or “cold blooded”. These “cold bloods” have low metabolism, so they do not generate enough internal heat to help. Many also have an outer covering (scales) that is not a good insulator, so they cannot hold on to the heat they do produce. Most “cold bloods” are no where to be found this time of year. It is far too cold outside. Their food (the source for internal metabolic heat) is nowhere to be found either. Some of the “cold bloods” will find a burrow, or some location out of the elements and go into torpor (sleep). Torpor will allow them to slow their metabolism, which is going to happen anyway, to where their heart and respiration rates drop dramatically. This reduces the chance of losing more heat during breathing (which happens) and the low metabolism allows them to survive on stored energy until spring.
An alligator at Wakulla Springs taking advantage of the sun to bask and maintain body temperature. Photo credit: Carrie Stevenson
There are different levels of torpor. Some “cold bloods” are in DEEP torpor (true hibernation) and are basically unresponsive to external stimuli. Others are not so “deep” and may move around during winter. Snakes may emerge on warm sunny days in January to bask near the burrow entrance and regain some heat. Other “cold bloods” may just pack up and move – migrate – where it is warmer. This happens more with fish than reptiles and amphibians.
Then there are the endotherms, or “warm bloods”. These animals can maintain a relatively high body temperature this time of year and remain active – even seek out and hunt hibernating creatures. How do they do this?
First, they have a higher metabolism rate than “cold bloods”, and thus generate more internal heat. There is a cost for this though – 80-90% of the food they consume goes to maintaining their body temperature (and I say they… that would be WE…). This means “warm bloods” must eat more often and this can be problematic in winter when your favorite prey is in hibernation or has migrated.
In addition to producing more heat, their body covering (fur or feathers) helps insulate them so they do not lose the heat they have produced. “Fluffing” the fur or feathers helps some as well. There is a biological principal known as Bergmann’s Rule that states, “larger animals can maintain their body temperature better than smaller ones”. This has to do with surface area : volume ratios, and an article for another day, but let’s just say bigger animals can maintain a warmer body and remain more active. That said, smaller mammals (beach mice) may still need to hibernate or enter some form of torpor to survive this time of year.
One mammal that some folks on the beach still encounter this time of year is the coyote. One of the larger mammals in the beach ecosystem, and a top predator, coyotes are still active in winter. Actually, it is breeding time for them. The females usually find a denning spot as it becomes cold and gestation will last about 60 days; so, the pups will be here soon. The average number of pups / female is six; a pretty big family to feed honestly. At that point, in a few weeks, she will be seeking food to produce milk to nourish her pups – who will be sexually mature and ready to reproduce by Thanksgiving.
A coyote moving on Pensacola Beach near dawn.
Photo provided by Shelley Johnson.
Many who have encountered, and I spoke with one beach resident who recently saw one, are still nervous around them and not sure what to do. Despite the group calls (howls) they are famous for, they are not as social as wolves and can be seen alone. They have a natural fear of humans and try to avoid us. They are fantastic consumers of rodents (their favorite prey) and this sometimes brings them close to homes and businesses. They are more crepuscular (dawn and dusk) and nocturnal, so encounters are not common, but they happen. Usually when a coyote spots us, they freeze and then slide off into the night. This is good, and normal. Animals that stand their ground or approach humans can be a problem. They usually only do this when (a) they are sick and not acting normal, or (b) they have been fed by humans. This is not always intentional. Sometimes folks place their cat food outside for their cats and turn in for the night. If the coyotes find this, they will be back. In other cases, it has been intentional, and we strongly recommend you do not do this. In one study they found in Chicago, where coyotes do live but encounters are rare, their stomach content only had about 2% human food. Compare this with coyotes in southern California, where human food content is around 25% and negative human encounters are more common.
There is also concern about coyotes taking small pets. This happens. All predators are seeking prey that is easy to kill – where they can feed and not expend a lot of energy to make the kill. Small pets are easy to kill, larger than rodents, and carry more energy for them. It is recommended that you bring your small pets indoors during the evening.
In Escambia County, the County Extension office provides a monthly program called SCIENCE HOUR each month. Next month (February 7) the topic will be coyotes and pet safety. The presentation will be given by Elizabeth Heikkinen from FWC. We encourage all who have concerns about coyotes to come hear the talk and ask questions. Science Hour is held at the Escambia County Central Office Complex in Pensacola. 3346 West Park Place. We begin at 6:00 PM and it is free.
Though we see less wildlife this time of year, it is great time to walk the beaches. Get out and enjoy.
by Rick O'Connor | Jan 4, 2019
It has been one crazy year in the world of natural resources in the Florida panhandle. I guess the top stories would be the red tide and, of course, Hurricane Michael. Both had an impact environmentally and economically in the area.
Dead fish line the beaches of the Florida Panhandle after a coast wide red tide event in October of 2015.
Photo: Randy Robinson
We did not see the red tide in the panhandle until late summer. The folks in southwest Florida had been dealing with it since late winter. Down there, large fish kills were driving away tourists and halting the charter fishing industry. People began canceling their hotel reservations and moving to the east coast of the state, which eventually had red tide as well. One report showed a 6% decrease in tourism for that region, may have been more. It was certainly devastating and there is now a bill in U.S. congress to fund red tide research and monitoring. They are wanting to be able to predict them better, and possibly reduce their impacts.
Here in the panhandle the economic impact was not as large. One, it came later in the year – beyond our busy season, and two Hurricane Michael occurred, which had a far greater environmental and economic impact. That said, FWC will continue to monitor for red tide and hope it will not be a story this year.
Hurricane Michael was huge as far as environmental and economic impacts for the natural resources in the region. Charter captains either had no boats, no crew, no marina, or no customers – in some cases, all of the above, and business suffered. For some fishing interest, we were past the closed season but for divers, and other fishing interest, the loss was definitely felt.
It was no different for the commercial fishing industry. In addition to boat, crew, and marina issues, oyster cages in the Apalach area were tossed up on beaches or lost all together. Product leaving the area, if you could harvest, was okay – but for those looking for local seafood in the area you had the problem with closed restaurants and seafood markets.
Here is an example of the damage to local marinas and vessels that service our local fisheries. Unseen is the economic damage to fishing crews and supporting shore base businesses such as seafood processors, bait and tackle shops, and tourism related businesses. (Photo by Allen Golden).
Above the coast, there were problems with downed trees – making commuting impossible and, in some cases, costing landowners a lot of money. Pecan orchards were hit hard, as were some of the timber interest. There were reports of livestock loose due to crushed fences from downed trees. Those they could hold on to did not have barns to put them in and feed was in low supply.
Then you had to be concerned about the quality of the water. Excessive rain equals high levels of bacteria, even in private wells there could be contamination. With time all things tend to return. Some local residents may be restoring their natural resources for some time, others may be back in business now. It was a tough hit for the area this year.
Other natural resource notes for 2018 include bear sightings. This continues to be an issue in the panhandle, particularly in Santa Rosa County. There have been manatees visiting the Big Lagoon area of Pensacola Bay during the last two years – something they do not often see. Also, in the Pensacola area has been an increase in calls about venomous snakes. Hard to say if there are more snakes than there once were, or whether they are becoming more visible, but it was a story that we will continue to watch this year.
At the 2018 FWC lionfish summit it was mentioned that lionfish are harder to find in waters shallower than 120’, this is good news. The story is not over yet but seems the harvesting we have been doing has helped. We will be having a regional lionfish workshop February 19 in Ft. Walton Beach for those interested in learning more about this issue. That will be followed the next day with a workshop on local artificial reefs. Registration information will be posted soon.
Harvested lionfish. Photo Credit: Bryan Clark
As we now look at 2019 there will certainly be new natural resource stories. There are a couple of bills recently introduced at the state level dealing with septic tank inspections, lawn fertilizer, maintaining our springs, and sewage spills designed to help improve water quality – we will see what happens with those. There is much discussion on coastal resiliency and how to reduce the impacts of future hurricanes and we will continue to monitor changes in our area such as invasive species and mangrove distribution.
If you have a topic you would like to see an article about, please let us know. We hope you had a great holiday season and we look forward to a good new year.
by Rick O'Connor | Dec 19, 2018
Most everyone knows the importance of submerged seagrass in our coastal estuaries. It has been estimated that 80% of the commercial and recreational important marine species depend on seagrasses for at least part of their life cycle. One acre of submerged seagrass can produce 10 tons of leaves, support 40,000 fish, and 50 million invertebrate species. Not everyone in the panhandle lives on the coast, but many who live inland enjoy fishing there, so the concern for the health of our grassbeds does extend inland.
Shoal grass. One of the common seagrasses in Florida.
Photo: Leroy Creswell
In the Pensacola Bay area, the decline of seagrass was first reported in the 1950s. A 95% decline occurred between 1950 and 1980. The decline in local bay scallop and shrimp over the years has been attributed to the decline of these grassbeds. Aerial surveys have shown steady decreases in acres until 2003. From 2003 until 2010, there was an 8.4% increase in seagrass acreage in the Pensacola Bay System. All bodies of water showed increases except Santa Rosa Sound and Big Lagoon, which had slight losses in seagrass coverage. The most recent reports from an FWC study (2010-2015), suggest the seagrasses in the Big Lagoon and Santa Rosa Sound area have increased 13%.
Despite these recent gains, and anecdotal reports of “healthy seagrass”, many of the historic beds have not recovered. Historically, seagrass restoration efforts have not been very successful. Natural restoration seems to be the best target at the moment. To do this, you will need to reduce the stressors that caused the declines in the first place. Some of the possible stressors include: dredging, trawling, decreased water clarity, prop scarring, dock shading, and armored shorelines – to name a few.
To this end, a citizen science project was developed by a partnership with the University of West Florida and the Florida Sea Grant Extension Programs in Santa Rosa and Escambia counties. Volunteers who live on, or near, these bodies of water were trained to monitor the seagrass beds near their homes. Eleven 1-nautical mile square grids were set up in Big Lagoon and 55 were marked for Santa Rosa Sound. Volunteers selected beaches within one of these grids to survey. In 2018, five of the Big Lagoon and six of the Santa Rosa Sound grids were monitored. Within their grids, volunteers selected four locations to monitor once a month between May and October. Using snorkels, volunteers placed a 0.25m2 PVC square (quadrat) on the bottom over the grass. The percent coverage was estimated and species of grass within identified and recorded. Volunteers recorded whether drift algae was present on the grasses (these could be a problem for them) and a list of any marine animals they may have found. They also collected a water sample to be analyzed for total suspended solids and nutrients by students at the University of West Florida. UWF students also visited sites during the year to collect data on salinity, temperature, dissolved oxygen, nitrites, nitrates, ammonia, total phosphorus, and pH.
The darker areas in the water are seagrasses. Photo: Rick O’Connor
So how did the first year go?
Pretty good!
The average percent coverage of seagrass for all locations was between 60-70%, some locations in Santa Rosa Sound were 100% coverage for their stations. The percent coverage of the epiphytic drift algae was between 2-8%. There was no real difference between Santa Rosa Sound and Big Lagoon in seagrass coverage however there was for the epiphytic drift algae – Big Lagoon had more. The UWF environmental data also found a higher concentration of chlorophyll a in Big Lagoon. This suggest either more runoff into Big Lagoon, or the runoff has more nutrients in it. Overall nutrients were relatively low. There was a decrease in salinity as the rain increased. The more common species of seagrass are not fans of low salinity, but Widgeon grass (Ruppia maritima) is – and we did see increases in this species as we moved into September, again – probably due to lower salinities.
We will continue to monitor these grassbeds for several years and really hope we see signs of natural restoration.
REFERENCES
Caffrey, J. 2018. Unpublished report on seagrass monitoring.
Lewis, M. J.T. Kirschenfeld, T. Goodheart. 2016. Environmental Quality of the Pensacola Bay System: Retrospective Review for Future Resource Management and Rehabilitation. U.S. Environmental Protection Agency, Gulf Breeze FL. EPA/600/R-16/169.
