Purple Gallinule in Loxahatchee, Florida.

Soccer Balls, Bucky Balls, #sciooceans, & Purple Gallinules

Rob Diaz de Villegas WFSU-TV

Dr. Harold Kroto has a soccer ball.  Drs. Randall Hughes and David Kimbro have WFSU-TV (and me).  IGOR associate producer Rebecca Wilkerson produced the video above, the first SciTalk, our new video series on how scientists talk to people who aren’t scientists, about science.  It stars Dr. Kroto, a Nobel Laureate for his co-discovery of buckminsterfullerenes.  And hey, how about that, bucky balls look exactly like soccer balls!  For Kroto’s audiences, this is the gateway to the complex chemistry of carbon composites, made simple and clean.

Simple and clean is not so much our approach to communicating science.  We do ecology, and ecology has a lot of connectedness.  A river carries fresh water and nutrients (our participation in the RiverTrek paddle down the Apalachicola the last couple of years).  If that water doesn’t flow, there can be problems with oysters in the bay (our coverage of David’s research into the failure of Apalachicola Bay reefs).  When the oysters die, the seafood industry crashes (how we incorporated oystermen into our coverage of David’s research).

Old Growth Cypress and Ogeechee Tupelo in Sutton Lake, off of the Apalachicola River on RiverTrek 2013.

How about a kayak adventure as a way to communicate ecology? On this year’s RiverTrek (also this past week), we explored ecosystems other than oysters that are affected by low water flow. This is Sutton lake, which runs off of the Apalachicola River. With last year’s record low flow, we never got to paddle to these old growth cypress and ogeechee tupelo trees further off the river. In our upcoming RiverTrek 2013 videos, we get deeper into this and other ecosystems surrounding the river. Look for a two-part EcoAdventure in November.

We don’t have a soccer ball.  We have a soccer stadium.

Sometimes you can shrink a research topic down into a icon; sometimes you zoom out and look at the world around it.

Our first SciTalk video happened to air the same week as Science Online Oceans, a conference where marine scientists are hard at work trying to get you (the nonscientists reading this) to care about ocean science.  I moderated a discussion on scientist/ filmmaker collaboration (follow the online side of that discussion at #sciofilmmaker), and attended a few very helpful sessions where I gained some knowledge I’d like to use.  Technology offers some tantalizing opportunities, but new gadgets and web tools aren’t an automatic guarantee that people will pay attention to and absorb your message.  As you can tell from the hashtags, for instance, ScioOceans is a Twitter-heavy affair. But who’s seeing our tweets?  And I would love to set up a virtual field trip to an oyster reef for school children using a Google Meetup.  There are so many new tools, and yet, watching the video above, I can’t help but notice how engaged the kids look as they build bucky ball models.  Dr. Kroto is doing a good deal of outreach in person, with a soccer ball.  In the end, the content of the message is still more important than the device that delivers it.

We will continue our SciTalk videos (not the newest technology, but still effective), looking at what scientists, educators, and community organizations are doing to make science interesting.  We’ll also continue exploring our local ecology.  Look for a two part RiverTrek 2013 EcoAdventure.  The water was higher on the Apalachicola this year, and we’re exploring more of the area around it.

Of course, when you’re communicating ecology, flashy animals are always a big help.  So I leave you with this purple gallinule, spotted on our ScioOceans Everglades field trip (#scioglades).

Purple Gallinule in Loxahatchee, Florida.

This material is based upon work supported by the National Science Foundation under Grant Number 1161194.  Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Kayaks parked at Piney Z. Lake in the Lafayette Heritage Trail Park.

Bike and Kayak EcoAdventure on Tallahassee’s Lake Lafayette

Video: Mountain biking, kayaking, and nature watching at the Lafayette Heritage Trail Park in Tallahassee, Florida.

Rob Diaz de Villegas WFSU-TV

Sunrise at Piney Z. LakeAs you can see in the video, a sunrise is always worth getting up for.  All the better if a sunrise that beautiful is a mere fifteen minutes from my house.  Moments before the sun peaked over the tree line to gaze at its reflection in Piney Z. Lake, we heard a ruckus of birds as they flew overhead.  We came to the Lafayette Heritage Trail Park for kayaking, mountain biking, and an airboat ride, but the reason you schedule a shoot at that time is for lighting and wildlife.  Florida Fish and Wildlife biologist Michael Hill told us that they’re getting the park onto the Great Florida Birding and Wildlife Trail.  My favorite critter of the day was the juvenile green heron you see at 0:32, but it was also fun to see anhinga, gators, and the occasional osprey.  The park also has gallinules, wood ducks (you can see a couple of wood duck boxes in the video), and over three hundred wood stork nests (located on Lower Lake Lafayette).

Tussocks on Lower Lake Lafayette

The Lower Lake Lafayette portion of the paddling trail is currently clogged with tussocks. When the water gets low, dead plant material accumulates and traps seeds. The seeds grow in these mats, which become floating islands when the water gets higher. The dead vegetation you see in this photo is a result of herbicides, the first step in clearing the trail.

My wife and I have been hiking the multi-use trails in the park pretty much since it opened a few short years ago.  We usually start in Tom Brown Park, make our way along Upper Lake Lafayette and then to Piney Z. Lake.  If we have the time, we head along the dam separating Piney Z. and Lower Lake Lafayette, and across the train tracks into the J.R. Alford Greenway.  Walking all that way, you get to wondering about the dams separating the lakes and the “fishing fingers” on Piney Z.  Those are remnants of the Piney Z. Plantation, which added the earthen dams and dykes in the 1940′s.  The fingers are an interesting feature, letting you walk towards the center of the lake and offering some nice views of the dykes that the City of Tallahassee turned into small islands when they made the park.  All of that damming has altered the hydrology of what was once a singular Lake Lafayette.  This is why the paddling trail on Lower Laffayette has been closed for the last year, as our recent big bad drought lowered the lake and caused it to become choked with vegetation.  The trail will soon be cleared and will open by Thanksgiving 2013.  Thanks to Michael and his airboat (and to Liz Sparks for setting us up with him), we were able to get a unique look at the lake and its floating islands of vegetation, called tussocks.  The dams prevent the Lake’s normal drought cycles, and so the trails require some extra maintenance.

Ardisia crenata

Ardisia crenata, and invasive plant found in the Lafayette Heritage Trail Park.

On land, the multi-use trails need maintenance as well, and there is one thing that any of us who use the park can help with.  Chuck Goodheart, who manages the trails, is looking for help with invasive plant species, in particular, Ardisia crenata.  This plant threatens to overtake native plants within the park.  The city had spent thousands of dollars to try and eradicate it, only to have it return.  Now they’re turning to people who use the trail.  People have learned to carry bags when they walk their dogs; we can likewise bag and remove the plants and their berries when we see them in the park.  In fact, there are bags for dog waste near the Piney Z. parking area.  If people buy into it, it should be a cost effective approach.

I want to thank Chuck for riding his bike on camera after recently having surgery on his foot.  And I want to thank Georgia Ackerman for once again lending me a kayak.  Todd Engstrom and I both got to try out the kayaks we’re taking on RiverTrek 2013, which is- oh my! – two weeks away.  Todd, Georgia, and Liz are a great group to paddle with.  RiverTrek gets me thinking about the connection between the Apalachicola River and Bay, and the bay’s ever important estuarine ecosystems.  This dynamic is at play on Lower Lake Lafayette, which flows into the St. Marks River, which itself flows into the St. Marks Refuge with its vast marshes.  Upper Lafayette has a sinkhole that drains into the Floridan aquifer, the source of water for most of north Florida and parts of South Georgia.  The aquifer also feeds springs that feed rivers that ultimately feed the Gulf.  Nature has this “six degrees of Kevin Bacon” thing going on, especially when it comes to the way water moves.  That includes rain and everything it carries with it from the roadways and lawns in the developed areas around Lake Lafayette. (Watch as David Kimbro explains the natural- and unnatural- nitrogen cycle, and how oysters can help). In all the years I’ve been coming here, I had no idea about this, or the why the dams were there or what their effect on the lake is.  I’m glad I had this “closer to home” EcoAdventure to get to know a familiar place a little better.

For more information on the Lafayette Heritage Trail Park, visit their web site.
You can watch a video I produced on greenways and trails in Tallahassee by visiting the new and improved Dimensions web site.
Music in the video by pitx and airtone.

Kayaks parked at Piney Z. Lake in the Lafayette Heritage Trail Park.

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Notes From the Field: Panama, Where Oysters Grow on Trees

A couple of months ago, we looked at the increasing number of mangroves surviving north of their range in Gulf coast marshes and wondered how it might change that habitat. On a research trip to Panama, Tanya Rogers got a good look at how mangroves interact with many species found in North Florida. There, oysters grow on trees.

Tanya Rogers FSU Coastal & Marine Lab/ Northeastern University

Installing predator exclusion cages in the rocky intertidal at Punta Culebra, on the Pacific coast of Panama.

Travel 1,100 miles due south of Miami, and before you know it you will collide with the Caribbean coast of Panama. Take a look around these shores and what will you find? Not just coral reefs as you might expect, but also seagrass beds, mangrove forests, and oysters – many of the same species, in fact, that are found in Florida, but arranged a bit differently. What are these oysters, seagrasses, and mangroves up to in the tropical parts of the world?

For a brief stint this summer I worked with Dr. Andrew Altieri at the Smithsonian Tropical Research Institute in Panama, exploring ecological questions similar to those we’ve been investigating in Florida. Dr. Altieri, much like my advisor, Dr. Kimbro, is interested in the ecology of marine communities, particularly the role of foundation species and the effects of environmental stress vs. consumers/predators in determining what grows where. In the mangroves, as well as on the rocky shores of the Panamanian Pacific coast, I helped set up several experiments using the same sort of experimental techniques as we used in Florida (cages, transplantation, etc.) to answer questions about species interactions in tropical environments. I hope I have the opportunity to return to Panama in the future as part of my graduate research.

Setting up a mangrove root transplant experiment in Bocas del Toro, on the Caribbean coast of Panama.

One interesting thing about the oysters in Panama (on the Caribbean side anyway) is that they grow almost exclusively on mangrove prop roots, and instead of one species, you can find up to five oyster species co-occurring. The oysters grow near the water’s surface, and below them the submerged roots can host an astonishing diversity of other marine invertebrates, including sponges, tunicates, anemones, and tube worms. I found it fascinating to swim below the mangroves, the roots like a maze of stalactites bedazzled with life of all colors and textures, fish darting through the labyrinth, the occasional crab deciding to take refuge on your head. Be on the lookout though for stinging box jellies, for they also enjoy these galleries. Just as in Florida, the mangroves and seagrass beds (which often border the mangroves), are important nursery habitats for juvenile fishes, which later venture out to the coral reefs.

A suite of co-occurring foundation species in Bocas del Toro: corals, seagrasses, mangroves, and oysters (growing on the mangrove roots).

This material is based upon work supported by the National Science Foundation under Grant Number 1161194.  Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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RiverTrek 2013 Preview: A Year in the Apalachicola River and Bay

Rob Diaz de Villegas WFSU-TV

RiverTrek paddlers are raising funds for the Apalachicola Riverkeeper, an organization whose mission is to “provide stewardship and advocacy for the protection of the Apalachicola River and Bay, its tributaries and watersheds…” (participating media members do not raise funds).  At the end of the paddle, on October 12, there will be a reception in Battery Park in Apalachicola.  There, people can greet the paddlers and bring non-perishable food items in benefit of Franklin’s Promise.  Franklin’s Promise aids the families affected by the failure of the Apalachicola Bay oyster reefs.

IGOR chip- gastronomy 150“The Good Lord giveth, and Georgia and the Corps taketh away.” Those words were spoken by Jon Steverson, Executive Director of the Northwest Florida Water Management District.  He was testifying before Florida senators Bill Nelson (D) and Marco Rubio (R) during a special field hearing to address the collapse of the Apalachicola Bay oyster fishery.  The high-profile event, held two weeks ago in Apalachicola, marked almost one year into a particularly turbulent era for this region.  Just one year ago, I was preparing to kayak the Apalachicola River for RiverTrek 2012.  The winter bars in the bay were just days away from opening.  When they did, a lot changed, including the nature of the RiverTrek videos we were to make, and the In the Grass, On the Reef project as a whole.

U.S. Senators Bill Nelson (D) and Marco Rubio (R) at the Senate Committee on Commerce, Science, and Transportation field hearing Apalachicola on August 13.

As I prepare to cover RiverTrek 2013 (October 8-12), the answers to the Apalachicola’s water flow problems remain elusive, and frustration remains high.  Much of that frustration is aimed, as one might gather from the first sentence of this piece, at the state of Georgia and the Army Corps of Engineers.  Thirteen days into the job as Mobile District Commander, Colonel Jon Chytka absorbed decades of displeasure at the Corps’ management of the ACF basin.  “I’m going to try to find out why they sent you,” said Senator Nelson, “Why didn’t they send the generals that I’ve been talking to?”  Part of the frustration stems from the rigidity with which the Corps follows the ACF Water Control Manual, and their interpretation of the authority granted them by congress.  The economic impact of fresh water on Florida’s seafood industry is not given as much weight as its economic impact on Georgia agriculture.   The Endangered Species Act of 1973 is the only guarantor that the river flow is not set below 5,000 cubic feet per second (cfs), which is how low it stayed for 10 months starting May 1, 2012.  That qualifies as the lowest river flow in recorded history, and only endangered mussels and gulf sturgeon kept it from being lower.  Senator Rubio asked whether the Apalachicola oyster would qualify for such protection.  Crassostrea virginica, the common oyster, is the main oyster species found on the east coast of this country and in the Gulf of Mexico.  The oysters you see on the fringe of the coast are the same species as the larger ones harvested from the floor of the bay.  Apalachicola oysters are the same species as Chesapeake oysters.  To the letter of the law, and despite massive decline in oyster reefs worldwide, it is not an endangered species.

This oyster was retrieved from Dr. David Kimbro’s oyster experiment in Apalachicola Bay. They found it dead, with its meat having been eaten. Like many of the dead oysters they’ve found, it has oyster drill egg sacs growing on it. Each of the sacs (here growing on the “chin” of the oyster) contains 10-20 drills.  Low freshwater input to the bay increases its salinity, making the bay hospitable to oyster predators such as drills, crown conchs, and stone crabs.

A further source of frustration with the Corps is the speed with which the Manual is being updated.  As Col. Chytka pointed out, the process began in 2008 and was complicated by lawsuits, the amount of input from stakeholders in the affected states (over 3,000 comments), and the “technical complexities” of the system.  He projected that a draft of an Environmental Impact Statement would be ready in the Summer of 2015, after which they’d reopen it to comments and then finalize by 2016.  The oyster industry may not have that kind of time.  “I don’t see any hope for the near future,” said Shannon Hartsfield, President of the Franklin County Seafood Workers Association. “We don’t have a near future.”

The best-case scenario for the bay, as determined by the University of Florida’s Oyster Recovery Team, is full recovery within a couple of years.  That’s dependent on being able to place a significant amount of oyster shell at the bottom of the bay.  So far, Hartsfield estimates that they’ve covered 35-40% of Cat Point, historically one of Apalachicola’s most productive bars.  By the end of the current shelling project, he believes that they’ll have covered 50% of another of the bay’s main bars, East Hole.  So, in addition to fresh water, oysters will still be lacking adequate substrate where spat could settle.  Additional funding will be needed to cover the bars fully.  There is, though, a glimmer of hope.

While frustration has remained high, so too has passion for the ecosystem and compassion for the people affected.  Says Hartsfield, “This is the first time, ever, out of all this disaster that Franklin County has experienced in the commercial (seafood) industry, that we’ve had any recognition.  And we appreciate it greatly.”  That recognition drew dozens to the steps of the Franklin County Courthouse that day to show support.  It has drawn researchers willing to work with oystermen to find solutions.  It has drawn a steady stream of regional and national media.  And it drew the United States Senate to a fishing town on Florida’s Forgotten Coast.  At the very least, lot of people are invested in finding a solution.

RiverTrek paddlers make their way to Sutton Lake, off of the Apalachicola River.  Last year, the water was too low to paddle to where the largest cypress trees in the Apalachicola watershed are found.  With a year of healthy rainfall, this year's paddlers will have better opportunities to explore the creeks and sloughs branching off of the river.

RiverTrek paddlers make their way to Sutton Lake, off of the Apalachicola River. Last year, the water was too low to paddle further into the lake, where the largest cypress trees in the Apalachicola watershed are found. With a year of healthy rainfall, this year’s paddlers will have better opportunities to explore the creeks and sloughs branching off of the river.

I’m one of the media members who have found themselves returning to cover the crisis, and it started with 105 miles of paddling.  Last year at this time, RiverTrek was to be a different perspective on our local ecology than our marsh, oyster reef, and seagrass videos.  A change of pace.  Instead, it kicked off a year of content that connected the river with the coast, and with the people who care for and rely on these resources.  I now find myself getting ready for this year’s journey with a better knowledge and feel for the story, but with much less certainty about the outcome.  RiverTrek will end after five days.  For this other, much larger Apalachicola adventure, we’ll all just have to keep on paddling.

For more information on RiverTrek 2013, visit the Apalachicola Riverkeeper web site.  To watch videos from last year’s Trek, click here.

Music in the video by airtone.  “Salt in the Blood” was written and performed by Brian Bowen.

This material is based upon work supported by the National Science Foundation under Grant Number 1161194.  Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

wrack

Seagrass Wrack in the Salt Marsh – Blessing or Curse?

2-Minute Video: Seagrass wrack kills part of the marsh, but do its benefits outweigh the destruction?

Our videos to date have centered on biodiversity in the marsh and how it can make a marsh stronger against disturbances. As we see in this video, at least one type of disturbance might actually promote genetic and/ or species diversity.
Dr. Randall Hughes FSU Coastal & Marine Lab/ Northeastern University
This snake was found in a seagrass wrack experiment in the Saint Joseph Bay State Buffer Preserve. Blue crabs were often found taking shelter in their experimental plots as well.

This snake was found in a seagrass wrack experiment in the Saint Joseph Bay State Buffer Preserve. Blue crabs were often found taking shelter in their experimental plots as well.

This time of year if you look around salt marshes in our area, you’ll probably see a strip of dead plant material, or “wrack”, resting on top of the salt marsh plants around the high tide line. Look closer, and you’ll see that it’s mostly made up of seagrass leaves that have either been sloughed off naturally (seagrasses produce lots of new leaves in the summer and shed the old ones) or, occasionally, uprooted by boats driving through shallow seagrass beds. Look even closer (say, by picking it up), and you may just find a harmless marsh snake (or worse, a cottonmouth!) – in our experience, they like to hang out in the cool, moist areas under the wrack.

So is this wrack “good” or “bad” for the salt marsh? As with many things in life, the answer depends on your perspective. If you’re a snake or other critter that likes the habitat provided by the wrack, then it’s probably a good thing. On the other hand, if you’re one of my crew who finds that snake, and particularly if you’re Robyn who REALLY doesn’t like snakes, then it’s most definitely a bad thing. Or, if you happen to be the plant that the wrack settles on top of for long periods of time, then it’s a bad thing, because many of those plants die. But, if you’re a seed that is looking for a good spot to germinate in the marsh, then the bare spot created by the wrack is likely a good thing.

Bare spot left in salt marsh left by seagrass wrack.Last fall, David and I teamed up with Dr. Peter Macreadie from the University of Technology Sydney to find out how the bare “halos” created when wrack mats smother the underlying marsh plants influence the marsh sediments. It turns out, these bare areas store less carbon in the sediments than the nearby vegetated areas, which makes them less valuable as “sinks” for carbon dioxide. But as I mentioned earlier, the bare areas can also serve as a good spot for new plant species (or new genotype of a given species) to start growing, potentially increasing the overall diversity of the salt marsh. And as the seagrass wrack decays, it can provide valuable nutrients to the marsh sediments that support future plant growth. So what is the net outcome of all these good and bad effects?

We decided to do an experiment to answer that very question. As Ryan and Meagan will attest (along with almost everyone else in our labs who we enlisted to help us), this was a very labor-intensive experiment. First, we had to figure out how much wrack is typically in a given area of marsh. Then, we had to collect a lot of wrack, weigh it, assemble it into bags that could be “easily” moved to our experiment, and add it to cages that would help hold it in place. We’re talking ~1.5 tons of wrack picked up and moved to various spots!

FSU Coastal and Marine Lab technician Megan Murdock spin dries seagrass wrack for an experiment at the Saint Joseph Bay State Buffer Preserve.To make matters even more interesting, we had to soak the collected wrack in water to make sure it was all the same wetness, and then spin it around in mesh bags (think salad spinner on a very large scale) for a set amount of time to make sure we could get a consistent weight measurement on each bag. Anyone driving past the SJB Buffer Preserve in early September of last year must have wondered what craziness we were up to! And since we were interested in whether the length of time the wrack sits in one place influences its effects, or whether the number of times that wrack sits in a particular area matters, we moved all of this wrack around in our cages every 2 weeks for 3 months to mimic the movement of natural wrack by the tides. And then we measured everything we could think of to measure about the marsh.

We’re still going through all the data to determine the net outcome, but as expected, whether the wrack is a blessing or curse depends on who you are:

  • Juvenile blue crabs seem to like hanging out in the wrack (which is a much nicer surprise to find than a snake, even when they are feisty!)
  • Fiddler crabs also appear to like the wrack, with greater burrow numbers when wrack is present.
  • Contrary to our expectation that wrack would kill cordgrass and allow other plant species to recruit into the marsh, it looked like cordgrass actually did better in the wrack cages!
  • Sea lavender, a marsh plant with very pretty purple flowers, does not do so well when covered with wrack (Learn more about sea lavender and its relationship with mussels).

More to come once all the data are analyzed…

This material is based upon work supported by the National Science Foundation under Grant Number 1161194.  Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Music in the piece by Philippe Mangold.